Megabreak® - Maintenance guide
M
ain
tenanc
e guide
69
5. Troubleshooting
Problem
Possible causes
Checkup & resolution
Notes
It’s not possible to
close the breaker
Reset button is not
resetted
Push the reset button
Selector for dielectric
test is in “DIELECTRIC
TEST POSITION”
Set the selector
on “NORMAL USE”
position
The mechanism is not
charged
Charge the springs
UVR not supplied
Check its power
supply circuit. If the
problem persists,
replace the UVR
Electrical interlock
Check the electrical
interlock
Shunt trip remains
energized
Check its power
supply circuit
Closing coils remains
energized
Check its power
supply circuit
Closing coil doesn’t
work
Check its power
supply circuit. Check
the fitting on breaker
seat. If the problem
persists, replace the
closing coil
Draw-out crank
inserted
Extract the crank
Wrong fitting of
contact RC-SC
Fit the accessory
properly
The breaker is not
completely inserted
inside the chassis
Insert properly the
breaker inside the
chassis
OPEN position Key
lock/Padlock is enabled
Disable the key lock/
Padlock
Mechanical interlock
enabled
Check the logic of
interlock
The spring of opening
pushbutton (O) is out
of seat
Get the spring on
correct position
NORMAL
USE
TRIP
DIELEC
TRIC
TEST POSITION
discharged
NORMAL
USE
TRIP
DIELEC
TRIC
TEST POSITION
discharged
Содержание Megabreak T803LE1250
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