ABB Relion 670 series Product Manual page 48

Line distance protection REL670 ANSI
Pre-configured
Product version: 1.2
Table 31. Instantaneous residual overcurrent protection EFPIOC (50N)
Function
Operate current
Reset ratio
Operate time
Reset time
Critical impulse time
Operate time
Reset time
Critical impulse time
Dynamic overreach
48
Range or value
(1-2500)% of lBase
> 95%
25 ms typically at 0 to 2 x I
set
25 ms typically at 2 to 0 x I
set
10 ms typically at 0 to 2 x I
set
10 ms typically at 0 to 10 x I
set
35 ms typically at 10 to 0 x I
set
2 ms typically at 0 to 10 x I
set
< 5% at t = 100 ms
1MRK 506 317-BUS A
Accuracy
± 1.0% of I at I £ I
n n
± 1.0% of I at I > I
n
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ABB