LA 150-P

## **Current Transducer LA 150-P** 

## _I_ **= 150 A** P N 

For the electronic measurement of currents: DC, AC, pulsed..., with galvanic separation between the primary circuit and the secondary circuit. 

## **Features** 

## ~~**Electrical data**~~ 

|_I_P N|Primary nominal RMS current|150|A|
|---|---|---|---|
|_I_P M|Primary current, measuring range|0 ... ±212|A|
|_R_M|Measuring resistance @ 85 °C|_R_M min _R_M max||
||with ±12 V<br>@ ±150 Amax|0<br>40|Ω|
||@ ±212 Amax<br>with ±15 V<br>@ ±150 Amax|0<br>3<br>0<br>78|Ω<br>Ω|
|_I_S N<br>_N_P/_N_S<br>_U_C<br>_I_C|@ ±212 Amax<br>Secondary nominal RMS current<br>Conversion ratio<br>Supply voltage (±5 %)<br>Current consumption|0<br>30<br>Ω<br>75<br>mA<br>1 : 2000<br>±12 ... 15<br>V<br>10 (@ ±15 V) +_I_SmA||



## ~~**Accuracy - Dynamic performance data** Po~~ 

_ε_ Error @ _I_ P N, _T_ A = 25 °C < 0.5 % _ε_ L Linearity error < 0.1 % Typ Max _I_ O E Electrical offset current @ _I_ P = 0, _T_ A = 25 °C ±0.10 mA _I_ O M Magnetic offset current @ _I_ P = 0 and specified _R_ M, after an overload of 3 × _I_ P N ±0.25 mA _I_ O _T_ Temperature variation of _I_ O -40 °C ... +85 °C ±0.15 ±0.30 mA _t_ D 10 Delay time to 10 % of the final output value for _I_ P N < 300 ns _t_ D 90 Delay time[1)] to 90 % of the final output value for _I_ P N < 500 ns _BW_ Frequency bandwidth (−1 dB) DC ... 150 kHz 

## ~~**General data** Lo~~ 

|_T_A<br>_T_A st<br>_R_S|A st|Ambient operating temperature<br>Ambient storage temperature<br>Resistance of secondary winding @_T_A= 25 °C|−40 ... +85<br>−40 ... +90<br>64 ±2|°C<br>°C<br>Ω|
|---|---|---|---|---|
|_m_||Mass|< 25|g|
|||Standards|EN 50178: 1997||
||||UL 508: 2010||



- ●Closed loop (compensated) current transducer using the Hall effect 

- ●Insulating plastic case recognized according to UL 94-V0. 

## **Advantages** 

- ●Excellent accuracy 

- ●Very good linearity 

- ●Low temperature drift 

- ●Optimized response time 

- ●Wide frequency bandwidth 

- ●No insertion losses 

- ●High immunity to external interference 

- ●Current overload capability. 

## **Applications** 

- ●AC variable speed drives and servo motor drives 

- ●Static converters for DC motor drives 

- ●Battery supplied applications 

- ●Uninterruptible Power Supplies (UPS) 

- ●Switched Mode Power Supplies (SMPS) 

- ●Power supplies for welding applications. 

## **Application domain** 

- ●Industrial. 

Note:[1)] With a d _i_ /d _t_ of 100 A/µs. 

N° 52.B4.39.000.0 

Page 1/4 LEM International SA Route du Nant-d’Avril, 152 1217 Meyrin www.lem.com 

LEM reserves the right to carry out modifications on its transducers, in order to improve them. 

24July2024/Version 5 

## **Current Transducer LA 150-P** 

## **UL 508:Ratings and assumptions of certification** 

File # E189713 Volume: 2 Section: 1 

## **Standards** 

- ●CSA C22.2 NO. 14 - 10 INDUSTRIAL CONTROL EQUIPMENT - Edition 11 - Revision Date 2011/08/01 

- ●UL 508 STANDARD FOR INDUSTRIAL CONTROL EQUIPMENT - Edition 17 - Revision Date 2010/04/15. 

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|**Parameter**|**Symbol**|**Unit**|**Value**|
|---|---|---|---|
|||||
|Primary potential involved||V AC/DC|600|
|Max surrounding air temperature|_T_A|°C|85|
|Primary current|_I_P|A|0 to 150|
|Secondary supply voltage|_U_C|V DC|±12 ... 15|
|Output signal|_I_S N|mA|65|



## **Conditions of acceptability** 

When installed in the end-use equiment, consideration shall be given to the following _:_ 

- _1 - These devices must be mounted in a suitable end-use enclosure._ 

- _2 - The terminals have not been evaluated for field wiring._ 

- _3 -  The LA 150 series are intended to be mounted on the printed wiring board of the end-use equipment (with a minimum CTI of 100)._ 

- _4 - Low voltage circuits are intended to be powered by a circuit derived from an isolating source (such as a transformer, optical isolator, limiting impedance or electro-mechanical relay) and having no direct connection back to the primary circuit (other than through the grounding means)._ 

- _5 - Base on results of temperature tests, in the end use application, a maximum of 100 °C cannot be exceeded at soldering point between primary coil pin and soldering point of on the primary bus bar (corrected to the appropriate evaludated max. surrounding air)._ 

## **Marking** 

Only those products bearing the UL or UR Mark should be considered to be Listed or Recognized and covered under UL’s Follow-Up Service.Always look for the Mark on the product. 

Page 2/4 LEM International SA Route du Nant-d’Avril, 152 1217 Meyrin www.lem.com 

LEM reserves the right to carry out modifications on its transducers, in order to improve them. 

24July2024/Version 5 

## **Current Transducer LA 150-P** 

||~~**Insulation coordination**~~|||
|---|---|---|---|
|_U_d|RMS voltage for AC insulation test, 50 Hz/1 min|4.3|kV|
|_U_Ni|Impulse withstand voltage 1.2/50 µs|8|kV|
|_U_t|Partial discharge RMS test voltage (_q_m< 10 pC)|1.3|kV|
|||Min||
|_d_Cp|Creepage distance|8|mm|
|_d_CI|Clearance|8|mm|
|_CTI_|Comparative tracking index (group I)|600||



## **Applications examples** 

According to **EN 50178 and IEC 61010-1 standards** and following conditions: 

- ●Over voltage category OV 3 

- ●Pollution degree PD2 

- ●Non-uniform field 

||**EN 50178**|**IEC 61010-1**|
|---|---|---|
|_d_Cp**,**_d_CI**,**_U_Ni|Rated insulation voltage|Nominal voltage|
|Basic insulation|1000 V|1000 V|
|Reinforced insulation|600 V|400 V|



## **Safety** 

This transducer must be used in limited-energy secondary circuits according to IEC 61010-1. 

This transducer must be used in electric/electronic equipment with respect to applicable standards and safety requirements in accordance with the manufacturer’s operating instructions. 

## Caution, risk of electrical shock 

When operating the transducer, certain parts of the module can carry hazardous 

voltage (eg. primary busbar, power supply). 

Ignoring this warning can lead to injury and/or cause serious damage. 

This transducer is a build-in device, whose conducting parts must be inaccessible after installation. 

A protective housing or additional shield could be used. Main supply must be able to be disconnected. 

Page 3/4 LEM International SA Route du Nant-d’Avril, 152 1217 Meyrin www.lem.com 

LEM reserves the right to carry out modifications on its transducers, in order to improve them. 

24July2024/Version 5 

## **Dimensions LA 150-P** (in mm) 

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## **Connection** 

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## **Mechanical characteristics** 

- ●General tolerance 

±0.5 mm 

13.5 × 10 mm 

- ●Primary through-hole 

- ●Fastening & connection of secondary 3 pins 0.6 × 0.6 mm Recommended PCB hole ⌀ 1.1 mm 

## **Remarks** 

- _I_ S is positive when _I_ P flows in the direction of the arrow. 

- ●Temperature of the primary conductor should not exceed 100 °C. 

- ●Installation of the transducer must be done unless otherwise specified on the datasheet, according to LEM Transducer Generic Mounting Rules. Please refer to LEM document N°ANE120504 available on our Web site: https://www.lem.com/en/fle/3137/download 

- ●Dynamic performances (d _i_ /d _t_ and delay time) are best with a single bar completely filling the primary hole 

- ●This is a standard model. For different versions (supply voltages, turns ratios, unidirectional measurements...), please contact us. 

Page 4/4 LEM International SA Route du Nant-d’Avril, 152 1217 Meyrin www.lem.com 

LEM reserves the right to carry out modifications on its transducers, in order to improve them. 

24July2024/Version 5