116
DMX
3
25. Basic trouble shooting
Situation Probability Solution
ACB does not close on
pressing “ON” button
U/V release is present but
not energized
Energize U/V release
Mechanism spring is not charged
Charge the mechanism spring
manually till the spring status
indicator turns yellow
Reset button ejected Press reset button
Mechanical Interlock disables
closing
Re check before trying
to close the breaker
Breaker can not be driven in
Test and Service position
Breaker & Miss insertion device
ratings do not match
Put correct breaker
ACB does not close electrically
“Ready to close” (RC)
conditions
are not met
Check all RC conditions
ACB trips after closing
Overload fault exists if tripping
is after several seconds or
minutes.
Other fault(s) exist if tripping is
within a second
Check the unit protection and
identify the fault then clear
the cause
Shunt Release is getting
command continuously
Check the source of command
To Next Page
Loading...
Need help?
General
