EARTH LEAKAGE RELAYS WITH TCS (TRIP CIRCUIT SUPERVISION)

A new function is available for Earth Leakage relays Type B and Type A-F that allows to constantly monitor the efficiency of the circuit breaker Trip circuit when is made of a shunt release coil.

The alarm contact (TCS Alarm) will be as positive safety (normally energized) and will be released after the programmed activation time delay in the following situations:

- Lack of device auxiliary supply (no delay, device off)

- When ELR is operating in measuring mode, in case of shunt release coil connection fault or in case of lack of the relevant auxiliary supply

- When ELR is operating in tripping mode, if the contacts (COM, NO) of the Trip Relay are not closed.

When normal operating conditions are restored, the Alarm Contact will be energized again after a programmable release time delay (or in manual mode with Memory setting).

Check out the Ordering Code for this new function in the Data Sheet of each type.