ABB ret650, Technical Manual

Page: 158 / 670

8.2.9 Technical data
Table 78: OC4PTOC technical data
Function Setting range Accuracy
Operate current (5-2500)% of
lBase
± 1.0% of I
r
at I ≤ I
r
±
1.0% of I at I > I
r
Reset ratio > 95% at (50–2500)% of lBase -
Min. operating current (5-10000)% of
lBase
±
1.0% of I
r
at I ≤ I
r
± 1.0% of I at I > I
r
2nd harmonic blocking (5–100)% of fundamental
±
2.0% of I
r
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 559 , table 560 and table
561
15 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
start function
25 ms typically at 0 to 2 x I
set
-
Reset time, nondirectional start
function
35 ms typically at 2 to 0 x I
set
-
Operate time, directional start
function
50 ms typically at 0 to 2 x I
set
-
Reset time, directional start
function
35 ms typically at 2 to 0 x I
set
-
Critical impulse time 10 ms typically at 0 to 2 x I
set
-
Impulse margin time 15 ms typically -
1) Note: Timing accuracy only valid when 2nd harmonic blocking is turned off
8.3 Instantaneous residual overcurrent protection
EFPIOC
8.3.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Instantaneous residual overcurrent
protection
EFPIOC
IN>>
IEF V1 EN
50N
Section 8
1MRK 504 135-UEN A
Current protection
152
Technical manual