Figure 203: Circuit Breaker Trip Conversion Logic Diagram (Module 63) - GE MiCOM P40 Agile Technical Manual

Single breaker current differential (with distance)

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CB TRIP CONVERSION LOGIC DIAGRAM

Trip Inputs A

Trip Inputs B

Trip Inputs C

Tripping Mode

AR Force 3 pole

Force 3Pole Trip

Trip Inputs 3Ph

Trip Inputs A

Trip Inputs B

Trip Inputs C

Figure 203: Circuit Breaker Trip Conversion Logic Diagram (Module 63)

MONITOR CHECKS FOR CB CLOSURE

For single-phase Autoreclose neither voltage nor synchronisation checks are needed as synchronising power

should be flowing in the two healthy phases. For three-phase Autorelcose, for the first shot (and only the first shot),

you can choose to attempt reclosure without performing a synchronisation check. The setting to permit

Autoreclose without checking synchronising conditions is CB SC Shot 1.

Otherwise, synchronising checks on voltages, relative frequencies, and relative phase angles are needed to ensure

that sympathetic conditions exist before CB closure is attempted.

The following diagrams detail the Monitor Checks for CB closure.

P54x1i-TM-EN-1

Chapter 11 - Autoreclose

Trip Output A

Trip Output B

Trip Output C

2/3 Ph Fault

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