Transient/Intermittent Earth-Fault Protection (Intrptef) - ABB REV615 Product Manual

Capacitor Bank Protection and Control
REV615
Product version: 5.0 FP1
Table 32. Directional earth-fault protection (DEFxPDEF) main settings
Parameter
Start value
Directional mode
Time multiplier
Operate delay time
1)
Operating curve type
Operation mode
1) For further reference, see the Operating characteristics table
Table 33. Transient/intermittent earth-fault protection (INTRPTEF)
Characteristic
Operation accuracy (Uo criteria with transient protection)
Operate time accuracy
Suppression of harmonics
Table 34. Transient/intermittent earth-fault protection (INTRPTEF) main settings
Parameter
Directional mode
Operate delay time
Voltage start value
Operation mode
Peak counter limit
Min operate current
30
Function
DEFLPDEF
DEFHPDEF
DEFLPDEF and DEFHPDEF
DEFLPDEF
DEFHPDEF
DEFLPDEF
DEFHPDEF
DEFLPDEF
DEFHPDEF
DEFxPDEF
Function
INTRPTEF
INTRPTEF
INTRPTEF
INTRPTEF
INTRPTEF
INTRPTEF
Value (Range)
0.010...5.000 × I
n
0.10...40.00 × I
n
1 = Non-directional
2 = Forward
3 = Reverse
0.05...15.00
0.05...15.00
50...200000 ms
40...200000 ms
Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19
Definite or inverse time
Curve type: 1, 3, 5, 15, 17
1 = Phase angle
2 = IoSin
3 = IoCos
4 = Phase angle 80
5 = Phase angle 88
Value
Depending on the frequency of the measured current: f
±1.5% of the set value or ±0.002 × Uo
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5
n
Value (Range)
1 = Non-directional
2 = Forward
3 = Reverse
40...1200000 ms
0.05...0.50 × U
n
1 = Intermittent EF
2 = Transient EF
2...20
0.01...1.00 × I
n
1MRS757952 D
Step
0.005
0.01
-
0.01
0.01
10
10
-
±2 Hz
n
Step
-
10
0.01
-
1
0.01
ABB