Circuit-Breaker Failure Protection Ccbrbrf; Tripping Logic Trpptrc - ABB RELION 630 Series Applications Manual

1MRS756785 G
3.3.6.14
3.3.6.15
REM630
Application Manual
GUID-63612F53-F1C1-48E1-B940-DA878C64479A V1 EN
Figure 20: Negative-sequence overvoltage protection

Circuit-breaker failure protection CCBRBRF

The function is activated by the common operate command from the protection
functions. The breaker failure function issues a backup trip command to adjacent
circuit breakers in case the main circuit breaker fails to trip for the protected
component. The backup trip is connected at binary output PSM PO5.
A failure of a circuit breaker is detected by measuring the current or by detecting the
remaining trip signal. Function also provides retrip. Retrip is used along with the main
trip, and is activated before the backup trip signal is generated in case the main breaker
fails to open. Retrip is used to increase the operational reliability of the circuit breaker.

Tripping logic TRPPTRC

Tripping logic has been configured to provide tripping signal of required duration to
Master trip 1 and Master trip 2 circuit. The tripping circuit opens the circuit breaker on
• Receipt of operate signal from the protection function or
• Retrip signal from circuit breaker failure protection.
Section 3
REM630 variants
55