ABB RER620 Technical Manual page 252

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