100
DMX
3
24. 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 indi-
cator 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” (RTC) conditions
are not met
Check all RTC 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
Summary of Contents for 0 280 02
Page 1: ...DMX3 Mars 18 LE08437AC ...
Page 2: ......
Page 9: ...9 DMX3 5 Extraction couverture frontale Pour disjoncteurs fixes et débrochables ...
Page 33: ...33 DMX3 17 Bornier auxiliaire C B A A B C P Vdir PU2 PU1 ...
Page 51: ...DMX3 March 18 LE08437AC ...
Page 52: ......
Page 59: ...59 DMX3 5 Racking out frontal cover For fixed and draw out breakers ...
Page 83: ...83 DMX3 17 Auxiliary terminals block C B A A B C P Vdir PU2 PU1 ...
Page 101: ...101 DMX3 Note ...
Page 102: ...102 DMX3 Note ...
Page 103: ...103 DMX3 ...
Page 104: ...LE08437AC ...