ABB RET670 - Page 77

Multipurpose protection
Table 66. General current and voltage protection CVGAPC
Function Range or value Accuracy
Measuring current input phase1, phase2, phase3, PosSeq, -
NegSeq, -3*ZeroSeq, MaxPh, MinPh,
UnbalancePh, phase1-phase2, phase2-
phase3, phase3-phase1, MaxPh-Ph,
MinPh-Ph, UnbalancePh-Ph
-
Measuring voltage input phase1, phase2, phase3, PosSeq, -
NegSeq, -3*ZeroSeq, MaxPh, MinPh,
UnbalancePh, phase1-phase2, phase2-
phase3, phase3-phase1, MaxPh-Ph,
MinPh-Ph, UnbalancePh-Ph
-
Start overcurrent, step 1 - 2 (2 - 5000)% of IBase ±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
Start undercurrent, step 1 - 2 (2 - 150)% of IBase ±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
Independent time delay, overcurrent at 0 to 2 x I
set
, step 1 - 2 (0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Independent time delay, undercurrent at 2 to 0 x I
set
, step 1 - 2 (0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Overcurrent (non-directional):
Start time at 0 to 2 x I
set
Min. = 15 ms
Max. = 30 ms
-
Reset time at 2 to 0 x I
set
Min. = 15 ms
Max. = 30 ms
-
Start time at 0 to 10 x I
set
Min. = 5 ms
Max. = 20 ms
-
Reset time at 10 to 0 x I
set
Min. = 20 ms
Max. = 35 ms
-
Undercurrent:
Start time at 2 to 0 x I
set
Min. = 15 ms
Max. = 30 ms
-
Reset time at 0 to 2 x I
set
Min. = 15 ms
Max. = 30 ms
-
Overcurrent:
Inverse time characteristics, see table 117, 118 and table "" 16 curve types See table 117, 118 and table ""
Overcurrent:
Minimum operate time for inverse curves, step 1 - 2 (0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Voltage level where voltage memory takes over (0.0 - 5.0)% of UBase ±0.5% of U
r
Start overvoltage, step 1 - 2 (2.0 - 200.0)% of UBase ±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Start undervoltage, step 1 - 2 (2.0 - 150.0)% of UBase ±0.5% of U
r
at U ≤ U
r
±0.5% of U at U > U
r
Independent time delay, overvoltage at 0.8 to 1.2 x U
set
, step 1 - 2 (0.00 - 6000.00) s ±0.2% or ±35 ms whichever is
greater
Transformer protection RET670 2.0
1MRK 504 141-BEN C
Product version: 2.0
ABB 77