GE MiCOM P40 Agile - Circuit Breaker Fail Logic

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4.2 CIRCUIT BREAKER FAIL LOGIC - PART 2

TripStateExt A

V00730

External Trip A

IA<FastUndercurrent

Ext Prot Reset

I< Only

Prot Reset OR I<

Prot Reset & I<

CB Open & I<

Rst OR CBOp & I<

Latch ATripResetIncomp

Pole Dead A

Logic 0

Figure 209: Circuit Breaker Fail logic - part 2

Note:

This diagram shows only phase-A for a single-CB device. The diagrams for phases B and C follow the same principle and are

not repeated here.

Chapter 12 - CB Fail Protection P543i/P545i

358 P54x1i-TM-EN-1

GE MiCOM P40 Agile - Circuit Breaker Fail Logic - Part 2