ABB REX640 - Wattmetric-Based Earth-Fault Protection (WPWDE) Main Settings; Transient;Intermittent Earth-Fault Protection (INTRPTEF); Transient;Intermittent Earth-Fault Protection (INTRPTEF) Main Settings

Table 67. Wattmetric-based earth-fault protection (WPWDE) main settings
Parameter Function Value (Range) Step
Directional mode WPWDE 2 = Forward
3 = Reverse
-
Current start value WPWDE 0.010...5.000 × I
n
0.001
Voltage start value WPWDE 0.010...1.000 × U
n
0.001
Power start value WPWDE 0.003...1.000 × S
n
0.001
Reference power WPWDE 0.050...1.000 × S
n
0.001
Characteristic angle WPWDE -179...180° 1
Time multiplier WPWDE 0.025...2.000 0.005
Operating curve type
1)
WPWDE Definite or inverse time
Curve type: 5, 15, 20
Operate delay time WPWDE 60...300000 ms 10
Min operate current WPWDE 0.010...1.000 × I
n
0.001
Min operate voltage WPWDE 0.01...1.00 × U
n
0.01
1) For further reference, see the Operating characteristics table
Table 68. Transient/intermittent earth-fault protection (INTRPTEF)
Characteristic
Value
Operation accuracy (Uo criteria with transient protection) Depending on the frequency of the measured current: f
n
±2 Hz
±1.5% of the set value or ±0.002 × Uo
Operate time accuracy ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5
Table 69. Transient/intermittent earth-fault protection (INTRPTEF) main settings
Parameter
Function Value (Range) Step
Directional mode INTRPTEF 1 = Non-directional
2 = Forward
3 = Reverse
-
Operate delay time INTRPTEF 40...1200000 ms 10
Voltage start value INTRPTEF 0.05...0.50 × U
n
0.01
Operation mode INTRPTEF 1 = Intermittent EF
2 = Transient EF
-
Peak counter limit INTRPTEF 2...20 1
Min operate current INTRPTEF 0.01...1.00 × I
n
0.01
1MRS759144 A
REX640
Product version: 1
ABB 51