Hitachi Relion 670 Series Product Manual page 116

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