Table 48. Automatic switch onto fault logic ZCVPSOF
Parameter Range or value Accuracy
Operate voltage, detection of dead line (1–100)% of
UBase
±0.5% of U
r
Operate current, detection of dead line (1–100)% of
IBase
±1.0% of I
r
Time delay to operate for the switch onto fault function (0.03-120.00) s ±0.2% or ±20 ms whichever is greater
Time delay for UI detection (0.000-60.000) s ±0.2% or ±20 ms whichever is greater
Delay time for activation of dead line detection (0.000-60.000) s ±0.2% or ±20 ms whichever is greater
Drop-off delay time of switch onto fault function (0.000-60.000) s ±0.2% or ±30 ms whichever is greater
1MRK 506 372-BEN -
Line distance protection REL670 2.2
Product version: 2.2
72 ABB
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