Technical Data - ABB REB650 Technical Manual

Section 7
Current protection
7.1.8
82
|I |
OP
Pickupx
BLKSTx
BLOCK
DirModeSelx=Disabled
DirModeSelx=Non-directional
DirModeSelx=Forward
DirModeSelx=Reverse
ANSI12000008 V1 EN
Figure 34: Simplified logic diagram for OC4PTOC

Technical data

Table 33: OC4PTOC (51/67) technical data
Function
Operate current
Reset ratio
Min. operating current
2nd harmonic blocking
Independent time delay
Minimum operate time for
inverse characteristics
Inverse characteristics, see
table 404, table 405 and table
406
Operate time, nondirectional
pickup function
Reset time, pickup function
Operate time, directional pickup
function
Table continues on next page
Characteristx=DefTime
a
a>b
b
AND
Characteristx=Inverse
STAGEx_DIR_Int
OR
AND
OR
FORWARD_Int
AND
REVERSE_Int
Setting range
(5-2500)% of lBase
> 95%
(1-10000)% of lBase
(5–100)% of fundamental
(0.000-60.000) s
(0.000-60.000) s
17 curve types
25 ms typically at 0 to 2 x I
30 ms typically at 2 to 0 x I
50 ms typically at 0 to 2 x I
1MRK 505 277-UUS C
AND
0-tx
OR
0
0-txMin
AND
0
Inverse
ANSI12000008-1-en.vsd
ANSI12000008-1-en.vsd
Accuracy
± 1.0% of I at I ≤ I
n
± 1.0% of I at I > I
-
± 1.0% of I at I ≤ I
n
±1.0% of I at I > I
± 2.0% of 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
-
set
-
set
Technical Manual
STx
n
n
n
n
set