Npsoc Directional Parameters - GE MiCOM P40 Agile Technical Manual

P543i/P545i
3.12.1

NPSOC DIRECTIONAL PARAMETERS

Directional boundary pick-up (RCA +/-90%)
Directional boundary hysteresis
Directional boundary repeatability
3.13 CIRCUIT BREAKER FAIL AND UNDERCURRENT PROTECTION
I< Pick-up
I< Drop-off
Operate time
Timers
Reset time
3.14 BROKEN CONDUCTOR PROTECTION
Pick-up
Drop-off
DT operate
Reset time
3.15 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.
P54x1i-TM-EN-1
Chapter 27 - Technical Specifications
+/-2°
< 1°
< 1%
Setting +/- 10% or 0.025 In, whichever is greater
Setting +/- 5% or 20 mA, whichever is greater
< 12 ms
+/- 2% or 20 ms, whichever is greater
< 15 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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