LTC

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

Product Document Primary nominal RMS voltage Supply Voltage range Op. Temperature
LTC 200-S

Datasheet
3D

200 A 24 to 15 -40 to 70 °C
LTC 200-S/SP1

Datasheet

200 A 24 to 15 -40 to 70 °C
LTC 350-S Datasheet
3D
350 A 24 to 15 -40 to 85 °C
LTC 350-SF Datasheet
3D
350 A 24 to 15 -40 to 85 °C
LTC 350-T Datasheet
3D
350 A 24 to 15 -40 to 85°C
LTC 350-TF Datasheet 350 A 24 to 15 -40 to 85°C
LTC 400-S Datasheet
3D
400 A 24 to 15 -40 to 85 °C
LTC 400-SF Datasheet
3D
400 A 24 to 15 -40 to 85 °C
LTC 600-S Datasheet
3D
500 A 24 to 15 -40 to 85 °C
LTC 600-SF Datasheet
3D
500 A 24 to 15 -40 to 85°C
LTC 600-T Datasheet
3D
500 A 24 to 15 -40 to 85°C
LTC 600-TF Datasheet 500 A 24 to 15 -40 to 85 °C
LTC 600-TF/SP19 Datasheet
3D
500 A 24 to 15 -40 to 85 °C
LTC 500-S Datasheet
3D
500 A 24 to 15 -40 to 85 °C
LTC 500-SF Datasheet
3D
500 A 24 to 15 -40 to 85°C
LTC 500-SFC/SP2 Datasheet
3D
500 A 24 to 15 -40 to 85°C
LTC 500-SF/SP7 Datasheet
3D
500 A 24 to 15 -40 to 85 °C
LTC 500-T Datasheet
3D
500 A 24 to 15 -40 to 85 °C
LTC 500-TF Datasheet
3D
500 A 24 to 15 -40 to 85 °C
LTC 600-S/SP15 Datasheet
3D
600 A 24 to 15 -40 to 85°C
LTC 600-S/SP17 Datasheet 600 A 24 to 15 -40 to 85°C
LTC 600-T/SP16 Datasheet
3D
600 A 24 to 15 -40 to 85 °C
LTC 1000-S Datasheet
3D
1000 A 24 to 15 -40 to 85 °C
LTC 1000-SF Datasheet
3D
1000 A 24 to 15 -40 to 85 °C
LTC 1000-SF/SP14 Datasheet 1000 A 24 to 15 -40 to 85°C
LTC 1000-SF/SP33 Datasheet 1000 A 24 to 15 -40 to 85°C
LTC 1000-SF/SP34 Datasheet
3D
1000 A 24 to 15 -40 to 85 °C
LTC 1000-SF/SP4 Datasheet
3D
1000 A 24 to 15 -40 to 85 °C
LTC 1000-S/SP1 Datasheet
3D
1000 A 24 to 15 -40 to 85 °C
LTC 1000-S/SP28 Datasheet
3D
1000 A 24 to 15 -40 to 85 °C
LTC 1000-T Datasheet
3D
1000 A 24 to 15 -40 to 85 °C
LTC 1000-TF Datasheet
3D
1000 A 24 to 15 -40 to 85 °C
LTC 1000-SF/SP26 Datasheet
3D
1300 A 24 to 15 -40 to 70 °C

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