Technical Data - ABB REL650 series Technical Manual

Section 7
Current protection
7.4.8
7.5
212
(51_67) can be blocked from the binary input BLOCK. The binary input BLKx (x=1, 2, 3
or 4) blocks the operation of respective step.

Technical data

Table 96: OC4SPTOC (51_67) technical data
Function
Operate current
Reset ratio
Min. operating current
Independent time delay
Minimum operate time for
inverse characteristics
Inverse characteristics, see
table 656, table 657 and table
658
Operate time, nondirectional
pickup function
Reset time, pickup function
Operate time, directional pickup
function
Reset time, directional pickup
function
Critical impulse time
Impulse margin time
1)
Note: Timing accuracy only valid when 2nd harmonic blocking is turned off.
Instantaneous residual overcurrent protection EFPIOC
(50N)
Setting range
lBase
(5-2500)% of
> 95%
lBase
(5-10000)% of
(0.000-60.000) s
(0.000-60.000) s
15 curve types
25 ms typically at 0 to 2 x I
set
35 ms typically at 2 to 0 x I
set
50 ms typically at 0 to 2 x I
set
35 ms typically at 2 to 0 x I
set
10 ms typically at 0 to 2 x I
set
15 ms typically
1MRK 506 335-UUS A
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 ±1.0% of I at I
n n
> I
n
± 0.5% ± 25 ms
± 0.5% ± 25 ms
1)
ANSI/IEEE C37.112
IEC 60255–151
±3% or ±40 ms
0.10 ≤ k ≤ 3.00
1.5 x I ≤ I ≤ 20 x I
set set
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-
-
-
-
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Technical manual