Table 48. Three-phase overvoltage protection (PHPTOV) main settings
Parameter Function Value (Range) Step
Start value PHPTOV 0.05...1.60 × U
n
0.01
Time multiplier PHPTOV 0.05...15.00 0.01
Operate delay time PHPTOV 40...300000 ms 10
Operating curve type
1)
PHPTOV Definite or inverse time
Curve type: 5, 15, 17, 18, 19, 20
1) For further reference, see the Operation characteristics table
Table 49. Positive-sequence undervoltage protection (PSPTUV)
Characteristic
Value
Operation accuracy Depending on the frequency of the measured voltage: f
n
±2 Hz
±1.5% of the set value or ±0.002 × U
n
Start time
1)2)
Minimum Typical Maximum
U
Fault
= 0.99 × set
Start value
U
Fault
= 0.9 × set
Start value
52 ms
44 ms
55 ms
47 ms
58 ms
50 ms
Reset time Typically 40 ms
Reset ratio Depends on the set
Relative hysteresis
Retardation time <35 ms
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × f
n
, where n = 2, 3, 4, 5,…
1)
Start value
= 1.0 × U
n
, positive-sequence voltage before fault = 1.1 × U
n
, f
n
= 50 Hz, positive sequence undervoltage with nominal frequency injected from random phase angle, results based
on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Table 50. Positive-sequence undervoltage protection (PSPTUV) main settings
Parameter
Function Value (Range) Step
Start value PSPTUV 0.010...1.200 × U
n
0.001
Operate delay time PSPTUV 40...120000 ms 10
Voltage block value PSPTUV 0.01...1.00 × U
n
0.01
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