Reset Cb Lockout Logic Diagram; Pole Discrepancy; Figure 186: Reset Circuit Breaker Lockout Logic Diagram (Modules 57 & 58) - GE MiCOM P40 Technical Manual

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RESET CB LOCKOUT LOGIC DIAGRAM

Res LO by CB IS

Res LO by UI

Reset CB1 LO

Res LO by NoAR

Res LO by ExtDDB

Rst CB1 Lockout

Res LO by TDelay

LO Reset Time

CB1 AR Lockout

Res LO by CB IS

Res LO by UI

Reset CB2 LO

Res LO by NoAR

Res LO by ExtDDB

Rst CB2 Lockout

Res LO by TDelay

LO Reset Time

CB2 AR Lockout

Figure 186: Reset Circuit Breaker Lockout Logic Diagram (Modules 57 & 58)

In a three-pole CB, certain combinations of poles open and closed are indicative of a problem. The Pole

Discrepancy Logic combines an indication of a Pole Discrepancy condition from the CB Monitoring logic with

signals from the internal Autoreclose logic to produce a combined Pole Discrepancy indication for the CB.

P446SV-TM-EN-1

Chapter 11 - Autoreclose