ABB Relion 650 Series Product Manual page 28

Busbar protection REB650
Version 1.1 ANSI
Impedance protection
Current protection
Table 22. Four step phase overcurrent protection OC4PTOC (51/67)
Function
Operate current
Reset ratio
Min. operating current
Independent time delay
Minimum operate time for
inverse characteristics
Inverse characteristics, see
table 52, table 53 and table 54
Operate time, nondirectional
pickup function
Reset time, pickup function
Operate time, directional
pickup function
Reset time, directional pickup
funciton
Critical impulse time
Impulse margin time
28
Setting range
(5-2500)% of lBase
> 95%
lBase
(1-10000)% of
(0.000-60.000) s
(0.000-60.000) s
17 curve types
20 ms typically at 0 to 2 x I
set
30 ms typically at 2 to 0 x I
set
30 ms typically at 0 to 2 x I
set
25 ms typically at 2 to 0 x I
set
10 ms typically at 0 to 2 x I
set
15 ms typically
© Copyright 2011 ABB Power Grids. All rights reserved
M12342-1 v7
1MRK 505 265-BUS B
IP11400-1 v1
Accuracy
± 1.0% of I at I ≤ I
n n
± 1.0% of I at I > I
n
-
± 1.0% of I at I ≤ I
n n
±1.0% of I at I > I
n
± 0.5% ±25 ms
± 0.5% ±25 ms
See table 52, table 53 and table
54
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ABB Power Grids