Earth Fault Directional Parameters; Sensitive Earth Fault Protection; Sef Directional Parameters - GE MiCOM P40 Agile Technical Manual

P14D
3.2.1

EARTH FAULT DIRECTIONAL PARAMETERS

Directional boundary pick-up (RCA +/- 90°)
Hysteresis
VN> pick-up
VN> drop-off
Directional boundary pick-up (RCA +/- 90°)
Hysteresis
VN2> pick-up
VN2> drop-off
IN2> pick-up
IN2> drop-off
3.3

SENSITIVE EARTH FAULT PROTECTION

IDMT pick-up
DT Pick-up
Drop-off (IDMT + DT)
IDMT operate
Disengagement
DT operate
DT reset
Repeatability
Note:
SEF claims apply to SEF input currents of no more than 2 x In. For input ranges above 2 x In, the claim is not supported.
3.3.1

SEF DIRECTIONAL PARAMETERS

Pick-up for P = 0 W
Pick-up for P > 0 W
Drop-off for P = 0 W
Drop-off for P > 0 W
Boundary accuracy
Repeatability
P14D-TM-EN-8
Zero Sequence Polarising accuracy
Negative Sequence Polarising accuracy
1.05 x Setting +/-5%
Setting +/- 5%
0.95 x Setting +/-5%
+/- 2% or 70 ms, whichever is greater (1.05 - <2) Is
+/- 2% or 50 ms, whichever is greater (2 - 20) Is
< 40 ms
+/- 2% or 70 ms, whichever is greater (1.05 - <2) Is
+/- 2% or 50 ms, whichever is greater (2 - 20) Is
Setting +/- 5%
+/- 5%
Wattmetric SEF accuracy
Chapter 22 - Technical Specifications
+/-2°
<3°
Setting+/-10%
0.9 x Setting +/-10%
+/-2°
<3°
Setting+/-10%
0.9 x Setting +/-10%
Setting+/-10%
0.9 x Setting +/-10%
ISEF > +/-5% or 5 mA
P > +/-5%
0.95 x ISEF> +/- 5% or 5 mA
0.9 x P> +/- 5% or 5 mA
+/-5% with hysteresis < 1°
+/- 5%
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