ABB Relion 670 Series Product Manual page 41

Busbar protection REB670
Customized
Product version: 1.2
Differential protection
Table 23. Busbar differential protection
Function
Operating characteristic
Reset ratio
Differential current operating level
Sensitive differential operation
level
Check zone operation level
Check zone slope
Timers
Timers
Operate time
Reset time
Critical impulse time
ABB
Range or value
S=0.53 fixed
> 95%
(1-100000) A
(1-100000) A
(0-100000) A
(0.0-0.9)
(0.000-60.000) s
(0.00-6000.00) s
19 ms typically at 0 to 2 x I
d
12 ms typically at 0 to 10 x I
d
21 ms typically at 2 to 0 x I
d
29 ms typically at 10 to 0 x I
d
8 ms typically at 0 to 2 x I
d
Accuracy
± 2.0% of I for I < I
r r
± 2.0% of I for I > I
r
-
± 2.0% of I for I < I
r r
± 2.0% of I for I > I
r
± 2.0% of I for I < I
r r
± 2.0% of I for I < I
r
± 2.0% of I for I < I
r r
± 2.0% of I for I > I
r
-
± 0.5% ± 10 ms
± 0.5% ± 10 ms
-
-
-
1MRK505273-BEN D
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