INSTALLATION, USE AND MAINTENANCE MANUAL
EN
28
29
INSTALLATION, USE AND MAINTENANCE MANUAL
EN
B
owers Electricals Ltd, Heanor Gate Road, Heanor, Derbyshire DE75 7GX
Telephone: 01773 531531 (24 hours) Fax: 01773 716171
E-mail:
www.bowerselec.co.uk
B
owers Electricals Ltd, Heanor Gate Road, Heanor, Derbyshire DE75 7GX
Telephone: 01773 531531 (24 hours) Fax: 01773 716171
E-mail:
www.bowerselec.co.uk
4. Check the correct
functioning of the
thermal protection
(thermal sensors
and controller),
proper intervention
of the overloading
and short-circuit
protection and trip-
ping of the corre-
sponding automatic
switch
This check
should be
carried out
preferably
by means
of suitable
equipment
that allows
simulating a
real damage
Every 6 month
and after
exceptional
events
Simulation of
alarm and trip
5. Tightening of the
upper spacer
Torque
wrench
Yearly and after
exceptional
events
Consult Para-
graph 6.7
6. Tightening of me-
chanical parts and
fixing to the floor
Torque
wrench
Yearly and after
exceptional
events
Consult Para-
graph 6.7
7. Measurement of
the windings
insu-lation
Megger
(Mega-Ohm-
meter)
After a long
stop period
Consult Para-
graph 6.10
Table 9 –Periodic maintenance procedures
10.2 – MAINTENANCE PRIOR TO RE-ENERGIZING
If the transformer is operated in a discontinuous way, before re-energizing,
especially after a long stop, it is necessary to perform all the checks prior to
commissioning listed in Paragraph 6. If during the operation the transformer
withstood exceptional events such as short circuits, atmospheric or operational
over-voltages, overflowing, etc. please consult our service before re-energizing.
IMPORTANT: IN CASE OF ANY DEFECTS
NATED, PLEASE CONTACT OUR ASSIST
WHICH CANNOT BE ELIMI-
ANCE SERVICE IMMEDIATELY.
• • •• •• •• • •• •••• • •• • • • • ••••• • • • •• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Only qualified and properly trained personnel equipped with all necessary
protection devices, according the local regulations, may perform such works
or inspections. The Manufacturer is not responsible for the installation of the
transformer.
Some possible problems are listed in Table 10 with suggested solutions. If
a problem persists or is not listed below, please contact the Manufacturer.
Anomaly
Possible cause
Possible solution
1. Overheating
•• • • ••••• •• •• • •••• ••••••••••••••••••••
• High ambient
temper-ature
• Poor ventilation of
installation room
• Check the room venti-
lation system (damaged
fans, obstructed air louvers,
faulty protection devices)
• Increase cooling of the
installation room
• •• •• • •••• ••• ••• • • •• ••• • •• •• •• • •• •••••••••••••••••••••••••••••••••••••
• Failure of the
tempera-ture
monitoring device
• Faulty temperature
sensor on the winding
• Load is not distributed
in uniform way
• Reset the tempera-ture-
monitoring device or
replace it if faulty
• Replace the faulty sensor
• Check the position of the
connection on the tapping
IMPORTANT: ANY INSPECTIONS AND OPERATIONS ON THE TRANSFORMER
CAN BE PERFORMED ONLY IF IT IS COMPLETELY DE-ENERGIZED.
27
IMPORTANT: Any Inspections and operations on the transformer
can be performed only if it is completely de-energised.
Only qualified, and properly trained personnel equipped with all necessary protection devices, according to local
regulations, should perform such works or inspections.
Whilst Bowers Electricals Ltd, are
NOT
responsible for the installation of the transformer, If a problem persists or is not
listed below, please contact us.
1.
Overheating.
General overheating
•
High ambient temperature.
•
Poor ventilation of
installation room.
•
Check the room ventilation
system (damaged fans,
obstructed air louvres,
faulty protection devices)
•
Increase cooling of the
installation room.
Overheating of one or more windings
•
Failure of the temperature
monitoring device.
•
Faulty temperature
sensor on the winding.
•
Load is not distributed
in uniform way.
•
Reset the temperature
monitoring device or replace
it if faulty.
•
Replace the faulty sensor.
•
Check the position of the
connection on the tapping.
Tel: 01773 531531 [email protected] www.bowerselec.co.uk
3
INSTALLATION, USE AND MAINTENANCE MANUAL
EN
APPENDIX
1.0 – REFERENCE STANDARDS
2.0 – RATING PLATE
3.0 – LIST OF COMPONENTS AND ACCESSORIES
4.0 – IMPORTANT NOTICE
5.0 – RECEIVING, HANDLING AND STORING
5.1 – RECEIVING
5.2 – HANDLING
5.3 – STORAGE
6.0 – INSTALLATION
6.1 – SITE PREPARATION
6.2 – STANDARD INSTALLATION CONDITIONS
6.3 – WORKING TEMPERATURE
6.4 – VENTILATION
6.4.1 – NATURAL / FORCED VENTILATION OF THE
INSTALLATION ROOM
6.4.2 – FORCED VENTILATION OF THE TRANSFORMER
6.5 – INSULATION DISTANCES
6.6 – SAFETY DISTANCE
6.7 – TIGHTENING TORQUE FOR ELECTRICAL & MECHNICAL
CONNECTIONS
6.8 – VISUAL INSPECTION
B
owers Electricals Ltd, Heanor Gate Road, Heanor, Derbyshire DE75 7GX
Telephone: 01773 531531 (24 hours) Fax: 01773 716171
E-mail:
www.bowerselec.co.uk
CAST RESIN TRANSFORMER:
Installation, Operation &
Maintenance Manual
11. GUIDE FOR TROUBLE SHOOTING