Table 79. Voltage differential protection VDCPTOV , continued
Function
Range or value
Accuracy
Independent time delay for voltage differential
reset at 1.2 x UDTrip to 0.8 x UDTrip
(0.000–60.000)s
±0.2% or ±40 ms whichever is greater
SEMOD175210-2 v7
Table 80. Loss of voltage check LOVPTUV
Function
Range or value
Accuracy
Operate voltage
(1–100)% of UBase
±0.5% of U
r
Pulse timer when disconnecting all three
phases
(0.050–60.000) s
±0.2% or ±15 ms whichever is greater
Time delay for enabling the functions after
restoration
(0.000–60.000) s
±0.2% or ±35 ms whichever is greater
Operate time delay when disconnecting all
three phases
(0.000–60.000) s
±0.2% or ±35 ms whichever is greater
Time delay to block when all three phase
voltages are not low
(0.000–60.000) s
±0.2% or ±35 ms whichever is greater
GUID-C172D5EB-51E8-4FC9-B2E7-EF976872FD7E v6
Table 81. Radial feeder protection PAPGAPC
Function
Range or value
Accuracy
Residual current detection
(10 - 150)% of IBase
±1.0% of Ir at I ≤ Ir
±1.0% of I at I > Ir
Reset ratio
>95% at (50 - 150)% of
IBase
-
Operate time, residual current detection at 0
to 2 x I
set
Min. = 15 ms
-
Max. = 30 ms
Independent time delay to operate, residual
current detection at 0 to 2 x I
set
(0.000 - 60.000) s
±0.2% or ±40 ms whichever is greater
Voltage based phase selection
(30 - 100)% of UBase
±1.0% of U
r
Reset ratio
<115%
-
Operate time, voltage-based phase selection
at 1.2 x U
set
to 0.8 x U
set
Min. = 15 ms
-
Max. = 30 ms
Independent time delay to operate, voltage-
based phase selection at 1.2 x U
set
to 0.8 x
U
set
(0.000 – 60.000) s
±0.2% or ±40 ms whichever is greater
Line differential protection RED670
1MRK 505 379-BEN R
Version 2.2
116
Hitachi Energy
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