Hitachi Relion 670 Series Product Manual page 121

Line differential protection RED670
Version 2.2
Multipurpose protection
Table 85. General current and voltage protection CVGAPC
Function
Measuring current input
Measuring voltage input
Start overcurrent, step 1 - 2
Start undercurrent, step 1 - 2
Independent time delay, overcurrent at 0
to 2 x I , step 1 - 2
set
Independent time delay, undercurrent at
2 x I to 0, step 1 - 2
set
Overcurrent (non-directional):
Start time at 0 to 2 x I
set
Reset time at 2 x I to 0
set
Start time at 0 to 10 x I
set
Reset time at 10 x I to 0
set
Undercurrent:
Start time at 2 x I to 0
set
Reset time at 0 to 2 x I
set
Overcurrent:
Inverse time characteristics, see table
215, 217 and table 219
Overcurrent:
Minimum operate time for inverse curves,
step 1 - 2
Voltage level where voltage memory
takes over
Start overvoltage, step 1 - 2
Start undervoltage, step 1 - 2
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M13095-2 v11
Range or value
phase1, phase2, phase3, PosSeq, -
NegSeq, -3*ZeroSeq, MaxPh, MinPh,
UnbalancePh, phase1-phase2,
phase2-phase3, phase3-phase1,
MaxPh-Ph, MinPh-Ph, UnbalancePh-
Ph
phase1, phase2, phase3, PosSeq, -
NegSeq, -3*ZeroSeq, MaxPh, MinPh,
UnbalancePh, phase1-phase2,
phase2-phase3, phase3-phase1,
MaxPh-Ph, MinPh-Ph, UnbalancePh-
Ph
(2 - 5000)% of IBase
(2 - 150)% of IBase
(0.00 - 6000.00) s
(0.00 - 6000.00) s
Min. = 15 ms
Max. = 30 ms
Min. = 15 ms
Max. = 30 ms
Min. = 5 ms
Max. = 20 ms
Min. = 20 ms
Max. = 35 ms
Min. = 15 ms
Max. = 30 ms
Min. = 15 ms
Max. = 30 ms
16 curve types
(0.00 - 6000.00) s
(0.0 - 5.0)% of UBase
(2.0 - 200.0)% of UBase
(2.0 - 150.0)% of UBase
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Accuracy
-
-
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
±0.2% or ±35 ms whichever is greater
±0.2% or ±35 ms whichever is greater
-
-
-
-
-
-
See table 215, 217 and table
±0.2% or ±35 ms whichever is greater
±0.5% of U
r
±0.5% of U at U ≤ U
r r
±0.5% of U at U > U
r
±0.5% of U at U ≤ U
r r
±0.5% of U at U > U
r
1MRK 505 379-BEN R
219
121