Monitoring, Control And Supervision; Voltage Transformer Supervision; Standard Current Transformer Supervision; Differential Current Transformer Supervision - GE P4A Technical Manual

Chapter 22 - Technical Specifications
4

MONITORING, CONTROL AND SUPERVISION

4.1

VOLTAGE TRANSFORMER SUPERVISION

Fast block operation
Fast block reset
Time delay
4.2

STANDARD CURRENT TRANSFORMER SUPERVISION

IN> Pick-up
VN< Pick-up
IN> Drop-off
VN< Drop-off
Time delay operation
CTS block operation
CTS reset
4.3

DIFFERENTIAL CURRENT TRANSFORMER SUPERVISION

I1> Pick-up
I1> Drop-off
I2/I1> Pick-up
I2/I1> Drop-off
I2/I1>> Pick-up
I2/I1 >> Drop-off
Time delay operation
CTS block diff operation
CTS reset
4.4

CB STATE AND CONDITION MONITORING

Timers
Broken current accuracy
Reset time
516
< 1 cycle
< 1.5 cycles
+/- 2% or 20 ms, whichever is greater
Setting +/- 5%
Setting +/- 5%
0.9 x setting +/- 5%
1.05 x setting +/-5% or 1 V, whichever is greater
Setting +/-2% or 20 ms, whichever is greater
< 1 cycle
< 35 ms
Accuracy
Setting +/- 5%
0.9 x setting +/- 5%
Setting +/- 5%
0.9 x setting +/-5%
Setting +/- 5%
0.9 x setting +/-5%
Setting +/-2% or 20 ms, whichever is greater
< 1 cycle
< 35 ms
Accuracy
+/- 40 ms or 2%, whichever is greater
+/- 5%
< 30 ms
P54A/B/C/E
P54xMED-TM-EN-1