ABB Relion 670 Series Product Manual page 98

Generator protection REG670
Version 2.2
Multipurpose protection
Table 80. 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
182, 183 and table 184
Overcurrent:
Minimum operate time for inverse
curves, step 1 - 2
Voltage level where voltage memory
takes over
Start overvoltage, step 1 - 2
98
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
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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 182, 183 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
1MRK 502 074-BEN M
184
Hitachi Power Grids