47
1) For further reference, see the Operation characteristics table
—
Table 45. Harmonics-based earth-fault protection (HAEFPTOC) main settings
Parameter Function Value (range) Step
Start value
HAEFPTOC
n
Time multiplier
HAEFPTOC
Operate delay time
HAEFPTOC
Operating curve type
HAEFPTOC
Definite or inverse time
Minimum operate time HAEFPTOC
—
Table 46. Negative-sequence overcurrent protection (NSPTOC)
Characteristic Value
Operation accuracy
Depending on the frequency of the measured current: f
n
n
Start time
Minimum Typical Maximum
I
Fault
I
Fault
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
n
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
1) For further reference, see the Operation characteristics table
—
Table 47. Negative-sequence overcurrent protection (NSPTOC) main settings
Parameter Function Value (range) Step
Start value
NSPTOC
n
Time multiplier
NSPTOC
Operate delay time
NSPTOC
Operating curve type
NSPTOC
Definite or inverse time
—
Table 48. Remnant undervoltage protection (MSVPR)
Characteristic Value
Operation accuracy
n
Pickup time
Minimum Typical Maximum
Reset time
Reset ratio Depends on the relative hysteresis setting
Retardation time
Trip time accuracy
Suppression of harmonics Operates only in RMS mode
1) Includes the delay of the signal output contact
2) Operate time delays do not account for variation due to pickup delay
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