ABB Relion 650 series RET650 Product Manual page 56

Transformer protection RET650
Product version: 1.1
Table 32. Negative sequence based overcurrent function DNSPTOC
Function
Operate current
Reset ratio
Low voltage level for memory (0.0 - 5.0) % of UBase
Relay characteristic angle
Relay operate angle
Timers
Operate time, non-directional 30 ms typically at 0 to 2 x I
Reset time, non-directional
Operate time, directional
Reset time, directional
Critical impulse time
Impulse margin time
Dynamic overreach
56
Range or value
(2.0 - 5000.0) % of IBase
> 95 %
(-180 - 180) degrees
(1 - 90) degrees
(0.00 - 6000.00) s
20 ms typically at 0 to 10 x I
40 ms typically at 2 to 0 x I
30 ms typically at 0 to 2 x I
20 ms typically at 0 to 10 x I
40 ms typically at 2 to 0 x I
10 ms typically at 0 to 2 x I
2 ms typically at 0 to 10 x I
15 ms typically
< 10% at t = 300 ms
1MRK 504 127-BEN -
Issued: February 2011
Accuracy
± 1.0% of I at I <I
r r
± 1.0% of I at I > I
r
-
< ± 0,5% of U
r
± 2,0 degrees
± 2,0 degrees
± 0.5% ± 25 ms
-
set
set
-
set
-
set
set
-
set
-
set
set
-
-
ABB