industry current voltage transducers

Industry Catalogue 

Industry Current & 

Voltage Transducers

LEM Solutions 

LEM solutions for electrical measurements 

This catalogue summarizes the most common LEM product offerings for industrial, railway, high accuracy, and automotive 

measurements. 

LEM is the market leader in providing innovative and high quality solutions for measuring electrical parameters. Its core products 

- current and voltage transducers - are used in a broad range of applications including drives & welding, renewable energies & 

power supplies, traction, high precision, conventional and green vehicle businesses. 

With higher accuracy and speed, the feedback signal from LEM transducers enables smoother control and energy consumption 

reduction of many electrical systems. 

At the heart of … ELEVATORS 

In most lifts installed worldwide, LEM transducers prevent the doors closing on passengers. They keep the cabin stable when 

people enter, and ensure that the lift rides smoothly by adjusting the torque of the motor. 

At the heart of … RENEWABLE ENERGIES 

DRIVES & WELDING MARKET 

RENEWABLE ENERGIES & POWER SUPPLIES MARKETS 

Today, the transducer market has two main technology drivers: first, the desire for a greater degree of comfort and finer 

regulation, and second, the need to save energy. This means that more and more applications that used to be mechanical are 

changing to fully electronic control which provides increased reliability, improved regulation and higher energy efficiency. 

Today, about 15 % of all motors have an inverter control. This inverter can save 50 % of the total energy consumed, which is a 

huge potential for savings. 

The inverter control used in these newer systems requires reliable, accurate current measurement to enable engineers to 

develop a system with isolated current measurement directly on the motor phases. 

Energy savings is the key word today and this includes the exploitation of the wind and the sun as alternate energies. To use 

these renewable sources, in the most profitable way in terms of energy efficiency, the use of power electronics is a must and is 

essential to drive and control energy in industrial applications. Modern systems are becoming more complex and require precise 

coordination between the power semiconductors, the system controller, mechanics, and the feedback sensors. Transducers 

provide the necessary information from the load to fulfill that function. We can compare the use of transducers to adding “eyes” 

to the system. 

They can supply the “brain” of the system, in real time, with information regarding the condition of the controller. 

LEM products are already used among a broad spectrum of power electronics applications such as industrial motor drives, 

UPS, welding, robots, cranes, cable cars, ski lifts, elevators, ventilation, air-conditioning, power supplies for computer servers, 

and telecom. 

This trend towards more involved power electronics happens in a general manner in the industrial world, for example, in lighting, 

domestic appliances, computers and telecom applications. Power electronics increases efficiency by delivering the correct type 

of power at the most efficient voltage, current and frequency. 

LEM Solutions 

TRACTION & TRACKSIDE MARKET 

LEM transducers, specifically designed for renewable power systems, control the flow and waveform of energy sent to the grid 

from photovoltaic and other renewable energy systems. They measure the current to help the windmills and solar installations to 

work at their maximum efficiency. 

At the heart of … TRACTION 

Regardless of whether a train is powered by diesel or electricity, traction is provided by electric motors driven by inverters 

that are relying on LEM transducers to measure, optimize and adjust the power that is sent to the motors, improving both 

performance and reliability. 

At the heart of … HIGH PRECISION APPLICATIONS 

Today, high speed trains, city transit systems (metro, trams, and trolleybuses) and freight trains are the solutions against 

pollution and interstate traffic immobility, and provide a significant energy savings. 

Power electronics is essential to drive and control energy in these transportation systems. 

LEM has been the market leader in traction power electronics applications and development for the last 40 years and leverages 

this vast experience to supply solutions for isolated current and voltage measurements. 

LEM transducers provide control and protection to power converters and inverters that regulate energy to the electric motors 

(for propulsion) and to the auxiliaries (for air conditioning, heating, lighting, electrical doors, ventilation, etc.). This includes the 

incoming monitoring of the voltage network (changing by crossing European borders) to make the power electronics work 

accordingly. 

Although this is true for on-board applications, LEM has also provided the same control and protection signals for wayside 

substations. 

The rail industry is under constant changes and evolution. As a recent example, the privatization of the rail networks raised 

new requirements for which LEM provides: the onboard monitoring of power consumption (EM4T II Energy Meter), solutions to 

trackside applications, rail maintenance and the monitoring of points (switches) machines or signaling conditions with some new 

transducers families. 

LEM is always available to assist in adapting to these evolving technical applications. 

Four decades of railway experience have contributed to establishing LEM as the market leader with worldwide presence to serve 

you and provide the efficient, safe and reliable operation of the railways. 

HIGH PRECISION MARKET 

The quality of the image provided by MRI scanners is linked directly to the accuracy of the current measurement. 

The current transducer used has a direct impact on the image and if the transducer is not precise enough this will lead to a 

blurred and illegible image. LEM current transducers set a standard for accuracy and are the most precise industrial products 

in the market today. The transducers provide levels of stability and precision, at about 1–3 parts per million, which makes them 

references in calibration test benches or in laboratories. 

At the heart of … AUTOMOTIVE 

Certain power-electronics applications require such high performance in accuracy, drift and/or response time that is necessary 

to switch to other technologies to achieve these goals. The validation of customer equipment is made through recognized 

laboratories using high-performance test benches supported by high-technology equipment including extremely accurate 

current transducers. These transducers are still in need today for such traditional applications but are more and more in demand 

in high-performance industrial applications, specifically medical equipment (scanners, MRI, etc.), precision motor controllers, 

and metering or accessories for measuring and test equipment. LEM has been the leader for years in producing transducers 

with high performance and competitive costs for these markets. The 2009 acquisition of the Danish company, Danfysik ACP 

A/S, as being the world’s leader in the development and manufacturing of very-high precision current transducers, reinforced 

this position. 

In electric and hybrid vehicles, LEM transducers monitor energy levels to and from the battery and are critical in the control of 

the electric motors. 

It is our business to support you with both standard and customized products to optimize your application. 

To achieve this challenging target of accuracy and performance, LEM’s current transducers for the high precision market use an 

established and proven technology, the Fluxgate technology deployed in different alternatives. 

Thanks to this technology, we can claim accuracies in the parts per million (PPMs) of the nominal magnitude and is 

representative of the performance achieved. 

The high-accuracy product range covers transducers for nominal current measurements from 12.5 A to 24 kA while providing 

overall accuracies at ambient temperatures (25°C) of only a few PPM. Thermal offset drifts are extremely low, only a few PPM 

per Kelvin (K). 

2 3

LEM Solutions 

LEM has been the market leader in industrial, railway, high accuracy power electronics applications and development for the last 

40 years and leverages this vast experience to supply solutions for isolated current and voltage measurements. 

With more than 2 500 current and voltage transducers in its portfolio, LEM offers a complete range of accurate, reliable, and 

Galvanically isolated devices for the measurement of currents from 0.25 A to 24 000 A and voltages from 10 V to 4 200 V in 

various technologies: open loop, closed loop, fluxgate, insulating digital technology, Rogowski, current transformer etc. 

LEM transducers are designed according to the most demanding international standards (EN50178, EN 50155, EN50124-1, NFF 

16101, 16102, etc.) and carry CE marking. UL Recognition (UR) is also available on most models. 

We have worldwide ISO 9001, ISO TS 16949 and IRIS (Geneva and Beijing LEM production and design centers) qualification and 

offer a 5-year warranty on all of our products. 

At LEM, we find that our customers not only require an optimal solution to accurately measure the current in their applications, 

but that they are also looking for a current measurement solution which brings added value to the final application and gives an 

edge to their competitive environment. 

Performance improvement: Customers demand the best solution for all the many applications in the industry worldwide and the 

transducer business needs to keep up or even anticipate this. LEM remains in close collaboration with its customers and their 

applications to be able to react quickly to the market requirements and to maintain market leadership position in the transducer 

industry. 

LEM constantly strives to innovate and improve the performance, cost and size of its products. 

LEM is a world-wide company with regional sales offices across the globe close to its clients’ locations and production facilities 

in Switzerland, Europe (including Russia and Bulgaria) and Asia (China and Japan) for seamless service everywhere. 

We hope you will find this catalogue a useful guide for the selection of our products. 

Visit our website at www.lem.com and contact our sales network in your region for further assistance. 

Detailed data sheets and application notes are available upon request. 

Sincerely, 

Hans-Dieter Huber 

Vice President Industry 

François Gabella 

CEO LEM 

LEM - At the heart of power electronics. 

Contents 

Page 

Typical Applications in Power Electronics 6 - 7 

Transducer Technologies 8 - 11 

DRS/REU: DRIVES & WELDING, RENEWABLE 

ENERGIES & POWER SUPPLIES MARKETS 

Current transducers, 0.25 ... 5 A 12 - 13 

Current transducers, 5 ... 8.34 A 14 - 15 

Current transducers, 10 ... 20 A 16 - 17 

Programmable HO Series 

Current transducers, 2.67 ... 25 A 18 - 21 






Current transducers AC, 500 ... 2000 A AC 

32 


Current transducers, 

Minisens-FHS model, 2 ... 100 A 34 - 37 

Contents 

Page 

Current transducers, Specific applications 

Interference Frequencies Detection 

0.1 ... 20 A AC 

51 

Current transducers, Trackside/Substations, 

10 ... 20000 A 52 - 53 

Voltage transducers, Traction On-Board 

(without resistor R1), 10 ... 1500 V 54 

Voltage transducers, Traction On-Board 

(without built in resistor R1), 

50 ... 4200 V 54 - 55 

Energy Measurement, Traction On-Board 

EM4T II 56 - 59 

Selection Guide - Traction 60 - 61 

HIP: HIGH PRECISION MARKET 

Stand-alone Current transducers 

12.5 ... 4000 A 62 -63 

Rack System Current transducers 

40 ... 24000 A 64 -65 

AUT: AUTOMOTIVE MARKET 

Applications Overview 66 - 67 

Contents 

Current transducers with conditioned 

output, 2 ... 20000 A 38 - 39 

Voltage transducers, 10 ... 2500 V 

(without resistor R1) 40 

Selection Guide - Automotive 68 - 69 

LEM’S QUALITY AND STANDARDS 70 - 73 

Secondary Connections Options 74 

Voltage transducers, 50 ... 4200 V 

Design Specification Form 75 

(with built in resistor R1) 40 - 41 

Selection Parameters 76 - 77 

Wi-LEM 

Wireless Local Energy Meter 42 - 43 

TTR: TRACTION & TRACKSIDE MARKET 

Current transducers, Traction On-Board, 

0.4 ... 500 A 44 - 45 

DIMENSION DRAWINGS 78 - 96 

Product Coding 97 

Symbols and Terms 98 

LEM’s Warranty 99 

Current transducers, Traction On-Board, 

1000 ... 4000 A 46 - 47 

LEM International Sales Representatives 100 

LTC Series - Modular Current transducers 

Mechanical adaptation accessories 48 - 49 

Current transducers,Specific applications, 

2 ... 10 A - Fault detection 50 

Shunt Isolator, Specific applications, 0.03 V 50 

DRS/REU: DRIVES & WELDING, RENEWABLE 

ENERGIES & POWER SUPPLIES MARKETS 

TTR: TRACTION & TRACKSIDE MARKET 

HIP: HIGH PRECISION MARKET 

AUT: AUTOMOTIVE MARKET 

4 

5

Applications 

Typical Applications in Power Electronics 

AC Variable Speed Drives and Servo Motor Drives 

Typical Applications in Power Electronics 

Uninterruptible Power Supplies (UPS) 

Applications 

Typical Applications 

• Machine tools, printing, 

paper, textile, plastic 

• Steel mills 

• Lifts 

• Cranes 

• Robotics 

• Pumps 

• Washing machines 

• On board Main Inverter 

• On board Auxiliary Inverter 

• EDP systems 

• Telecom 

• Security systems 


Switched Mode Power Supplies (SMPS) 


• Windmills 

Static Converters for DC Motor Drives 


• Power supply for 

electronic equipment 

and control systems 

• Battery chargers 

• Telecom 

• Voltage and current 

stabilizer for industry 

and lab applications 

• Electronic ballast 


Power Supplies for Welding Applications 

• Machine tools, paper, 

printing, plastic 

• Cranes 

• Escalators 

• Electrical door 

opening systems 

Battery Supplied Applications 

Other Applications 


• Electric vehicles 

(Zero Emission 

Vehicles, ZEV) 

• Fork lift trucks 

• Wheel chairs 

• Solar power supplies 

• Test and measurement 

in laboratories and 

universities 

• Medical X-ray and 

imaging equipment 

• Electrolysis, currents 

monitoring 

• Inductive heating 

• Energy management 

systems. Monitoring 

of load currents 

• Over-current protection 

• Control and safety systems 

• Electrical traction 

• Mining trucks; Wheel 

drive systems 

• Substations: Power 

transformers; AC/DC 

Switchgear; Rectifiers 

• Trackside applications 

(points machines, signaling...) 

6 7

Technologies 

Transducer Technologies 

Open Loop Current Transducers (O/L) 

Features 

Closed Loop Voltage Transducers (C/L) 

Features 

Closed Loop Fluxgate CAS-CASR-CKSR type 

Features 

Features 


Closed loop Fluxgate ITC type 

Technologies 

• Small package size 

• Extended measuring range 

• Reduced weight 

Operation principle O/L 

• Low power consumption 

• No insertion losses 

• Measurement of 

high voltages 

• Safety isolation 

Operation principle C/L 

• Good overall accuracy 

• Low temperature drift 

• Excellent linearity 

• Any kind of AC, DC, pulsed 

and complex signal 

• High accuracy 

• High accuracy in 

temperature 

Operation principle 

• Very low drift in temperature 

(gain and offset) 

• Galvanic isolation 

• Fast response time 


• Better than Class 0.5R 

according to EN 50463 

• Outstanding longterm 

stability 


• Low residual noise 

• Very low sensitivity to high 

external DC and AC fields 

• High temperature stability 

R1 

I Compensation 

Isolated Output Voltage V out 

+ U C 

+U C 

Isolated Output Current I S 

R 

kR 

Test winding 

I P 

VHV 

V 

P 

V H 

R SHUNT 

_ 

Diff Amp 

+ 

V OUT 

Compensation 

winding 

Fluxgate D 

Supplies 

Isolated Output 

Current I S 

V OUT 

- U C 

0V 

Isolated Output Voltage V OUT 

R1 

I P 

-U C 

I S 

R M 

0V 

Compensation 

Windingng 

Primary Conductor 

I P 

Fluxgate 

Interface 

Filter 

Fluxgate 

Magnetic Core 

H-Bridge 

Driver 

R 

kR kR SHUNT V ref IN 

Internal 

V 

Ref 

ref out 

I P 

Supplies Monitoring 

Over Voltage 

Protection 

OV Protection 

Micro-Controller 

Offset Correction 

Bridge 

_ 

Resistor 

+ 

Fluxgate D’ 

Fluxgate 

Oscillator 

Synchronous 

Rectifier 

LP Filter 

Fault_PS 

Fluxgate 

Current 

PI Regulator 

DAC 0 

Power Stage 

Primary Current I P 

V H 

R M 

Primary Voltage V P 


The magnetic flux created by the primary current I P 

is concentrated in 

a magnetic circuit and measured in the air gap using a Hall device. The 

output from the Hall device is then signal conditioned to provide an exact 

representation of the primary current at the output. 

A very small current limited by a series resistor is taken from the voltage 

to be measured and is driven through the primary coil. The magnetic 

flux created by the primary current I P 

is balanced by a complementary 

flux produced by driving a current through the secondary windings. A 

hall device and associated electronic circuit are used to generate the 

secondary (compensating) current that is an exact representation of the 

primary voltage. The primary resistor (R1) can be incorporated or not in the 

transducer. 

The operating principle is that of a current transformer, equipped with a 

magnetic sensing element, which senses the flux density in the core. The 

output of the field sensing element is used as the error signal in a control 

loop driving a compensating current through the secondary winding of the 

transformer. At low frequencies, the control loop maintains the flux through 

the core near zero. As the frequency rises, an increasingly large fraction of 

the compensating current is due to the operation in transformer mode. The 

secondary current is therefore the image of the primary current. In a voltage 

output transducer, the compensating current is converted to a voltage 

through a precision resistor, and made available at the output of a buffer 

amplifier. 

I COMPENSATION 


ITC current transducers are high accuracy transducers using fluxgate 

technology. This high sensitivity zero-flux detector uses a second wound 

core (D’) for noise reduction. A difference between primary and secondary 

ampere turns creates an asymmetry in the fluxgate current. 

This difference is detected by a microcontroller that controls the secondary 

current that compensates the primary ampere turns (I P 

x N P 

). 

This results in a very good accuracy and a very low temperature drift. 

The secondary compensating current is an exact representation of the 

primary current. 

I S 

R M 

Closed Loop Current Transducers (C/L) 

Closed Loop Fluxgate C Type 

Closed Loop Fluxgate CTSR type 

Closed Loop Fluxgate IT type 

Features 

• Wide frequency range 


• Fast response time 



• No insertion losses 

Features 

• High accuracy 

• Very wide frequency range 

• Reduced temperature drift 


• Measurement of 

differential currents (CD) 

• Safety isolation (CV) 

• Reduced loading on 

the primary (CV) 

Features 

• Any kind of AC, DC, pulsed 

and complex signal 

• Non-contact measurement 

of differential currents 

• High accuracy for small 

residual currents 

• Very low drift in temperature 

(gain and offset) 

• Protection against 

parasitic magnetic field 


Features 

• Very high global accuracy 

• Low residual noise 

• Excellent linearity < 1 ppm 

• Low cross-over distortion 

• High temperature stability 


Operation principle C/L 




I P 

V H 


+U C 

-U C 

I S 

0V 


Magnetic Shells 

I S +U C 

Diff Amp 

-U C +U C 

V out 

I mag 

-U C 

V OUT 

0V 

Fluxgate 

Filter Driver 

Interface 

V ref IN 

I P +U I 

C 

COMP2 

I S 

+ I mag -U C 


L 

R S 

I COMP1 

I L IN 

N 

Primary conductors 

Primary Residual Current I PR (I L +I N ) 

Int. ref 

V ref out 

Compensation 

Winding 

S 

I P 

D 

D’ 

W 

AC Pickup 

Winding 

Fluxgate Saturation 

Detection 

oscillator 

Sweep 

amplifier 

2nd Harmonic 

Detector 

+ 

Integrator 

Power 

+ 

+ corrector 

Amplifier 

I S 


Compensation 

Current 

R M 



No use of Hall generators. The magnetic flux created by the primary residual IT current transducers are high accuracy, large bandwidth transducers 

current I PR 

(sum between I L 

and I N 

) is compensated by a secondary 

using fluxgate technology with no Hall generators. The magnetic flux 

The magnetic flux created by the primary current I P 

is balanced by This technology uses two toroidal cores and two secondary windings 

current. The zero-flux detector is a symmetry detector using a wound 

core connected to a square-wave generator. The secondary compensating 

created by the primary current I P 

is compensated by a secondary current. 

a complementary flux produced by driving a current through the and operates on a fluxgate principle of Ampere-turns compensation. 

current is an exact representation of the primary current. 

The zero-flux detector is a symmetry detector using two wound cores 

secondary windings. A hall device and associated electronic circuit are For the voltage type a small (few mA) current is taken from the voltage 

In a voltage output transducer, the compensating current is converted to a connected to a square-wave generator. The secondary compensating 

used to generate the secondary (compensating) current that is an exact line to be measured and is driven through the primary coil and the 

voltage through a precision resistor, and made available at the output of a current is an exact representation of the primary current. 

representation of the primary current. 

primary resistor. 

buffer amplifier. 

The magnetic core is actually made up of a pair of 2 magnetic shells inside 

which the detector is located. 

8 * For further information, refer to the brochure “Characteristics- Applications -Calculations” or www.lem.com 

9 

Primary Current I P

Technologies 


DV & DVL Type Voltage transducers 

Features 

• Insulating digital technology 

• Measurement of all 

types of signals: DC, AC, 

pulsed and complex 

• Compact size, 

reduced volume 


• High galvanic isolation 

• Low consumption and losses 

• Very high accuracy, Class 

0.5R according to EN 

50463 (DV Models) 


Rogowski Current transducers RT type 

Features 

• Non-contact measurement 

of AC & pulsed signal 

• Thin, lightweight & flexible 

measuring head 

• Easy to use: Can be opened 


• Sensitivity to external field 

disturbances minimized 




Split Core Current transformers AT & TT type 

Features 

• Non-contact measurement • Easy to use: Can be opened 

• AC & pulsed signal 


• No power supply 



Technologies 

+HT 

Primary 

Voltage 

VP -HT 

-Up 

Rectifier Filter 

+Up -Up 0V +5V 

Modulator 

Supply 

Bitstream 

• Insulating digital technology 

• Measurement of all 

types of signals: DC, AC, 

pulsed and complex 

• Compact size, 

reduced volume 

Primary 

Current 

Shunt 

Rectifier 

Filter 

Power Supply 

Digital 

Filter 

I P 

+Up -Up 0V +5V 

+In 

Bitstream 

Digital 

Modulator 

Filter 

-In 

-Up 

Supply 

Micro controller 

D/A Converter 

U / I 

Generator 

+V C 

-V C 

Output 

The measuring voltage, V P 

, is applied directly to the transducer primary 

connections through a resistor network allowing the signal conditioning 

circuitry to feed a Sigma-Delta modulator that allows to transmit data via 

one single isolated channel. 

The signal is then transmitted to the secondary over an insulating 

transformer ensuring the insulation between the high voltage side (primary) 

and the low voltage side (secondary). 

The signal is reshaped on the secondary side, then decoded and filtered 

through a digital filter to feed a micro-controller using a Digital/Analog (D/A) 

converter and a voltage to current generator. 

The recovered output signal is completely insulated against the primary and 

is an exact representation of the primary voltage. 

DI Type Current transducers (Shunt isolator) 

Features 


• High galvanic isolation 

• Low consumption and losses 

• Very high accuracy, Class 

1R according to EN 50463 


Power 

Supply 

Micro controller 

D/A Converter 

U / I 

Generator 

+V C 

-V C 

Output 

R M 

I P 

V ind 

I S 

C 

S 

W P 

N S 

N P =1 

R M 


AC 



AC 

V out Isolated Output Voltage V out 

A transformer is a static electrical device transferring energy by inductive 

Rogowski technology is an Air-core technology (without magnetic circuit). 

coupling between the windings making part of it. It is made with a primary 

A pick-up coil is magnetically coupled with the flux created by the current to 

coil (W P 

) with N P 

turns and a secondary coil (W S 

) with N S 

turns, wound 

be measured I P 

. A voltage V OUT 

is induced on the pick-up coil proportional 

around the same magnetic core (C). 

to the derivative of flux and thus proportional to the derivative of the current 

A varying current I P 

in the primary winding (assimilated here to the primary 

to be measured I P 

. Because the derivative of DC is zero this technology is 

conductor crossing the aperture: N P 

= 1) creates a varying magnetic flux 

only useful for the measurement of AC or pulsed currents. 

in the transformer’s core crossing the secondary winding. This varying 

The waveform of the measured current requires the integration of the 

magnetic flux induces a varying electromotive force or voltage V ind 

in the 

induced voltage V OUT 

. Therefore, the current transducer may includes an 

secondary winding. Connecting a load to the secondary winding causes a 

integration function in the processing electronics (option). 

current I S 

to flow. This compensating secondary current I S 

is substantially 

proportional to the primary current I P 

to be measured so that N P 

.I P 

= N S 

.I S 

PRiME Current Transducers 

Features 

DC currents are not measured and not suitable because they 

represent a risk of magnetic saturation. The relationship here above 

• AC measurement with • Accuracy independent 

is respected only within the bandwidth of the current transformer. 

wide dynamic range 

of the position of the 

Warning!: Never let the output unloaded because there is a risk of safety 

cable in the aperture 

for users. 

• No magnetic saturation 

and of external fields 

• High overload capacity 

• Light weight and 

• Good linearity 

small package 

• Low thermal losses 


V out 

Integrator 

0V 


DI current transducers (Shunt isolator) must be used combined with an 

external Shunt. 

DI current transducers are working as DV voltage transducers except that 

the input resistor network used inside the DV is replaced by an external 

Shunt providing then the voltage input to feed the Sigma-Delta modulator 

that allows to transmit data via one single isolated channel. 

PRiME operates on the basic Rogowski principle. Instead of a traditional 

wound coil, the measuring head is made of a number of sensor printed 

circuit boards (PCBs, each made of two separate air cored coils) mounted 

on a base-PCB. Each sensor PCB is connected in series to form two 

concentric loops. The induced voltage at their outputs is then integrated in 

order to obtain both amplitude and phase information for the current being 

measured. 

* For further information, refer to the brochure “Characteristics - Applications -Calculations” or www.lem.com 

10 11

DRS / REU 

I PN = 0.25 A ... 2 A DRS / REU I PN = 2 A ... 5 A DRS / REU 

Fluxgate 

I PN 

Closed-loop 

Fluxgate 

Open-loop 

Closed-loop 

Connection 

Connection 

I PN 

I P 

U C 

V out 

BW 

T A 

I P 

U C 

V out 

BW 

T A 

HO 8-NSM/ 

2 ± 6.4 C/L + 5/0 2.5V or V ref 

± 0.625V DC-200 (-1dB) 0.7 -40...+85 10 LTSR 6-NP 5) 4 ± 10 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

SP33-1000 5) 

I out 

Primary Secondary 

I out 


A A 

V 

kHz 

Type 

A A 

V 

kHz 

Type 

@ I PN 

% °C 

@ I PN 

% °C 

0.25 ± 0.36 C/L ± 15 25 mA DC-150 (-1dB) 0.5 -10...+70 1 LA 25-NP/SP14 

2 ± 6.67 

Fluxgate 

DC-300 

+ 5/0 2.5 V±0.625 V 

CAS 

(+/-3dB) 

0.8 -40...+85 11 CAS 6-NP 

0.3 ± 0.5 

Fluxgate 

Fluxgate 

DC-300 

+ 5/0 2.5V or V 

CTSR 

ref 

±1.2V DC-3.5 (-1dB) 1 -40...+105 2 CTSR 0.3-P 5) 

2 ± 6.67 

+ 5/0 2.5V or V 

CAS 

ref 

±0.625V 

(+/-3dB) 

0.8 -40...+85 12 CASR 6-NP 5) 

0.3 ± 0.85 

Fluxgate 

CTSR 

+ 5/0 2.5V or V ref 

±0.7428V DC-9.5 (-1dB) 0.7 -40...+105 3 CTSR 0.3-P/SP1 5) 

2.5 ± 3.6 C/L ± 15 25 mA DC-150 (-1dB) 0.5 0...+70 1 LA 25-NP/SP7 

0.3 ± 0.5 

Fluxgate 

CTSR 

+ 5/0 2.5V or V ref 

±1.2V DC-3.5 (-1dB) 1 -40...+105 4 CTSR 0.3-P/SP10 5) TW 

2.67 ± 6.67 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 13 HO 8-NP-0000 5) 

0.3 ± 0.85 

Fluxgate 

CTSR 

+ 5/0 2.5V or V ref 

±0.7428V DC-9.5 (-1dB) 0.7 -40...+105 5 CTSR 0.3-P/SP11 5) TW 

2.67 ± 6.67 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 HO 8-NSM-0000 5) 

0.3 ± 0.5 

Fluxgate 

HO 8-NP/ 

+ 5/0 2.5V or V 

CTSR 

ref 

±1.2V DC-3.5 (-1dB) 1 -40...+105 6 CTSR 0.3-TP/SP4 5) 

2.67 ± 6.67 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 13 

SP33-1000 5) 

0.3 ± 0.5 

Fluxgate 

HO 8-NSM/ 

+ 5/0 2.5V or V 

CTSR 

ref 

±1.2V DC-3.5 (-1dB) 1 -40...+105 7 CTSR 0.3-TP/SP14 5) TW 

2.67 ± 6.67 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

SP33-1000 5) 

0.5 ± 0.72 C/L ± 15 25 mA DC-150 (-1dB) 0.5 -40...+70 1 LA 25-NP/SP13 

3 ± 9 O/L 

± 

12…15 

4 V DC-50 (-3dB) 1) 2.4 -25...+85 15 HXN 03-P 

0.6 ± 0.85 

Fluxgate 

2 x 2 x 

DC-50 

+ 5/0 2.5V or V 

CTSR 

ref 

±1.4856V DC-9.5 (-1dB) 0.7 -40...+105 2 CTSR 0.6-P 5) 

O/L ± 15 2 x 4 V 

3 ± 9 

(+/-3dB) 1) 3.75 -40...+85 16 HXD 03-P DM 

0.6 ± 0.85 

Fluxgate 

CTSR 

+ 5/0 2.5V or V ref 

±1.4856V DC-9.5 (-1dB) 0.7 -40...+105 4 CTSR 0.6-P/SP10 5) TW 

3 ± 9.6 C/L + 5/0 2.5 V±0.625 V DC-200 (-1dB) 0.7 -40...+85 9 LTS 6-NP 

0.6 ± 0.85 

Fluxgate 

CTSR 

+ 5/0 2.5V or V ref 

±1.4856V DC-9.5 (-1dB) 0.7 -40...+105 6 CTSR 0.6-TP/SP2 5) 

3 ± 9.6 C/L + 5/0 2.5V or V ref 

±0.625V DC-200 (-1dB) 0.7 -40...+85 10 LTSR 6-NP 5) 

0.6 ± 0.85 

Fluxgate 

Fluxgate 

DC-300 

+ 5/0 2.5V or V 

CTSR 

ref 

±1.4856V DC-9.5 (-1dB) 0.7 -40...+105 7 CTSR 0.6-TP/SP12 5) TW 

3 ± 10 

+ 5/0 2.5 V±0.625 V 

CAS 

(+/-3dB) 

0.8 -40...+85 11 CAS 6-NP 

1 ± 1.5 C/L ± 15 25 mA DC-150 (-1dB) 0.5 0...+70 1 LA 25-NP/SP11 

3 ± 10 

Fluxgate 

DC-300 

+ 5/0 2.5V or V 

CAS 

ref 

±0.625V 

(+/-3dB) 

0.8 -40...+85 12 CASR 6-NP 5) 

1 ± 1.7 

Fluxgate 

Fluxgate 

DC-300 

+ 5/0 2.5V or V 

CTSR 

ref 

±1.2V DC-9.5 (-1dB) 1 -40...+105 2 CTSR 1-P 5) 

3 ± 10 

+ 5/0 2.5V or V 

CAS 

ref 

±0.625V 

(+/-3dB) 

0.8 -40...+105 8 CKSR 6-NP 5) 

1.5 ± 2.2 C/L ± 15 24 mA DC-150 (-1dB) 0.5 0...+70 1 LA 25-NP/SP9 

3.75 

± Fluxgate 

DC-300 

+ 5/0 2.5V or V 

12.75 CAS 

ref 

±0.625V 

(+/-3dB) 

0.8 -40...+105 8 CKSR 15-NP 5) 

1.5 ± 5 

Fluxgate 

DC-300 

+ 5/0 2.5V or V 

CAS 

ref 

±0.625V 

(+/-3dB) 

0.8 -40...+105 8 CKSR 6-NP 5) 

4 ± 10 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 13 HO 8-NP-0000 5) 

2 ± 3 C/L ± 15 24 mA DC-150 (-1dB) 0.5 0...+70 1 LA 25-NP/SP8 

4 ± 10 O/L + 5/0 2.5V or V ref 


2 ± 6.4 C/L + 5/0 2.5 V ± 0.625 V DC-200 (-1dB) 0.7 -40...+85 9 LTS 6-NP 

4 ± 10 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 13 

HO 8-NP/ 

SP33-1000 5) 

Technology 

X @ I PN 

T A 

= 25°C 

PCB 

Aperture, 

busbar, other 

PCB 

Other 

UR or UL 

Packaging No 

Features 

Technology 

X @ I PN 

T A 

= 25°C 

PCB 

Aperture, 

busbar, 

other 

PCB 

Other 

UR or UL 

Packaging No 

Features 

DRS / REU 

5 ± 7 C/L ± 15 25 mA DC-150 (-1dB) 0.5 -40...+85 17 LA 25-NP 

2 

3 4 5 6 7 

8 11 12 

14 13 

15 

16 

1 

17 

9 

10 

Notes: 

1) Small signal bandwidth to avoid excessive core heating at high frequency 

5) Ref IN 

& Ref out 

modes 

12 

TW = Test Winding 

DM = Dual Measurement 

Dedicated data sheets are the only recognized reference documents for the given performances and data - Data sheets: www.lem.com 

13

I PN = 5 A ... 7.5 A 

I PN 

I P 

A A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

DRS / REU I PN = 7.5 A ... 8.34 A DRS / REU 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

Open-loop Closed-loop Fluxgate 

Open-loop 

Closed-loop 

Fluxgate 

PCB 

Connection 

Primary 

Aperture, 

busbar, other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Connection 

Primary 

Aperture, 

busbar, other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

DRS / REU 

5 ± 12.5 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 13 HO 15-NP-0000 5) 

5 ± 12.5 O/L + 5/0 2.5V or V ref 


5 ± 12.5 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 13 

5 ± 12.5 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

HO 15-NP/ 

SP33-1000 5) 

HO 15-NSM/ 

SP33-1000 5) 

7.5 ± 24 C/L + 5/0 2.5 V±0.625 V DC-200 (-1dB) 0.7 -40...+85 9 LTS 15-NP 

7.5 ± 24 C/L + 5/0 2.5V or V ref 

±0.625V DC-200 (-1dB) 0.7 -40...+85 10 LTSR 15-NP 5) 

7.5 ± 25.5 

7.5 ± 25.5 

Fluxgate 

CAS 

Fluxgate 

CAS 

+ 5/0 2.5 V±0.625 V DC-300 (+/-3dB) 0.8 -40...+85 11 CAS 15-NP 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+85 12 CASR 15-NP 5) 

DRS / REU 

5 ± 15 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.4 -25...+85 15 HXN 05-P 

7.5 ± 25.5 

Fluxgate 

CAS 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+105 8 CKSR 15-NP 5) 

2 x 5 

2 x ± 

15 

O/L ± 15 2 x 4 V DC-50 (+/-3dB) 1) 3.75 -40...+85 16 HXD 05-P DM 

8 ± 12 C/L ± 15 24 mA DC-150 (-1dB) 0.5 -40...+85 17 LA 25-NP 

5 ± 16 C/L + 5/0 2.5 V±0.625 V DC-200 (-1dB) 0.7 -40...+85 9 LTS 15-NP 

5 ± 16 C/L + 5/0 2.5V or V ref 

±0.625V DC-200 (-1dB) 0.7 -40...+85 10 LTSR 15-NP 5) 

8 ± 16 C/L ± 15 32 mA DC-150 (-1dB) 0.5 -25...+70 17 LA 35-NP 

8 ± 18 C/L ± 12…15 24 mA DC-200 (-1dB) 0.4 -25...+85 18 LAH 25-NP 

5 ± 17 

Fluxgate 

CAS 

+ 5/0 2.5 V±0.625 V DC-300 (+/-3dB) 0.8 -40...+85 11 CAS 15-NP 

8 ± 20 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 13 HO 8-NP-0000 5) 

5 ± 17 

Fluxgate 

CAS 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+85 12 CASR 15-NP 5) 

8 ± 20 O/L + 5/0 2.5V or V ref 


6 ± 9 C/L ± 15 24 mA DC-150 (-1dB) 0.5 -40...+85 17 LA 25-NP 

8 ± 20 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 13 HO 8-NP/SP33-1000 5) 

6 ± 19.2 C/L + 5/0 2.5 V±0.625 V DC-200 (-1dB) 0.7 -40...+85 9 LTS 6-NP 

8 ± 20 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

HO 8-NSM/ 

SP33-1000 5) 

6 ± 19.2 C/L + 5/0 2.5V or V ref 

±0.625V DC-200 (-1dB) 0.7 -40...+85 10 LTSR 6-NP 5) 

8.33 ± 16.66 C/L + 5/0 12.5 mA DC-300 (-1dB) 0.7 -40...+85 19 LTSP 25-NP 

6 ± 20 

Fluxgate 

CAS 

+ 5/0 2.5 V±0.625 V DC-300 (+/-3dB) 0.8 -40...+85 11 CAS 6-NP 

8.33 ± 20.83 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 13 HO 25-NP-0000 5) 

6 ± 20 

Fluxgate 

CAS 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+85 12 CASR 6-NP 5) 

8.33 ± 20.83 O/L + 5/0 2.5V or V ref 


6 ± 20 

Fluxgate 

CAS 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+105 8 CKSR 6-NP 5) 

8.33 ± 20.83 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 13 

HO 25-NP/ 

SP33-1000 5) 

6.25 

± 

21.25 

Fluxgate 

CAS 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+105 8 CKSR 25-NP 5) 

8.33 ± 20.83 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

HO 25-NSM/ 

SP33-1000 5) 

7 ± 14 C/L ± 15 35 mA DC-150 (-1dB) 0.5 -25...+70 17 LA 35-NP 

8.34 ± 26.67 C/L + 5/0 2.5 V±0.625 V DC-200 (-1dB) 0.7 -40...+85 9 LTS 25-NP 

7.5 

± 

18.75 

O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 13 HO 15-NP-0000 5) 

8.34 ± 26.67 C/L + 5/0 2.5V or V ref 

±0.625V DC-200 (-1dB) 0.7 -40...+85 10 LTSR 25-NP 5) 

7.5 

7.5 

± 

18.75 

± 

18.75 

O/L + 5/0 2.5V or V ref 


O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 13 

HO 15-NP/ 

SP33-1000 5) 

8.34 ± 28.34 

8.34 ± 28.34 

Fluxgate 

CAS 

Fluxgate 

CAS 

+ 5/0 2.5 V±0.625 V DC-300 (+/-3dB) 0.8 -40...+85 11 CAS 25-NP 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+85 12 CASR 25-NP 5) 

7.5 

± 

18.75 

O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

HO 15-NSM/ 

SP33-1000 5) 

17 

9 

10 19 15 

18 

8 11 12 

14 13 

16 

Notes: 


5) Ref IN 

& Ref out 

modes 


14 Dedicated data sheets are the only recognized reference documents for the given performances and data - Data sheets: www.lem.com 

15

DRS / REU 

I PN = 10 A ... 12.5 A 

I P 

Technology 

DRS / REU I PN = 15 A ... 20 A DRS / REU 

X @ I PN 

T A 

= 25°C 

T A 


Open-loop 

Closed-loop 

Fluxgate 

Connection 

I PN 

U C 

V BW 

I 

out 


PN 

U C 

V BW 

out 

I out 

Type 

I out 


Type 

12.5 ± 42.5 

Fluxgate 

+ 5/0 2.5V or V 

CAS 

ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+105 8 CKSR 25-NP 5) 2 x ± 

2 x 20 

60 


A A 

V 

@ I PN 

kHz 

°C 

A A 

V 

@ I PN 

kHz 

°C 

% 

% 

10 ± 25 O/L + 5/0 2.5V or V ref 

±0.8V DC-240 (-3dB) 1 -40...+105 20 HLSR 10-P 5) 

15 ± 37.5 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 13 HO 15-NP-0000 5) 

10 ± 25 O/L + 5/0 2.5V or V ref 

±0.8V DC-240 (-3dB) 1 -40...+105 SMD SMD 21 HLSR 10-SM 5) 

HO 15-NSM- 

15 ± 37.5 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

0000 5) 

10 ± 25 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-240 (-3dB) 1 -40...+105 20 HLSR 10-P/SP33 5) 

HO 15-NP/ 

15 ± 37.5 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 13 

SP33-1000 5) 

10 ± 25 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-240 (-3dB) 1 -40...+105 SMD SMD 21 

HLSR 10-SM/ 

HO 15-NSM/ 

SP33 5) 

15 ± 37.5 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

SP33-1000 5) 

10 ± 30 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.4 -25...+85 15 HXN 10-P 

15 ± 45 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.4 -25...+85 15 HXN 15-P 

2 x 2 x ± 

O/L ± 15 2 x 4 V DC-50 (+/-3dB) 

10 30 

3.75 -40...+85 16 HXD 10-P DM 

2 x ± 

2 x 15 

45 


11 ± 22 C/L ± 15 33 mA DC-150 (-1dB) 0.5 -25...+70 17 LA 35-NP 


12 ± 18 C/L ± 15 24 mA DC-150 (-1dB) 0.5 -40...+85 17 LA 25-NP 

15 ± 48 C/L + 5/0 2.5V or V ref 

±0.625V DC-200 (-1dB) 0.7 -40...+85 10 LTSR 15-NP 5) 


Fluxgate 

15 ± 51 

CAS 

+ 5/0 2.5 V±0.625 V DC-300 (+/-3dB) 0.8 -40...+85 11 CAS 15-NP 

12.5 ± 25 C/L + 5/0 12.5 mA DC-300 (-1dB) 0.7 -40...+85 19 LTSP 25-NP 

Fluxgate 

15 ± 51 

CAS 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+85 12 CASR 15-NP 5) 

12.5 ± 31.25 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 13 HO 25-NP-0000 5) 

Fluxgate 

15 ± 51 

CAS 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+105 8 CKSR 15-NP 5) 

12.5 ± 31.25 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

HO 25-NSM- 

Fluxgate 

0000 5) 

16.67 ± 50 

CAS 

+ 5/0 2.5 V±0.625 V DC-300 (+/-3dB) 0.8 -40...+85 11 CAS 50-NP 

12.5 ± 31.25 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 13 

HO 25-NP/ 

Fluxgate 

SP33-1000 5) 

16.67 ± 50 

CAS 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+85 12 CASR 50-NP 5) 

12.5 ± 31.25 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

HO 25-NSM/ 

SP33-1000 5) 

17 ± 34 C/L ± 15 34 mA DC-150 (-1dB) 0.5 -25...+70 17 LA 35-NP 

12.5 ± 37.5 

Fluxgate 

CAS 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+105 8 CKSR 50-NP 5) 

20 ± 50 O/L + 5/0 2.5V or V ref 

±0.8V DC-240 (-3dB) 1 -40...+105 20 HLSR 20-P 5) 

12.5 ± 40 C/L + 5/0 2.5 V±0.625 V DC-200 (-1dB) 0.7 -40...+85 9 LTS 25-NP 

20 ± 50 O/L + 5/0 2.5V or V ref 


12.5 ± 40 C/L + 5/0 2.5V or V ref 

±0.625V DC-200 (-1dB) 0.7 -40...+85 10 LTSR 25-NP 5) 

HLSR 20-P/ 

20 ± 50 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-240 (-3dB) 1 -40...+105 20 

SP33 5) 

12.5 ± 42.5 

Fluxgate 

+ 5/0 2.5 V±0.625 V DC-300 (+/-3dB) 0.8 -40...+85 11 CAS 25-NP 

HLSR 20-SM/ 

CAS 

20 ± 50 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-240 (-3dB) 1 -40...+105 SMD SMD 21 

SP33 5) 

12.5 ± 42.5 

Fluxgate 

+ 5/0 2.5V or V 

CAS 

ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+85 12 CASR 25-NP 5) 

20 ± 60 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.4 -25...+85 15 HXN 20-P 

PCB 

Aperture, 

busbar, other 

PCB 

Other 

UR or UL 

Packaging No 

Features 

I P 

Technology 

X @ I PN 

T A 

= 25°C 

T A 

PCB 

Connection 

Aperture, 

busbar, other 

PCB 

Other 

UR or UL 

Packaging No 

Features 

DRS / REU 

21 

20 

10 19 8 

11 12 

14 13 

9 

15 

16 

17 

18 

Notes: 


5) Ref IN 

& Ref out 

modes 



17

DRS / REU 

I PN = 2.67 A ... 25 A 

I PN 

A 

2.67 ; 5 

; 8.33 

4 ; 7.5 

; 12.5 

I P 

A 

± 6.67 ; ± 

12.5 ; ± 20.83 

± 10 ; ± 18.75 

; ± 31.25 

Technology 

U C 

V 

O/L + 5/0 

O/L + 5/0 

V out 

I out 

@ I PN 

2.5 ; 1.65 ; 1.5 ; 

0.5 V or V ref 

±0.8V 

2.5 ; 1.65 ; 1.5 ; 


±0.8V 

BW 

kHz 

DC-100 ; 250 

; 600 (-3dB) 

DC-100 ; 250 

; 600 (-3dB) 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Connection 

Primary 

Aperture, 

busbar, other 

DRS / REU 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

1 -40...+105 13 

1 -40...+105 13 

Type 

Open-loop 

HO 25-NPPR 5) 

Orange for default setting 

HO 25-NPPR 5) 


Features 

P 

P 

HO SERIES 

Current Transducers with Advanced ASIC Technology Integrating Intelligent and 

Interactive Functions 

Any logistics manager will appreciate the value of a single stock item that covers two or more part numbers: in the case of a 

current transducer, having one type that can cover several current ranges, offer various response times, and provide several 

choices for the internal reference voltage, all configurable by the engineering team. Achieving that flexibility has been the key 

motivation for LEM engineers while optimizing the cost and reducing the size, together with improving performance. 

Special effort has been focused on a new Application Specific Integrated Circuit (ASIC) to help achieve these goals, resulting 

in a new generation of ASIC specific current transducers based on the Open Loop Hall effect technology leading to the 

development of the HO series. 

DRS / REU 

8 ; 15 ; 25 

± 20 ; ± 37.5 

; ± 62.5 

O/L + 5/0 

2.5 ; 1.65 ; 1.5 ; 


±0.8V 

DC-100 ; 250 

; 600 (-3dB) 

1 -40...+105 13 

HO 25-NPPR 5) 


P 

2.67 ; 5 

; 8.33 

4 ; 7.5 

; 12.5 

± 6.67 ; ± 

12.5 ; ± 20.83 

± 10 ; ± 18.75 

; ± 31.25 

O/L + 5/0 

O/L + 5/0 

2.5 ; 1.65 ; 1.5 ; 


±0.8V 

2.5 ; 1.65 ; 1.5 ; 


±0.8V 

DC-100 ; 250 

; 600 (-3dB) 

DC-100 ; 250 

; 600 (-3dB) 

1 -40...+105 SMD SMD 14 

1 -40...+105 SMD SMD 14 

HO 25-NSMPR 5) 




P 

P 

New ASIC die, a complete Open Loop Hall 

effect current transducer on a single chip. 

8 ; 15 ; 25 

± 20 ; ± 37.5 

; ± 62.5 

O/L + 5/0 

2.5 ; 1.65 ; 1.5 ; 


±0.8V 

DC-100 ; 250 

; 600 (-3dB) 

1 -40...+105 SMD SMD 14 



P 

2.67 ; 5 

; 8.33 

± 6.67 ; ± 

12.5 ; ± 20.83 

O/L + 3.3/0 

2.5 ; 1.65 ; 1.5 ; 0.5 

V or V ref 

±0.460V 

DC-100 ; 250 

; 600 (-3dB) 

1 -40...+105 13 

HO 25-NPPR/SP33 5) 


P 

4 ; 7.5 

; 12.5 

± 10 ; ± 18.75 

; ± 31.25 

O/L + 3.3/0 

2.5 ; 1.65 ; 1.5 ; 0.5 

V or V ref 

±0.460V 

DC-100 ; 250 

; 600 (-3dB) 

1 -40...+105 13 



P 

8 ; 15 ; 25 

± 20 ; ± 37.5 

; ± 62.5 

O/L + 3.3/0 

2.5 ; 1.65 ; 1.5 ; 0.5 

V or V ref 

±0.460V 

DC-100 ; 250 

; 600 (-3dB) 

1 -40...+105 13 



P 

With this ASIC at its heart, the HO models are designed for current measurements from 2.67 A RMS 

to 25 A RMS 

nominal, with nine 

possible current ranges selectable either by digital programmability or by multi-range PCB configuration. 

Possible nominal ranges of HO 25-NPPR/-NSMPR with the various primary bus bar configurations 

2.67 ; 5 

; 8.33 

± 6.67 ; ± 

12.5 ; ± 20.83 

O/L + 3.3/0 

2.5 ; 1.65 ; 1.5 ; 0.5 

V or V ref 

±0.460V 

DC-100 ; 250 

; 600 (-3dB) 

1 -40...+105 SMD SMD 14 

HO 25-NSMPR/SP33 5) 


P 

4 ; 7.5 

; 12.5 

± 10 ; ± 18.75 

; ± 31.25 

O/L + 3.3/0 

2.5 ; 1.65 ; 1.5 ; 0.5 

V or V ref 

±0.460V 

DC-100 ; 250 

; 600 (-3dB) 

1 -40...+105 SMD SMD 14 



P 

Number of primary turns 

Range 1 

I PN 

= 8 A 

Primary current 

Range 2 

I PN 

= 15 A 

Range 3 

I PN 

= 25 A 

8 ; 15 ; 25 

± 20 ; ± 37.5 

; ± 62.5 

O/L + 3.3/0 

2.5 ; 1.65 ; 1.5 ; 0.5 

V or V ref 

±0.460V 

DC-100 ; 250 

; 600 (-3dB) 

1 -40...+105 SMD SMD 14 



P 

1 8 A 15 A 25 A 

2 4 A 7.5 A 12.5 A 

14 13 

3 2.67 A 5 A 8.33 A 

Recommended 

PCB Connection 

Notes: 

5) Ref IN 

& Ref out 

modes 

P = Programmable by the user at any time for the current range (between 3 ranges) ; The internal reference (between 4 references) ; The response 

time (between 3 response times) ; Lower comsumption mode ; Overcurrent detection level ; Device faulty indication mode ; Standby mode. 


18 19

HO SERIES 

HO’s main benefits include the following 

HO SERIES 

HO name and codification 

DRS / REU 

• Three programmable current ranges: 8 A RMS 

, 15 A RMS 

, 25 A RMS 

(25 A RMS 

set by default) 

• A broad range of programmable functions including Low power mode, Standby mode, and EEPROM control (fault reporting) 

• Single + 3.3 V or + 5 V power supply (in two different HO versions) 

• Offset and gain drifts two times better than the previous generation 

• Programmable over-current detection (OCD) function provided on a dedicated pin, to be set by the user over 16 

programmable levels up to 5.8 x I PN 

(the nominal primary current). The OCD output turns on within 2 μs when programmed 

over-current occurs, switching from a high (5 V) to a low level (0 V). The over-current threshold is detected with 10 % 

accuracy; the user can set a minimum duration of the OCD output pulse of 1 ms if required, to ensure that a short overload 

can still be detected by an external micro-controller 

• Programmable slow or quick response time (2 to 6 μs) by choosing specific output filters 

• Four programmable internal reference voltages: 2.5, 1.65, 1.5 or 0.5 V (with + 5 V power supply), available on a dedicated pin 

• Possible use of an external voltage reference from 0.5 to 2.65 V (with + 5 V power supply) 

DRS / REU 

• Measuring range up to 2.5 x I PN 

• -40 to +105 °C operating temperature range. 

Only V ref IN 

Code: 4 

• High accuracy at +25 °C: 1% of I PN 

and at +85 °C: 2.9% of I PN 

• Creepage & clearance distances: 8 mm + Comparative Tracking Index 600 V 

• Small device outline: 12 (W) x 23 (L) x 12 (H)mm 

• Through-hole and SMT packages 

Key parameters of HO 25-NPPR/-NSMPR models 

Programmable 

Rating I PN 

(A RMS 

) 

8 or 15 or 25 

Accuracy @ +25 °C 

(% of I PN 

) 

Measuring range I PM 

(A) +/- 2.5 x I PN 

Accuracy @ +105 °C 

(% of I PN 

) 

Linearity (% of I PN 

) 0.5 

Supply Voltage (VDC) + 3.3 or + 5 +/-10 % 

Programmable internal 

Reference V Ref OUT 

(V) 

Frequency Bandwidth 

(kHz) (3 dB) 

1 

3.8 

0.5 / 1.5 / 1.65 / 2.5 

DC..100 to 600 

Analog Voltage Output 

(V) @ I PN 

0.8 Offset drift (mV/K) +/-0.095 

Programmable Response 

time @ 90 % of I PN 

tr (us) 

2 - 3.5 - 6 Gain drift (ppm/K) +/- 220 

Users program the HO transducer through a connection to a host microcontroller: when the V Ref 

pin is forced to the supply 

voltage, the output pin becomes the I/O port of a single wire bus interface. Over this interface, serial data comprising a 12-bit 

word conveys the user’s configuration choices, such as, amongst others: range selection, the internal refe rence voltage, and 

the over-current detection threshold. Data is sent over this interface to the transducer at 10 kbits/s, and programming takes only 

a few hundred milliseconds. This programming procedure may be carried out at any time, so the operating parameters of the HO 

transducer may be re-assigned, even during operation of the device in its application. 

For users who require transducers already programmed to a single set of operating parameters, LEM can also offer models with 

performance and function already set at the factory. 

20 21

I PN = 25 A ... 40 A 

I PN 

I P 

A A 

Technology 

U C 

V 

V out 

I out 

@ I PN 


BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 


Open-loop 

Closed-loop 

Fluxgate 

PCB 

Connection 

Primary 

Aperture, 

busbar, other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Connection 

Primary 

Aperture, 

busbar, other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

DRS / REU 

25 ± 36 C/L ± 15 25 mA DC-150 (-1dB) 0.5 -40...+85 17 LA 25-NP 

25 ± 36 C/L ± 15 25 mA DC-150 (-1dB) 0.5 -40...+85 22 LA 25-NP/SP25 LP 

25 ± 50 C/L + 5/0 12.5 mA DC-300 (-1dB) 0.7 -40...+85 19 LTSP 25-NP 


25 ± 62.5 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 13 HO 25-NP-0000 5) 

25 ± 85 

25 ± 85 

25 ± 75 

25 ± 75 

25 ± 75 

Fluxgate 

CAS 

Fluxgate 

CAS 

Fluxgate 

CAS 

Fluxgate 

CAS 

Fluxgate 

CAS 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+85 12 CASR 25-NP 5) 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+105 8 CKSR 25-NP 5) 

+ 5/0 2.5 V±0.625 V DC-300 (+/-3dB) 0.8 -40...+85 11 CAS 50-NP 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+85 12 CASR 50-NP 5) 

+ 5/0 2.5V or V ref 

±0.625V DC-300 (+/-3dB) 0.8 -40...+105 8 CKSR 50-NP 5) 

DRS / REU 

25 ± 62.5 O/L + 5/0 2.5V or V ref 

±0.8V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

25 ± 62.5 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 13 

HO 25-NSM- 

0000 5) 

HO 25-NP/ 

SP33-1000 5) 

32 ± 80 O/L + 5/0 2.5V or V ref 

±0.8V DC-240 (-3dB) 1 -40...+105 20 HLSR 32-P 5) 

32 ± 80 O/L + 5/0 2.5V or V ref 


25 ± 62.5 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-250 (-3dB) 1 -40...+105 SMD SMD 14 

HO 25-NSM/ 

SP33-1000 5) 

25 ± 75 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.4 -25...+85 15 HXN 25-P 

32 ± 80 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-240 (-3dB) 1 -40...+105 20 HLSR 32-P/SP33 5) 

32 ± 80 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-240 (-3dB) 1 -40...+105 SMD SMD 21 

HLSR 32-SM/ 

SP33 5) 

2 x 

25 

3 x 

25 

2 x ± 75 O/L ± 15 2 x 4 V DC-50 (+/-3dB) 1) 3.75 -40...+85 16 HXD 25-P DM 

3 x ± 75 O/L ± 12…15 3 x 4 V DC-10 (-3dB) 1) 4.85 -10...+75 23 HTT 25-P TM 

35 ± 70 C/L ± 15 35 mA DC-150 (-1dB) 0.5 -25...+70 17 LA 35-NP 

40 ± 100 O/L + 5/0 2.5V or V ref 

±0.8V DC-240 (-3dB) 1 -40...+105 20 HLSR 40-P 5) 


25 ± 80 C/L + 5/0 2.5V or V ref 

±0.625V DC-200 (-1dB) 0.7 -40...+85 10 LTSR 25-NP 5) 

40 ± 100 O/L + 5/0 2.5V or V ref 


40 ± 100 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-240 (-3dB) 1 -40...+105 20 HLSR 40-P/SP33 5) 

25 ± 85 

Fluxgate 

CAS 

+ 5/0 2.5 V±0.625 V DC-300 (+/-3dB) 0.8 -40...+85 11 CAS 25-NP 

40 ± 100 O/L + 3.3/0 1.65V or V ref 

±0.460V DC-240 (-3dB) 1 -40...+105 SMD SMD 21 

HLSR 40-SM/ 

SP33 5) 

14 13 

8 

11 12 

21 20 

10 19 9 

15 

17 22 

18 

16 

23 

Notes: 


5) Ref IN 

& Ref out 

modes 

LP = Longer Pins 


TM = Triplet Measurement 


23

I PN = 50 A ... 88 A 

I PN 

I P 

A A 

Technology 

U C 

V 

V out 

I out 

@ I PN 


BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 


Open-loop 

Closed-loop 

Fluxgate 

PCB 

Connection 

Primary 

Aperture, 

busbar, other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Connection 

Primary 

Aperture, 

busbar, other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

DRS / REU 

50 ± 70 C/L ± 12…15 50 mA DC-200 (-1dB) 0.65 6) -40...+85 24 LA 55-P 

50 ± 70 C/L ± 12…15 50 mA DC-200 (-1dB) 0.45 6) -40...+85 24 LA 55-P/SP23 

50 ± 70 C/L ± 12…15 50 mA DC-200 (-1dB) 0.65 6) -40...+85 25 LA 55-TP 

50 ± 100 C/L ± 12…15 25 mA DC-200 (-1dB) 0.65 6) -40...+85 24 LA 55-P/SP1 

50 ± 150 

50 ± 150 

Fluxgate 

CAS 

Fluxgate 

CAS 

+ 5/0 

+ 5/0 

2.5V or V ref 

±0.625V 

2.5V or V ref 

±0.625V 

DC-300 (+/-3dB) 0.8 -40...+85 12 CASR 50-NP 5) 

DC-300 (+/-3dB) 0.8 -40...+105 8 CKSR 50-NP 5) 

50 ± 150 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.4 -25...+85 15 HXN 50-P 

50 ± 150 O/L ± 15 4 V DC-50 (-3dB) 1) 2 -25...+85 28 HAL 50-S 

DRS / REU 

50 ± 100 C/L ± 12…15 25 mA DC-200 (-1dB) 0.65 6) -40...+85 25 LA 55-TP/SP1 

50 ± 150 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 29 HAS 50-S 

50 ± 100 C/L ± 12…15 25 mA DC-200 (-1dB) 0.65 6) -40...+85 25 LA 55-TP/SP27 

50 ± 150 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 30 HAS 50-P 

50 ± 100 O/L ± 12…15 4 V DC-10 (-1dB) 1) 3.4 -10...+70 26 HTR 50-SB SC 

50 ± 150 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.75 -40...+80 31 HTB 50-P 

50 ± 110 C/L ± 12…15 25 mA DC-200 (-1dB) 0.3 -25...+85 27 LAH 50-P 

50 ± 150 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.75 -40...+80 32 HTB 50-TP 

50 ± 125 O/L + 5/0 

2.5V or V ref 

±0.8V 

DC-240 (-3dB) 1 -40...+105 20 HLSR 50-P 5) 

50 ± 150 O/L + 12…15 

U C 

/2 V +/- 

1.667 V 

DC-50 (-3dB) 1) 1.5 -25...+85 33 HTB 50-P/SP5 

50 ± 125 O/L + 5/0 

50 ± 125 O/L + 3.3/0 

50 ± 125 O/L + 3.3/0 

50 ± 150 

Fluxgate 

CAS 

2.5V or V ref 

±0.8V 

1.65V or V ref 

±0.460V 

1.65V or V ref 

±0.460V 

+ 5/0 2.5 V±0.625 V 

DC-240 (-3dB) 1 -40...+105 SMD SMD 21 HLSR 50-SM 5) 

DC-240 (-3dB) 1 -40...+105 20 

DC-240 (-3dB) 1 -40...+105 SMD SMD 21 

DC-300 

(+/-3dB) 

HLSR 50-P/ 

SP33 5) 

HLSR 50-SM/ 

SP33 5) 

0.8 -40...+85 11 CAS 50-NP 

50 ± 150 O/L + 12…15 

50 ± 150 O/L + 5/0 

3 x 50 

3 x 75 

3 x ± 

150 

3 x ± 

225 

U C 

/2 V +/- 

1.667 V 

2.5V or V ref 

±0.625V 

DC-50 (-3dB) 1) 1.5 -25...+85 34 HTB 50-TP/SP5 

DC-50 (-3dB) 1) 1.4 -40...+85 35 HASS 50-S 5) 

O/L ± 12…15 3 x 4 V DC-10 (-3dB) 1) 3.75 -10...+75 23 HTT 50-P TM 

O/L ± 12…15 3 x 4 V DC-10 (-3dB) 1) 3.75 -10...+75 23 HTT 75-P TM 

3 x 88 

3 x ± 

240 

C/L ± 15 3 x 22 mA DC-200 (-1dB) 1 -40...+85 36 LTT 88-S TM 

8 

11 12 

23 

27 

21 20 25 

35 

15 

26 

29 

30 

24 

31 

33 

32 

34 

28 

36 

Notes: 


5) Ref IN 

& Ref out 

modes 

6) Accuracy calculated with max electrical offset instead of typical electrical offset @ U C 

= ± 15 V 

SC = Split Core 



25

I PN = 100 A ... 200 A 

I PN = 200 A ... 300 A 

DRS / REU 

Open-loop 

DRS / REU 

Open-loop 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Connection 

Primary 

Aperture, 

busbar, 

other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Connection 

Primary 

Aperture, 

busbar, 

other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 


200 ± 500 O/L + 12…15 

U C 

/2 V +/- 

1.667 V 

DC-50 (-3dB) 1) 1.5 -25...+85 33 HTB 200-P/SP5 

DRS / REU 

100 ± 300 O/L ± 15 4 V DC-50 (-3dB) 1) 2.7 -10...+80 37 HAC 100-S 

100 ± 300 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 28 HAL 100-S 

100 ± 300 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 38 HTA 100-S 

100 ± 300 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 29 HAS 100-S 

100 ± 300 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 30 HAS 100-P 

200 ± 600 O/L ± 15 4 V DC-50 (-3dB) 1) 2.7 -10...+80 37 HAC 200-S 

200 ± 600 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 28 HAL 200-S 

200 ± 600 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 38 HTA 200-S 

200 ± 600 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 29 HAS 200-S 

DRS / REU 

100 ± 300 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.75 -40...+80 31 HTB 100-P 

200 ± 600 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 30 HAS 200-P 

100 ± 300 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.75 -40...+80 32 HTB 100-TP 

200 ± 600 O/L ± 15 4 V DC-25 (-3dB) 1) 1.75 -40...+105 42 HAT 200-S 

100 ± 300 O/L + 12…15 

U C 

/2 V +/- 

1.667 V 

DC-50 (-3dB) 1) 1.5 -25...+85 33 HTB 100-P/SP5 

200 ± 600 O/L + 5/0 

2.5V or V ref 

±0.625V 

DC-50 (-3dB) 1) 1.4 -40...+85 35 HASS 200-S 5) 

100 ± 300 O/L + 12…15 

U C 

/2 V +/- 

1.667 V 

DC-50 (-3dB) 1) 1.5 -25...+85 34 HTB 100-TP/SP5 

300 ± 450 O/L ± 12…15 4 V DC-8 (-1dB) 1) 3.75 -10...+70 39 HOP 300-SB SC 

100 ± 300 O/L + 5/0 

2.5V or V ref 

±0.625V 

DC-50 (-3dB) 1) 1.4 -40...+85 35 HASS 100-S 5) 


3 x 100 3 x ± 300 O/L ± 12…15 3 x 4 V DC-10 (-3dB) 1) 2.7 -10...+75 23 HTT 100-P TM 

150 ± 450 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.75 -40...+80 31 HTB 150-P 

3 x 150 3 x ± 450 O/L ± 12…15 3 x 4 V DC-10 (-3dB) 1) 2.7 -10...+75 23 HTT 150-P TM 


200 ± 300 O/L + 5/0 

200 ± 300 O/L + 5/0 

U C 

/2 V or 

V ref 

±1.25V 

U C 

/2 V or 

V ref 

±1.25V 

DC-50 (-3dB) 1) 1.4 -40...+105 41 HTFS 200-P 5) 

DC-50 (-3dB) 1) 1.4 -40...+105 40 HTFS 200-P/SP2 5) 


200 ± 500 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.75 -40...+80 31 HTB 200-P 

300 ± 600 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.75 -40...+80 31 HTB 300-P 

300 ± 600 O/L + 12…15 

U C 

/2 V +/- 

1.667 V 

DC-50 (-3dB) 1) 1.5 -25...+85 33 HTB 300-P/SP5 

300 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 2.7 -10...+80 37 HAC 300-S 

300 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 28 HAL 300-S 

300 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 38 HTA 300-S 

300 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 29 HAS 300-S 

300 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 30 HAS 300-P 

300 ± 900 O/L + 5/0 

2.5V or V ref 

±0.625V 

DC-50 (-3dB) 1) 1.4 -40...+85 35 HASS 300-S 5) 

26 

28 

23 

31 

33 

38 

39 

42 

40 

29 

30 

35 

32 

34 

Notes: 


5) Ref IN 

& Ref out 

modes 




27 

37 

41

I PN = 100 A ... 150 A 

I PN 

I P 

A A 

Technology 

U C 

V out 

I out 

V 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Connection 

Primary 

Aperture, 

busbar, 

other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

I PN = 150 A ... 366 A 

DRS / REU 

Closed-loop 

DRS / REU 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Connection 

Primary 

Aperture, 

busbar, 

other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Closed-loop 

Type 

Features 

100 ± 150 C/L ± 12…15 50 mA DC-200 (-1dB) 0.45 6) -40...+85 24 LA 100-P 

150 ± 212 C/L ± 12…15 150 mA DC-150 (-1dB) 0.5 -40...+85 Pending 51 LA 150-P/SP1 

DRS / REU 

100 ± 150 C/L ± 12…15 50 mA DC-200 (-1dB) 0.45 6) -40...+85 25 LA 100-TP 

100 ± 160 C/L ± 12…15 100 mA DC-200 (-1dB) 0.45 6) -25...+70 24 

LA 100-P/ 

SP13 

100 ± 160 C/L ± 12…15 50 mA DC-200 (-1dB) 0.3 -25...+85 27 LAH 100-P 

150 ± 212 C/L ± 12…15 75 mA DC-150 (-1dB) 0.5 -40...+85 Pending 52 LA 150-TP 

200 ± 300 C/L ± 12…15 100 mA DC-100 (-1dB) 0.65 -40...+85 47 LA 200-P 

200 ± 300 C/L ± 12…15 100 mA DC-100 (-1dB) 0.65 -25...+85 47 LA 200-P/SP4 

DRS / REU 

100 ± 200 C/L ± 12…15 100 mA DC-100 (-3dB) 0.4 -40...+85 43 LF 205-S/SP3 

200 ± 300 C/L ± 12…15 100 mA DC-100 (-1dB) 0.45 -25...+85 53 LAF 200-S 

125 ± 200 C/L ± 12…15 125 mA DC-100 (-1dB) 0.8 -40...+85 47 LA 125-P 

200 ± 420 C/L ± 12…15 100 mA DC-100 (-3dB) 0.4 -40...+85 43 LF 205-S 

125 ± 200 C/L ± 12…15 62.5 mA DC-100 (-1dB) 0.8 -25...+85 47 LA 125-P/SP1 

200 ± 420 C/L ± 12…15 100 mA DC-100 (-3dB) 0.4 -40...+85 45 LF 205-P 

125 ± 200 C/L ± 12…15 125 mA DC-100 (-1dB) 0.8 -25...+85 48 LA 125-P/SP3 PC 


125 ± 300 C/L ± 12…15 62.5 mA DC-100 (-1dB) 0.8 -40...+85 47 LA 125-P/SP4 

200 ± 420 C/L ± 12…15 100 mA DC-100 (-3dB) 0.4 -40...+85 46 LF 205-P/SP1 

125 ± 200 C/L ± 12…15 125 mA DC-100 (-3dB) 0.41 -40...+85 49 LAH 125-P 

300 ± 500 C/L ± 12…20 150 mA DC-100 (-1dB) 0.3 -40...+85 54 LF 305-S 

130 ± 200 C/L ± 12…15 130 mA DC-150 (-1dB) 0.5 -40...+85 Pending 50 LA 130-P 

300 ± 500 C/L ± 12…20 150 mA DC-100 (-3dB) 0.3 -40...+85 55 

LF 305-S/ 

SP10 

130 ± 200 C/L ± 12…15 65 mA DC-150 (-1dB) 0.5 -40...+85 Pending 50 LA 130-P/SP1 

300 ± 700 C/L ± 15 150 mA DC-50 (-3dB) 0.4 -40...+85 56 LA 306-S 

150 ± 212 C/L ± 12…15 75 mA DC-150 (-1dB) 0.5 -40...+85 Pending 51 LA 150-P 

366 ± 950 C/L ± 15 183 mA DC-100 (-1dB) 0.3 -10...+70 57 LT 305-S 

54 

53 

55 

25 

27 

56 

43 44 

45 

46 

49 

57 

24 

50 51 52 

47 

48 

Notes: 

6) Accuracy calculated with max electrical offset instead of typical electrical offset @ U C 

= ± 15 V 

PC = Pin Compatible LT 100-P 


29

I PN = 400 A ... 500 A 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

DRS / REU I PN = 500 A ... 800 A 

DRS / REU 

T A 

°C 

PCB 

Primary 

Connection 

Aperture, 

busbar, other 

PCB 

Secondary 

Other 

Open-loop Closed-loop Open-loop 

UR or UL 

Packaging No 

Type 

Features 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Primary 

Connection 

Aperture, 

busbar, other 

PCB 

Secondary 

Other 

UR or UL 

Packaging No 

Type 

Features 

400 ± 600 O/L ± 12…15 4 V DC-50 (-3dB) 1) 2.75 -40...+80 31 HTB 400-P 


DRS / REU 

400 ± 600 O/L + 12…15 U C 

/2 V +/- 1.667 V DC-50 (-3dB) 1) 1.5 -25...+85 33 HTB 400-P/SP5 


400 ± 600 O/L + 5/0 

400 ± 600 O/L + 5/0 

U C 

/2 V or V ref 

±1.25V 

U C 

/2 V or V ref 

±1.25V 

DC-50 (-3dB) 1) 1.4 -40...+105 41 HTFS 400-P 5) 

DC-50 (-3dB) 1) 1.4 -40...+105 40 

HTFS 400-P/ 

SP2 5) 


400 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 29 HAS 400-S 

500 ± 1000 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 28 HAL 500-S 

500 ± 1000 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 38 HTA 500-S 

500 ± 1500 O/L ± 15 4 V DC-50 (-3dB) 1) 2.7 -10...+80 37 HAC 500-S 

500 ± 1500 O/L ± 15 4 V DC-25 (-3dB) 1) 1.75 -40...+105 42 HAT 500-S 

500 ± 1500 O/L ± 15 4 V DC-25 (-3dB) 1) 2.75 -25...+85 61 HAX 500-S 


DRS / REU 

400 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 30 HAS 400-P 

600 ± 900 O/L + 5/0 

U C 

/2 V or V ref 

±1.25V 

DC-50 (-3dB) 1) 1.4 -40...+105 41 HTFS 600-P 5) 

400 ± 900 O/L + 5/0 

2.5V or V ref 

±0.625V 

DC-50 (-3dB) 1) 1.4 -40...+85 35 HASS 400-S 5) 

400 ± 1000 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 28 HAL 400-S 

600 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 29 HAS 600-S 

600 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 30 HAS 600-P 

400 ± 1000 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 38 HTA 400-S 

600 ± 900 O/L + 5/0 

2.5V or V ref 

±0.625V 

DC-50 (-3dB) 1) 1.4 -40...+85 35 HASS 600-S 5) 

400 ± 1200 O/L ± 15 4 V DC-50 (-3dB) 1) 2.7 -10...+80 37 HAC 400-S 

600 ± 1000 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 28 HAL 600-S 

400 ± 1200 O/L ± 15 4 V DC-25 (-3dB) 1) 1.75 -40...+105 42 HAT 400-S 

600 ± 1000 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 38 HTA 600-S 


600 ± 1800 O/L ± 15 4 V DC-50 (-3dB) 1) 2.7 -10...+80 37 HAC 600-S 

500 ± 800 C/L ± 15…24 100 mA DC-100 (-1dB) 0.3 -40...+70 58 LF 505-S 

600 ± 1800 O/L ± 15 4 V DC-25 (-3dB) 1) 1.75 -40...+105 42 HAT 600-S 


800 ± 1200 O/L + 5/0 

U C 

/2 V or V ref 

±1.25V 

DC-50 (-3dB) 1) 1.4 -40...+105 41 HTFS 800-P 5) 

500 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 29 HAS 500-S 

800 ± 1200 O/L + 5/0 

U C 

/2 V or V ref 

±1.25V 

DC-50 (-3dB) 1) 1.4 -40...+105 40 

HTFS 800-P/ 

SP2 5) 

500 ± 900 O/L ± 15 4 V DC-50 (-3dB) 1) 2.5 -10...+80 30 HAS 500-P 


500 ± 900 O/L + 5/0 

2.5V or V ref 

±0.625V 

DC-50 (-3dB) 1) 1.4 -40...+85 35 HASS 500-S 5) 

500 ± 1000 O/L ± 12…15 4 V DC-10 (-1dB) 1) 2.5 -10...+70 60 

HOP 500-SB/ 

SP1 

SC 

800 ± 1800 O/L ± 15 4 V DC-50 (-3dB) 1) 2.7 -10...+80 37 HAC 800-S 

800 ± 2400 O/L ± 15 4 V DC-25 (-3dB) 1) 1.75 -40...+105 42 HAT 800-S 

42 

39 

33 26 

38 

61 

40 

31 

33 

41 

37 

60 

35 

29 

33 30 

28 

Notes: 

58 


59 

5) Ref IN 

& Ref out 

modes 



31

I PN = 500 A AC 

... 2000 A AC 

I PN 

A AC 

Technology 

U C 

V 

V out 

I out 

@ I P 

BW 

kHz 

X @ I P 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Primary 

Aperture, 

busbar, 

other 

PCB 

Secondary 

Other 

UR or UL 

Packaging No 

Type 

Features 

I PN = 2000 A ... 20000 A 

DRS / REU 

Rogowski 

DRS / REU 

Connection 

BW 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

Open-loop 

PCB 

Connection 

Primary 

Aperture, 

busbar, 

other 

Secondary 

PCB 

Other 

Closed-loop 

UR or UL 

Packaging No 

Type 

Fluxgate 

Features 

DRS / REU 

500 Rogowski 

500 Rogowski 

2000 Rogowski 

2000 Rogowski 

Self 

powered 

Self 

powered 

Self 

powered 

Self 

powered 

2..M. f.I 

3) 4) 

PAC 

V 

M.dI P 

/dt V 2) 4) 700 (+3dB) 0.65 4) 7) -10...+65 

3) 4) 

2..M. f.I PAC 

V 

M.dI P 

/dt V 2) 4) 700 (+3dB) 0.80 4) 7) -10...+65 

2..M. f.I PAC 

V 

3) 4) 

M.dI P 

/dt V 2) 4) 500 (+3dB) 0.65 4) 7) -10...+65 

2..M. f.I PAC 

V 

3) 4) 

M.dI P 

/dt V 2) 4) 430 (+3dB) 0.8 4) 7) -10...+65 

Split core 

Ø 55 mm 

Max 

Split core 

Ø 55 mm 

Max 

Split core 

Ø 125 mm 

Max 

Split core 

Ø 125 mm 

Max 

1.5 m 

cable 

3 m 

cable 

1.5 m 

cable 

3 m 

cable 

62 RT 500 

63 RT 500/SP1 

64 RT 2000 

65 RT 2000/SP1 

2000 ± 5500 O/L ± 15 4 V DC-25 (-3dB) 1) 2.75 -25...+85 61 HAX 2000-S 

2000 ± 5500 O/L ± 15 4 V DC- 25(-1dB) 1) 2.75 -10...+80 70 HAXC 2000-S 

2500 ± 5500 O/L ± 15 4 V DC-25 (-3dB) 1) 2.75 -25...+85 61 HAX 2500-S 

4000 ± 4000 O/L ± 15 10 V DC-3 (-3dB) 1) 2 -25...+85 71 HAZ 4000-SB 

4000 ± 4000 O/L ± 15 20 mA DC-3 (-3dB) 1) 2 -25...+85 71 HAZ 4000-SBI 

4000 ± 4000 O/L ± 15 

4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (-3dB) 1) 2 -25...+85 71 

HAZ 4000-SBI/ 

SP1 

4000 ± 6000 C/L ± 24 800 mA DC-100 (-1dB) 0.3 -25...+70 72 LT 4000-S 

DRS / REU 

I PN = 1000 A ... 2000 A 

Open-loop 

Closed-loop 

4000 ± 6000 C/L ± 24 800 mA DC-100 (-1dB) 0.3 -25...+70 73 LT 4000-T 

4000 ± 12000 

Fluxgate 

IT 

± 24 1600 mA DC- 50(1dB) 8) 0.06 9) -40...+70 74 ITL 4000-S 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Connection 

Primary 

Aperture, 

busbar, 

other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

6000 ± 6000 O/L ± 15 10 V DC-3 (-3dB) 1) 2 -25...+85 71 HAZ 6000-SB 


6000 ± 6000 O/L ± 15 

4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (-3dB) 1) 2 -25...+85 71 

HAZ 6000-SBI/ 

SP1 

10000 ± 10000 O/L ± 15 10 V DC-3 (-3dB) 1) 2 -25...+85 71 HAZ 10000-SB 

1000 ± 1000 O/L ± 15 4 V DC-50 (-3dB) 1) 1.75 -25...+85 38 HTA 1000-S 

1000 ± 1500 C/L ± 15…24 200 mA DC-150 (-1dB) 0.3 -40...+85 66 LF 1005-S 



1000 ± 2500 O/L ± 15 4 V DC-25 (-3dB) 1) 1.75 -40...+105 42 HAT 1000-S 

1000 ± 3000 O/L ± 15 4 V DC-25 (-3dB) 1) 2.75 -25...+85 61 HAX 1000-S 

1200 ± 2500 O/L ± 15 4 V DC-25 (-3dB) 1) 1.75 -40...+105 42 HAT 1200-S 

1500 ± 2500 O/L ± 15 4 V DC-25 (-3dB) 1) 1.75 -40...+105 42 HAT 1500-S 


1500 ± 4500 O/L ± 15 4 V DC-25 (-3dB) 1) 2.75 -25...+85 61 HAX 1500-S 


2000 ± 3000 O/L ± 12…15 4 V DC-4 (-1dB) 1) 2.5 -10...+70 68 HOP 2000-SB/SP1 SC 


10000 ± 10000 O/L ± 15 

4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (-3dB) 1) 2 -25...+85 71 

HAZ 10000-SBI/ 

SP1 

10000 ± 15000 C/L ± 48…60 1 A DC-100 (-1dB) 0.3 -25...+70 75 LT 10000-S 

12000 ± 12000 O/L ± 15 10 V DC-3 (-3dB) 1) 2 -25...+85 71 HAZ 12000-SB 


12000 ± 12000 O/L ± 15 

4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (-3dB) 1) 2 -25...+85 71 


SP1 

14000 ± 14000 O/L ± 15 10 V DC-3 (-3dB) 1) 2 -25...+85 71 HAZ 14000-SB 


14000 ± 14000 O/L ± 15 

4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (-3dB) 1) 2 -25...+85 71 


SP1 

20000 ± 20000 O/L ± 15 10 V DC-3 (-3dB) 1) 2 -25...+85 71 HAZ 20000-SB 


2000 ± 3000 C/L ± 15…24 400 mA DC-100 (-1dB) 0.2 -40...+85 69 LF 2005-S 

66 

61 

42 

67 

70 

20000 ± 20000 O/L ± 15 

4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (-3dB) 1) 2 -25...+85 71 

75 


SP1 

72 73 

74 

Notes: 

1) Small signal bandwidth to avoid 

excessive core heating at high frequency 

2) Instantaneous 

3) For sinusoidal wave (f in Hz) 

4) M= Transfer ratio 0.064 H (+/- 5%): 

38 60 

RT models are provided with up to 

62 63 64 65 

71 

5 % manufacturing tolerance 

68 

7) Max positioning error 

8) 40 A RMS 

69 

9) X G 

= Global accuracy 



33

Current Transducers - Minisens 

DRS / REU 

DRS / REU 

Minisens – FHS model 

From 2 to 100 Amps 

To help your innovation, 

we make ourselves small. 

Traditional measurement systems are not used in markets 

such as low power domestic electrical products and air 

conditioning systems for a number of reasons. If isolation 

is needed in a shunt-based system, an optocoupler is 

also necessary, adding to the cost and bulk. For current 

measurements over approximately 10 A, the losses in the 

shunt become significant resulting in an unacceptable 

temperature rise. At lower current levels, the shunt will 

need to have a high resistance to ensure that its output is 

not too small. Generally, an amplifier may also be needed. 

Until today, these factors have been major limitations 

for the use of current measurement in smaller electrical 

systems. However, there is a growing demand for current 

measurement in such systems, as inverter control of 

electric motors becomes more popular, for greater 

control of speed and position, and improved energy 

efficiency. Fortunately, new techniques allow producing 

smaller and lower-cost transducers that can make current 

measurement a reality in such systems. 

The trend in power electronics is not different to that in 

other electronics fields: a greater degree of integration 

coupled with a lower component count. 

Minisens, FHS integrated LEM current transducer, for 

AC and DC isolated current measurement up to 100 

kHz, shows the way. This new product combines all the 

necessary electronics with a Hall-effect sensor and 

magnetic concentrators in a single eight-pin, surfacemount 

package (Fig. 1): A step towards miniaturization and 

manufacturing cost reduction (as part of a standard PCB 

assembly process). 

It can be isolated simply by mounting it on a printed 

circuit board on the opposite side to the track carrying 

the current to be measured, does not suffer from losses 

and can make use of PCB design techniques to adjust 

sensitivity and therefore remove the need for an amplifier. 

Working principle: 

Minisens/FHS converts the magnetic field of a sensed 

current into a voltage output. This ‘primary’ current flows 

in a cable or PCB track near the IC and is electrically 

isolated from it. Hall effect devices integrated in the 

IC are used to measure the magnetic field, this field 

being focused in the region of the Hall cells by magnetic 

concentrators placed on top of the IC. 

The IC sensitivity to the magnetic field of the primary 

current is 600 mV/mT max. 

This is the basic working principle of the 

Hall effect open-loop technology, but 

all incorporated into a single small IC 

package. 

The current sensed can be 

either positive or negative. 

The polarity of the magnetic 

field is detected to generate 

either a positive or negative 

voltage output around a voltage 

reference defined as the initial 

offset at no field. The standard 

initial offset is 2.5 V (internal 

reference). The user can specify 

an external reference between 

+2 and +2.8 V. 

It is manufactured in a standard 

CMOS process and assembled in a 

SO8-IC package. 

Design considerations: 

Ip 1 

The most common way to use Minisens is to locate it over 

a PCB track that is carrying the current that needs to be 

measured. To optimise the function of the transducer, 

some simple rules need to be applied to the track 

dimensions. By varying the PCB and track configuration, 

it is possible to measure currents ranging from 2 to 100 

Amps. One possible configuration places the IC directly 

over a single PCB track (Fig. 2). 

In this configuration, isolation is provided by the distance 

between the pins of the transducer and the track, and 

currents in the range from 2 to 20 A can be measured. 

Insulation can be improved by placing the transducer 

on the opposite side of the board, but still directly over 

the line of the track. The thickness of the board and the 

track itself will both affect the sensitivity, as they directly 

influence the distance between the sensing elements 

(located into the IC) and the position of the primary 

conductor. Sensitivity is also affected by the width of 

r 

the track (Fig. 3). It is important to note that sensitivity is 

greater for thinner tracks. However, the thinner the track, 

the quicker the temperature rises. 

Sensitivity (mV/A) 

120 

100 

80 

60 

40 

20 

0 

1 

Sensitivity function of track to magnetic sensor distance 

(70 microns thick track) 

nominal distance for a 

top side track 

1.235 2.905 

2 2.5 3 3.5 

1.5 

1 mm wide track 



nominal distance for a 

bottom side track 

with 1.6 mm PCB 

track axis to sensor distance (mm) 

Fig. 3: Sensitivity (mV/A) versus track width and distance 

between the track and the sensing elements. 

The maximum current that can be safely applied 

continuously is determined by the temperature rise of 

the track and the ambient temperature. The use of a 

track with varying width gives the best combination 

of sensitivity and track temperature rise. To maintain 

temperature levels, the width, thickness and shape of the 

track are very important. Minisens’ maximum operating 

temperature is 125°C. 

For low currents (under 10 A), it is advisable to make 

several turns with the primary track or to use a narrow 

track to increase the magnetic field generated by the 

primary current. 

As with a single track, it is better to have wider tracks 

around the Minisens than under it (to reduce temperature 

rise) (Figs. 4 and 5). 

This configuration is also possible on the opposite side of 

the PCB to the Minisens providing then a higher insulation 

configuration (Fig. 5) as creepage and clearance distances 

are improved (longer). 

The sensitivity can be increased further by other 

techniques, such as using a “jumper” (wire) over the 

Minisens to create a loop with the PCB track, or multiple 

turns can be implemented in different PCB layers. Larger 

currents can be measured by positioning the transducer 

farther from the primary conductor or by using a wider 

PCB track or busbar. Designs are unlimited, under PCB 

designer’s control, and can lead to needs for insulation, 

nominal current to measure, sensitivity optimisation, etc. 

This is full design flexibility. 

Special features for added value: 

Two outputs are available: one filtered, to limit the noise 

bandwidth, and one unfiltered which has a response 

time under 3 μs, for current short-circuit detection (IGBT 

protection) or threshold detection. 

Minisens operates from a + 5 V power supply. To reduce 

power consumption in sensitive applications, it can be 

switched to a standby mode by means of an external 

signal to reduce the consumption from 20 milliamps to 20 

microamps. 

In addition, a special care to the adjacent perturbing 

(stray) fields has to be brought. 

DRS / REU 

Figs. 4 and 5: Possible “multi-turn” designs. 

Fig. 2: One possible PCB design; The track is located 

underneath the Minisens 

Fig. 1: Minisens - FHS model 

34 35

Current Transducers - Minisens DRS / REU 

Minisens overall accuracy 

DRS / REU 

Minisens related: 

• Gain: +/- 3 % (better measured) 

• Initial offset: +/- 10 mV 

• Linearity: +/- 1.5 % (better measured) 

• Offset drift: +/- 0.15 mV/K 

• Gain drift: +/- 300 ppm/K 

In concrete application on a PCB 

Overall accuracy (% of I PN ) 

At + 25° C (Initial offset compensated): 4 % to 7 % 

Over temperature range ( ... + 85° C): 5 % to 8 % 

With calibration: 

(over temperature range ( ... + 85° C) < 4 % 

These mechanical parameters must be closely controlled 

in the production process. Alternatively, in-circuit 

calibration of the Minisens or the DSP can be used to 

avoid most of these errors. 

Evaluate Minisens in your 

application: Evaluation kits 

Several PCBs (Figs. 6 and 7) have been developed to 

demonstrate Minisens as a current transducer in different 

applications, and to validate simulations which were made 

to predict the transducer sensitivity: These are available 

on request for application testing. 

LEM design guides are also available to orientate and 

advise PCB designers in the building of their PCBs 

when using Minisens, in order to optimise the use of the 

transducer (on request). 

Two typical examples will show the advantages offered by 

Minisens in today’s applications: 

Washing Machines: 

Designers of modern washing machines are looking 

for more accurate control of the electric motor, to save 

energy by improving the efficiency of the system and 

Mechanical design related 

(distance and shape variations of the primary conductor vs 

the IC): 

• PCB thickness 

• Copper tracks thickness/width 

• Solder joints thickness 

• Correct positioning of Minisens 

protect the environment by adjusting 

washing time and water usage. They are 

also aiming to improve the performance 

of the machine, in terms of out-of balance 

detection, vibration reduction, different 

programs for different types of clothes 

and noise reduction. An inverter-based 

system offers this finer control, allowing 

the designer to have both new and 

improved functions. Such a system needs 

accurate measurement of motor current, 

and two Minisens transducers can be 

mounted directly onto the control PCB to 

provide the necessary measurements. 

Air-conditioning units: 

Traditionally, air-conditioning units have 

relied on simple on/off control of the 

motor. However, this has resulted in a 

wide variation of temperature and has required a relatively 

large motor, which is either off or running at full power 

– resulting in a lot of noise. Modern air conditioners use 

inverter control, starting the motor at full speed to adjust 

the temperature coarsely and then reducing the speed 

and oscillating closely around the target temperature 

(Fig. 9). 

Such a system produces less noise, requires less power 

to maintain the target temperature, and can use a smaller 

motor. Japanese air-conditioner manufacturers have 

already moved to this method and those in the United 

States, China and Europe are now following. 

Low cost UPSs as well as battery chargers 

can benefit from Minisens to ensure 

the current control as well as 

the fault protection (current 

overload detection) or to 

detect current presence. 

This fault protection 

function has to be fulfilled 

for electrical shutters, 

door openers and other 

equipment of that nature. 

Fig. 8: Motor control in washing machines 

DRS / REU 

Fig. 6: Minisens kits with low isolation 

(0.4 mm clearance/creepage) 

Kit 4 Kit 6 Kit 7 

Fig. 7: Minisens kits with 

high isolation 

(8 mm clearance/ 

creepage) 

Kit 5 Kit 9 Kit 8 

Fig. 9: Inverter control vs. conventional control 

I PN (A) @ Tamb = 85° C 

(Tpcb max 115° C) 

1 turn With jumper Multi turns 

16 10 5 

I PN (A) @ Tamb = 85° C 

(Tpcb max 115° C) 

1 turn 1 turn Multi turns 

16 30 5 

I PM (A) @ V out = 2 V 

30 10 11 

I PM (A) @ V out = 2 V 

55 78 16 


@ 600 mV/mT 

67.2 206.2 186.1 


@ 600 mV/mT 

36.3 25.8 125.6 

Picture provided by courtesy 

of PsiControl mechatronics 

36 37

I PN = 2 A ... 2000 A 

X @ 

DRS / REU 

CT 

PRIME I PN = 5 A ... 20000 A 

DRS / REU 

Open-loop 

Signal conditioning 

type 

I PN 

A 

Technology 

U C 

V 

BW 

kHz 

II PN 

T A 

= 

25 °C 

% 

T A 

°C 

Aperture 

mm 

Split Core 

DIN Rail 

Output 

UR or UL 

Packaging No 

Type 

Features 

Signal conditioning 

type 

I PN 

A 

Technology 

U C 

V 

BW 

kHz 

X @ II PN 

T A 

= 25 

°C 

% 

T A 

°C 

Aperture 

mm 

Split Core 

DIN Rail 

Output 

UR or UL 

Packaging No 

Type 

Features 

DRS / REU 

AC 

instantaneous 

50 CT 

100 CT 

5, 10, 20, 50, 

100, 150 

5, 10, 20, 50, 

100, 150 

10, 20, 50, 

100, 150, 200 

2, 5, 10, 20, 

50, 100, 

150, 200 

10, 20, 50, 

AC RMS 100, 150, 200 

2, 5, 10, 20, 

50, 100, 

150, 200 

AC True 

RMS 

10, 25, 50, 

75, 100, 

150, 200, 

300, 400 

10, 25, 50, 

75, 100, 

150, 200, 

300, 400 

2, 5, 10, 20, 

50, 100, 

150, 200 

2, 5, 10, 20, 

50, 100, 

150, 200 

10, 25, 50, 

75, 100, 

150, 200, 

300, 400 

10, 25, 50, 

75, 100, 

150, 200, 

300, 400 

CT 

CT 

CT 

CT 

CT 

CT 

Self 

powered 

Self 

powered 

0.05…0.06 1 -20...+70 ø 8 0-16mA 155 TT 50-SD 

0.05…0.06 1 -20...+70 ø 16 0-33mA 156 TT 100-SD 

Self 

powered 0.05…0.06 1.5 a) -20...+60 ø 16 0-5/10 V DC 

157 AT 5..150 B5/10 RMS (average) output 

Loop 

powered 

+20…30 

0.05…0.06 1.5 a) -20...+60 ø 16 4-20 mA DC 

158 AT 5..150 B420L RMS (average) output 

V DC 

Self 

21.7 x 

0.05…0.06 1 -20...+50 

powered 21.7 

O 0-10 V DC 

159 AK 50..200 B10 RMS (average) output 

Loop 

powered 0.02…0.1 1 -20...+50 21.7 x 

+24 V 

21.7 

DC 

O 4-20 mA DC 

159 AK 5..200 B420L RMS (average) output 

Self 

powered 0.05…0.06 1 -20...+50 ø 19 O 0-10 V DC 

161 AK 50..200 C10 RMS (average) output 

Loop 

powered 

+24 V DC 

0.02…0.1 1 -20...+50 ø 19 O 4-20 mA DC 

161 AK 5..200 C420L RMS (average) output 

PRiME +24 V DC 

0.03…2 1 a) -20...+60 ø 18.5 0-5/10 V DC 

162 AP 50..400 B5/10 

PRiME 

CT 

CT 

Loop 

powered 

+12…24 

V DC 

0.03…2 1 a) -20...+60 ø 18.5 4-20 mA DC 

163 AP 50..400 B420L 

Loop 

powered 0.01…0.4 1 -20...+50 21.7 x 

+24 V 

21.7 

DC 

O 4-20 mA DC 

160 AKR 5..200 B420L 

Loop 

powered 0.01…0.4 1 -20...+50 ø 19 O 4-20 mA DC 

161 AKR 5..200 C420L 

+24 V DC 

PRiME +24 V DC 

0.03…6 1 a) -20...+60 ø 18.5 0-5/10 V DC 

162 APR 50..400 B5/10 

PRiME 

375, 500, 750 CT 

1000, 1333, 

2000 

CT 

Loop 

powered 

+12..24 

0.03…6 1 a) -20...+60 ø 18.5 4-20 mA DC 

163 APR 50..400 B420L 

V DC 

Loop 

powered 0.01…0.4 1 -20...+50 ø 76 4-20 mA DC 

164 AKR 750 C420L J 

+24 V DC 

Loop 

powered 0.01…0.4 1 -20...+50 ø 76 4-20 mA DC 

164 AKR 2000 C420L J 

+24 V DC 

RMS output (average) 

0-5/10 V DC 

switch selectable 

voltage output 

Switch selectable 

measuring ranges 

RMS output (average) 



True RMS output 






True RMS output (average) 

0-5/10 V DC 

switch selectable 

voltage output 












DC & 

AC True 

RMS 

DC 

DC 

Bipolar 

100, 200, 

300, 400, 

500, 600, 

1000 

100, 200, 

300, 400, 

500, 600, 

1000 

500, 800, 

1000, 1500, 

2000 

500, 800, 

1000, 1500, 

2000 

4k, 6k, 

10k, 12k, 

14k, 20k 

4k, 6k, 

10k, 12k, 

14k, 20k 

4k, 6k, 

10k, 12k, 

14k, 20k 

50, 75, 

100, 150, 

200, 225, 

300, 400 

50, 75, 

100, 150, 

200, 225, 

300, 400 

50, 75, 

100, 150, 

200, 225, 

300, 400 

O/L 

O/L 

O/L 

O/L 

+20..50 

V DC 

+20..50 

V DC 

+20..50 

V DC 

+20..50 

V DC 

DC & 

0.02…6 

DC & 

0.02…6 

DC & 

0.02…6 

DC & 

0.02…6 

O/L +/- 15 V DC 

DC & 

0.015…3 

O/L +/- 15 V DC 

DC & 

0.015…3 

O/L +/- 15 V DC 

DC & 

0.015…3 

O/L 

O/L 

O/L 

50, 75, 

100, 150, O/L 

200, 225, 

300, 400 

5, 10, 20, 

50, 75, 100 O/L 

500, 800, 

1000, 1500, 

2000 

O/L 

1 a) -40...+70 ø 32 

1 a) -40...+70 ø 32 

1 a) -40...+70 104 x 40 

1 a) -40...+70 104 x 40 

0-5/10 

V DC 

165 DHR 100..1000 C5/10 

4-20 

mA DC 

165 DHR 100..1000 C420 

UL from 100 to 400 A 


UL from 100 to 400 A 


0-5/10 

V DC 

166 AHR 500..2000 B5/10 True RMS output 

4-20 

mA DC 

166 AHR 500..2000 B420 True RMS output 

1 a) -25...+85 162 x 42 0-10 V DC 

71 HAZ 4000..20000 -SRU True RMS output 

1 a) -25...+85 162 x 42 

1 a) -25...+85 162 x 42 

+20..45 

V DC 

DC 2 -20...+50 

+20..45 

V DC 

DC 2 -20...+50 

+20..45 

V DC 

DC 2 -20...+50 

21.7 x 

21.7 

21.7 x 

21.7 

21.7 x 

21.7 

+20..45 

V DC 

DC 1 b) -20...+50 21.7 x 

21.7 

+20..45 

V DC 

DC 1 -20...+50 ø 19.1 O 

 

 

 

O 

O 

O 

0-20 

mA DC 

71 HAZ 4000..20000 -SRI True RMS output 

4-20 

mA DC 

71 

HAZ 4000..20000 

-SRI/SP1 

0-5/10 

V DC 

167 DK 100..400 B5/10 

4-20 

mA DC 

167 DK 100..400 B420 

0-20 

mA DC 

167 DK 100..400 B020 

O 4-20 167 DK 100..400 B420 B 

mA DC 

4-20 

mA DC 

168 DK 20..100 C420 B 

Loop 

powered 

+20…30 

V DC 

DC 1 a) -10...+70 104 x 40 4-20 mA 169 DH 500..2000 B420L B 


Magnitude only - Not the 

direction 



Unipolar voltage output 


direction - 4 mA at Ip=0 



Unipolar current output 


direction - 0 mA at Ip=0 



Unipolar current output 

DC bipolar measurement 

(magnitude and direction) 

12 mA at Ip = 0 



12 mA at Ip = 0 



12 mA at Ip = 0 

DRS / REU 

71 

157 

158 

155 

156 

164 

166 

169 

162 163 

Notes: 

a) Excluding offset 

b) 2% for 400 A model 

O with adapter 

UL listed 

recognized 

168 161 

165 

159 

160 

167 


39

V PN = 10 V ... 2500 V 

V PN = 500 V ... 4200 V 

DRS / REU 

Closed-loop 

DRS / REU 

IDT 

Closed-loop 

Fluxgate 

I PN 

(V PN 

) 

mA 

I P 

(V P 

) 

mA 

Technology 

U C 

V 

I out 

@ I PN 

BW 

kHz 

X G 

T A 

= 25 °C 

% @ I PN 

with max offset taken 

T A 

°C 

UR or UL 

Packaging No 

Type 

±V PN 

V 

±V P 

V 

Technology 

U C 

V 

V out 

I out 

@ V PN 

BW 

kHz 

X G 

T A 

= 25 °C 

% @ V PN 

with max 

offset 

taken 

T A 

°C 

UR or UL 

Packaging No 

Type 

Connection 

primary 

Connection 

secondary 

DRS / REU 

10 (10 to 500 V) ± 14 (700 V) C/L ± 12…15 25 mA Note c) 0.9 0...+70 76 LV 25-P d) 

10 (100 to 2500 V) ± 20 (5000 V) C/L ± 15 50 mA Note c) 0.7 0...+70 77 LV 100 e) 

V PN = 50 V ... 400 V 

IDT 

Closed-loop 

Fluxgate 

500 750 

750 1125 

1000 1500 

1000 1500 

1200 1800 

Insulating digital 

technology 


technology 


technology 


technology 


technology 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 500 2 x M5 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 750 2 x M5 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 1000 2 x M5 

3 x M5 + 

Faston 

3 x M5 + 

Faston 

3 x M5 + 

Faston 

± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 81 DV 1000 Cable Cable 

± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 82 DV 1200/SP2 Cable M5 + Faston 

DRS / REU 

±V PN 

V 

±V P 

V 

50 75 

125 188 

150 225 

250 375 

Technology 


technology 


technology 


technology 


technology 

U C 

V 

V out 

I out 

@ V PN 

BW 

kHz 

X G 

T A 

= 25 °C 

% @ V PN 

with max 

offset taken 

T A 

°C 

UR or UL 

Packaging No 

Type 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 50 2 x M5 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 125 2 x M5 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 150 2 x M5 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 250 2 x M5 

Connection 

primary 

Connection 

secondary 

3 x M5 + 

Faston 

3 x M5 + 

Faston 

3 x M5 + 

Faston 

3 x M5 + 

Faston 

1500 2250 

1500 2250 

2000 3000 

2000 3000 

2000 3000 

2000 3000 

2800 4200 

3000 4500 


technology 


technology 


technology 


technology 


technology 


technology 


technology 


technology 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 1500 2 x M5 

3 x M5 + 

Faston 

± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 82 DV 1500 Cable M5 + Faston 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 2000 2 x M5 

3 x M5 + 

Faston 



± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 83 DV 2000/SP2 M5 M5 

± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 84 DV 2800/SP4 M5 M5 

± 15…24 50 mA DC-12 (3dB) 0.35 -40...+85 84 DV 3000/SP1 M5 M5 

200 300 C/L ± 12…15 25 mA Note c) 0.9 -25...+70 O 79 LV 25-200 Faston Faston 

4200 6000 


technology 

± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 81 DV 4200/SP3 Cable Cable 

400 600 C/L ± 12…15 25 mA Note c) 0.9 -25...+70 O 79 LV 25-400 Faston Faston 

4200 6000 


technology 

± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 84 DV 4200/SP4 M5 M5 

140 200 Fluxgate “C” ± 15 10 V/200 V DC-300 (-1dB) 0.2 @ Vp -40...+85 80 CV 3-200 2 x M5 4 x M5 

600 900 C/L ± 12…15 25 mA Note c) 0.9 -25...+70 79 LV 25-600 Faston Faston 

350 500 Fluxgate “C” ± 15 10 V/500 V DC-300 (-1dB) 0.2 @ Vp -40...+85 80 CV 3-500 2 x M5 4 x M5 


77 

78 

81 

82 

83 

84 



2500 3750 C/L ± 15 50 mA Note c) 0.9 0...+70 85 LV 100-2500 2 x M5 


3 x M5 + 

Faston 

3 x M5 + 

Faston 


3 x M5 + 

Faston 


3 x M5 + 

Faston 

700 1000 Fluxgate “C” ± 15 10 V/1000 V 

DC-500 

(-1dB @ 50 % V PN 

) 

0.2 @ V P 

-40...+85 80 CV 3-1000 2 x M5 4 x M5 

840 1200 Fluxgate “C” ± 15 10 V/1200 V 

DC-800 

(-1dB @ 40% V PN 

) 

0.2 @ V P 

-40...+85 80 CV 3-1200 2 x M5 4 x M5 

1000 1500 Fluxgate “C” ± 15 10 V/1500 V 

DC-800 

(-1dB @ 33% V PN 

) 

0.2 @ V P 

-40...+85 80 CV 3-1500 2 x M5 4 x M5 

76 80 

85 

1400 2000 Fluxgate “C” ± 15 10 V/2000 V 

DC-300 

(-1dB @ 25% V PN 

) 

0.2 @ V P 

-40...+85.+85 

80 CV 3-2000 2 x M5 4 x M5 

79 

Notes: 

c) See response time in individual data sheet 

d) The primary and secondary connections of this transducer are done on PCB 

e) Mechanical Mounting 

O) Recognition pending 


41

Wi-LEM 

Wireless Local Energy Meter 

DRS / REU 

Battery Powered 

Temperature & 

Humidity Transducer 

Wi-LEM COMPONENTS 

Energy Meter Node (EMN): 

DRS / REU 

Pulse Counter 

(Gas*,Electricity, 

Water) 

Wi-Pulse 

Wi-Zone 

Wi-Temp 

Open Data 

Architecture 

(Modbus Protocol) 

Single or three phase energy meter with embedded wireless 

data transmission module 

Measurement ranges: 

- Current from 20 to 2000 A 

- Voltage from 90 to 500 VAC 

DRS / REU 

Mesh Gate 

Auto-Configuration 

Measurement values: 

Compact Size 

Energy Meter Node 

Mesh Node 

Split-Core 

Current measurement 

Easy Mounting 

Received Signal 

Strength Indication 

Current (A) 

Voltage (V) 

Active Energy (kWh) 

Reactive Energy (kVarh) 

Apparent Energy (kVA) 

Frequency 

Interval Based Values 

(5 to 30 minutes Configurable Reading Intervals) 

L1 

L2 

L3 

SUM 

Avg Min Max Avg Min Max Avg Min Max 

L1 

Cummulated 

Values 

L2 

L3 

SUM 

Applications : 

Comprehensive Monitoring Solution 

Cut Installation Costs 

Easy Commissioning 

- Establish the breakdown of energy use (where does it all go?) 

- Allocate energy wastes to users 

- Determine efficiency of equipment 

- Audit before & after energy use for retrofit projects 

- Manage the load profile (peak demand) 

- Maintenance and Entreprise Asset Management 

Wi-Pulse: 

A transducer that counts and transmits pulses coming from 

meters like water or gas* 

Wi-Zone: 

Temperature and Humidity transducer 

Wi-Temp: 

Two inputs thermistors based temperature sensors 

Mesh Gate: 

A gateway managing the mesh network (up to 200 Nodes). 

It provides data through serial interface to a PC or RTU 

Mesh Node: 

Repeater linking various Nodes. They enable wireless 

communication throughout a large installation 

* an additional intrinsic safety barrier module is needed 


43

I PN = 0.4 A ... 400 A 

TTR - On-Board 

Closed-loop 

I PN = 400 A ... 500 A 


Closed-loop 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25 °C 

X G @ I PN 

T A 

= 25 °C 

% % 

T A 

°C 

PCB 

Connection 


Aperture, 

busbar, 

other 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25 °C 

X G @ I PN 

T A 

= 25 °C 

% % 

T A 

°C 

PCB 

Connection 


Aperture, 

busbar, 

other 

PCB 

Other 

UR or UL 

Packaging No 

Type 

Features 

0.4 ± 0.85 C/L ± 15 30 mA DC-150 (-1dB) 0.5 0.8 -40...+85 1 LA 25-NP/SP38 

400 ± 650 C/L ± 15 100 mA DC-50 (-3dB) 0.4 1 -40...+85 

Aperture 

13x30 mm 

Molex 108 LAC 300-S 

Molex 

70543-0003 

1.5 ± 2.2 C/L ± 15 24 mA DC-150 (-1dB) 0.5 0.9 -40...+85 1 LA 25-NP/SP34 

400 ± 1000 C/L ± 15 133 mA DC-50 (-3dB) 0.4 1.2 -40...+75 

Aperture 

13x30 mm 

Cable 109 

LAC 300-S/ 

SP7 

TTR 

2 ± 2.5 C/L ± 15 40 mA DC-150 (-1dB) 0.5 0.7 -40...+85 1 LA 25-NP/SP39 

5 ± 7 C/L ± 15 25 mA DC-150 (-1dB) 0.5 0.9 -40...+85 22 LA 25-NP/SP25 

350 ± 1200 C/L ± 15…24 175 mA DC-100 (-1dB) 0.3 0.5 -40...+85 Ø 27.5 mm 4 x M5 112 LTC 350-S Screen 

350 ± 1200 C/L ± 15…24 175 mA DC-100 (-1dB) 0.3 0.5 -40...+85 Ø 27.5 mm 

4 x M5 

+ Faston 

113 LTC 350-SF 

With feet 

Screen 


350 ± 1200 C/L ± 15…24 175 mA DC-100 (-1dB) 0.3 0.5 -40...+85 Busbar 

4 x M5 

+ Faston 

114 LTC 350-T Screen 



4 x M5 

+ Faston 

115 LTC 350-TF 

With feet 

Screen 



500 ± 700 C/L ± 24 100 mA DC-100 (-1dB) 0.4 1 -30...+70 

Split core 

Aperture 

67x67 mm 

AMP 111 

LA 500-SD/ 

SP2 

AMP CPC 11/4 

100 ± 200 C/L ± 12…15 

130 

± 

1000 

100 

mA 

DC-100 (-3dB) 0.4 0.6 -40...+85 

C/L ± 24 65 mA DC-50 (-3dB) 0.5 1.45 -40...+85 

200 ± 400 C/L ± 24 50 mA DC-50 (-3dB) 0.5 1 -40...+85 

200 ± 420 C/L ± 12…15 

100 

mA 

DC-100 (-3dB) 0.4 0.5 -40...+85 

200 ± 500 C/L ± 24 40 mA DC-100 (-1dB) 0.7 1 -30...+70 

200 ± 700 C/L ± 15 

300 ± 500 C/L ± 12…20 

300 ± 640 C/L ± 15 

100 

mA 

150 

mA 

100 

mA 

DC-50 (-3dB) 0.5 1.25 -40...+85 

Ø 15.5 

mm 

Aperture 

13x30 mm 

Aperture 

13x30 mm 

Ø 15.5 

mm 

Split core 

Aperture 

67x67 mm 

Aperture 

13x30 mm 

Molex 44 LF 205-S/SP5 

Molex 108 

Cable 110 

LAC 300-S/ 

SP5 

LAC 300-S/ 

SP8 

Molex 44 LF 205-S/SP1 

AMP 111 

Molex 108 

LA 200-SD/ 

SP3 

LAC 300-S/ 

SP1 

DC-100 (-3dB) 0.3 0.47 -40...+85 Ø 20 mm Molex 55 LF 305-S/SP10 

DC-50 (-3dB) 0.4 1 -40...+85 

300 ± 910 C/L ± 24 60 mA DC-50 (-3dB) 0.5 1.4 -40...+85 

400 ± 600 C/L ± 15 80 mA DC-50 (-3dB) 0.4 1.1 -40...+85 

Aperture 

13x30 mm 

Aperture 

13x30 mm 

Aperture 

13x30 mm 

Molex 108 

Molex 108 

Molex 108 

LAC 300-S/ 

SP2 

LAC 300-S/ 

SP4 

LAC 300-S/ 

SP3 

Molex Minifi t 

5566 

Molex 

70543-0003 


5566 

AMP CPC 11/4 

Molex 

70543-0003 


5566 

Molex 

70543-0003 

Molex 

70543-0003 

Molex 

70543-0003 

500 ± 1000 C/L ± 24 100 mA DC-100 (-1dB) 0.3 0.6 -40...+85 

Ø 30.2 

mm 

500 ± 1200 C/L ± 15…24 125 mA DC-100 (-1dB) 0.4 0.6 -40...+85 Ø 27.5 mm 

500 ± 1200 C/L ± 15…24 125 mA DC-100 (-1dB) 0.4 0.6 -40...+85 Ø 27.5 mm 



500 ± 1500 C/L ± 15…24 100 mA DC-100 (-1dB) 0.3 0.7 -40...+85 Ø 42 mm 

500 ± 1500 C/L ± 15…24 100 mA DC-100 (-1dB) 0.3 0.7 -40...+85 Ø 42 mm 

500 ± 1500 C/L ± 15…24 100 mA DC-100 (-1dB) 0.3 0.7 -40...+85 Ø 42 mm 



Cable 116 

4 x M5 

+ Faston 

4 x M5 

+ Faston 

4 x M5 

+ Faston 

4 x M5 

+ Faston 

4 x M5 

+ Faston 

4 x M5 

+ Faston 

4 x M5 

+ Faston 

4 x M5 

+ Faston 

4 x M5 

+ Faston 

LF 505-S/ 

SP23 

Screen 

112 LTC 500-S Screen 

113 LTC 500-SF 

With feet 

Screen 


115 LTC 500-TF 

With feet 

Screen 


118 LTC 600-SF 

119 LTC 600-SFC 

With feet 

Screen 

With feet + 

clamp 

Screen 


121 LTC 600-TF 

With feet 

Screen 

TTR 

1 22 

108 

109 

110 

55 

113 

118 

119 

112 

44 

117 

120 

111 

114 

121 

116 

115 

44 


45

I PN = 1000 A ... 2000 A 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

X G @ I PN 

T A 

= 25°C 

% % 

T A 

°C 

TTR 

PCB 

Primary 

Connection 

Aperture, 

busbar, 

other 

PCB 

Secondary 

Other 

UR or UL 

Packaging No 

Type 

Features 

I PN = 2000 A ... 4000 A 


Open-loop 

Closed-loop 

Fluxgate 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

X G @ I PN 

T A 

= 25°C 

% % 

T A 

°C 

TTR 

PCB 

Primary 

Connection 

Aperture, 

busbar, 

other 

PCB 

Secondary 

Other 

UR or UL 

Packaging No 

Type 

Features 

1000 ± 1100 O/L ± 15 10 V 

DC-10 

(-3dB) 1) 1.8 2.3 -40...+85 Ø 40 mm Screws 122 HTC 1000-S/SP4 

2000 ± 3500 C/L ± 15…24 400 mA 

DC-150 

(-1dB) 

0.2 0.325 -40...+85 Ø 56 mm LEMO 129 LF 2005-S/SP1 

LEMO EEJ.1B.304. 

CYC 

Internal screen 

1000 ± 1500 C/L ± 24 200 mA 

1000 ± 2400 C/L ± 15…24 200 mA 

DC-150 

(-1dB) 

DC-100 

(-1dB) 

0.3 0.5 -40...+85 

Ø 38.5 

mm 

0.3 0.4 -40...+85 Ø 42 mm 

4 x M4 123 LF 1005-S/SP14 Screen 

4 x M5 

+ Faston 


2000 ± 3500 C/L ± 15…24 400 mA 

2000 ± 3500 C/L ± 15…24 400 mA 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

0.2 0.325 -40...+80 Ø 56 mm LEMO 130 LF 2005-S/SP27 

0.5 0.55 -40...+85 Ø 56 mm 4 x M5 131 LF 2005-S/SP28 Screen 

LEMO EEJ.1B.304. 

CYC 


Reversed current 

1000 ± 2400 C/L ± 15…24 250 mA 

DC-100 

(-1dB) 

0.3 0.4 -40...+85 Ø 42 mm 

4 x M5 

+ Faston 

124 LTC 1000-S/SP1 Screen 

3000 ± 3300 O/L ± 15 10 V 

DC-10 


TTR 

1000 ± 3000 C/L ± 15…24 250 mA 

1000 ± 2400 C/L ± 15…24 200 mA 

1000 ± 2400 C/L ± 15…24 200 mA 

1000 ± 2400 C/L ± 15…24 200 mA 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

0.3 0.4 -40...+85 Ø 42 mm 4 x Faston 125 LTC 1000-S/SP25 Screen 

0.3 0.4 -40...+85 Ø 42 mm 

0.3 0.4 -40...+85 Ø 42 mm 

0.3 0.4 -40...+85 Ø 42 mm 

4 x M5 

+ Faston 

4 x M4 

+ Faston 

4 x M5 

+ Faston 

118 LTC 1000-SF 

126 LTC 1000-SF/SP24 

119 LTC 1000-SFC 

With feet 

Screen 

With long feet 

Footprint 

compatible with 

former 

LT 1000-SI series 

Screen 

With feet + clamp 

Screen 

3300 ± 5000 C/L ± 24 660 mA 

3300 ± 5000 C/L ± 24 660 mA 

4000 ± 6000 C/L ± 24 800 mA 

4000 ± 6000 C/L ± 24 800 mA 

4000 ± 6000 C/L ± 24 800 mA 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

0.3 0.32 -25...+70 Ø 102 mm LEMO 132 LT 4000-S/SP24 

LEMO EGJ.1B.304. 

CYC 

Screen 

0.3 0.32 -25...+70 Ø 102 mm 3 x M5 133 LT 4000-S/SP44 Internal screen 

0.3 0.5 -25...+70 Ø 102 mm 3 x M5 72 LT 4000-S 

0.3 0.5 -40...+70 Ø 102 mm AMP 134 LT 4000-S/SP12 

0.3 0.5 -40...+70 Ø 102 mm 3 x M5 72 LT 4000-S/SP34 

AMP CPC 13/9 

Test circuit 

Screen 

TTR 

1000 ± 2400 C/L ± 15…24 200 mA 

1000 ± 2400 C/L ± 15…24 200 mA 

1000 ± 2500 O/L ± 15 5 V 

2000 ± 2200 O/L ± 15 10 V 

2000 ± 3000 Fluxgate 

ITC 

± 24 800 mA 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

0.3 0.4 -40...+85 Busbar 

0.3 0.4 -40...+85 Busbar 

DC-10 

(-3dB) 1) 1.7 2 -40...+70 

Aperture 

18x54 mm 

4 x M5 

+ Faston 

4 x M5 

+ Faston 


121 LTC 1000-TF 

Burndy 127 HAR 1000-S 

DC-10 


DC-27 

(3dB) f) 0.0015 0.01 -40...+85 Ø 63 mm D-Sub 128 ITC 2000-S/SP1 

With feet 

Screen 

Burndy 

SMS6GE4 

Class 0.5R 

accuracy 

D-Sub male 

15cts 

Test circuit 

4000 ± 6000 C/L ± 24 800 mA 

4000 ± 6500 C/L ± 24 1 A 

4000 ± 6000 C/L ± 24 800 mA 

4000 ± 6500 C/L ± 24 1 A 

4000 ± 6000 Fluxgate 

ITC 

± 24 1600 mA 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

DC-100 

(-1dB) 

0.3 0.5 -40...+70 Ø 102 mm LEMO 135 LT 4000-S/SP35 

0.3 0.5 -40...+85 Ø 102 mm Cable 136 LT 4000-S/SP43 Screen 

0.3 0.5 -25...+70 Busbar 3 x M5 73 LT 4000-T 

0.3 0.5 -40...+85 Busbar Cable 137 LT 4000-T/SP40 

DC-82 

(3dB) f) 0.0003 0.05 -40...+85 Ø 102 mm 

7 x M5 

inserts 

138 ITC 4000-S 

LEMO EGJ.1B.305. 

CYC 

Test circuit 


Class 0.5R accuracy 

Test circuit 

72 132 133 

134 135 136 

73 137 

120 

121 

126 

118 

119 

117 

124 

125 

127 

122 

123 

129 

130 

128 

138 

131 

46 

Notes: 

f) 100 A RMS 



47

LTC Series - Modular Current Transducers 


LTC Series - Modular Current Transducers 


Mechanical adaptation accessories 

LTC 350 - 500 models 

Mechanical adaptation accessories 

LTC 600 - 1000 models 

TTR 

TTR 

∅ 

Accessories 

References 

Busbar Kit * (busbar : 155 x 25 x 6 mm) 93.34.41.100.0 

Busbar Kit * (busbar : 112 x 25 x 6 mm) 93.34.41.101.0 

Busbar Fastening Kit ** 93.34.41.200.0 

93.34.43.100.0 

* including all the necessary for its mounting 

such as screws, washers, nuts, 2 clamps, 

busbar. 

** as with * but without the busbar. 

*** including screws and 2 feet. 

Rms voltage value for partial discharge extinction depends on the busbar. 

Refer to the datasheet of the corresponding product. 

Lines Accessories References 

1 Busbar KIT * (busbar : 210 x 40 x 12 mm) 93.34.61.100.0 





6 Busbar KIT * (busbar : 36 mm Ø x 325 mm) 93.34.61.106.0 



9 

Busbar Fastening Kit (M5 x 25)** dedicated 93.34.61.200.0 

to busbars from lines 1 to 5 and lines 7, 8. 

10 

Busbar Fastening Kit (M5 x 40)** dedicated 93.34.61.201.0 

to busbar from line 6 

11 93.34.63.100.0 

* including all the necessary for its mounting 

such as screws, washers, nuts, 2 clamps, 

busbar. 

** as with * but without the busbar. 

*** including screws and 2 feet. 

Rms voltage value for partial discharge extinction depends on the busbar. 

Refer to the datasheet of the corresponding product. 

48 49

I PN 

= 2 A ... 10 A (Fault Detection) 

I PN 

A 

I P 

A 

2 ± 8 

Technology 

Flux 

“C” 

10 ± 10 Flux 

“C” 

U C 

V 

V out 

I out 

@ I PN 

± 15…24 20 mA 

± 24 10 V 

BW 

kHz 

DC-10 

(-3dB) 

DC-20 

(-3dB) 

X G 

@ I PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Primary 

Connection 

Aperture, busbar, other 

Secondary 

PCB 

UR or UL 

Packaging No 

Type 

3 -25...+70 Ø 63.2 mm Cable 139 CD 1000-S/SP6 

3 -40...+70 

2 x Busbars: 

1 of 20x20x358 mm 

and 1 of 

20x20x206 mm 

TTR - Spec. App. 

Other 

Cable 140 CD 1000-T/SP7 

Fluxgate 

Features 

Differential measurement: 

2 x 1200 A RMS 

Differential measurement: 

I P AC 

= 0.1 A AC 

... 20 A AC 

(Interference Frequencies Detection) 

I P 

A AC 

Technology 

0.1…20 

Measurement 

of alternating 

Rogowski 

signal on DC 

primary current 

up to 1000 ADC 

U C 

V 

Self 

powered 

V out 

I out 

@ I P 

BW 

kHz 

X @ I P 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Primary 

Connection 

Aperture, 

busbar, other 

Secondary 

PCB 

Other 

UR or UL 

Packaging No 

TTR 

Type 

2..M. f.I PAC 

V g) 

0.02…3 3 -40...+85 Ø 42 mm Cable 142 RA 1005-S 

M.dI P 

/dt V 2) 

Rogowski 

Features 

g) For sinusoidal 

wave 

2..M= 25.10 -6 H 

f in Hz 


Test circuit 

V PN 

= 0.03 V (Shunt Isolator) 

IDT 

0.1…20 

Measurement 


signal on DC 



Rogowski 

Self 

powered 

2..M. f.I PAC 

V h) 

0.02…3 3 -25...+70 Ø 102 mm Cable 143 RA 2000-S/SP1 

M.dI P 

/dt V 2) 

h) For sinusoidal 

wave 

2..M= 27.657.10 -6 H 

f in Hz 


Test circuit 

TTR 

V PN 

V P 

V V 

0.03 ± 0.045 

Technology 

Insulating 

digital 

technology 

U C 

V 

V out 

I out 

@ V PN 

BW 

kHz 

± 15…24 50 mA DC-10 

(3dB) 

X G 

@ V PN 

T A 

= 25°C 

% 

T A 

°C 

PCB 

Primary 

Connection 

Aperture, 

busbar, 

other 

0.2 -40...+85 Busbar 

PCB 

Secondary 

Other 

M5 

Connecting 

UR or UL 

Packaging No 

Type 

141 DI 30/SP1 

Features 

Shunt Isolator 

Class 1R accuracy 

vs EN50463 

when used with 

Class 0.2 shunt 

0.1…20 

Measurement 


signal on DC 



0.1…20 

Measurement 


signal on DC 



0.1…20 

Measurement 


signal on DC 



Rogowski 

Rogowski 

Rogowski 

Self 

powered 

Self 

powered 

Self 

powered 

2..M. f.I PAC 

V h) 

0.02…3 3 -40...+70 Ø 102 mm Cable 144 RA 2000-S/SP2 

M.dI P 

/dt V 2) 

2..M. f.I PAC 

V h) 

0.02…3 3 -40...+70 Ø 102 mm 

M.dI P 

/dt V 2) 

2..M. f.I PAC 

V h) 

0.02…3 3 

M.dI P 

/dt V 2) 

-40...+70 

IP57 

LEMO 

connector 

145 RA 2000-S/SP3 

Ø 102 mm Cable 146 RA 2000-S/SP4 


wave 

2..M= 27.657.10 -6 H 

f in Hz 


Test circuit 


wave 

2..M= 27.657.10 -6 H 

f in Hz 


Test circuit 


wave 

2..M= 27.657.10 -6 H 

f in Hz 


Test circuit 

TTR 

139 140 141 

0.1…20 

Measurement 


signal on DC 



Rogowski 

Self 

powered 

2 x 1500 A RMS 

51 

2..M. f.I PAC 

V h) 

0.02…3 3 -40...+70 

M.dI P 

/dt V 2) 

Busbar 

20x100x340 

mm 

Cable 147 RA 2000-T/SP2 


wave 

2..M= 27.657.10 -6 H 

f in Hz 


Test circuit 

143 144 145 146 

147 

142 112 

50 

Dedicated data sheets are the only recognized reference documents for the given performances and data - Data sheets: www.lem.com

I PN = 10 A ... 6000 A Open-loop 

Closed-loop 

Open-loop Closed-loop 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

T A 

°C 

TTR - Track. / Sub. 

PCB 

Primary 

Aperture, 

busbar, other 

Connection 

PCB 

Secondary 

Other 

UR or UL 

Packaging No 

Type 

Features 

I PN = 10000 A ... 20000 A 

I PN 

A 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

BW 

kHz 

X @ I PN 

T A 

= 25°C 

% 

TTR - Track. / Sub. 

T A 

°C 

PCB 

Primary 

Connection 

Aperture, 

busbar, other 

PCB 

Secondary 

Other 

UR or UL 

Packaging No 

Type 

Features 

10 ± 20 C/L + 24 

4-20 mA DC 

-25...+55 

DC 1 

@ -/+I a) P 

IP67 

Split core 

Ø 15 mm 

0.25 m wire 

+ connector 

148 PCM 10-P 

10000 ± 10000 O/L ± 15 10 V DC-3 (+/-3dB) 1) 2 -25...+85 

Aperture 

162x42 mm 

Fujicon 71 HAZ 10000-SB 

Fujicon F2023A 

(6 terminals) 

10 ± 20 C/L + 24 

4-20 mA DC 

@ -/+I P 

DC 1 a) -25...+55 

Split core 

Ø 15 mm 

2 m wire 149 PCM 10-P/SP1 

10000 ± 10000 O/L ± 15 20 mA DC-3 (+/-3dB) 1) 2 -25...+85 

Aperture 

162x42 mm 

Fujicon 71 HAZ 10000-SBI 


(6 terminals) 

TTR 

20 ± 40 C/L + 24 

20 + 20 C/L + 24 

20 + 20 C/L + 24 

20 + 20 C/L + 24 

20 ± 40 C/L + 24 

30 ± 60 C/L + 24 

30 + 30 C/L + 24 

4-20 mA DC 

-25...+55 

DC 1 

@ -/+I a) P 

IP67 

4-20 mA DC 

@ +I P 

DC 1 a) -25...+55 

4-20 mA DC 

@ +I P 

DC 1 a) -25...+55 

4-20 mA DC 

@ +I P 

DC 1 a) -25...+55 

4-20 mA DC 

@ -/+I P 

DC 1 a) -25...+55 

4-20 mA DC 

-25...+55 

DC 1 

@ -/+I a) P 

IP67 

4-20 mA DC 

@ +I P 

DC 1 a) -25...+55 

5 ± 25 C/L + 24 4-12 mA DC 

0.04-1 (-3dB) 2 a) -25...+55 

5 ± 25 C/L + 24 4-12 mA DC 

0.04-1 (-3dB) 2 a) -25...+55 

IP67 

10 ± 30 C/L + 24 4-12 mA DC 

0.04-1 (-3dB) 2 a) -25...+55 

4000 ± 4000 O/L ± 15 10 V DC-3 (+/-3dB) 1) 2 -25...+85 

4000 ± 4000 O/L ± 15 20 mA DC-3 (+/-3dB) 1) 2 -25...+85 

4000 ± 4000 O/L ± 15 

4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (+/-3dB) 1) 2 -25...+85 

4000 ± 4000 O/L ± 15 0-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

4000 ± 4000 O/L ± 15 4-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

4000 ± 4000 O/L ± 15 0-10 V DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

6000 ± 6000 O/L ± 15 10 V DC-3 (+/-3dB) 1) 2 -25...+85 

6000 ± 6000 O/L ± 15 20 mA DC-3 (+/-3dB) 1) 2 -25...+85 

6000 ± 6000 O/L ± 15 

4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (+/-3dB) 1) 2 -25...+85 

6000 ± 6000 O/L ± 15 0-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

6000 ± 6000 O/L ± 15 4-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

6000 ± 6000 O/L ± 15 0-10 V DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

Split core 

Ø 15 mm 

Split core 

Ø 15 mm 

Split core 

Ø 15 mm 

Split core 

Ø 15 mm 

Split core 

Ø 15 mm 

Split core 

Ø 15 mm 

Split core 

Ø 15 mm 

Split core 

Ø 15 mm 

Split core 

Ø 15 mm 

Split core 

Ø 15 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

0.25 m wire 

+ connector 

148 PCM 20-P 


0.25 m wire 

+ connector 

2.5 m wire + 

connector 

151 PCM 20-P/SP3 

152 PCM 20-P/SP4 


0.25 m wire 

+ connector 

148 PCM 30-P 


0.25 m wire 

+ connector 

153 PCM 5-PR/SP1 

True 

RMS 

output 

2 m wire 154 PCM 5-PR/SP2 True RMS output 

0.25 m wire 

+ connector 

153 PCM 10-PR/SP1 



Fujicon 71 HAZ 4000-SBI/SP1 

Fujicon 71 HAZ 4000-SRI 

Fujicon 71 HAZ 4000-SRI/SP1 

Fujicon 71 HAZ 4000-SRU 







True 

RMS 

output 


(6 terminals) 


(6 terminals) 


(6 terminals) 



(6 terminals) 



(6 terminals) 



(6 terminals) 


(6 terminals) 


(6 terminals) 


(6 terminals) 



(6 terminals) 



(6 terminals) 



(6 terminals) 

10000 ± 10000 O/L ± 15 4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (+/-3dB) 1) 2 -25...+85 

10000 ± 10000 O/L ± 15 0-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

10000 ± 10000 O/L ± 15 4-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

10000 ± 10000 O/L ± 15 0-10 V DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

12000 ± 12000 O/L ± 15 10 V DC-3 (+/-3dB) 1) 2 -25...+85 

12000 ± 12000 O/L ± 15 20 mA DC-3 (+/-3dB) 1) 2 -25...+85 

12000 ± 12000 O/L ± 15 4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (+/-3dB) 1) 2 -25...+85 

12000 ± 12000 O/L ± 15 0-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

12000 ± 12000 O/L ± 15 4-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

12000 ± 12000 O/L ± 15 0-10 V DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

14000 ± 14000 O/L ± 15 10 V DC-3 (+/-3dB) 1) 2 -25...+85 

14000 ± 14000 O/L ± 15 20 mA DC-3 (+/-3dB) 1) 2 -25...+85 

14000 ± 14000 O/L ± 15 4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (+/-3dB) 1) 2 -25...+85 

14000 ± 14000 O/L ± 15 0-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

14000 ± 14000 O/L ± 15 4-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

14000 ± 14000 O/L ± 15 0-10 V DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

20000 ± 20000 O/L ± 15 10 V DC-3 (+/-3dB) 1) 2 -25...+85 

20000 ± 20000 O/L ± 15 20 mA DC-3 (+/-3dB) 1) 2 -25...+85 

20000 ± 20000 O/L ± 15 4 mA @ -I PN 

20 mA @ +I PN 

DC-3 (+/-3dB) 1) 2 -25...+85 

20000 ± 20000 O/L ± 15 0-20 mA DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

20000 ± 20000 O/L ± 15 4-20 mADC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

20000 ± 20000 O/L ± 15 0-10 V DC 

DC & 0.015…3 

(+/-3 dB) 1) 2 -25...+85 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 

Aperture 

162x42 mm 
























(6 terminals) 



(6 terminals) 



(6 terminals) 



(6 terminals) 


(6 terminals) 


(6 terminals) 


(6 terminals) 



(6 terminals) 



(6 terminals) 



(6 terminals) 


(6 terminals) 


(6 terminals) 


(6 terminals) 



(6 terminals) 



(6 terminals) 



(6 terminals) 


(6 terminals) 


(6 terminals) 


(6 terminals) 



(6 terminals) 



(6 terminals) 



(6 terminals) 

TTR 

148 149 

152 

153 

150 151 71 

154 

Notes: 

a) Exclude electrical offset 


52 


53

V PN = 10 V ... 1500 V TTR - On-Board Closed-loop V PN = 140 V ... 4200 V TTR - On-Board 

IDT 

Fluxgate 

II PN 

(V PN 

) 

mA 

I P 

(V P 

) 

mA 

Technology 

U C 

V 

I out 

@ II PN 

BW 

kHz 

X G 

T A 

= 25 °C 

% @ II PN 

with max 

offset taken 

T A 

°C 

UR or UL 

Packaging No 

Type 

Features 

±V PN 

V 

±V P 

V 

Technology 

U C 

V 

V out 

I out 

@ V PN 

BW 

kHz 

X G 

T A 

= 

25 °C 

% @ V PN 

with max 

offset taken 

T A 

°C 

UR or UL 

Packaging No 

Type 

Connection 

primary 

Connection 

secondary 

10 

(10 to 1500 V) 

± 14 

(2100 V) 

C/L ± 15 25 mA Note c) 0.8 -40...+85 76 

LV 25-P/SP5 

note d) 

Isolation test 

2000 3000 Insulating digital technology ± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 2000 2 x M5 

2000 3000 Insulating digital technology ± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 87 DVL 2000/SP1 M5 

3 x M5 + 

Faston 

Burndy 

vertical 

2000 3000 Insulating digital technology ± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 88 DVL 2000/SP5 cable cable 

V PN = 50 V ... 1500 V 

IDT 

2000 3000 Insulating digital technology ± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 89 DVL 2000/SP6 M5 cable 

2000 3000 Insulating digital technology ± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 81 DV 2000 Cable Cable 

TTR 

±V PN 

V 

±V P 

V 

50 75 

125 188 

150 225 

Technology 


technology 


technology 


technology 

U C 

V 

V out 

I out 

@ V PN 

BW 

kHz 

X G 

T A 

= 

25 °C 

% @ V PN 

with max 

offset taken 

T A 

°C 

UR or UL 

Packaging No 

Type 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 78 DVL 50 2 x M5 3 x M5 + Faston 



Connection 

primary 

Connection 

secondary 

voltage: 4.2 kV RMS 

55 

2000 3000 Insulating digital technology ± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 82 DV 2000/SP1 Cable M5 + Faston 

2000 3000 Insulating digital technology ± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 83 DV 2000/SP2 M5 M5 

2800 4200 Insulating digital technology ± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 90 DV 2800/SP1 M5 vertical 

Burndy 

vertical 



4000 6000 Insulating digital technology ± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 91 DV 4000/SP1 M5 

Burndy 

vertical 

4000 6000 Insulating digital technology ± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 90 DV 4000/SP2 M5 vertical 

Burndy 

vertical 

4200 6000 Insulating digital technology ± 15…24 7 V DC-12 (3dB) 0.3 -40...+85 92 DV 4200/SP1 M5 D-Sub 

TTR 

250 375 

500 750 


technology 


technology 



4200 6000 Insulating digital technology ± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 81 DV 4200/SP3 Cable Cable 


4200 6000 Insulating digital technology ± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 93 DV 4200/SP5 M5 vertical D-Sub 

750 1125 


technology 


140 200 Fluxgate “C” ± 15 

10 V/200 

V 

DC-300 (-1dB) 0.2 @ V P 

-40...+85 80 CV 3-200 2 x M5 4 x M5 

750 1125 


technology 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 86 DVL 750/SP2 M5 M5 insert 

350 500 Fluxgate “C” ± 15 

10 V/500 

V 

DC-300 (-1dB) 0.2 @ V P 

-40...+85 80 CV 3-500 2 x M5 4 x M5 

1000 1500 

1000 1500 

1000 1500 

1000 1500 

1000 1500 


technology 


technology 


technology 


technology 


technology 


± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 87 DVL 1000/SP1 M5 Burndy vertical 


± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 88 DVL 1000/SP7 cable cable 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 89 DVL 1000/SP8 M5 cable 

700 1000 Fluxgate “C” ± 15 

840 1200 Fluxgate “C” ± 15 

1000 1500 Fluxgate “C” ± 15 

1400 2000 Fluxgate “C” ± 15 

10 

V/1000 V 

10 

V/1200 V 

10 

V/1500 V 

10 

V/2000 V 

DC-500 

(-1dB @ 50 

% V PN 

) 

DC-800 

(-1dB @ 40% V PN 

) 

DC-800 

(-1dB @ 33% V PN 

) 

DC-300 

(-1dB @ 25% V PN 

) 

0.2 @ V P 

-40...+85 80 CV 3-1000 2 x M5 4 x M5 

0.2 @ V P 

-40...+85 80 CV 3-1200 2 x M5 4 x M5 

0.2 @ V P 

-40...+85 80 CV 3-1500 2 x M5 4 x M5 

0.2 @ V P 

-40...+85 80 CV 3-2000 2 x M5 4 x M5 

1000 1500 


technology 


78 86 87 88 89 

81 

82 

83 

84 

1200 1800 


technology 


90 

91 

92 

93 

1500 2250 


technology 


1500 2250 


technology 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 87 DVL 1500/SP1 M5 Burndy vertical 

1500 2250 


technology 


1500 2250 

1500 2250 


technology 


technology 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 88 DVL 1500/SP5 cable cable 

± 15…24 50 mA DC-14 (-3dB) 0.5 -40...+85 89 DVL 1500/SP6 M5 cable 

80 

1500 2250 


technology 

± 15…24 50 mA DC-12 (3dB) 0.3 -40...+85 82 DV 1500 Cable M5 + Faston 

Notes: 

c) See response time in the individual data sheet 

d) The primary and secondary connections of this transducer are done on PCB 

76 

54 

Dedicated data sheets are the only recognized reference documents for the given performances and data - Data sheets: www.lem.com


Energy Measurement for 

On-Board Applications: EM4T II 


Picture 1 : 

European rail networks 

TTR 

With the liberalization and/or privatization of some of the major 

rail networks, the opportunity for traction units to cross national 

boundaries now exists, using both the installed base of rail and 

planned rail networks. 

This gave train designers the daunting task to develop multisystem 

locomotives to be used on the different existing 

networks. 

These prime movers would be needed to operate on the 

different supply networks of bordering countries along the route 

without requiring an equipment exchange at the regional or 

network supply border. 

Today, it is therefore technically possible to transfer people or 

goods throughout Europe, from Norway to Sicily for example, 

without any physical exchange of the locomotive (Picture 1). 

Changes in the Energy Markets in the form of deregulation and 

increased competition for large user contracts brought potential 

benefi ts for those willing to negotiate for their electrical traction 

supply requirements. 

This negotiation however requires greater knowledge and 

understanding of the load profi le of bulk supply points in one of 

the harshest electrical environments – the traction supply. 

With the energy meter from LEM, the data for the precise 

calculation of both supplied and regenerated energy for billing 

purposes can be accomplished on the train, independently of 

the energy supplier. 

The second generation of universal energy meters for traction 

especially designed for on-board applications 

With the EM4T II energy meter, LEM introduced the 

second generation of universal energy meters for 

electric traction units with the authorization for billings. 

Thanks to the advanced capability (such as input channels 

to connect any actual available current and voltage 

transducer or transformer) of the EM4T II, it is used both 

in new multi-system locomotives and for retrofitting to 

all types of electrical rail vehicles already in operation. 

Recently, the new EN 50463 standards define characteristics of 

energy measurement function (EMF) as well as transducers for 

current and voltage DC or AC measurement used for EMF. This 

evolution led LEM to upgrade EM4T to the latest model: EM4T II. 

EM4T II - the load profi le provider 

EM4T II processes signals from the transformer and electronic 

converter systems for current and voltage to calculate energy 

values which are stored as load profile information. 

In this load profile (set and stored in intervals of 1, 2, 3, 5, 10 

or 15 minutes period length according to the user), the primary 

energy (delta) values are recorded together with data such as: 

• Date and time stamp 

• Events 

• Train identification numbers 

• Absolute energy values for consumption and 

regeneration of active and reactive energy 

• Frequency of the network (16.7 Hz, 50 Hz, 60 Hz or DC) 

• Additional “user” load profile like the voltage with 

a shorter time interval (feature coming in a second 

design step) 

• Position of the train at the time the load profile was 

stored and/or the event arose 

• Further functions, such as voltage detection can be set. 

The measured energy information includes separately the 

consumed and regenerated active and reactive energy and is 

stored in the load profile memory (at 5 minutes period length) for 

at least 300 days. 

The input variables (current and voltage) are connected to the 

measuring circuits of the EM4T II via differential inputs (Picture 

2 and 3), designed for connection of all current and voltage 

transducers/transformers currently available on the market. 

Four input channels are proposed for metering of both DC and 

AC signals of any existing traction network (see chart 1). 

The EM4T II is suitable for usage in multi-system vehicles. 

Supply systems 25 kV 50/60 Hz and 15 kV 16.7 Hz, or either 

600 V DC, 750 V DC, 1.5 kV DC or 3 kV DC are covered. A 

system change is detected by the energy meter and stored in 

the load profile. 

The requirements for current measurement at this level can be 

diverse. 

A large aperture transducer is appropriate when the primary 

conductor is highly isolated to support the high level of voltage 

(15 to 25 kV AC as nominal level): LEM’s ITC Transducer Series 

is of this category. 

PORTUGAL 

CP 

IRELAND 

IE 

SPAIN 

RENFE 

BR 

UNITED KINGDOM 

FRANCE 

DENMARK 

NETHERLANDS 

SNCF 

NS 

BELGIUM 

SNCB 

SWITZERLAND 

SBB/CFF/FFS 

MONACO 

NORWAY 

NSB 

GERMANY 

DB AG 

FS 

ITALY 

SWEDEN 

SJ 

CD 

AUSTRIA 

OBB 

SLOVENIA 

SZ 

CROATIA 

HZ 

POLAND 

PKP 

ZSR 

LITHUANIA 

SLOVAKIA 

HUNGARY 

MAV 

BOSNIA 

AND HERZEGOVINA 

MONTENEGRO 

FINLAND 

VR 

ZBH JZ 

ESTONIA 

LATVIA 

KOSOVO 

ALBANIA 

EVR 

LDZ 

MACEDONIA 

OSE 

GREECE 

BELARUS 

BZD 

ROMANIA 

SNCFR 

BULGARIA 

BDZ 

UKRAINE 

RUSSIAN FEDERATION 

RZD 

FAP/KHP 

UZ 

EM4T II 

Energy meter for electrical 

traction unit railways 

• Data recording according to EN 50463-x 

• Accuracy 0.5R according to EN 50463-2 

• Multi-System capability for DC, 16.7 Hz, 50 Hz, 60 Hz 

• Supply systems according to EN50163: 25 kV 50 Hz, 

15 kV 16.7 Hz, 600 V DC, 750 VDC, 1.5 kV DC, 3 kV DC 

• Measurement of consumed and regenerated active 

and reactive energy 

• For DC optionally with up to 3 DC current channels 

• Input for GPS receiver 

• Load profile recording including location data 

• RS-type interface for data communication 

• Ethernet-interface (Available in the next version) 

not electrifi ed 

electrifi ed (DC) tracks 

1.5 kV DC 

3 kV DC 

15 kV 16.7 Hz 

25 kV 50 Hz 

3 kV DC / 25 kV 50Hz 

Picture 2: EM4T II 

Siemens Train 

TTR 

EM4T II is a single energy meter complying to all the 

requirements of EN 50463-x & EN 50155 standards for metering 

and On-Board use, and thus satisfies the requirements of EC 

Decision 2011/291/EC (TSI “Locomotives and passenger rolling 

stock”). 

Shunts can also be used at this level associated to LEM DI 

models providing the required insulation and the class 1R 

accuracy (when used with a class 0.2R shunt). 

Version 

AC 

ACDC 

DC 

Channel 1 

AC-voltage 

AC-voltage 

DC-voltage 

Channel 2 

AC-current 

AC-current 

DC-current 

Channel 3 


Channel 4 


DCDC 




DCDCDC 





Chart 1: EM4T II possible confi gurations for inputs 

56 57



TTR 

For the DC networks, the transducer’s inherent isolation 

properties are adequate. 

Analog to Digital Sigma-Delta conversion processors suppress 

high frequency disturbances in all channels, enhancing even 

further the capacity to handle the often rapid supply transitions 

within traction supplies. 

The microprocessor reads the sampled values and calculates 

the real energy in adjustable intervals (standard value = 5 min). 

The results are then saved in flash memory (a special variant of 

an EEPROM). 

The signals from 2 AC and 2 DC input channels (each for U- 

and I- input) are used to calculate the energy values. The highaccuracy 

measurement of the energy value is guaranteed by the 

digitally sampled signal converter implemented, providing the 

highest level of temperature and long-term stability. 

Optionally, the EM4T II for DC measurement is available in a 

version with a single voltage input and up to three current inputs 

to measure the energy consumption for vehicles with multiple 

power supply points. 

The EM4T II has a dedicated RS232 interface input for 

receiving serial GPS-data messages according to NMEA 0183, 

including the location data of the energy consumption point. 

It synchronizes also the internal clock of the meter using the 

obtained time information. 

A log book in full conformity with EN 50463-3 is stored in the 

EM4T II. This log book information contains e.g. loss and gain 

of the operating voltage, power up/power down events of the 

supply voltage, clock synchronization, and the modification of 

parameters influencing the energy calculating. 

Identification data of the vehicle or train are also stored and can 

be retrieved separately. The self-luminous display of the EM4T II 

shows cyclically all relevant energy and status information without 

required operations of a mechanical or optical button. 

All measured and stored data can be read out via the RS-type 

interface (via modem or local). 

The interface versions RS232, RS422 or RS485 are available. 

The applied data communications protocol is IEC 62056-21 

and is therefore easily adaptable by all common remote reading 

systems. In the next version, the EM4T II will also provide an 

Ethernet-interface. 

The supply voltage is selectable between 24 V and 110 

V. Optionally, the EM4T II offers a power supply of 12 V for a 

communication unit (modem). 

The operating conditions (considering EMC, temperature, 

vibration, etc.) meet the special requirements for traction use, 

including EN 50155, EN 50121-3-2, EN 50124-1, and EN 61373. 

The compact and fire-retardant enclosure provides protection 

against the ingress of moisture or foreign objects according IP 

65. 

EM4T II 

DV 4200/SP4 

ITC 4000-S 

ITC 2000-S 

Shunt 

DI 

Part of a high voltage frame of a multi-system locomotive with the positions needed for current & voltage measurement 

TTR 

Battery Supply 

Over- 

Voltage 

Protection 

Supply Buffer 

Internal Supply 

Modem 

(GSM / GPRS / GSM-R) 

RESET 

ISOLATION 

ISOLATION 

ADC ADC ADC ADC 

Sensor 

Channel 

#1 

Local 

Interface 

μ-Processor 

Sensor 

Channel 

#2 

Display 

ISOLATION 

Sensor 

Channel 

#3 

GPS 

Receiver 

ISOLATION 

Sensor 

Channel 

#4 

Transducer Transducer Transducer Transducer 

Picture 3: Block diagram of the LEM energy meter 

MEMORY 

CLOCK 

(Buffer Battery) 

Standards & Regulations 

• EN 50463-x Draft: 

(2012): Railway application 

Energy measurement on board trains 

DC measurement Class 2 

AC measurement Class 1.5 

• EN 50155 Railway applications 

(2007): Electronic equipment used 

on rolling stock 

• EN 50121-3-2 Railway applications 

(2006): Electromagnetic compatibility 

Part 3-2: Rolling stock - Apparatus 

• EN 61373 Railway applications 

(2010): Rolling stock equipment 

Shock and vibration tests 

• EN 50124-1 Railway applications 

(2001): Insulation coordination 

Part 1: Basic requirements 

• IEC 62056-21 Electricity metering 

(2002): Data exchange for meter reading, 

tariff and load control 

Part 21: Direct local data exchange 

DI 30...200 mV 

(Shunt isolator) 

Class 1R 

High galvanic isolation 

DV-VOLTAGE FAMILY 

1200 to 4200 V RMS 

One unique compact package 

Class 0.75R accuracy 

Low thermal drift 

ITC 2000...4000-S FAMILY 

Better than Class 0.5R 

High temperature stability 

58 59

TTR - Selection Guide 

TTR - Selection Guide 

46-47 

45-46-47 

44-45 

130-400 A 

44 

44 

45 

46 

47 

46 

TTR 

46-47 

46-47 

1000-3000 A 

TTR 

52-53 

50 

51 

0.1 

44 

0.4 

52 

54 

55 

140 

54-55 

54-55 

57 

50 

LTC model in circuit breaker. Picture provided by courtesy of Sécheron. 

LF 205 models in auxiliary inverter. Picture provided by courtesy of SMA. 

LV 25-P/SP5 model in auxiliary inverter. 

LAC 300-S/SP1 model in auxiliary inverter. 

60 61

I PN 

= 12.5 A ... 4000 A 

I PN 

I PN 

A DC 

A RMS 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

(DC) 

BW 

kHz 

Note j) 

E L 

Linearity 

(ppm) 

Note i) k) 

I OE 

V OE 

Offset 

(ppm) 

Note k) l) 

HIP 

Noise (RMS) 

(ppm) 

(DC-100Hz) 

Note k) 

Noise 

(RMS) 

(ppm) 

(DC- 

50kHz) 

Note k) 

TCI OE 

TCV OE 

(ppm/K) 

Note k) 

T A 

°C 

PCB 

Mounting 

On-board 

Panel 

Measuring 

head + 

19” rack 

electronic 

Busbar Aperture 

Diameter (mm) 

UR or UL 

Packaging No 

Type 

HIP 

Fluxgate 

Features 

12.5 8.8 ± 12.5 Fluxgate IT ± 15 50 mA DC-500 (3dB) 4 500 0.5 

10 

(DC-100kHz) 

2 10...+45 Integrated 94 ITN 12-P 

Metal housing for 

high immunity against 

external infl uence 

60 42 ± 60 Fluxgate IT ± 15 100 mA DC-800 (3dB) 20 250 1 15 2.5 10...+50 26 95 IT 60-S 

HIP 

Stand-alone DC/AC Current Transducers 

200 141 ± 200 Fluxgate IT ± 15 200 mA DC-500 (3dB) 3 80 1 15 2 10...+50 26 95 IT 200-S 

300 300 ± 450 Fluxgate IT ± 15 150 mA DC-100 (-3dB) 10 666 N/A N/A 6.66 -40...+85 21.5 96 ITB 300-S 

400 282 ± 400 Fluxgate IT ± 15 200 mA DC-500 (3dB) 3 40 0.5 8 1 10...+50 26 95 IT 400-S 

400 400 ± 900 Fluxgate IT ± 15 

266.66 

mA 

DC-200 m) (3dB) 1 10 

0.017 

(0.125Hz-1kHz) 

600 424 ± 600 Fluxgate IT ± 15 400 mA DC-300 (3dB) 1.5 15 0.3 

0.006 

(1kHz-30kHz) 

15 

(DC-100kHz) 

0.3 10...+50 

Integrated 

busbar 

19 mm 

diameter 

97 ITL 900-T 

0.5 10...+50 30 98 ITN 600-S 

700 495 ± 700 Fluxgate IT ± 15 400 mA DC-100 (3dB) 3 50 0.5 6 0.5 10...+50 30 99 IT 700-S 

700 495 ± 700 Fluxgate IT ± 15 400 mA DC-100 (3dB) 3 50 1 16 0.5 10...+50 30 100 IT 700-SPR 

700 495 ± 700 Fluxgate IT ± 15 10 V DC-100 (3dB) 30 60 2 10 4 10...+50 30 99 IT 700-SB 

900 636 ± 900 Fluxgate IT ± 15 600 mA DC-300 (3dB) 1 10 0.2 10 0.3 10...+50 30 99 ITN 900-S 

Programmable from 

80 A in step of 10 A 

1000 707 ± 1000 Fluxgate IT ± 15 1 A DC-500 (3dB) 3 50 N/A 6 0.5 10...+50 30 101 IT 1000-S/SP1 High bandwidth 

4000 4000 ± 12000 Fluxgate IT ± 24 1.6 A DC-50 n) (1dB) 100 62.5 125 (0.1Hz-10kHz) 

125 

(0.1Hz-10kHz) 

1.38 -40...+70 268 74 ITL 4000-S 

HIP 

74 

94 100 99 95 96 98 

101 

97 

Notes: 

i) Linearity measured at DC 

j) Bandwidth is measured under small signal conditions - amplitude of 0.5% I PN 

(DC) 

k) All ppm figures refer to V out 

or I out 

@ I PN 

(DC) except for ITL 900-T where it refers to I OUT 

= 600 mA 

l) Electrical offset current + self magnetization + effect of earth magnetic field @ T A 

= +25 °C 

m) Small signal 5% of I PN 

(DC), 32 A RMS 

n) Small signal 40 A RMS 

o) Bandwidth is measured under small signal conditions - amplitude of 1% I PN 

(DC) 

N/A : Not Available 

62 


63

I PN 

= 40 A ... 24000 A 

HIP 

HIP 

Fluxgate 

I PN 

A DC 

I PN 

A RMS 

I P 

A 

Technology 

U C 

V 

V out 

I out 

@ I PN 

(DC) 

BW 

kHz 

Note j) 

E L 

Linearity 

(ppm) 

Note i) k) 

I OE 

V OE 

Offset 

(ppm) 

Note k) l) 

Noise (RMS) 

(ppm) 

(DC-100Hz) 

Note k) 

Noise (RMS) 

(ppm) 

(DC-50kHz) 

Note k) 

TCI OE 

TCV OE 

(ppm/K) 

Note k) 

T A 

°C 

PCB 

Mounting 

On-board 

Panel 

Measuring 

head + 

19” rack 

electronic 

Busbar Aperture 

Diameter (mm) 

UR or UL 

Packaging No 

Type 

Features 

600 424 ± 600 Fluxgate IT 100-240 VAC - 50/60 Hz 1 A DC-500 o) (3dB) 1 2 11 (DC-10kHz) 28 (DC-100kHz) 0.1 

0...+55 Head 

+10…+40 Elec. 

25.4 102 + 103 ITZ 600-SPR 

Programmable by steps of 

20 A from 40 A to 620 A 

600 424 ± 600 Fluxgate IT 100-240 VAC - 50/60 Hz 10 V DC-300 o) (3dB) 10 3 8 (DC-10kHz) 60 (DC-100kHz) 0.3 

0...+55 Head 

+10…+40 Elec. 

25.4 102 + 103 ITZ 600-SBPR 

Programmable by steps of 

20 A from 40 A to 620 A 

Rack System DC/AC Current Transducers 





5000 3535 ± 5000 Fluxgate IT 100-240 VAC - 50/60 Hz 2 A DC-80 o) (3dB) 3 2 2.5 (DC-10kHz) 20 (DC-100kHz) 0.1 

5000 3535 ± 5000 Fluxgate IT 100-240 VAC - 50/60 Hz 10 V DC-80 o) (3dB) 11 3 2.5 (DC-10kHz) 60 (DC-100kHz) 0.3 




0...+55 Head 

+10…+40 Elec. 

0...+55 Head 

+10…+40 Elec. 

0...+55 Head 

+10…+40 Elec. 

0...+55 Head 

+10…+40 Elec. 

0...+55 Head 

+10…+40 Elec. 

0...+55 Head 

+10…+40 Elec. 

0...+55 Head 

+10…+40 Elec. 

0...+55 Head 

+10…+40 Elec. 

0...+55 Head 

+10…+40 Elec. 

50 102 + 104 IT 2000-S 

50 102 + 104 IT 2000-SB 

50 102 + 104 IT 2000-SPR 

50 102 + 104 IT 2000-SBPR 

140.3 102 + 105 IT 5000-S 

140.3 102 + 105 IT 5000-SB 

100 102 + 106 IT 10000-S 

100 102 + 106 IT 10000-SB 

150.3 102 + 107 IT 16000-S 

Programmable by 

steps of 125 A from 

125 A to 2000 A 

Programmable by 

steps of 125 A from 

125 A to 2000 A 


0...+55 Head 

+10…+40 Elec. 

150.3 102 + 107 IT 16000-SB 

HIP 


0...+55 Head 

+10…+40 Elec. 

150.3 102 + 107 IT 24000-S 

HIP 

107 

105 106 

102 

104 103 

Notes: 

i) Linearity measured at DC 

j) Bandwidth is measured under small signal conditions - amplitude of 0.5% I PN 

(DC) 

k) All ppm figures refer to V out 

or I out 

@ I PN 

(DC) except for ITL 900-T where it refers to I OUT 

= 600 mA 

l) Electrical offset current + self magnetization + effect of earth magnetic field @ T A 

= +25 °C 

m) Small signal 5% of I PN 

(DC), 32 A RMS 

n) Small signal 40 A RMS 

o) Bandwidth is measured under small signal conditions - amplitude of 1% I PN 

(DC) 


65

AUTOMOTIVE 

Automotive Applications Overview 

In the automotive market, LEM works with all the major car 

manufacturers and Tier-1 suppliers in the world, and supplies 

galvanically-isolated electronic transducers that measure electrical 

parameters in battery-management and motor-control applications. 

The ever more stringent requirements for energy efficiency and 

3 

reduced CO2 emissions lead car manufacturers to increasingly 

depend on on-board electrical components. From electric powersteering 

and stop-start technologies to on-board navigation and 

infotainment systems, these components put an additional load on 

the electrical circuits and particularly the battery, making it essential 

to control the energy generated and consumed by the various onboard 

systems. In collaboration with its customers and with the help 

of powerful simulation techniques, LEM uses the most-appropriate 

technology (from Hall-cell to fluxgate) to address the specific need 

HC2F model in inverter. 

C 

of measuring the currents (coulombs) entering and leaving the car’s 

battery and/or the alternator. This allows an intelligent management 

1 

of available power that leads to the increased efficiency of today’s 

D 

AUTOMOTIVE 

internal-combustion engines. More importantly still, the hybrid- and 

electric-vehicles entering the market today depend on accurate 

measurement of battery-pack currents to determine the available 

driving range and recharging strategy. LEM has the technology. 

Not only must battery currents be accurately measured in hybrid- and 

electric-vehicles, but the electric motors driving the wheels of this 

new generation of automobiles also need to be precisely controlled 

to allow smooth operation. Electric motor phase-current sensing has 

been LEM’s core competency since its beginning and remains today 

A 

A 

4 

3 

5 

A 

6 

7 

2 

B 

a major application for its technology. LEM has a dedicated product 

range for measuring phase-currents in motors and DC-DC converters 

essential to all hybrid- and electric-vehicles. 

LEM is a key player in the new generation of automobiles, using 

its know-how acquired over 40 years to develop the specific 

technologies to measure battery and motor-phase currents that allow 

the car industry to meet the ever increasing requirements in energy 

efficiency. The following pages give you an introduction into LEM’s 

technology for automotive applications. 

1 

2 

3 

4 

5 

6 

7 

High-voltage battery 

Vehicle control unit 

Charger 

Motor controller 

Electric motor and transaxle 

DC/DC converter 

Electric power steering 

A 

B 

C 

D 

HAH1DR - HAH3 - HC2 - HC5 - HC6 - CKSR 

DHAB - HAH1BV - CAB 

CDT 

FHS (dashboard) 

AUTOMOTIVE 

66 

67

Automotive Selection Guide 

Automotive Selection Guide 

PRODUCT NAME 

HAB 

MAXIMUM PEAK 

MEASUREMENT 

RANGE (A) 

± 400 

OUTPUT 

SIGNAL 

V / PWM 

TYPICAL 

ACCURACY 

±2% 

APPLICATION 

Electric load 

(wipers, lights, etc,...) 

Alternator 

Monitoring 

= Current transducer 

HABT 

HAG 

DHAB 

CAB 

± 100 

± 300 

± 1000 

± 400 

V 

V / PWM 

V 

CAN / LIN* 

±2% 

±2% 

±2% 

±0.1% 

with temperature sensing 

Battery 

Monitoring 

Battery 

Current signal 

Temperature 

Current signal 

Command 

Engine 

ECU 

Alternator 

Battery Monitoring 

HAH1 BV 

± 900 

V 

±2% 

HAH1 DR 

HC2F/HC2H 

HC6F/HC6H 

HC5FW 

± 900 

± 250 

± 800 

± 900 

V 

V 

V 

V 

±2% 

±3% 

±3% 

±1% 

Motor 

Control 

AC 

Compressor 

Internal Combustion 

Engine 

Generator 

MG1 

Gearbox 

DC/DC 

Converter 

DC/DC 

MG2 

Power 

Battery 

Electric 

Traction 

Engine 

ECU 

Fast charger 


Motor Control 

AUTOMOTIVE 

HC20 

± 2000 

V ±2% 

HAH3 

± 900 

V ±1% 

HAM 

± 250 

V ±1% 

CKSR ± 75** 

V ±1% 

FHS40-P 

± 100 

V ±5% 

CDT 0.1 A V ±1mA 

*** 

3 phase 

measurement 

very high 

frequency 

bandwidth 

Threshold 

Detection 

Battery 

Fuse Box (smart fuse) / Junction Box 

CDT 


Charger Battery Inverter M 

mA 

Leakage Current 

Current Detection 

AUTOMOTIVE 

- Operating temperature for all products: -40°C to 125°C 

- Supply Voltage for all products: 5V, Ratiometric 

* Supply Voltage: 12V 

** Operating temperature: -40°C to 105°C 

68 - Customization of standard products possible. Contact us. *** Guaranteed error for leakage current detection 

69 

Battery 

Monitoring 

Alternator 

Monitoring 

DC/DC 

Converter 

Inverter 

Drive 

Motor 

Control 

Charger 

Threshold 

Detection 

Leakage 

Current

LEM’s Quality & Standards 


QUALITY 

LEM is dedicated to deliver products meeting the highest 

quality standards. 

These levels of quality may differ according to the application 

as well as the necessary standards to comply with. 

This quality has to be reached, maintained and constantly 

improved for both our products and services. The different 

LEM design and production centers around the world are 

ISO/TS 16949, ISO 9001 and/or ISO 14001 certified. 

LEM ISO/TS 16949: 2009 

SWITZERLAND ISO 14001: 2004 

ISO 9001: 2008 

IRIS: 2009 

LEM electronics ISO 9001: 2008 

(CHINA) Co, Ltd ISO/TS 16949: 2009 

ISO 14001: 2004 

IRIS: 2009 

LEM Japan ISO 9001: 2008 

ISO 14001: 2004 

TVELEM ISO 9001: 2008 

(RUSSIA) 

Several quality tools have been implemented at LEM to 

assess and analyze its performances. LEM utilizes this 

information to take the necessary corrective actions to remain 

a responsive player in the market. 

The most representative are: 

• DPT FMEA (Design, Process & Tool Failure Mode Effect 

Analysis) tool used preventively to: 

o identify the risks and the root causes related to the 

product, the process or the machinery 

o set up the corrective actions 

• Control Plan: Description of checks and monitoring actions 

executed along the production process 

• Cpk – R&R (Capability for Processes & Measurement 

Systems): 

o Cpk: Statistical tool used to evaluate the ability of a 

production procedure to maintain the accuracy within 

a specified tolerance 

o R&R: Repeatability and Reproducibility: Tool to monitor 

the accuracy of a measurement device within a predetermined 

tolerance 

• QOS – 8D (Quality Operating System – Eight Disciplines): 

o 8D: Problem solving process used to identify and 

eliminate the recurrence of quality issues 

o QOS: System used to solve problems 

• IPQ (Interactive Purchase Questionnaire): Tool aimed at 

involving the supplier in the quality of the purchased parts 

and spare parts. 

In addition to these quality programs, and since 2002, 

LEM embraces Six Sigma as its methodology in pursuit 

of business excellence. The main goal is to create an 

environment in which anything less than Six Sigma quality is 

unacceptable. 

Key Six Sigma Statistics 

Company 

Status 

Non 

Competitive 

Industry 

Average 

World Class 

Sigma 

Level 

2 

3 

4 

5 

6 

Defect 

Free 

65% 

93% 

99.4% 

99.976% 

99.9997% 

Source: Six Sigma Academy, Cambridge Management Consulting 

Defects Per 

Million 

308,537 

66,807 

6,210 

233 

3.4 

LEM’s Standards 

LEM transducers for Industry and traction are designed and 

tested according to recognized worldwide standards. 

CE marking is a guarantee that the product 

complies with the European EMC directive 

2004/108/EEC and low voltage directive and 

therefore warrants the electromagnetic compatibility of the 

transducers. Traction transducers comply to the EN 50121-3- 

2 standard (Railway EMC standard). 

UL is used as a reference to define the flammability 

of the materials used for LEM products (UL94V0) 

as well as the NFF 16101 and 16102 standards fot 

the fire/smoke materials classification when transducers 

dedicated for traction applications. 

LEM is currently UL recognized for key products. You can 

consult the UL website to get the updated list of recognized 

models at www.UL.com. 

The EN 50178 standard dedicated to “Electronic Equipment 

for use in power installations” in industrial applications is 

our standard of reference for electrical, environmental and 

mechanical parameters. 

It guarantees the overall performances of our products in 

industrial environments. 

All of the LEM Industry products are designed according 

to the EN 50178 standard except if dedicated to railway 

applications. 

In that case, the EN 50155 standard dedicated to “Electronic 

Equipment used on Rolling stock” in railway applications is 

our standard of reference for electrical, environmental and 

mechanical parameters. 

It guarantees then the overall performances of our products in 

railway environments. 

All of the LEM traction products are designed according to 

the EN 50155 standard. 

The individual data sheets precisely specify the applicable 

standards, approvals and recognitions for individual products. 

The EN 50178 standard is also used as reference to design 

the creepage and clearance distances for the transducers 

versus the needed insulation levels (rated insulation voltage) 

and the conditions of use. 

The rated insulation voltage level for transducers in 

“industrial” applications, is defined according to several 

criteria listed under the EN 50178 standard and IEC 61010-1 

standard (“Safety requirements for electrical equipment for 

measurement, control and laboratory use”). Some criteria are 

dependent on the transducer itself when the others are linked 

to the application. 

These criteria are the following: 

• Clearance distance (the shortest distance in air between 

two conductive parts) 

• Creepage distance (the shortest distance along the surface 

of the insulating material between two conductive parts) 

• Pollution degree (application specific - this is a way to 

classify the micro-environmental conditions having effect 

on the insulation) 

• Over-voltage category (application specific - characterizes 

the exposure of the equipment to over-voltages) 

• Comparative Tracking Index (CTI linked to the kind of 

material used for the insulated material) leading to a 

classification over different Insulating Material groups 

• Simple (Basic) or Reinforced isolation need 

LEM follows this thought process for all the transducer 

designs: 

Example: LTSP 25-NP, current transducer in a motor drive. 

Conditions of use: 

Creepage distance (on case): 12.3 mm 

Clearance distance (on PCB, footprint as above figure as an 

example): 6.2 mm 

CTI: 175 V (group IIIa) 

Over-voltage category: III 

Pollution Degree: 2 

Basic or Single insulation 

According to EN 50178 and IEC 61010-1 standards: 

With clearance distance of 6.2 mm and PD2 and OV III, the 

rated insulation voltage is of 600 V RMS 

. 

With a creepage distance of 12.3 mm and PD2 and CTI of 175 

V (group IIIa), this leads to a possible rated insulation voltage 

of 1000 V RMS 

. 

In conclusion, the possible rated insulation voltage, in these 

conditions of use, is 600 V RMS 

(the lowest value given by the 

both results from the creepage and clearance distances). 

Reinforced insulation 

Let’s look at the reinforced insulation for the same creepage 

and clearance distances as previously defined: 

When looking at dimensioning reinforced insulation, from the 

clearance distance point of view, with OV III and according 

to EN 50178 and IEC 61010-1 standards, the rated insulation 

voltage is given whatever the pollution degree at 300 V RMS 

. 

From the creepage distance point of view, when dimensioning 

reinforced insulation, the creepage distance taken into 

account has to be the real creepage distance divided by 2, 

that is to say 12.3 / 2 = 6.15 mm. 

With that value, and PD2 and CTI of 175 V (group IIIa), this 

leads to a possible rated insulation voltage of 500 V . RMS 

In conclusion, the possible reinforced rated insulation voltage, 

in these conditions of use, is of 300 V RMS 

(the lowest value 

given by the both results from the creepage and clearance 

distances). 

For railway applications, the EN 50124-1 

(“Basic requirements - Clearances and creepage distances 

for all electrical and electronic equipment”) standard is used 

as reference to design the creepage and clearance distances 

for the transducers versus the needed insulation levels (rated 

insulation voltage) and the conditions of use. 

The rated insulation voltage level allowed by a transducer 

intended to be used in an application classified as being 

“Railway”, is defined according to several criteria listed under 

the EN 50124-1 standard. 

These criteria are the same as per the EN 50178 (seen 

previously) and are the following: 

- Clearance distance, 

- Creepage distance, 

- Pollution degree, 

- Over-voltage category, 

- Comparative Tracking Index (CTI), 

- Simple (Basic) or Reinforced isolation need. 

LEM follows this thought process for the railway transducer 

designs: 

Example: LTC 600-S, current transducer in an propulsion 

inverter 

Conditions of use: 

Creepage distance: 66.70 mm, 

Clearance distance: 45.90 mm, 

CTI: 600 V (group I), 

Over-voltage category: II, 

Pollution Degree: 3. 

QUALITY 

70 

71



Basic or Single insulation: 

According to EN 50124-1 standard: With clearance distance 

of 45.90 mm and PD3, U Ni 

(Rated impulse voltage) = 30 kV. 

With U Ni 

= 30 kV & OV II, the rated insulation voltage (AC or 

DC) called “U Nm 

” can be from >= 6.5 up to < 8.3 kV. 

With a creepage distance of 66.70 mm and PD3 and CTI of 

600 V (group I), it is allowed to have 12.5 mm/kV, leading to a 

possible rated insulation voltage U Nm 

of 5.336 kV. 

In conclusion, the possible rated insulation voltage, U Nm 

, 

in these conditions of use, is of 5.336 kV (the lowest value 

given by the both results from the creepage and clearance 

distances). 

Reinforced insulation: 

Let’s look for the reinforced insulation for the same creepage 

and clearance distances as previously defined: 

When dimensioning reinforced insulation, from the clearance 

distance point of view, the rated impulse voltage, U Ni 

, shall 

be 160% of the rated impulse voltage required for basic 

insulation. 

The clearance distance of 45.90 mm is already designed and 

then, we look for the reinforced insulation with this distance. 

Reinforced U Ni 

= 30 kV obtained with the clearance distance 

of 45.90 mm. 

Basic U Ni 

= Reinforced U Ni 

/ 1.6 = 18.75 kV. 

Reinforced U Nm 

: From >= 3.7 up to < 4.8 kV, according to the 

clearance distance. 

From the creepage distance point of view, when dimensioning 

reinforced insulation, the rated insulation voltage U Nm 

shall be 

two times the rated insulation voltage required for the basic 

insulation. 

With a creepage distance of 66.70 mm and PD3 and CTI of 

600 V (group I), it is then allowed to have 25 mm/kV (2 x 12.5) 

vs. 12.5 mm/kV previously (for basic insulation), leading to a 

possible reinforced rated insulation voltage U Nm 

of 2.668 kV. 

In conclusion, the possible reinforced rated insulation 

voltage U Nm, 

in these conditions of use, is of 2.668 kV (the 

lowest value given by the both results from the creepage and 

clearance distances). 

According to RoHS 2 directive 2011/65/EU 

HAS model in converter. 

QUALITY 

QUALITY 

HAX model in windmills inverter. Picture provided by courtesy of Infi neon. 

72 

73

VARIOUS OPTIONS FOR SECONDARY CONNECTIONS 

Molex 6410/A 

Series connector 

JST VH Series 

Connector 

Molex Mini-Fit, Jr 5566 

Series Connector 

LEM GROUP DESIGN SPECIFICATION 

LEM Subsidiary: Contact: Date: 

Customer information 

e-mail: 

Company : City : Country : 

Contact person : Phone : Fax : 

Project name : 

SECONDARY CONNECTIONS OPTIONS 

Threaded Studs, M4, M5, UNC... 

M4, M5 inserts 

AMP Connectors 

Molex 70543 

Series Connector 

...or Faston 6.30 x 0.80 or 

screws... 

...or the both, in the same time 

Burndy Connectors 

Sub-D Connectors 

Cables, Shielded Cables... 

LEMO Connectors 

But also Wago, Phoenix, Souriau ... connectors 

Application 

Market Drives UPS, REU Traction High precision Energy solutions Automotive 

Utilization voltage current power other: _____ 

Function control differential m. ground fault detection other: _____ 

Electrical & Environmental characteristics Transducer reference (if relevant): 

Signal to measure 

Static and intrinsic values 

Global accuracy (% of nominal value, @ 25 °C) 

Type of signal: AC sin. DC 

_____ % 

square pulse 

other (specify) 

Overall accuracy over operating temperature range 

bidirectional unidirectional 

_____ % 

Nominal value: _____ rms Maximum offset @ 25 °C: 

_____ mA/mV 

Measuring range: _____ pk Dielectric strength: 

(please provide a graph) 

OV category: Pollution degree: 

Overload value to be measured _____ rms 

Peak: _____ pk 

Rated Insulation Voltage: 

Duration: _____ s 

Single insulation: 

_____ V 

Reinforced insulation: _____ V 

Non measured overload: _____ pk 

Primary/secondary (50 Hz/ 1 mn): _____ kV rms 

(to withstand) Frequency: _____ Hz Screen/secondary: 

_____ kV rms 

duration: _____ ms 

Impulse withstand voltage 

_____ kV rms 

di/dt to be followed: _____ A/µs 

Bandwidth: 

_____ kHz Partial discharge level @ 10 pC: _____ kV 

Operating frequency: _____ Hz Preferred output: _____ mA/A mV/A 

Ripple: _____ pk-pk 

_____ mA/V mV/V 

Ripple frequency: _____ Hz other (specify) _____ 

dv/dt applied on primary circuit: _____ kV/µs 

Measuring resistance _____ fi min max 

Turn ratio: 

_____ 

Power supply: _____ V ± _____ % 

bipolar unipolar Temperature range 

Operating: _____ °C to _____ °C 

Storage: _____ °C to _____ °C 

Mechanical requirements 

Maximum dimensions required: L _____ mm x W _____ mm x H _____ mm 

Mounting on: PCB Panel 

Output terminals: PCB Faston Threaded studs M Cable 

other: 

Primary connection: through hole: L _____ mm x W _____mm; or _____ mm 

busbar L _____ mm x W _____mm x H _____ mm 

other: _____ For the bus bar, please provide layout 

Applicable standards: industrial EN 50178 IEC 61800-5-1 IEC 62109-1 

traction EN 50155 EN 50463 

IEC 61010-1 other 

UL Certified UL508/UL60947 Other UL standard (if different than UL508) 

DESIGN SPECIFICATION FORM 

74 

75

Selection parameters 

Selection Parameters 

SELECTION PARAMETERS 

LEM provides the technical solution for current and voltage 

measurements from a wide range of possibilities for various 

parameters, not only electrical but also mechanical. 

1. Mechanical features: 

• A wide range of transducers to be through hole PCB 

mounted, surface mounted or panel mounted with an 

aperture or an integrated primary conductor or both. 

• Multiple mounting possibilities 

Models such as the LF series offer several horizontal 

or vertical mounting possibilities, in very compact 

packages, allowing the user to select the most 

appropriate transducer mounting configuration for the 

application. 

• Various shapes and sizes 

LEM’s ASICs (Application Specific Integrated Circuit) 

used in LEM transducers have been a great contributor 

towards the miniaturization of the transducers volumes 

thanks to the integration of the complete electronics onto 

a unique chip. 

Various mechanical designs are proposed for various 

series covering even the same current ranges to answer 

to different mounting constraints in applications. 

Need to mount a current transducer without 

disconnecting the primary conductor in an existing 

application? This is a job for the HTR or HOP devices 

in industrial applications or PCM models in trackside 

applications. Indeed, they are able to be opened and to 

be clamped onto the primary conductor. They’re perfect 

for retrofit applications without disconnection. 

2. Electrical features: 

• Accuracy 

Accuracy is a fundamental parameter in electrical 

systems. Selecting the right transducer is often a tradeoff 

between several parameters: accuracy, frequency 

response, weight, size, costs, etc. 

The measuring accuracy for LEM transducers depends 

primarily on the operating principle. 

Open Loop transducers are calibrated during the 

manufacturing process and typically provide accuracy 

better than 2 % of the nominal range at 25 °C. For 

additional offset and gain drift parameters, please refer 

to corresponding datasheets. 

New ASIC based Open Loop transducers are being 

developed to provide improvement in gain and offset drift 

over traditional Open Loop transducers but also to reach 

an accuracy performance closer to Closed Loop models. 

Closed Loop current and voltage transducers provide 

excellent accuracy at 25 °C, in general below 1% of the 

nominal range, and a reduced error over the specified 

temperature range, thanks to their balanced flux 

operation. 

Fluxgate based transducers are high performance 

transducers with exceptional accuracy levels over their 

operating temperature range. 

• Supply voltage and consumption 

Most of the transducers are working for bipolar 

measurements using a bipolar supply voltage. 

U C 

= + / - 12 V ; + / - 15 V ; +/- 24 V ; ... 

However, due to power electronics evolution, and thanks 

to ASIC emergence, a large range of transducers are 

designed for bipolar measurements with a single unipolar 

power supply with respect to ground (0 V) : U C 

= + 5 V or 

+ 3.3 V. 

This is a great factor of low power consumption. 

Power consumption is linked to the kind of technology 

used for the transducer. For instance, the following 

typical currents are consumed versus the technologies 

used (this is an important parameter to take into account 

at the design phase): 

Current consumption I c (mA) 

700 

350 

240 

220 

200 

180 

160 

140 

120 

100 

80 

60 

40 

20 

0 

Secondary current 

DV, DI, DVL 

Open Loop 

Compensation current 

Closed Loop 

Fluxgate C Type 

Fluxgate IT Type 



Fluxgate CAS Type 

Fluxgate CTSR Type 

Fluxgate ITC Type 

PRiME 

Technology 

• Reference access 

Models powered with + 5 V or + 3.3 V, mostly using an 

ASIC, can provide their internal voltage reference on 

an external pin or receive an external voltage reference 

to share it with microcontrollers or A/D converters for 

perfect communication. 

Performances such as offset, gain and offset drifts can 

be improved by communicating with the microcontroller 

directly. Some special ASICs have been designed by 

LEM to answer to that specific market requirement. 

Indeed ASICs’ technology allows some specific functions 

and improved performances such as better offset and 

gain drifts. 

• Frequency response 

The frequency response of a transducer is also primarily 

linked to the embedded technology. 

Some key factors affecting the bandwidth performance, 

for the different technologies that LEM offers, are for 

example: 

• Open Loop: Core geometry, number and 

thickness of the laminations, type of core 

material and Hall effect chip, etc directly impact 

the bandwidth. However use of the latest 

generation of ASICs has substantially improved 

that performance. 

• Closed Loop, Fluxgate types: Coupling 

between primary and secondary (depending on 

the mechanical and magnetic circuit designs) 

and the core material have a large influence on 

the bandwidth. 

• For the DV, DI, DVL-Type and PRiME 

technologies, it is a question of electronic 

limitation of the device output. 

• For Closed Loop Hall effect voltage 

transducers, bandwidth is limited due to 

the primary inductance. Please refer to the 

response time in the individual data sheets. 

Bandwidth (kHz) 

800 

700 

600 

500 

400 

300 

200 

100 

… 

50 

40 

30 

20 

10 

DC 

10 Hz to 400 Hz 

Current transformer 

Rogowski 

Technology 

• Operating Temperature Range 

The operating temperature range is based on the 

materials, the construction of the selected transducer, 

and the technology used. The minimum temperatures are 

typically – 40, - 25, or – 10° C while the maximums are + 

50, + 70, + 85, or + 105° C. 

LEM offers a comprehensive range of transducers 

optimized for industrial operating environments. 

14 

10 Hz to 6 kHz 

9.5 

82 

Open Loop 

O/L ASIC 

Fluxgate IT Type 

Closed Loop 

Fluxgate C Type 

DV, DI, DVL 

PRiME 

Fluxgate CAS Type 

Fluxgate CTSR Type 

Fluxgate ITC Type 

The transducers included in this catalogue have various 

temperature specifications related to their global 

accuracy over a specific operating temperature range. 

LEM can also provide transducers with operating 

temperature ranges outside the listed selection to fulfill a 

specific requirement. 

• Output signal 

LEM transducers are available with different output 

signals, mainly depending on the operation principle and 

the application. 

Closed Loop, fluxgate IT & ITC, DV & DVL & DI, current 

transformer type transducers generally provide a current 

output, proportional to the primary signal. The user can 

obtain a voltage signal by defining a burden resistor 

within the limits specified in the datasheet. 

Open Loop, fluxgate C & CAS & CTSR types, PRiME 

transducers directly provide an amplified voltage signal 

proportional to the primary current. 

In the case of single supply voltage, the output signal 

varies around a nonzero reference. 

Some transducers series offer (regardless of the 

technology) specific output signals, adapted to the kind 

applications (trackside, process automation…), such as : 

• Standard output signals (e.g. 0-5 VDC, 0-10 

VDC or 4-20 mA) 

• But also, RMS or T-RMS (“True Root Mean 

Square”) calculation to accurately measure 

current magnitudes, even on non-linear loads 

or in noisy environments. 

• Voltage measurement 

LEM provides a wide selection of solutions for 

Galvanically isolated voltage measurement, at various 

levels of performance. 

There are two different options for voltage measurement: 

• User specified primary resistor: 

The user connects a primary resistor in series 

with the transducer. The value of the primary 

resistor R 1 

is selected according to the 

voltage to be measured. This approach allows 

for maximum flexibility. 

• Integrated primary resistor: The integrated 

primary resistor R 1 

predefines the nominal 

measuring voltage of the transducer. 

LEM offers a wide selection of nominal voltage levels to cover 

a variety of applications. 

SELECTION PARAMETERS 

76 

77

Dimension Drawings 


All dimensions are in mm • Hall effect chip location All dimensions are in mm • 

LA 25-NP/SP7/SP8/SP9/ 

1 SP11/SP13/SP14/SP34/SP38/SP39 2 

CTSR 0.3-P, 

LTSR 6-NP, 

CAS 6-NP, CAS 15-NP, 

CTSR 0.6-P, CTSR 1-P 3 CTSR 0.3-P/SP1 

10 

LTSR 15-NP, LTSR 25-NP 

11 

CAS 25-NP, CAS 50-NP 

12 

Hall effect chip location 

CASR 6-NP, CASR 15-NP, 

CASR 25-NP, CASR 50-NP 

• 

CTSR 0.3-P/SP10 

CTSR 0.3-TP/SP4 

HO 25-NPPR, HO 25-NPPR/SP33 

HO 25-NSMPR, HO 25-NSMPR/SP33 

4 CTSR 0.6-P/SP10 5 CTSR 0.3-P/SP11 6 


13 

14 

15 HXN 03…50-P 

HO 8/15/25-NP-0000, HO 8/15/25-NP/SP33-1000 

HO 8/15/25-NSM-0000, HO 8/15/25-NSM/SP33-1000 

HXN 03 .. 30-P HXN 50-P 

• 

• 

HXN 03-P 05-P 10-P 15-P 

d 0.6 0.8 1.1 1.4 

HXN 20-P 25-P 30-P 50-P 

d 1.6 1.6 1.6 1.2 X 6.3 

1 : - 15 V 

2 : 0 V 

3 : + 15 V 

4 : Output 

5 : Primary input Current (+) 

6 : Primary input Current (-) 

7 



8 

CKSR 6-NP, CKSR 15-NP, 

CKSR 25-NP, CKSR 50-NP 

9 

LTS 6-NP, 

LTS 15-NP, LTS 25-NP 

16 HXD 03…25-P 

17 LA 25-NP, LA 35-NP 18 LAH 25-NP 

DRAWINGS 

Primary pins 

Secondary pins 

5-0.5x0.25 

6 

• 

78 

79 

DRAWINGS



All dimensions are in mm • Hall effect chip location All dimensions are in mm • Hall effect chip location 

19 LTSP 25-NP 

20 

HLSR 10/20/32/40/50-P 

HLSR 10/20/32/40/50-P/SP33 

21 

HLSR 10/20/32/40/50-SM 

HLSR 10/20/32/40/50-SM/SP33 

28 

HAL 50...600-S 

29 

HAS 50...600-S 

30 

HAS 50...600-P 

• 

• 

Secondary terminals 

Terminal 1 : supply voltage +15V 

Terminal 2 : supply voltage -15V 

Terminal 3 : output 

Terminal 4 : 0V 

22 LA 25-NP/SP25 23 HTT 25...150-P 24 

LA 100-P, LA 100-P/SP13 

LA 55-P, LA 55-P/SP1, LA 55-P/SP23 

31 

HTB 50...400-P 

32 HTB 50...100-TP 

33 HTB 50...400-P/SP5 

Front view 

Top view 

I P 

Left view 

• 

• 

• 

34 

1.5 

4-0.635x0.635 

3-0.635x0.635 

3 21 

24.5 

39 

• 

d16 

3.5 19.5 

Positive Current Flow 

14 MAX. 

9 +/-1 

Secondary connection 

6 +/-1 

2-P=2.5 

5.5 

2-d2 

Mounting Pins 

+ : Supply voltage + 15 V 

- : Supply voltage - 15 V 

0 : Supply voltage GND 

V 1 : measure 1 



10 19 

Secondary Pin Identification 

3 

3 

7 

11 

1 +Vc 

2 0V 

3 Output 

25 

LA 100-TP, LA 55-TP, 

LA 55-TP/SP1, LA 55-TP/SP27 

26 HTR 50...500-SB 27 

LAH 50-P, LAH 100-P 

34 

HTB 50...100-TP/SP5 

35 HASS 50...600-S 36 LTT 88-S 

39 

14 MAX. 

34 

1.5 

4-0.635x0.635 

3-0.635x0.635 

• 

321 

10 

1.5 

1.5 

17 

3.5 

3.5 

1.5 


• • • 

DRAWINGS 

Secondary terminals 

Terminal 1 : Supply voltage + 12 .. 15 V 

Terminal 2 : Supply voltage - 12 .. 15 V 

Terminal 3 : Output 

Terminal 4 : 0V 

• 

80 81 

14 

2 

2-P=2.5 10.5 3 3 

9 

3.25 

Secondary Pin Identification 

1 +Vc 

2 0V 

3 Output 

6-1.5x1.5 

3 

3 

11 

• 

DRAWINGS

9 

1 

65 

12 

20 

8 

5 

4 

29 

30 

10 

20 




37 HAC 100...800-S 

38 HTA 100...1000-S 

39 HOP 200...600-SB 

46 LF 205-P/SP1 

47 

LA 200-P, LA 200-P/SP4 

LA 125-P, LA 125-P/SP1/SP4 

48 LA 125-P/SP3 

20 d 4.5 

Molex 5045-04AG 

4 3 2 1 

10 

7.5 

18 

28 

42 

24 

x 

• 

• 

• 

23 

4.5 20 d 2.5 

58 

x 

21 

16 

34 

0M-+ 

GIN OFS 

x 

up to HAC 300-S 

from HAC 400-S 

40 HTFS 200...800-P/SP2 

41 HTFS 200...800-P 

42 HAT 200...1500-S 

49 

LAH 125-P 

50 

LA 130-P 

LA 130-P/SP1 

51 

LA 150-P 

LA 150-P/SP1 

70 

37 

33 

R3 

Ip 

0.5 

16.5 

3 

40 

d6 

d5 

Ip 

0.5 

16.5 

1 

4-d3.5 

40 

33 

1.5 

30.5 

40.5 

1.5 

2.1 

24 

20.3 

20 

4 1 

4-d=1.0 

4 

1 

4-0.25x0.5 

33 

3-P =2.54 16 

5 

3.5+/-1 

d22 

7 

4.5 

26 

4 

1 

4-0.25x0.5 

16 

3-P=2.54 

5 

3.5+/-1 

d22 

7 

4.5 

33 

26 

25 

5.8 

90 

9.5 

9.3 

3 

Current Direction 

Pins Arrangement 

1 2 3 4 

+ - O UT GND 

• 

Terminal P in 

1...+5V 

2...0V 

3...Output 

4...Vref(IN/OUT) 

Terminal Pin 

1...+5V 

2...0V 

3...Output 

4...Vref 

4.50 

4.50 

6 

12 

6 78 1 

43 

LF 205-S 

LF 205-S/SP3 

44 

LF 205-S/SP1 

LF 205-S/SP5 

45 LF 205-P 

52 LA 150-TP 

53 

LAF 200-S 

54 

LF 305-S 

• • 

• 

• 

DRAWINGS 

82 83 

DRAWINGS

4 

4 3 2 1 

6 5 4 3 2 1 

T.P GND OUTPUT 0V -Vc +Vc 

Ofs 

Gin 




55 

LF 305-S/SP10 

56 

LA 306-S 

57 

LT 305-S 

64 

RT 2000 

65 RT 2000/SP1 66 

LF 1005-S 

• 

58 

LF 505-S 

59 

LF 505-S/SP15 

HOP 500-SB/SP1 

60 HOP 800…2000-SB 

67 LF 1005-S/SP22 68 HOP 2000-SB/SP1 69 

LF 2005-S 

1 - 4 

165 

5 

• 

• 

Window 104 x 40 

• 

4- 3.30 

29.5 0.5 

45.5 0.5 29.5 0.5 

50 

96 

53.3 

2-M 4 

15 0.5 

5.5 

5.5 

37 

211 1 

221 1 

25 0.5 

235 1 

61 HAX 500…2500 - S 

62 

RT 500 

63 

RT 500/SP1 

70 HAXC 2000-S 

71 

HAZ 4000...20000-SB,-SBI, 

-SBI/SP1, -SRU, -SRI, -SRI/SP1 

72 

LT 4000-S 

LT 4000-S/SP34 

HAX 500 t o 2500 -S 

Dimensions (in mm) 

56 

18.5 18.5 

11 11 

d 5.5 

FUJICON F2023A 

6 

1 

DRAWINGS 

4 17 

21 12 

1 1 

Fixation by base-plate or on bus bar 

with M5 screws 


108 

64 

126 

144 

10 

4 

1 

MOLEX Connector 

5045-04A 

Pins arrangement: 

1 2 3 4 

(+) (-) Output 0V 

45° 

18 

25 

62 

46 

Max 5 

d 5.5 

84 85 

PINS ARRANGEMENT 

1. +15V 

2. –15V 

3. OUTPUT 

4. 0V (GND) 

All holes = ø 6 mm 

50 160 +/-1.5 

50 

48 

75 

65 

48 

35 

7.5 

125 

+ 

x 

x 

HAZ 10000-SB 

250 +/-1.5 

235 

42 +/-2 

200 

For HAZ 4000 models 

For the other models 

162 +/-2 

x 

4-D6 

M5 

(De pth:11mm Max ) 

M5 

Terminal 

1...+Vc 

2...-Vc 

3...0V 

4...OUTPUT 

5...GND 

6...N.C. 

• 

DRAWINGS



All dimensions are in mm • Hall effect chip location All dimensions are in mm • 

73 

LT 4000-T 

74 ITL 4000-S 75 

LT 10000-S 

82 

DV 1200/SP2, 

DV 1500, DV 2000/SP1 

83 DV 2000/SP2 

84 

Hall effect chip location 

DV 2800/SP4, 

DV 3000/SP1, DV 4200/SP4 

• 

• 

76 LV 25-P, LV 25-P/SP5 

77 LV 100 78 

DVL 50...2000 

85 

LV 100-2500...4000 

86 

DVL 750/SP2, 

DVL 1000/SP5, DVL 1500/SP2 

87 

DVL 1000/SP1, 

DVL 1500/SP1, DVL 2000/SP1 

• 

• 

• 

• 

• 

79 

LV 25-200...1200 80 CV 3-200...2000 DV 1000, 

DVL 1000/SP7, 

DVL 1000/SP8, 

81 

88 89 

90 

DV 2000, DV 4200/SP3 

DVL 1500/SP5, DVL 2000/SP5 

DVL 1500/SP6, DVL 2000/SP6 

DV 2800/SP1, DV 4000/SP2 

DRAWINGS 

86 87 

DRAWINGS

60 

351 

30 

10,5 4x 

350 

290 

57 

106 

122 

176,5 

284 

69 

139 

110 

210 

73 

54 

90 

106 

85 

LED - NORMAL OPERATION 

85 

60 

213 

30 

67,5 

0 

480 

104 

90 

Ø30 

128 

0 

169 

109 

67,5 

213 

54 

4xØ5.5 MOUNTING HOLES 

2xØ6.5 MOUNTING HOLES 

M8x1,25 - 6H 

100 

M12x1.75 - 6H 

Lifting Eyebolt DIN 582 - M12 

240 

412,5 

169,5 

77,5 

30,5 

90 

96 

70 

209 

180 

25 

99 

350 

134 

174,5 

69 




91 DV 4000/SP1 

92 DV 4200/SP1 

93 

DV 4200/SP5 

100 IT 700-SPR ULTRASTAB 

101 IT 1000-S/SP1 ULTRASTAB 

102 

ITZ 5000...16000-S,-SB, ITZ 24000-S 

ITZ 600-SPR,-SBPR, ITZ 2000-S,-SPR,-SB,-SBPR 

5,5 

! 34 MAX 

! 6,5 

109 

128 

104 

6 

9 

1 

5 

Pin list for D-Sub 9 

1: Current Return 

2: No Connection 

3: Normal Operation Status 

4: Ground 

5: -Vc 

6: Current Output 

7: No Connection 

8: Normal Operation Status 

9: +Vc 

Shield: Electrostatic shield 

! 30 

Connection 

94 ITN 12-P ULTRASTAB 

95 

IT 60-S, IT 200-S, 

IT 400-S ULTRASTAB 

96 ITB 300-S 

103 ITZ 600-SPR,-SBPR 

104 ITZ 2000-S,-SB,-SPR,-SBPR 

105 

ITZ 5000-S,-SB 

Ø 28,2 MAX 

Souriau UT001619SH 

121 

4) 

25,4 MIN 

200 35 

50 

140,3 

350 

284 

192 

10,5 THRU 

98 

66 

290 

97 ITL 900-T 

98 ITN 600-S ULTRASTAB 99 

IT 700-S, IT 700-SB, 

ITN 900-S ULTRASTAB 

106 ITZ 10000-S,-SB 

107 ITZ 16000-S,-SB 

108 

LAC 300-S, 

LAC 300-S/SP1/SP2/SP3/SP4/SP5 

100 

• 

480 

150,3 

DRAWINGS 

88 89 

152 

DRAWINGS




109 LAC 300-S/SP7 

110 LAC 300-S/SP8 111 

LA 200-SD/SP3 

LA 500-SD/SP2 

118 LTC 600-SF, LTC 1000-SF 

119 LTC 600-SFC, LTC 1000-SFC 120 LTC 600-T, LTC 1000-T 

• 

1220 +/-2 

• 

• • 

• • • 

112 LTC 350-S, LTC 500-S 

113 LTC 350-SF, LTC 500-SF 

114 LTC 350-T, LTC 500-T 

121 LTC 600-TF, LTC 1000-TF 

122 HTC 1000...3000-S/SP4 

123 LF 1005-S/SP14 

• 

• • 

• 

• 

115 LTC 350-TF, LTC 500-TF 

116 LF 505-S/SP23 

117 LTC 600-S, LTC 1000-S 

124 LTC 1000-S/SP1 

125 LTC 1000-S/SP25 

126 LTC 1000-SF/SP24 

• 

4xKA25 depth 6 

• 

• 

• 

• • 

DRAWINGS 

90 91 

DRAWINGS




127 HAR 1000-S 

128 ITC 2000-S/SP1 129 LF 2005-S/SP1 

136 LT 4000-S/SP43 

137 LT 4000-T/SP40 

138 ITC 4000-S 

• 

Shielded cable 3 x 0.5 mm 2 

• • 

130 LF 2005-S/SP27 

131 LF 2005-S/SP28 

132 LT 4000-S/SP24 

139 CD 1000-S/SP6 

140 CD 1000-T/SP7 

141 DI 30/SP1 

• 

• 

• 

133 LT 4000-S/SP44 

134 LT 4000-S/SP12 

135 LT 4000-S/SP35 

142 RA 1005-S 

143 RA 2000-S/SP1 

144 RA 2000-S/SP2 

• 

• 

DRAWINGS 

92 93 

DRAWINGS

L 

K 

L 

K 




145 RA 2000-S/SP3 

146 RA 2000-S/SP4 147 RA 2000-T/SP2 

154 PCM 5-PR/SP2 

155 TT 50-SD 

156 TT 100-SD 

8 

16 

13 

3.2 

k ( Wt ) 

l ( Bk) 

18 

3.2 

k( Wt ) 

l ( Bk) 

• • 

Ip 

43 

23.5 

27.5 

10 8 

1000 +/-20.00 

1.5 

Ip 

51 

31.5 

23.5 

10 8 

1000 +/-20.00 

1.5 

N.P 

N.P 

L 

K 

32.5 

L 

K 

40.5 

4 23.5 4 

2.5 

4 28.5 4 

2.5 

148 

PCM 10-P, 

PCM 20-P, PCM 30-P 

149 PCM 10-P/SP1 

150 

PCM 20-P/SP2, 

PCM 20-P/SP6, PCM 30-P/SP1 

157 AT 5...150 B5/B10 

158 AT 5...150 B420L 

159 

AK 50...200 B10, 

AK 5...200 B420L 

16 

16 

• • 

18 

1 8 

1 8 

1 8 

• • 

• • 

23.5 

31.5 

51 

N.P 

16 

22 

4 

(-) (+) 

28.5 

+ 

+ 

4 

1.5 

40 .5 

23.5 

31.5 

51 

N.P 

16 

2 2 

4 

(O UT ) (+V ) 

28.5 

+ 

+ 

4 

1 .5 

40 .5 

2-M 3 terminal with cover 

2.5 

2-M3 

terminal with cover 

2 .5 

151 PCM 20-P/SP3 

152 PCM 20-P/SP4 

153 

PCM 5-PR/SP1, 

PCM 10-PR/SP1 

160 AKR 5...200 B420L 

161 

AK 50...200 C10, 

AK 5...200 C420L, AKR 5...200 C420L 

162 

AP 50...400 B5/B10 

APR 50...400 B5/B10 

61 

61.0 

Output Voltage 

Selection Switch 

20 

55 

Range Selection Switch 

16.40 

19 

4.70 

• • • • • • 

21.7 

13 

57.2 

24.5 

55.4 

49 

40(distance between screws) 

37 

33.50 

21 

14.80 

DIN size 35.50 

69 

3.2 

13 

21.7 

89.7 

30 

3.2 

23.5 

88.9 

23.7 

Axisof aperture 

25 

67 

61 

4.5 

4.5 

18.50 

DRAWINGS 

39 

18.50 

78 

Secondary terminals: 

77.3 

94 95 

15 

DRAWINGS


All dimensions are in mm 

86 

163 

166 AHR 500...2000 B5/B10/B420 

8.30 

20 

3 

55 

22.28 

35 

Range Selection Switch 

40(distance between screws) 

33.50 

Axis of aperture 

18.50 

18.50 

174 

104 

5.50 

55 

110 

150 

40 

21 

14.80 

AP 50...400 B420L 

APR 50...400 B420L 

4.70 

37 

15 

37 

67 

9.10 

16.40 

25 

25 

50.50 

54.10 

DIN size35.50 

69 

20 

164 AKR 750/2000 C420L J 

4.5 

167 

114 

88 

101.5 

112 

76.2 

28.4 

DK 100...400 

B5/B10/B420/B020/B420 B 

27 

63.5 

165 

25 

33. 80 

15 

4. 60 

6 

8. 30 

22.28 

• Hall effect chip location 

70 

60 

32 

90 

DHR 100...1000 C5/C10/C420 

6.80 

• 

78 

6. 80 

168 DK 20...100 C420 B 

10 

2. 50 

4. 60 

40 

25 

4 

- 

+ 

70 

PRODUCT CODING / Industrial & Traction Transducers 

Family 

A : transducers using the principle of isolation amplifi er 

C : transducers using the principle of fl uxgate compensation 

D : digital transducers 

F : transducers using the detector of fi elds 

H : transducers using the Hall effect without magnetic compensation 

I : compensation current transducers with high accuracy 

L : transducers using the Hall effect with magnetic compensation 

R : transducers using the principle of the Rogowski loop 

T : transducers using the simple transformer effect 

Group: 

A or AK or AL or AS 1) 

or AT or AX or AZ or AXC 

AR or AW or AC or X or XN 

AF 

AH 

AIS, XS, ASS, AFS 

ASR, KSR, LSR 

AY 

B 

C 

D 

HS 

F 

FWS 

I 

MS 

O 

OP 

TC 

TD 

TKS, TFS 

TP, TO, TN, TZ, TL, T, TA, TB, TY 

TR 

TS 

TSR, TSP 

TT 

V, VL 

: with rectangular laminated magnetic circuit 

: with rectangular laminated magnetic circuit 

: with rectangular laminated magnetic circuit and fl at housing 

: vertical mounting 

: rectangular laminated magnetic circuit + 

unidirectional power supply + reference access 

: rectangular magnetic circuit + unipolar power supply + reference access 

: rectangular magnetic circuit + hybrid 

: double toroidal core 

: apparent printed circuit 

: differential measurement 

: Hall effect without magnetic compensation; magnetic concentrators 

+ unidirectional power supply + reference access. When used with 

F (FHS): Minisens, SO8 transducer 

: fl at design 

: fl at mounting + mounting on wire + unidirectional power supply 

: shunt isolator 

: surface mounted device + unidirectional power supply + reference access 

: using ASIC providing multitude of options + unidirectional power supply + reference access 

: opening laminated magnetic circuit 

: transducer reserved for the traction 

: double measurement 

: core, fl at case + unidirectional power supply + reference access 

: toroidal core 

: opening core 

: core + unipolar power supply 

: core + unipolar power supply + reference access 

: triple measurement 

: voltage measurement 

: compact hybrid for PCB mounting 

Y 

Nominal Amperage 

- current transducer : rms amperes 

- voltage tranducer : rms amperes-turns 

- 0000 : Nominal Voltage (-1000 meaning 1000 V, with built in primary resistor R1) 

- AW/2 : particular type of voltage transducer 

- AW/2/200: Nominal voltage for AW/2 design (200 meaning 200V with built in primary resistor R1) 

169 DH 500...2000 B 420L B 

EM4T II 

Execution 

N : multiple range 

P : assembly on printed circuit 

S(I) : with through-hole for primary conductor 

SM : surface mounted 

T(I) : with incorporated primary busbar 

DRAWINGS 

86 

8.30 

3 

96 

12.12 

35 

174 

104 

5.50 

55 

110 

150 

40 

15 

9.10 

37 

25 20 

I P Current direction 

50.50 

54.10 

HLSR 10-SM/... 

LTC 600-SF/... 

Particularities (1or 2 optional characters or fi gures) 

B : bipolar output voltage 

BI : bipolar current output 

C : fastening kit without bus bar 

D : can be disassembled 

F : with mounting feet 

FC : with mounting feet + fastening kit 

P : assembly on printed circuit 

PR : programmable 

R : rms output 

RI : rms current output 

RS : serial output 

RU : rms voltage output 

Variants 

Differing from the standard product... /SPXX 

1) When used with L (LAS): current transducer with 

secondary winding and unipolar power supply 

using Eta technology 

When used with C (CAS): current transducer with 

rectangular magnetic circuit + unipolar power 

supply 

When used with H (HAS): current transducer with 

rectangular magnetic circuit using O/L Hall effect 

technology 

97 

PRODUCT CODING

Symbols and Terms 

BW 

Frequency bandwidth 

R P 

Primary coil resistance at T A max 

CTI 

Comparative Tracking Index 

R S 

Secondary coil resistance at T A max 

d Cl 

Clearance distance 

T A 

Ambient operating temperature 

d Cp 

Creepage distance 

TCR IM 

Temperature coefficient of R IM 

G 

Sensitivity 

TCI OUT 

Temperature coefficient of I OUT 

L 

I C 

Linearity error 

Current consumption 

I O 

Zero offset current, T A 

= 25 °C 

I OE 

Electrical offset current, T A 

= 25 °C 

I OM 

I OT 

I OUT 

I PN 

I P 

I PM 

I PR 

I S 

I SN 

IPxx 

K N 

M 

N 

N p 

N S 

N p 

/N S 

N T 

R IM 

R L 

R M min 

R M max 

Residual current @ I P 

= 0 after an overload 

Thermal drift of offset current 

Max. allowable output current at I PN 

or V PN 

Primary nominal RMS current 

Primary current 

Primary current, measuring range 

Primary residual current 

Secondary current 

Secondary nominal RMS current 

Protection degree 

Turns ratio 

Mutual inductance 

Number of turns 

Number of primary turns 

Number of secondary turns 

Turns ratio 

Number of turns (test winding) 

Internal measuring resistance 

Load resistance 

Minimum measuring resistance at T A max 

Maximum measuring resistance at T A max 

TCI OE 

Temperature coefficient of I OE 

TCV OUT 

TCV OE 

TCV Ref 

Temperature coefficient of V OUT 

Temperature coefficient of V OE 

Temperature coefficient of V Ref 

TCV OUT 

/ V Ref 

Temperature coefficient of V OUT 

/V Ref 

@ I P 

= 0 

TCG Temperature coefficient of the gain 

t r 

t ra 

U C 

U b 

U d 

U e 

Response time 

Reaction time 

Supply voltage 

Rated isolation voltage RMS, reinforced or basic isolation 

RMS voltage for AC isolation test, 50 Hz, 1 min 

RMS voltage for partial discharge extinction @ 10 pc 

U Nm 

Rated insulation voltage according to EN 50124-1 

U W 

V H 

Impulse withstand voltage, 1,2/50 μs 

Hall Voltage 

V O 

Zero offset voltage, T A 

= 25 °C 

V OE 

Electrical offset voltage, T A 

= 25 °C 

V OM 

V OT 

V OUT 

V PN 

V P 

V Ref 

Residual voltage @ I P 

= 0 after an overload 

Temperature variation of offset voltage 

Output voltage at ± I PN 

or V PN 

Primary nominal RMS voltage 

Primary voltage, measuring range 

Reference voltage 

X Typical accuracy, T A 

= 25 °C 

X G 

Global accuracy @ I PN 

or V PN 

, T A 

= 25 °C 

5 Year Warranty on LEM Transducers 

We design and manufacture high quality and highly reliable products for our customers 

all over the world. 

We have delivered several million current and voltage transducers since 1972 and most of 

them are still being used today for traction vehicles, industrial motor drives, UPS systems 

and many other applications requiring high quality standards. 

The warranty granted on LEM transducers is for a period of 5 years (60 months) from the 

date of their delivery (not applicable to Energy-meter product family for traction 

and automotive transducers where the warranty period is 2 years). 

During this period LEM shall replace or repair all defective parts at its’ cost (provided the 

defect is due to defective material or workmanship). 

Additional claims as well as claims for the compensation of damages, which do not occur 

on the delivered material itself, are not covered by this warranty. 

All defects must be notified to LEM immediately and faulty material must be returned to the 

factory along with a description of the defect. 

Warranty repairs and or replacements are carried out at LEM’s discretion. 

The customer bears the transport costs. An extension of the warranty period following 

repairs undertaken under warranty cannot be granted. 

The warranty becomes invalid if the buyer has modified or repaired, or has had repaired by 

a third party the material without LEM’s written consent. 

The warranty does not cover any damage caused by incorrect conditions of useand cases 

of force majeure. 

No responsibility will apply except legal requirements regarding product liability. 

The warranty explicitly excludes all claims exceeding the above conditions. 

Geneva, 21 June 2011 

R 1 

Primary resistor (voltage transducer) 

SYMBOLS 

Industry Current and Voltage Transducers, Edition 2013, Published by LEM International SA 

© LEM International SA, Switzerland 2013, e-mail: sro@lem.com 

All Rights reserved 

The paper of this publication is produced with pulp bleached without chlorine, neutral sized and non-aging. 

As far as patents or other rights of third parties are concerned, liability is only assumed for components per se, not for applications, processes and circuits 

implemented with components or assemblies. For more details see the available data sheets. 

Terms of delivery and rights to change design or specifications are reserved. 

98 

François Gabella 

CEO LEM 

June 2011/Version 1 

99 

WARRANTY

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