ABB Relion 670 Series Product Manual page 89

Line differential protection RED670 2.0
Product version: 2.0
Table 86. Three phase overcurrent LCP3PTOC
Function
Operate value, overcurrent
Reset ratio, overcurrent
Start time at 0 to 2 x I
set
Reset time at 2 to 0 x I
set
Critical impulse time, overcurrent
Impulse margin time, overcurrent
Independent time delay to operate at 0 to 2 x I
Table 87. Three phase undercurrent LCP3PTUC
Function
Operate value, undercurrent
Reset ratio, undercurrent
Start time at 2 to 0 x I
set
Reset time at 0 to 2 x I
set
Critical impulse time, undercurrent
Impulse margin time, undercurrent
Independent time delay to operate at 2 to 0 x I
ABB
Range or value
(5-2500)% of IBase
> 95% at (50-2500)% of IBase
Min. = 10 ms
Max. = 25 ms
Min. = 20 ms
Max. = 35 ms
5 ms typically at 0 to 2 x I
2 ms typically at 0 to 10 x I
10 ms typically
(0.000-60.000) s
set
Range or value
(1.00-100.00)% of IBase
< 105% at (50.00-100.00)% of IBase
Min. = 15 ms
Max. = 30 ms
Min. = 10 ms
Max. = 25 ms
10 ms typically at 2 to 0 x I
10 ms typically
(0.000-60.000) s
set
1MRK505310-BEN C
Accuracy
±1.0% of I
r
±1.0% of I at I > I
-
-
-
-
set
set
-
±0.2% or ±30 ms whichever is
greater
Accuracy
±1.0% of I
r
-
-
-
-
set
-
±0.2% or ±45 ms whichever is
greater
at I ≤ I
r
r
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