Electrical Power & Protection


Railway current and voltage transducers

November 2018 Electrical Power & Protection

Swiss manufacturer LEM has released its new traction catalogue describing railway current and voltage transducers. The new catalogue outlines the various technologies used by an isolated transducer design, namely open-loop ‘Hall’, closed-loop ‘Hall’ and closed-loop fluxgate. Voltage transducers are based on closed-loop ‘Hall’ or new isolated digital technology, offering higher specifications.

The company provides transducers suitable for on-board rolling stock, for example, main rectifier, main inverter or drive propulsion inverter, auxiliary inverter. Trackside substation transducers are also available for rectifiers, DC switch-gear as well as DC energy monitoring. Also catered for are interference frequency detection, main transformer saturation detection, fault detection and ground leakage. The traction transducers are also suitable for mining trucks, trolley buses, subway railways and points machine monitoring.

LEM transducers carry a five year warranty and comply with European standards and regulations:

• EN 50463-x (2012): Railway application, Energy measurement on board trains, DC measurement Class 2 and AC measurement Class 1.5.

• EN50155 (2007): Railway applications, Electronic equipment used on rolling stock.

• EN50121-3-2 (2006): Railway applications, Electromagnetic compatibility. Part 3-2: Rolling stock – Apparatus.

• EN 61373 (2010): Railway applications, Rolling stock equipment, shock and vibration tests.

• EN 50121-1 (2001): Railway applications, installation coordination. Part 1: Basic requirements.

• IEC 62056-21 (2002): Electricity metering, Data exchange for meter reading, tariff and load control. Part 21: Direct local data exchange.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Simple acquisition of energy consumption values
November 2020, Phoenix Contact , Electrical Power & Protection
By developing the new components of the EMpro product family, Phoenix Contact has found a solution that satisfies most energy data gathering applications.

Read more...
Siemens Energy turbines generate low-emission power
November 2020 , Electrical Power & Protection
Siemens Energy helps Total achieve low-emission goals for largest LNG project in Africa.

Read more...
Maintaining battery backup systems
November 2020, Comtest , Electrical Power & Protection
Standby battery backup systems play a critical role in keeping essential operations functional in the event of a utility outage.

Read more...
Electrical loggers for energy savings
October 2020, Comtest , Electrical Power & Protection
Fluke energy loggers deliver a complete picture to reduce energy costs and improve the bottom line.

Read more...
Power supply components and services for marine applications
October 2020 , Electrical Power & Protection
Vert Energy works closely with the marine and offshore sector offering the supply of quality branded components and the support of a comprehensive repair and maintenance service.

Read more...
Mines reduce fire hazards
August 2020 , Electrical Power & Protection
Underground mines in southern, central, and west Africa have been seeing the safety benefits of dry-type transformers from Johannesburg-based Trafo Power Solutions. According to managing director ...

Read more...
RS Components stocks Eaton contactors
August 2020, RS Components SA , Electrical Power & Protection
RS Components now stocks Eaton’s complete Moeller series of compact DILMT contactors. Easy to integrate in a variety of industrial machines and systems, the contactors enable space savings of up to 40%, ...

Read more...
Power supplies for building automation
June 2020, Phoenix Contact , Electrical Power & Protection
The new Step Power power supplies from Phoenix Contact are specifically tailored to the needs of modern building automation. With their comprehensive approval package, which includes the standard ...

Read more...
Skid-mounted dry-type transformer
June 2020 , Electrical Power & Protection
In a specialised application on a coal mine, Trafo Power Solutions recently supplied a dry-type transformer mounted on a mobile skid. “The harsh environment of a coal mine required us to specially ...

Read more...
Customised transformers for renewables and beyond
June 2020 , Electrical Power & Protection
A focus on application engineering allows Trafo Power Solutions to supply customised dry-type transformers for a range of sectors including renewable energy. “We begin at the proposal stage by engaging ...

Read more...