ABB REG630 - 40. Third harmonic based stator earth-fault protection

Table 39. Directional earth-fault protection (DEFxPDEF) main settings
Parameter Function Value (Range) Step
Start Value DEFLPDEF 0.010...5.000 pu 0.005
DEFHPDEF 0.10...40.00 pu 0.01
Directional mode DEFLPDEF and DEFHPDEF 1=Non-directional
2=Forward
3=Reverse
Time multiplier DEFLPDEF 0.05...15.00 0.01
DEFHPDEF 0.05...15.00 0.01
Operate delay time DEFLPDEF 0.06...200.00 s 0.01
DEFHPDEF 0.06...200.00 s 0.01
Operating curve type
1)
DEFLPDEF Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19
DEFHPDEF Definite or inverse time
Curve type: 1, 3, 5, 15, 17
Operation mode DEFLPDEF and DEFHPDEF 1=Phase angle
2=IoSin
3=IoCos
4=Phase angle 80
5=Phase angle 88
1) For further reference, refer to the Operation characteristics table
Table 40. Third harmonic based stator earth-fault protection (H3EFPSEF)
Characteristic
Value
Operation accuracy At the frequency f = f
n
±5% of the set value or ±0.004 × U
n
Start time
1)2)
Typically 23 ms (±15 ms)
Reset time <45 ms
Reset ratio Typically 0.96
Operate time accuracy in definite time mode ±1.0% of the set value of ±20 ms
1) f
n
= 50 Hz, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Table 41. Third harmonic based stator earth-fault protection (H3EFPSEF) main settings
Parameter
Function Value (Range) Step
Beta H3EFPSEF 0.50...10.00 0.01
Voltage N 3.H Lim H3EFPSEF 0.005...0.200 0.001
Operate delay time H3EFPSEF 0.08...300.00 s 0.01
Voltage selection H3EFPSEF No Voltage
Measured ResU
Calculated ResU
Phase A
Phase B
Phase C
-
CB open factor H3EFPSEF 1.00...10.00 0.01
Generator Protection and Control
1MRS757583 C
REG630
Product version: 1.3
ABB 31