IG-168-EN version 05; 17/04/2020
28
Maintenance
General instructions
transforma
.dis: Distribution transformers immersed
in dielectric liquid up to 3150 kVA
7.2.2. Inspecting oil volume
The oil volume must be checked from the point of view of
insulation and cooling. If the oil level fluctuates significantly
relative to the transformer working temperature, the cause
must be determined before proceeding with repair.
7.2.3. Noise
If strange noises are heard to come from the transformer,
contact
Ormazabal
and report the circumstances, so we
can determine the cause.
7.2.4. Tightening bolts and threaded pieces
Whenever it is detected that the tank's earthing terminals
are loose, de-energise the transformer in line with the
instructions in section 6.1 and tighten them immediately.
The bolts or rods that keep the transformer's wheel chocks
in place must be tightened securely to prevent accidental
movements of the transformer. It must be checked that the
tank valve bolts have not become loose due to vibrations.
If they have, tighten securely to prevent any re-occurrence.
7.2.5. Oil leaks
Leakage may occur in dielectric liquid transformers,
although this is not normally the case. If a leak is detected
in the transformer, contact
Ormazabal
immediately,
providing as much information as possible (including
photographs of the leak) in order to find a quick solution.
7.2.6. Paint
The transformers may show damage in the surface finish
due to bangs or blows with blunt instruments or as a result
of handling and transport.
These defects in the paint may also show localised rusting.
Report any damaged paint to
Ormazabal
, sending photos
and a description of the damage in order to define the best
actions to solve the problem.
Below are some instructions on how to repair the affected
areas:
Summary of Contents for velatia transforma.dis
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