Hitachi Relion REL670 Product Manual page 88

Line distance protection REL670
Version 2.2
Table 52. Automatic switch onto fault logic ZCVPSOF
Parameter
Operate voltage, detection of dead line
Operate current, detection of dead line
Time delay to operate for the switch
onto fault function
Time delay for UI detection
Delay time for activation of dead line
detection
Drop-off delay time of switch onto fault
function
88
M16043-1 v14
Range or value
(1–100)% of UBase
(1–100)% of IBase
(0.03-120.00) s
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
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Accuracy
±0.5% of U
r
±1.0% of I
r
±0.2% or ±30 ms whichever is greater
±0.2% or ±30 ms whichever is greater
±0.2% or ±30 ms whichever is greater
±0.2% or ±30 ms whichever is greater
1MRK 506 372-BEN Q
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