Circuit Breaker Trip Time Monitoring; Figure 182: Cb2 Control Logic (Module 44) - GE MiCOM P40 Technical Manual

P446SV
CB Control by
Opto
Opto+Local
Opto+Remote
Opto+Rem+Local
HMI Trip
441
Init Trip CB2
442
Init close CB2
HMI Close
1435
CB2 ARIP
1448
Auto Close CB2
1419
Rst CB2 CloseDly
522
Any Trip
840
Control TripCB2
538
CB2 Ext Trip3ph
539
CB2 Ext Trip A
540
CB2 Ext Trip B
541
CB2 Ext Trip C
911
CB2 Open 3 ph
912
CB2 Open A ph
913
CB2 Open B ph
914
CB2 Open C ph
915
CB2 Closed 3 ph
916
CB2 Closed A ph
917
CB2 Closed B ph
918
CB2 Closed C ph
437
CB2 Healthy
1458
CB2 Man SCOK
V03344

Figure 182: CB2 Control Logic (Module 44)

5.18

CIRCUIT BREAKER TRIP TIME MONITORING

The circuit breaker trip time monitoring logic checks for correct circuit breaker tripping following the issue of a
protection trip signal. When the protection trip signal is issued, a timer controlled by the Trip Pulse Time setting in
the CB CONTROL column is started.
If the circuit breaker trips correctly the timer resets. If Autoreclose is enabled and the timer resets, the cycle
continues. If the circuit breaker fails to trip correctly within the set time, the Autoreclose cycle is forced to lock out
and a signal is issued indicating that the circuit breaker failed to trip in response to the protection operation.
P446SV-TM-EN-1
1
1
&
&
&
1
&
S
RD
1
1
1
1
&
1
1
Note: If the DDB signal CB 1 Healthy, or CB2 healthy is not mapped in PSL , it defaults to
High.
Trip Pulse Time
t
S
Q
0
RD
Man Close Delay
t
Q
0 &
1
S
RD
1
CB Healthy Time
t
&
0
Check Sync Time
t
&
0
Chapter 11 - Autoreclose
840
Control TripCB2
324
& CB2 Trip Fail
Close Pulse Time
1453
CB2 Close inProg
841
Control CloseCB2
t
Q
0
325
& CB2 Close Fail
1
326
ManCB2 Unhealthy
327
NoCS CB2ManClose
323