BS EN 50123-7-3:2003

This standard BS EN 50123-7-3:2003 Railway applications. Fixed installations. d.c. switchgear. Measurement, control and protection devices for specific use in d.c. traction systems is classified in these ICS categories:

• 29.280 Electric traction equipment
• 17.220.20 Measurement of electrical and magnetic quantities

This European Standard gives the requirements for isolating voltage transducers and other voltage measuring devices used in d.c. railway applications, fixed installations.

This transducer is normally positioned between the voltage sensor on the live switchboard conductor or rail and the secondary device, giving galvanic insulation between the input and the output.