ABB REG650 - Page 40

Table 25. 1Ph High impedance differential protection HZPDIF
Function Range or value Accuracy
Operate voltage (20-400) V
I=U/R
± 1.0% of I
r
Reset ratio >95% -
Maximum continuous power
U>Trip
2
/SeriesResistor ≤200 W
-
Operate time 10 ms typically at 0 to 10 x U
d
-
Reset time 100 ms typically at 10 to 0 x U
d
-
Critical impulse time 2 ms typically at 0 to 10 x U
d
-
Table 26. Generator differential protection GENPDIF
Function
Range or value Accuracy
Unrestrained differential current limit (1-50)p.u. of IBase ± 1.0% of set value
Reset ratio > 90% -
Base sensitivity function (0.10–1.00)p.u. of IBase ± 1.0% of I
r
Negative sequence current level (0.02–0.4)p.u. of IBase ± 1.0% of I
r
Operate time, restrained function 40 ms typically at 0 to 2 x
set level
-
Reset time, restrained function 40 ms typically at 2 to 0 x
set level
-
Operate time, unrestrained function 20 ms typically at 0 to 5 x
set level
-
Reset time, unrestrained function 40 ms typically at 5 to 0 x
set level
-
Operate time, negative sequence
unrestrained function
15 ms typically at 0 to 5 x
set level
-
Critical impulse time, unrestrained function 3 ms typically at 0 to 5 x
set level
-
Generator protection REG650
1MRK 502 050-BEN B
Product version: 1.3
40 ABB