ABB RELION 670 Series Technical Manual page 523

Generator protection
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1MRK 502 066-UUS B
Function
Trip level for non-
directional residual
overvoltage
Residual release current for
all directional modes
Residual release voltage for
all directional modes
Trip time for non-
directional residual
overcurrent at 0 to 2 x Iset
Reset time for non-
directional residual
overcurrent at 2 to 0 x Iset
Trip time for directional
residual overcurrent at 0 to
2 x Iset
Reset time for directional
residual overcurrent at 2 to
0 x Iset
Independent time delay for
non-directional residual
overvoltage at 0.8 to 1.2 x
Vset
Independent time delay for
non-directional residual
overcurrent at 0 to 2 x Iset
Independent time delay for
directional residual
overcurrent at 0 to 2 x Iset
Inverse characteristics, see
table 1079, table
table
1081
Relay characteristic angle
(RCADir)
Relay operate angle
(ROADir)
8.7
Thermal overload protection, two time constants
TRPTTR (49)
Technical manual
Range or value
(1.00-200.00)% of
(0.25-200.00)% of
(1.00-300.00)% of
Min. = 40 ms
Max. = 65 ms
Min. = 40 ms
Max. = 65 ms
Min. = 110 ms
Max. = 160 ms
Min. = 20 ms
Max. = 60 ms
(0.000 – 60.000) s
(0.000 – 60.000) s
(0.000 – 60.000) s
16 curve types
1080
and
(-179 to 180) degrees
(0 to 90) degrees
VBase
lBase
VBase
Current protection
Accuracy
±0.5% of V
at V £ V
n
n
±0.5% of V at V > V
n
±1.0% of I
at I £ I
n
n
±1.0% of I at I > I
n
±0.5% of V
at V £ V
n
n
±0.5% of V at V > V
n
±0.2% or ± 75 ms whichever is
greater
±0.2% or ± 75 ms whichever is
greater
±0.2% or ± 170 ms whichever is
greater
See table 1079, table
1080
and
table
1081
±2.0 degrees
±2.0 degrees
Section 8
IP14513-1 v4
517

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