ABB RER620

Section 4 1MAC309294-MB F
Protection functions
246 RER620
Technical Manual
Figure 115: Functional module diagram, for three phase breaker close failure
function when three phase operation mode is selected
START
BLOCK
t
Timer 1
CLS_RET
CB_ FAULT
POS_CLOSE
Start
logic
Close
retry
logic
START
BLOCK
&
Timer start
Timer 1 elapsed
Set
Reset
or
POS_CLOSE
&
TON
150 ms
START
LOGIC
Timer 1 elapsed
BLOCK
&
CLS_RET
CB_ FAULT
&
POS_CLOSE
RETRY LOGIC