Table 62. Admittance-based earth-fault protection (EFPADM)
Characteristic Value
Operation accuracy
1)
At the frequency f = f
n
±1.0% or ±0.01 mS
(In range of 0.5...100 mS)
Start time
2)
Minimum Typical Maximum
56 ms 60 ms 64 ms
Reset time 40 ms
Operate time accuracy ±1.0% of the set value of ±20 ms
Suppression of harmonics -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1) Uo = 1.0 × Un
2) Includes the delay of the signal output contact, results based on statistical distribution of 1000 measurements
Table 63. Admittance-based earth-fault protection (EFPADM) main settings
Parameter
Function Value (Range) Step
Voltage start value EFPADM 0.01...2.00 × U
n
0.01
Directional mode EFPADM 1 = Non-directional
2 = Forward
3 = Reverse
-
Operation mode EFPADM 1 = Yo
2 = Go
3 = Bo
4 = Yo, Go
5 = Yo, Bo
6 = Go, Bo
7 = Yo, Go, Bo
-
Operate delay time EFPADM 60...300000 ms 10
Circle radius EFPADM 0.05...500.00 mS 0.01
Circle conductance EFPADM -500.00...500.00 mS 0.01
Circle susceptance EFPADM -500.00...500.00 mS 0.01
Conductance forward EFPADM -500.00...500.00 mS 0.01
Conductance reverse EFPADM -500.00...500.00 mS 0.01
Susceptance forward EFPADM -500.00...500.00 mS 0.01
Susceptance reverse EFPADM -500.00...500.00 mS 0.01
Conductance tilt Ang EFPADM -30...30° 1
Susceptance tilt Ang EFPADM -30...30° 1
1MRS759144 A
To Next Page
Loading...
Need help?
General
