GUID-C4ACE306-2A54-483D-B247-A479D48CBF5F v5
Table 108. Three phase overcurrent LCP3PTOC
Function
Range or value
Accuracy
Operate value, overcurrent
(5-2500)% of IBase
±1.0% of I
r
at I ≤ I
r
±1.0% of I at I > I
r
Reset ratio, overcurrent
> 95% at (50-2500)% of IBase
-
Start time at 0 to 2 x I
set
Min. = 10 ms
Max. = 25 ms
-
Reset time at 2 x I
set
to 0
Min. = 20 ms
Max. = 35 ms
-
Critical impulse time, overcurrent
3 ms typically at 0 to 2 x I
set
1 ms typically at 0 to 10 x I
set
-
Impulse margin time, overcurrent
10 ms typically
-
Independent time delay to operate at 0 to 2 x
I
set
(0.000-60.000) s
±0.2% or ±30 ms whichever is greater
GUID-CE2C6F0A-DF49-4AAF-80F0-9CDCBB08E755 v5
Table 109. Three phase undercurrent LCP3PTUC
Function
Range or value
Accuracy
Operate value, undercurrent
(1.00-100.00)% of IBase
±1.0% of I
r
Reset ratio, undercurrent
< 105% at (50.00-100.00)% of
IBase
-
Start time at 2 x I
set
to 0
Min. = 15 ms
Max. = 30 ms
-
Reset time at 0 to 2 x I
set
Min. = 10 ms
Max. = 25 ms
-
Critical impulse time, undercurrent
10 ms typically at 2 x I
set
to 0
-
Impulse margin time, undercurrent
10 ms typically
-
Independent time delay to operate at 2 x I
set
to
0
(0.000-60.000) s
±0.2% or ±45 ms whichever is greater
Line differential protection RED670
1MRK 505 379-BEN R
Version 2.2
Hitachi Energy
133
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Содержание Relion 670 Series
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