Circuit breaker failure protection relay
7SV600 Siemens Energy

SIPROTEC 7SV600 is a numerical relay used for circuit-breaker failure protection. It is suitable for use at all voltage levels and in all applications.

Protection functions
* Circuit-breaker failure protection (single or three-pole with/without current)
* Independently settable delay times for operation with and without current
* Single or two-stage time delay of the busbar trip command
* Re-trip (cross trip) stage (1st stage of the 2-stage operation)
* Intertrip facility (via teleprotection interface)
* End-fault protection with intertrip
* "No current" control using the circuit-breaker auxiliary contacts

Features
* Highly sensitive current detection
* 2-out-of-4 check of the current detectors
* Short reset time, negligible overshoot time
* Can be initiated by phase-segregated or common-phase trip commands
* End-fault protection
* Assignable output relays, LEDs and binary inputs

Monitoring functions
* Monitoring of circuit-breaker auxiliary contacts
* Operational current measured values
* Self-supervision of the relay
* Event buffer
* Fault protocols
* Oscillographic fault recording