Transient Overreach And Overshoot - GE MiCOM P40 Agile Technical Manual

P543i/P545i
3.8.1

TRANSIENT OVERREACH AND OVERSHOOT

Additional tolerance due to increasing X/R ratios
Overshoot of overcurrent elements
3.8.2 PHASE OVERCURRENT DIRECTIONAL PARAMETERS
Directional boundary pickup (RCA +/-90%)
Directional boundary hysteresis
Directional boundary repeatability
3.9 EARTH FAULT PROTECTION
IDMT pick-up
DT pick-up
Drop-off (IDMT and DT)
IDMT Operate
IEEE reset
Repeatability
DT operate
DT reset
Note:
Reference conditions: TMS = 1, TD = 1, IN> = 1A, operating range = 2-20In.
3.9.1 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
P54x1i-TM-EN-1
+/-5% over the X/R ratio of 1 to 90
< 30 ms
Accuracy
+/-2°
< 2°
<2%
Accuracy
1.05 x Setting +/-5%
Setting +/-5%, or 20 mA, whichever is greater
0.95 x setting +/-5%
+/-5% or 40 ms, whichever is greater*
+/-10% or 40 ms, whichever is greater
< 5%
+/-2% or 50 ms, whichever is greater
+/- 5% or 50 ms, whichever is greater
Zero Sequence Polarising accuracy
+/-2°
<3°
Setting+/-10%
0.9 x Setting +/-10%
Negative Sequence Polarising accuracy
+/-2°
<3°
Setting+/-10%
0.9 x Setting +/-10%
Setting+/-10%
0.9 x Setting +/-10%
Chapter 27 - Technical Specifications
725