ABB Relion 670 series - Setting parameters; Technical data

Table 484: LCP3PTOC (51) Output signals
Name Type Description
TRIP BOOLEAN Common trip signal
TR_A BOOLEAN Trip signal from phase A
TR_B BOOLEAN Trip signal from phase B
TR_C BOOLEAN Trip signal from phase C
RI BOOLEAN Common start signal
PU_A BOOLEAN Pickup signal from phase A
PU_B BOOLEAN Pickup signal from phase B
BFI_C BOOLEAN Pickup signal from phase C
13.8.10.5 Setting parameters
Table 485: LCP3PTOC (51) Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Operation Enable / Disable
IBase 0 - 99999 A 1 3000 Base setting for current in A
PU 51 5 - 2500 %IB 1 1000 Start value for 3 phase over current in % IBase
tOC 0.000 - 60.000 s 0.001 0.020 Time delay to operate
13.8.10.6 Technical data
Table 486: LCP3PTOC (51) technical data
Function
Range or value Accuracy
Operate value,
overcurrent
(5-2500)% of IBase ± 1.0% of Ir at I < I
n
± 1.0% of I at I > I
n
Reset ratio, overcurrent >95% -
Operate time, start 20 ms typically at 0 to 2xI
set
15 ms typically at 0 to 10xI
set
-
Reset time, start 30 ms typically at 2 to 0xI
set
-
Critical impulse time,
overcurrent
5 ms typically at 0 to 2xI
set
2 ms typically at 0 to 10xI
set
-
Impulse margin time,
overcurrent
10 ms typically -
Timers (0.000-60.000) s ± 0.5% ± 10 ms
Section 13 1MRK505222-UUS C
Scheme communication
854
Technical reference manual