LEGRAND LE06499AE, Instructions For Installation, Use And Maintenance Manual

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8.2 Guide for trouble-shooting
Pos. Problem Possible reason Corrective action
1 Overtemperature of a single winding
Load is not distributed uniformly
Check the position of the
connection on the tappings
Faulty temperature sensors or
temperature control device
Replace the faulty piece. Check
the connections between the
probe box and the control units
/ possible presence of false
contacts between the individual
connection cables
2 General overheating High ambient temperature
Possible damaged fans. Clean
possible openings of the room
or of the box which have been
blocked Check as per paragraph
5.4
3 Overheating in the core
Eddy currents in the magnetic core,
due to a damage on the insulation of
the ties
Contact Technical Assistance
service After Sales.
4
Abnormal noise Primary voltage too high
Verify that the voltage on the
off-load secondary windings is
lower or equal to the one written
on the rating plate. Check as per
paragraph 6.4
Abnormal noise
Rigid connection with the Busbar.
Rigid connection with the floor. Bolts
of tie rods the lens nucleus.
Insert flexible connections
between transformer and Busbar.
Insert anti-vibration pads under
the rollers. Tighten loose bolts of
tie rods.
5
Intervention of the alarm and tripping
relay of the temperature control
device, due to overtemperature
Faulty temperature sensors or
temperature control device
Replace the faulty piece
Load current higher than the nominal
value on the rating plate / high
content of harmonics in the load
current.
Reduce the load in order to have
the nominal rated current or
install the air circulation system
Difficult or not enough ventilation air
flow
Check as per paragraph 5.4
Possible poor electrical contact of the
temperature sensors
Check, clean and tighten all
contacts of the sensors
6
Untimely intervention of the electrical
system protections due to transformer
insertion
The setting of the HV circuit breaker
for the CRT insertion current is too low
Modify the protection setting
paying attention to the H2 control
(second harmonic)
8.3 Customer Care
For any information or spare parts do not hesitate to get in contact with our customer service. Call +39 030 2017100 or
send a mail to : service-edm@bticino.it . Do not forget the serial number of your transformer.