Table 46. Phase discontinuity protection (PDNSPTOC)
Operation accuracy Depending on the frequency of the current
measured: fn ±2Hz
±2% of the set value
Start time < 70 ms
Reset time < 40 ms
Reset ratio Typical 0.96
Retardation time < 35 ms
Operate time accuracy in definite
time mode
±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50dB at f = n x fn, where n = 2, 3, 4, 5,…
Table 45. Negative phase-sequence current protection (NSPTOC) main settings
Parameter Function Value (Range) Step
Start value NSPTOC 0.01...5.00 x I
n
0.01
Time multiplier NSPTOC 0.05...15.00 0.05
Operate delay time NSPTOC 40...200000 ms 10
Operating curve type
1)
NSPTOC Definite or inverse time
Curve type: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
11, 12, 13, 14, 15, 17, 18, 19
1) For further reference please refer to the Operating characteristics table at the end of the Technical data chapter
Table 47. Phase discontinuity protection (PDNSPTOC) main settings
Parameter Function Value (Range) Step
Start value
(Current ratio setting I
2
/I
1
)
PDNSPTOC 10...100 % 1
Operate delay time PDNSPTOC 100...30000 ms 1
Min phase current PDNSPTOC 0.05...0.30 x In 0.01
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