ABB REL670 - Testing IED Functions and Performance; IED Test Modes and Overview

Table 52. Instantaneous residual overcurrent protection EFPIOC
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 lBase -
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. = 35 ms
-
Critical impulse time 2 ms typically at 0 to 10 x I
set
-
Dynamic overreach
< 5% at t = 100 ms
-
1MRK 506 372-BEN -
Line distance protection REL670 2.2
Product version: 2.2
ABB 75