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LEM - CURRENT TRANSDUCER, VOLTAGE TRANSDUCER, SENSOR, POWER MEASUREMENT


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LEM products fall broadly into multiple areas of application and are used within general industry, automotive industry, for railway and trackside applications, energy measurement relating to railway on-board applications, energy & automation, battery monitoring, and in Wi-LEM - wireless sub-metering networks that measure energy consumption.


Industry applications
  • Isolated current and voltage measurement with instantaneous current or voltage output. Non contact or with integrated conductor or clip-on current measurement from 0.1 A to 20,000 A.
  • High voltage measurement from 10 V up to 6,400 V.
  • Different technologies used to cover required performances, such as accuracy from some ppm to several percents, or response time, bandwidth.

Railway and trackside applications
  • Isolated current and voltage measurement with instantaneous current or voltage output.
  • Non contact or with integrated bus bar, or clip-on current measurement from 0.1 A to 20 000 A.
  • High voltage measurement from 10 V to 6,400 V.
  • High modularity offered in the various designs for a high level of mounting flexibility. Large options available for the possible secondary connections inspired by the railway market need.
  • High performances reached (accuracy from 0.2% to 2.7%, short response time from few ns to several μs).

Energy measurement for railway on-board applications
  • EM4T Energy Meter for Traction. Certified for all European networks. It is an independent accounting certified measuring system for single phase energy metering designed for on-board applications.

Energy & Automation
  • LEM integrated transducers combine in a single case the most advanced AC & DC sensing technologies with signal conditioning electronic circuits (RMS or True RMS, threshold detection, etc).
  • They feature a switch or relay type output or an electrically isolated standard signal (0-5VDC, 0-10VDC or 4-20mA) that can be directly handled by any PLC or monitoring device.
  • These products require complex adjustment and calibration operations and benefit from the LEM technology and manufacturing know-how to achieve the highest performance and quality level of the market.

Battery monitoring
  • The Sentinel intelligent transducer measures cell voltage, internal temperature and internal impedance. It also provides cell voltage and temperature data during battery discharge. This data is passed via a proprietary serial comm. Bus (S-bus) to an Overview and Control System (OCS).

Wi-LEM
  • Wi-LEM is a wireless sub-metering network to measure your energy consumption: Current max, Voltage min, Active Energy, Reactive Energy, Apparent Energy and Frequency.

Automotive
  • LEM Automotive specializes in developing and manufacturing current transducers for battery management and motor drive applications in cars, busses and trucks. LEM products can contribute to significant energy savings and an environmental friendly world. By controlling the current in energy-intensive applications LEM participates to the global effort to reduce consumption.


Browse Products:
      • For Industry
      • For Energy & Automation
      • For Traction & Trackside
      • For Automotive
      • Battery Monitoring
      • Wi-LEM
      • Energy Meter EM4T
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Analog current input LA, LAH, LF, LT, LTC Series

 TypeNominal Current IPN –Ask
[A]
Measure range ±Ip
[A]
Window dimension [mm]Nominal secondary current IS
[mA]
Measurement accuracy IPN [%]Bandwidth [kHz]Voltage  [kV]Operation temperature range [°C]Supply voltage Vc
[V]
LEM LA 25-NP/SP14

LA 25–NP/SP14

0,25 0,36 - 25 ±0,5 0...150 1,7 -10...70 ±15
LEM LA 25-NP

LA 25–NP

5; 6; 8; 12; 25 7; 9; 12; 18; 36 - 25; 24; 24;
24; 25
±0,5 0...150 2.5 0...70 ±15
LEM LAH 25-NP

LAH 25–NP

8; 12; 25 0...18; 27; 55 - 24; 24; 25 ±0,3 0...200 5 -25...85 ±12...15
LEM LA 55-P/SP1

LA 55–P/SP1

50 100 12,7 x 7 25 ±0,65 0...200 2,5 -25...85 ±12...15
LEM LAH 50-P

LAH 50–P

50 0...110 - 25 ±0,25 0...200 5 -25...85 ±12...15
LEM LA 100-P

LA 100-P

100 150 12,7 x 7 50 ±0,45 0...200 2 0...70 ±12...15
LEM LAH 50-P

LAH 100–P

100 0...160 - 50 ±0,25 0...200 5 -25...85 ±12...15
LEM LA 125 P/SP1

LA 125–P/SP1

125 200 17 x 11 62,5 ±0,6 0...100 3 -25...85 ±12...15
LEM LAH 125-P

LAH 125–P

125 200 - 125 ±0,41 0...100 5 -40...85 ±12...15
LEM LA 200-P

LA 200–P

200 300 13 x 11 100 ±0,4 0...100 3 -25...85 ±12...15
LEM LA 205-S

LA 205–S

200 300 23 x 18 100 ±0,8 0...100 3,25 -10...85 ±12...15
LEM LA 205-T

LA 205–T

200 300 20 x 5 100 ±0,8 0...100 3,25 -10...85 ±12...15
LEM LF 205-S

LF 205–S

200 420 15,5 100 ±0,5 0...100 3,5 -40...85 ±12...15
LEM LF 210-S

LF 210–S

200 420 Ø15,59 100 0,25 0...100 3,5 -40...85 ±11,4..15,75
LEM LA 255-S

LA 255–S

250 500 23 x 18 125 ± 0,8 0...100 3,25 -10...85 ±12...18
LEM LA 305-S/SP4

LA 305–S/SP4

300 500 25,5 120 ±0,8 0...100 3,5 -25...85 ±12...15
LEM LA 305-T

LA 305–T

300 500 20 x 5 120 ±0,8 0...100 3,5 -10...85 ±12...18
LEM LF 305-S

LF 305–S

300 500 Ø 20 150 ±0,4 0...100 3 -10...70 ±12...20
LEM LF 310-S

LF 310-S

300 500 Ø 20 150 0,25 0..100 3,8 -40...85 ±11,4..21
LEM LA 306-S

LA 306-S

300 700 13 x 30 150 ±0,7 0...50 5,5 -40...85 ±15
LEM LTC 350-SF

LTC 350–SF

350 1200 Ø 27,5 175 ±0,5 0...100 12 -40...85 ±15...24
LEM LA 305-S/SP1

LA 305–S/SP1

500 800 25,5 250 ±0,8 0...100 3,5 -10...85 ±12...18
LEM LT 505-S

LT 505–S

500 1200 40,5 100 ±0,6 0...150 6 -10...85 ±15...24
LEM LT 505-T

LT 505–T

500 1200 40 x 6 100 ±0,6 0...150 6 -10...85 ±15...24
LEM LF 505-S

LF 505–S

500 800 R 15 100 ±0,6 0...100 3 -40...70 ±15...24
LEM LF 510-S

LF 510-S

500 800 Ø 30,2 100 0,6 0..100 3,8 -40...70 ±14,25...25,2
LEM LTC 600-SF

LTC 600–SF

500 1500 Ø 42 100 < ±0,7 0...100 13,4 -40...85 ±15...24
LEM LT 1005-S

LT 1005–S

1000 2000 40,5 200 ±0,4 0...150 3,5 -10...85 ±15...24
LEM LF 1010-S

LF 1010-S

1000 1500 Ø 38,5 200 0,4 0..100 3,8 -40...85 ±14,25...25,2
LEM LTC 1000-SF

LTC 1000–SF

1000 2400 Ø 42 200 < ±0,4 0...100 13,4 -40...85 ±15...24
LEM LF 1005-S

LF 1005–S

1000 1500 40,5 200 ±0,4 0...150 3 -10...85 ±15...24
LEM LT 2005-S

LT 2005–S

2000 3 000 60,5 400 ±0,3 0...100 6 0...70 ±15...24
LEM LF 2005-S

LF 2005–S

2000 3000 60,5 400 ±0,3 0...100 6 -25...70 ±15...24
LEM LT 4000-S

LT 4000–S

4000 6000 Ø 102 800 ±0,5 0...100 6 -25...70 ±24
LEM LT 10000-S

LT 10000–S

10000 15000 Ø 200 1000 ±0,3 0...100 10 -25...70 ±48...60
LEM sensors we used to stock and sell:
  • LA55-P/SP23
  • LA205-S
  • LT10000-S
  • LAH50-P
  • LTS25-NP
  • HAIS150-TP
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