ABB REG670 Product Manual page 78

Generator protection REG670 2.2 and Injection equipment REX060,
REX061, REX062
Product version: 2.2.1
Table 66. Generator rotor overload protection GRPTTR
Function
Overcurrent start level for overload
protection
Reset ratio, overcurrent
Start time, overcurrent at 0 to 2 x I
Thermal time characteristic
Minimum operate time for thermal
characteristic
Maximum operate time for thermal
characteristic
Undercurrent start level
Start time, undercurrent at 2 x I
0
Independent time delay for
undercurrent function at 2 x I
78
GUID-A1CB5B4F-768E-4B1B-937E-B91EC3EFA2CC v4
Range or value
(105.0–900.0)% of IBase
>95%
Min = 50 ms
set
Max = 170 ms
According to
IEEE Std C50.13–2005
(1.0–120.0) s
(100.0–2000.0) s
(5.0–500.0)% of IBase
to Min = 15 ms
set
Max = 30 ms
(0.0–600.0) s
to 0
set
Accuracy
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
—
—
±1.5% or ±200 ms whichever is greater
±1.5% or ±200 ms whichever is greater
±1.5% or ±200 ms whichever is greater
±1.0% of I at I ≤ I
r r
±1.0% of I at I > I
r
—
±0.2% or ±45 ms whichever is greater
1MRK 502 074-BEN A
ABB