Oc4Ptoc - ABB REQ650 Product Manual

ABB
Breaker protection REQ650 ANSI
Product version: 1.1
Table 23. Four step phase overcurrent protection OC4PTOC (51/67)
Function
Operate current
Reset ratio
Min. operating current
Independent time delay
Minimum operate time
for inverse characteristics
Inverse characteristics,
see table 69, table 70 and
table 71
Operate time,
nondirectional pickup
function
Reset time, pickup
function
Operate time, directional
pickup function
Reset time, directional
pickup funciton
Critical impulse time
Impulse margin time
Setting range
(5-2500)% of lBase
> 95%
(1-10000)% of lBase
(0.000-60.000) s
(0.000-60.000) s
17 curve types
20 ms typically at 0 to 2 x I
30 ms typically at 2 to 0 x I
30 ms typically at 0 to 2 x I
25 ms typically at 2 to 0 x I
10 ms typically at 0 to 2 x I
15 ms typically
1MRK 505 269-BUS -
Issued: April 2011
Accuracy
± 1.0% of I
± 1.0% of I at I > I
-
± 1.0% of I
±1.0% of I at I > I
± 0.5% ±25 ms
± 0.5% ±25ms
See table 69, table
table 71
-
set
-
set
-
set
-
set
-
set
-
at I ≤ I
n n
n
at I ≤ I
n n
n
70 and
55