ABB REQ650 - Page 68

Table 32. Breaker failure protection, 3-phase activation and output CCRBRF
Function Range or value Accuracy
Operate phase current (5-200)% of lBase ± 1.0% of I
r
at I £ I
r
± 1.0% of I at I > I
r
Reset ratio, phase current > 95% -
Operate residual current (2-200)% of lBase ± 1.0% of I
r
at I £ I
r
± 1.0% of I at I > I
r
Reset ratio, residual current > 95% -
Phase current level for blocking of
contact function
(5-200)% of lBase ± 1.0% of I
r
at I £ I
r
± 1.0% of I at I > I
r
Reset ratio > 95% -
Timers (0.000-60.000) s ± 0.5% ±10 ms
Operate time for current detection 35 ms typically -
Reset time for current detection 10 ms maximum -
Table 33. Breaker failure protection, phase segregated activation and output CSPRBRF
Function Range or value Accuracy
Operate phase current (5-200)% of lBase ± 1.0% of I
r
at I £ I
r
± 1.0% of I at I > I
r
Reset ratio, phase current > 95% -
Operate residual current (2-200)% of lBase ± 1.0% of I
r
at I £ I
r
± 1.0% of I at I > I
r
Reset ratio, residual current > 95% -
Phase current level for blocking of
contact function
(5-200)% of lBase ± 1.0% of I
r
at I £ I
r
± 1.0% of I at I > I
r
Reset ratio > 95% -
Timers (0.000-60.000) s ± 0.5% ±10 ms
Operate time for current detection 35 ms typically -
Reset time for current detection 10 ms maximum -
Breaker protection REQ650 1MRK 505 283-BEN -
Product version: 1.2
68 ABB