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

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

LTC Sensors – ASK FOR SAMPLES / QUOTATIONS

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