ABB RELION 630 Series Product Manual page 30

Generator Protection and Control
REG630
Product version: 1.3
Table 37. Non-directional earth-fault protection (EFxPTOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
1)
Operating curve type
1) For further reference, see the Operation characteristics table
Table 38. Directional earth-fault protection (DEFxPDEF)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
1) Set Operate delay time = 0.06 s, Operate curve type = IEC definite time, Measurement mode = default (depends on stage), current before fault = 0.0 × I
nominal frequency injected from random phase angle, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
3) Maximum Start value = 2.5 × I , Start value multiples in range of 1.5 to 20
n
30
Function
EFLPTOC
EFHPTOC
EFIPTOC
EFLPTOC
EFHPTOC
EFLPTOC
EFHPTOC
EFIPTOC
EFLPTOC
EFHPTOC
EFIPTOC
DEFLPDEF
DEFHPDEF
DEFHPDEF and DEFLPTDEF:
Start value
I = 2 × set
Fault
Value (Range)
0.010...5.000 pu
0.10...40.00 pu
0.10...40.00 pu
0.05...15.00
0.05...15.00
0.04...200.00 s
0.02...200.00 s
0.02...200.00 s
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, 9, 10, 12, 15, 17
Definite time
Value
At the frequency f = f
n
Current:
±1.5% of the set value or ±0.002 × I
Voltage
±1.5% of the set value or ±0.002 × U
Phase angle: ±2°
Current:
±1.5% of the set value or ±0.002 × I
(at currents in the range of 0.1...10 × I
±5.0% of the set value
(at currents in the range of 10...40 × I
Voltage:
±1.5% of the set value or ±0.002 × U
Phase angle: ±2°
Typically 54 ms (±15 ms)
Typically 40 ms
Typically 0.96
<30 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
RMS: No suppression
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Peak-to-Peak: No suppression
1MRS757583 C
Step
0.005
0.01
0.01
0.01
0.01
0.01
0.01
0.01
n
n
n
)
n
)
n
n
3)
, f = 50 Hz, earth-fault current with
n n
ABB