ABB REB650, Technical Manual

Page: 88 / 504

a
b
a>b
OR
|I
OP
|
STx
TRx
AND
Pickupx
BLKSTx
BLOCK
Characteristx=DefTime
DirModeSelx=Disabled
DirModeSelx=Non-directional
DirModeSelx=Forward
DirModeSelx=Reverse
AND
AND
FORWARD_Int
REVERSE_Int
OR
OR STAGEx_DIR_Int
ANSI12000008-1-en.vsd
AND
AND
Characteristx=Inverse
Inverse
ANSI12000008-1-en.vsd
0
0-tx
0
0-txMin
ANSI12000008 V1 EN
Figure 34: Simplified logic diagram for OC4PTOC
7.1.8 Technical data
Table 33: OC4PTOC (51/67) technical data
Function Setting range Accuracy
Operate current (5-2500)% of
lBase
± 1.0% of I
n
at I ≤ I
n
±
1.0% of I at I > I
n
Reset ratio > 95% -
Min. operating current (1-10000)% of
lBase
± 1.0% of I
n
at I ≤ I
n
±
1.0% of I at I > I
n
2nd harmonic blocking (5–100)% of fundamental ± 2.0% of I
n
Independent time delay (0.000-60.000) s ± 0.5% ± 25 ms
Minimum operate time for
inverse characteristics
(0.000-60.000) s
±
0.5%
±
25 ms
Inverse characteristics, see
table 404 , table 405 and table
406
17 curve types
1)
ANSI/IEEE C37.112
IEC 60255–151
±
3% or
±
40 ms
0.10 ≤ k ≤ 3.00
1.5 x I
set
≤ I ≤ 20 x I
set
Operate time, nondirectional
pickup function
25 ms typically at 0 to 2 x I
set
-
Reset time, pickup function 30 ms typically at 2 to 0 x I
set
-
Operate time, directional pickup
function
50 ms typically at 0 to 2 x I
set
-
Table continues on next page
Section 7
1MRK 505 277-UUS C
Current protection
82
Technical Manual