ABB SPER 1B1 C4 Trip circuit supervision relay Numerical Relay

ABB TRIP CIRCUIT SUPERVISION RELAY SPER 1B1 C4 CONTINUOUS MONITORING OF CIRCUIT-BREAKER TRIP CIRCUITS AND OTHER ESSENTIAL CONTROL CIRCUITS

The trip circuit supervision relay ABB SPER 1B1 C4 is used for supervising important control circuits such as circuit-breaker and disconnector control circuits and signaling circuits in power electrical installations. Generally one supervision relay is needed per circuit to be supervised. If several branches of a circuit are to be supervised, the required number of relays can be connected to the same control circuit.

The SPER 1B1 C4 is composed of a standard 11-pin plug-in relay unit and a corresponding terminal socket for rail-mounting. ABB trip circuit supervision relays are also available in COMBIFLEX design, please see products SPER 1C1 and SPER 1C2. Scope Relay for man or backup circuit supervision Product benefits Immediate information about faults Product features Continuous monitoring of circuit-breaker trip circuits and other essential control circuits Preset operate time preventing unwanted alarm signals at circuit-breaker operation Indication of relay operation with LED indicator on the front panel and output relay Detects bad contact, contact welding and auxiliary voltage failures in the supervised circuit

SPER series supervision relays are used for monitoring important control circuits such as circuit breaker and disconnector control circuits, signaling circuits, etc., in power installations. One contact circuit is monitored by one relay. If several branches of a circuit are to be monitored, the required number of relays can be connected
to the same control circuit.

The supervision relay detects interruptions, too high resistances caused by galvanically bad connections, increased transfer resistance in the contacts, welding of the control contact, disappearing control voltage and voltage failures
in the relay itself. The relay is available in three versions: two COMBIFLEX versions with different supply voltage ranges, to be mounted in a rack, and one version provided with a base to be mounted on a rail or on a plane surface.