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

Chapter 23 - Technical Specifications
3.5

SENSITIVE EARTH FAULT PROTECTION

IDMT pick-up
DT Pick-up
Drop-off (IDMT + DT)
IDMT operate
DT operate
DT reset
Repeatability
Note:
Reference conditions: TMS = 1, TD = 1, IN> setting = 1 A with operating range of 2-20In.
3.5.1

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
Pick-up
Drop-off
Repeatability
Pick-up
Drop-off
Repeatability
3.6

RESTRICTED EARTH FAULT PROTECTION

Pick-up
Drop-off
Operating time
High set pick-up
High set operating time
Repeatability
538
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%
+/- 5%
Wattmetric SEF accuracy
SEF CosΦ accuracy
SEF SinΦ accuracy
High Impedance and Low Impedance
Setting formula +/- 5%
0.8 x Setting formula +/-5%
< 60 ms
Setting +/- 10%
< 30 ms
< 15%
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%
Setting +/-5% for angles RCA+/-60°
0.9 x setting
+/- 2%
Setting +/-5% for angles RCA+/-60° to RCA+/-90°
0.9 x setting
+/- 2%
P14x
P14xEd1-TM-EN-1