ABB REL650 Product Manual page 49

Line distance protection REL650 ANSI
Product version: 1.3
Table 33. Four step phase overcurrent protection, 3-phase output OC4PTOC (51/67)
Function
Operate current
Reset ratio
Min. operating current
2nd harmonic blocking
Independent time delay
Minimum operate time for inverse
characteristics
Inverse characteristics, see
table 89, table 90 and table 91
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
ABB
Setting range
lBase
(5-2500)% of
lBase
> 95% at (50–2500)% of
lBase
(5-10000)% of
(5–100)% of fundamental
(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 506 337-BUS B
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
± 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
-
-
-
-
-
-
49