| Characteristic | Value | |||
|---|---|---|---|---|
| Operation accuracy | Depending on the frequency of the voltage measured: fn | |||
| ±1.5% of the set value or ±0.002 × Un | ||||
| Start time1, 2 |
UFault = 1.1 × set Start value UFault = 2.0 × set Start value |
Minimum | Typical | Maximum |
|
30 ms 20 ms |
41 ms 32 ms |
52 ms 43 ms |
||
| Reset time | Typically 40 ms | |||
| Reset ratio | Typically 0.96 | |||
| Retardation time | <45 ms | |||
| Operate time accuracy in definite time mode | ±1.0% of the set value or ±40 ms | |||
| Suppression of harmonics | DFT: -50 dB at f = n × fn, where n = 2, 3, 4, 5,… | |||
1 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
2 Includes the delay of the signal output contact