ABB REF615 ANSI 5.0 FP1 Product Manual page 45

—
Table 38. Admittance-based earth-fault protection (EFPADM)
Characteristic
Operation accuracy
Start time 1) 2)
Reset time
Operate time accuracy i
Suppression of harmonics
1) Uo = 1.0 × U
n
2) Includes the delay of the signal output contact, results based on statistical distribution of 1000 measurements
—
Table 39. Admittance-based earth-fault protection (EFPADM) main settings
Parameter
Voltage start value
Directional mode
Operation mode
Operate delay time
Circle radius
Circle conductance
Circle susceptance
Conductance forward
Conductance reverse
Susceptance forward
Susceptance reverse
Conductance tilt Ang
Susceptance tilt Ang
—
Table 40. Wattmetric-based earth-fault protection (WPWDE)
Characteristic
Operation accuracy
Start time
1), 2)
Reset time
Reset ratio
Operate time accuracy in definite time mode
Operate time accuracy in IDMT mode
Suppression of harmonics
1) Io varied during the test, Uo = 1.0 × U
results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Value
At the frequency f = f
n
±1.0% or ±0.01 mS
(In range of 0.5...100 mS)
Minimum
56 ms
40 ms
±1.0% of the set value or ±20 ms
-50 dB at f = n × fn, where n = 2, 3, 4, 5,...
Function
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
= phase to earth voltage during earth fault in compensated or un-earthed network, the residual power value before fault = 0.0 pu, f
n
Typical
60 ms
Value (range)
0.01...2.00 × U
n
1 = Non-directional
2 = Forward
3 = Reverse
1 = Yo
2 = Go
3 = Bo
4 = Yo, Go
5 = Yo, Bo
6 = Go, Bo
7 = Yo, Go, Bo
60...200000 ms
0.05...500.00 mS
-500.00...500.00 mS
-500.00...500.00 mS
-500.00...500.00 mS
-500.00...500.00 mS
-500.00...500.00 mS
-500.00...500.00 mS
-30...30°
-30...30°
Value
Depending on the frequency of the measured current: f
Current and voltage:
±1.5% of the set value or ±0.002 × I
Power:
±3% of the set value or ±0.002 × P
Typically 63 ms
Typically 40 ms
Typically 0.96
±1.0% of the set value or ±20 ms
±5.0% of the set value or ±20 ms
-50 dB at f = n × fn, where n = 2,3,4,5,...
Maximum
64 ms
Step
0.01
-
-
10
0.01
0.01
0.01
0.01
0.01
0.01
0.01
1
1
±2 Hz
n
n
n
45
= 50 Hz,
n