ABB Relion REC670, Product Manual

Page: 60 / 138

Current protection
M12336-1 v13
Table 35. Instantaneous phase overcurrent protection PHPIOC
Function Range or value 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 IBase -
Operate time at 0 to 2 x I
set
Min. = 15 ms
Max. = 25 ms -
Reset time at 2 x I
set
to 0 Min. = 15 ms
Max. = 25 ms -
Critical impulse time 10 ms typically at 0 to 2 x I
set
-
Operate time at 0 to 10 x I
set
Min. = 5 ms
Max. = 15 ms -
Reset time at 10 x I
set
to 0 Min. = 25 ms
Max. = 40 ms -
Critical impulse time 2 ms typically at 0 to 10 x I
set
-
Dynamic overreach < 5% at t = 100 ms -
1MRK 511 404-BEN A
Bay control REC670 2.2
Product version: 2.2.1
60 ABB