Table 34. Three-phase overvoltage protection (PHPTOV)
Characteristic Value
Operation accuracy Depending on the frequency of the measured voltage: fn ±2 Hz
±1.5% of the set value or ±0.002 × Un
Start time
33, 34
UFault = 1.1 × set Start value Minimum Typical Maximum
23 ms 27 ms 31 ms
Reset time Typically 40 ms
Reset ratio Depends on the set Relative hysteresis
Retardation time <35 ms
Operate time accuracy in denite time mode ±1.0% of the set value or ±20 ms
Operate time accuracy in inverse time mode ±5.0% of the theoretical value or ±20 ms
35
Suppression of harmonics DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,…
Table 35. Three-phase overvoltage protection (PHPTOV) main settings
Parameter Function Value (Range) Step
Start value PHPTOV 0.05...1.60 × Un 0.01
Time multiplier PHPTOV 0.05...15.00 0.01
Operate delay time PHPTOV 40...300000 ms 10
Operating curve type42 PHPTOV Denite or inverse time
Curve type: 5, 15, 17, 18, 19, 20
Table 36. Positive-sequence undervoltage protection (PSPTUV)
Characteristic Value
Operation accuracy Depending on the frequency of the measured voltage: fn ±2 Hz
±1.5% of the set value or ±0.002 × Un
Start time
36,
37
UFault = 0.99 × set Start value
UFault = 0.9 × set Start value
Minimum Typical Maximum
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 denite time mode ±1.0% of the set value or ±20 ms
Suppression of harmonics DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,…
Table 37. Positive-sequence undervoltage protection (PSPTUV) main settings
Parameter Function Value (Range) Step
Start value PSPTUV 0.010...1.200 × Un 0.001
Operate delay time PSPTUV 40...120000 ms 10
Voltage block value PSPTUV 0.01...1.00 × Un 0.01
Table 38. Negative-sequence overvoltage protection (NSPTOV)
Characteristic Value
Operation accuracy Depending on the frequency of the measured voltage: fn ±2 Hz
±1.5% of the set value or ±0.002 × Un
Start time
38, 39
UFault= 1.1 × set Start value
UFault = 2.0 × set Start value
Minimum Typical Maximum
33 ms
24 ms
35 ms
26 ms
37 ms
28 ms
33 Start value = 1.0 × Un, Voltage before fault = 0.9 × Un, fn = 50 Hz, overvoltage in one phase-to-phase with nominal frequency injected from random phase angle, results based on
statistical distribution of 1000 measurements
34 Includes the delay of the signal output contact
35 Maximum Start value = 1.20 × Un, Start value multiples in range of 1.10...2.00
36 Start value = 1.0 × Un, positive-sequence voltage before fault = 1.1 × Un, fn = 50 Hz, positive sequence undervoltage with nominal frequency injected from random phase angle, results
based on statistical distribution of 1000 measurements
37 Includes the delay of the signal output contact
38 Negative-sequence voltage before fault = 0.0 × Un, fn = 50 Hz, negative-sequence overvoltage with nominal frequency injected from random phase angle, results based on statistical
distribution of 1000 measurements
39 Includes the delay of the signal output contact
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