GE P54C User Manual

5.21.1 CB TRIP CONVERSION LOGIC DIAGRAM
V03386
Trip Inputs A
1
R
Q
S
Trip Output A
Trip Inputs B
1
R
Q
S
Trip Output B
Trip Inputs C
1
R
Q
S
Trip Output C
Tripping Mode
3 Pole
1
1
AR Force 3 pole
Force 3Pole Trip
Trip Inputs 3Ph
&
1
R
Q
S
Trip 3ph
1
Any Trip
Dwell
100 ms
1
1
1
Pole Dead A
Pole Dead B
Pole Dead C
Trip Inputs A
Trip Inputs B
Trip Inputs C
&
&
&
1
&
R
Q
S
R
Q
S
2/3 Ph Fault
3 Ph Fault
≥
2
530
531
532
858
533
529
530
531
532
892
893
894
523
524
525
526
522
527
528
Figure 88: Circuit Breaker Trip Conversion Logic Diagram (Module 63)
5.22 MONITOR CHECKS FOR CB CLOSURE
For single-phase Autoreclose neither voltage nor synchronisation checks are needed as synchronising power
should be flowing in the tw
o 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.
P54A/B/C/E Chapter 7 - Autoreclose
P54xMED-TM-EN-1 173

GE P54C Specifications

General

Brand	GE
Model	P54C
Category	Relays
Language	English