Negative Sequence Overcurrent Protection; Npsoc Directional Parameters; Circuit Breaker Fail And Undercurrent Protection; Broken Conductor Protection - GE MiCOM P40 Agile Technical Manual

P14x
3.7

NEGATIVE SEQUENCE OVERCURRENT PROTECTION

IDMT pick-up
DT pick-up
Drop-off (IDMT + DT)
IDMT operate
DT operate
DT Reset
3.7.1

NPSOC DIRECTIONAL PARAMETERS

Directional boundary pick-up (RCA +/-90%)
Directional boundary hysteresis
Directional boundary repeatability
3.8

CIRCUIT BREAKER FAIL AND UNDERCURRENT PROTECTION

I< Pick-up
I< Drop-off
Timers
Reset time
3.9

BROKEN CONDUCTOR PROTECTION

Pick-up
Drop-off
DT operate
Reset time
3.10

THERMAL OVERLOAD PROTECTION

Thermal alarm pick-up
Thermal overload pick-up
Cooling time accuracy
Repeatability
Note:
Operating time measured with applied current of 20% above thermal setting.
P14xEd1-TM-EN-1
Chapter 23 - Technical Specifications
1.05 x Setting +/-5%
Setting +/- 5%
0.95 x Setting +/-5%
+/- 5% or 40 ms, whichever is greater
+/- 2% or 60 ms, whichever is greater
Setting +/- 5%
+/-2°
< 2°
< 2%
Setting +/- 5% or 20 mA, whichever is greater
100% of setting +/- 5% or 20 mA, whichever is greater
+/- 2% or 50 ms, whichever is greater
< 35 ms
Setting +/- 2.5%
0.95 x Setting +/- 2.5%
+/- 2% or 40 ms, whichever is greater
<25 ms
Calculated trip time +/- 10%
Calculated trip time +/- 10%
+/- 15% of theoretical
<5%
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