Residual Overvoltage Protection Main Settings - ABB REG615 Product Manual

Generator and Interconnection Protection
REG615
Product version: 5.0 FP1
Table 42. Negative-sequence overcurrent protection for machines (MNSPTOC) main settings
Parameter
Start value
Operating curve type
Operate delay time
Operation
Cooling time
Table 43. Residual overvoltage protection (ROVPTOV)
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Suppression of harmonics
1) Residual voltage before fault = 0.0 × U
measurements
2) Includes the delay of the signal output contact
Table 44. Residual overvoltage protection (ROVPTOV) main settings
Parameter
Start value
Operate delay time
ABB
Function
MNSPTOC
MNSPTOC
MNSPTOC
MNSPTOC
MNSPTOC
U = 2 × set Start value
Fault
, f = 50 Hz, residual voltage with nominal frequency injected from random phase angle, results based on statistical distribution of 1000
n n
Function
ROVPTOV
ROVPTOV
Value (Range)
0.01...0.50 × I
n
Definite or inverse time
Curve type: 5, 15, 17, 18
100...120000 ms
1 = on
5 = off
5...7200 s
Value
Depending on the frequency of the measured voltage: f
±1.5% of the set value or ±0.002 × U
Minimum Typical
48 ms 51 ms
Typically 40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
DFT: -50 dB at f = n × f , where n = 2, 3, 4, 5,...
n
Value (Range)
0.010...1.000 × U
n
40...300000 ms
1MRS758279 B
Step
0.01
10
-
1
±2 Hz
n
n
Maximum
54 ms
Step
0.001
1
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