Circuit Breaker Open Logic Diagram; Circuit Breaker In Service Logic; Figure 150: Circuit Breaker Open Logic Diagram (Module 3) - GE MiCOM P40 Technical Manual

P446SV
5.2.1

CIRCUIT BREAKER OPEN LOGIC DIAGRAM

CB1 Open A ph
CB1 Open B ph
CB1 Open C ph
CB1 Open 3 ph
CB2 Open A ph
CB2 Open B ph
CB2 Open C ph
CB2 Open 3 ph
V03390

Figure 150: Circuit Breaker Open logic diagram (Module 3)

5.3

CIRCUIT BREAKER IN SERVICE LOGIC

For Autoreclose to proceed, a circuit breaker has to be in service when the Autoreclose is initiated. A circuit breaker
is considered to be in service if it has been closed for more than the CB IS Time setting.
For applications with fast-acting circuit breaker auxiliary switches, a time delay setting CB IS Memory Time is
provided. This is used to ensure correct operation if a delay between the circuit breaker tripping and recognition by
the protection, is expected.
When an Autoreclose cycle starts, the "in service" signal for a circuit breaker stays set until the Autoreclose cycle
finishes.
The circuit breaker "in service" signal resets if the circuit breaker opens, or if the corresponding Autoreclose in
progress (ARIP) signal resets.
P446SV-TM-EN-1
904
905
906
903
³2
912
913
914
911
³2
1
1
1
1
1
1
Chapter 11 - Autoreclose
CB1Op1P
CB1OpAny
CB1 Op2/3P
CB2Op1P
CB2OpAny
CB2 Op2/3P
291