LTC Family

Modular and compact current sensors for traction applications

LTC - Traction current sensors

The LTC current transducers are meticulously optimized for the electronic measurement of DC, AC, and pulse currents while maintaining galvanic isolation between the primary and secondary circuits. These sensors are specifically engineered for traction applications, ensuring efficient operation in both fixed installations and onboard trains.

The LTC railway current sensors are modular and compact sensors that offer flexibility in their mounting. They can be installed either horizontally or vertically, and the feet can be mounted in three different ways, creating three possible vertical mountings. Additionally, the busbar can be mounted in two different ways, catering to customer preferences.

The LTC family operates based on the closed-loop Hall effect sensor principle, which guarantees excellent accuracy and rapid response times. This technology makes these sensors reliable and well-suited for the demanding requirements of railway applications.

LTC – Features and benefits

LTC traction current sensors

Features

  • Closed loop (compensated) current transducer using the Hall effect
  • Insulating plastic case recognized according to UL 94-V0
  • Compact
  • Modular Design allowing horizontal or vertical mounting
  • Available with or without busbar integrated &/or feet integrated or can be delivered separately
  • Feet can be mounted in 3 different ways to create 3 possible vertical mountings
  • Busbar can be mounted in two ways according to customer preference
  • AC&DC isolated current measurements from 200 to 1000 ARMS

Main characteristics

  • Power supply +/- 15 to 24 V
  • Operating temperature range: -40°C to +85°C
  • Shield available as standard
  • Current output
  • 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

Typical applications

The LTC sensor family is purposefully designed for traction and railway applications, finding use in a range of systems, including:

  • Single or three phase inverters
  • Propulsion and braking choppers
  • Propulsion converters
  • Auxiliary converters
  • Battery chargers

LEM LTC – Download & Technical Characteristic

ProductDocumentPrimary nominal RMS voltageSupply Voltage rangeOp. Temperature
LTC 200-SDatasheet
3D
200 A24 to 15-40 to 70 °C
LTC 200-S/SP1Datasheet200 A24 to 15-40 to 70 °C
LTC 350-SDatasheet
3D
350 A24 to 15-40 to 85 °C
LTC 350-SFDatasheet
3D
350 A24 to 15-40 to 85 °C
LTC 350-TDatasheet
3D
350 A24 to 15-40 to 85°C
LTC 350-TFDatasheet350 A24 to 15-40 to 85°C
LTC 400-SDatasheet
3D
400 A24 to 15-40 to 85 °C
LTC 400-SFDatasheet
3D
400 A24 to 15-40 to 85 °C
LTC 600-SDatasheet
3D
500 A24 to 15-40 to 85 °C
LTC 600-SFDatasheet
3D
500 A24 to 15-40 to 85°C
LTC 600-TDatasheet
3D
500 A24 to 15-40 to 85°C
LTC 600-TFDatasheet500 A24 to 15-40 to 85 °C
LTC 600-TF/SP19Datasheet
3D
500 A24 to 15-40 to 85 °C
LTC 500-SDatasheet
3D
500 A24 to 15-40 to 85 °C
LTC 500-SFC/SP2Datasheet
3D
500 A24 to 15-40 to 85°C
LTC 500-SF/SP7Datasheet
3D
500 A24 to 15-40 to 85 °C
LTC 500-TDatasheet
3D
500 A24 to 15-40 to 85 °C
LTC 500-TFDatasheet
3D
500 A24 to 15-40 to 85 °C
LTC 600-S/SP15Datasheet
3D
600 A24 to 15-40 to 85°C
LTC 600-S/SP17Datasheet600 A24 to 15-40 to 85°C
LTC 600-T/SP16Datasheet
3D
600 A24 to 15-40 to 85 °C
LTC 1000-SDatasheet
3D
1000 A24 to 15-40 to 85 °C
LTC 1000-SFDatasheet
3D
1000 A24 to 15-40 to 85 °C
LTC 1000-SF/SP14Datasheet1000 A24 to 15-40 to 85°C
LTC 1000-SF/SP33Datasheet1000 A24 to 15-40 to 85°C
LTC 1000-SF/SP34Datasheet
3D
1000 A24 to 15-40 to 85 °C
LTC 1000-SF/SP4Datasheet
3D
1000 A24 to 15-40 to 85 °C
LTC 1000-S/SP1Datasheet
3D
1000 A24 to 15-40 to 85 °C
LTC 1000-S/SP28Datasheet
3D
1000 A24 to 15-40 to 85 °C
LTC 1000-TDatasheet
3D
1000 A24 to 15-40 to 85 °C
LTC 1000-TFDatasheet
3D
1000 A24 to 15-40 to 85 °C
LTC 1000-SF/SP26Datasheet
3D
1300 A24 to 15-40 to 70 °C

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