ABB REF615 ANSI 5.0 FP1 Product Manual page 47

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Table 45. Harmonics-based earth-fault protection (HAEFPTOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
Operating curve type
1)
Minimum operate time
1) For further reference, see the Operation characteristics table
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Table 46. Negative-sequence overcurrent protection (NSPTOC)
Characteristic
Operation accuracy
Start time
1) 2)
I = 2 x set Start value
Fault
I = 10 x set Start value
Fault
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
1) Negative sequence current before fault = 0.0, fn = 50 Hz, results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
3) Maximum Start value = 2.5 × In, Start value multiples in range of 1.5...20
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Table 47. Negative-sequence overcurrent protection (NSPTOC) main settings
Parameter
Start value
Time multiplier
Operate delay time
Operating curve type
1)
1) For further reference, see the Operation characteristics table
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Table 48. Remnant undervoltage protection (MSVPR)
Characteristic
Operation accuracy
Pickup time
1)
Reset time
Reset ratio
Retardation time
Trip time accuracy
Suppression of harmonics
1) Includes the delay of the signal output contact
2) Operate time delays do not account for variation due to pickup delay
Function
HAEFPTOC
HAEFPTOC
HAEFPTOC
HAEFPTOC
HAEFPTOC
Value
Depending on the frequency of the measured current: f
±1.5% of the set value or ±0.002 x I
Minimum
23 ms
15 ms
Typically 40 ms
Typically 0.96
< 35 ms
±1.0% of the set value or ±20 ms
±5.0% of the theoretical value or ±20 ms
DFT: -50dB at f = n x f
Function
NSPTOC
NSPTOC
NSPTOC
NSPTOC
Value
±4% of setting or ±0.01 x V
±10% of setting (20 Hz > = f ≥ 10 Hz)
Minimum
30 ms
< 180 ms
Depends on the relative hysteresis setting
< 45 ms
±1.0% of the set value or ±20 ms
Operates only in RMS mode
Value (range)
0.05...5.00 × I
n
0.05...15.00
100...200000 ms
Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19
100...200000 ms
n
Typical
26 ms
18 ms
3)
, where n = 2, 3, 4, 5,...
n
Value (range)
0.01...5.00 × I
n
0.05...15.00
40...200000 ms
Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19
(70 Hz > = f > 20 Hz)
n
Typical
75 ms
Step
0.01
0.01
10
10
±2 Hz
n
Maximum
28 ms
20 ms
Step
0.01
0.01
10
Maximum
140 ms
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