Admittance-Based Earth-Fault Protection (Efpadm); Admittance-Based Earth-Fault Protection (Efpadm) Main Settings - ABB REX640 Product Manual

REX640
Product version: 1
Table 62. Admittance-based earth-fault protection (EFPADM)
Characteristic
Operation accuracy 1)
2)
Start time
Reset time
Operate time accuracy
Suppression of harmonics
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
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
ABB
Function
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
EFPADM
Value
At the frequency f = f
n
±1.0% or ±0.01 mS
(In range of 0.5...100 mS)
Minimum Typical
56 ms 60 ms
40 ms
±1.0% of the set value of ±20 ms
-50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
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...300000 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°
1MRS759144 A
Maximum
64 ms
Step
0.01
-
-
10
0.01
0.01
0.01
0.01
0.01
0.01
0.01
1
1
49