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Transformer Oil Purification Processes And Methods


Transformers are an important asset in the power supply industry. To ensure continued efficiency in performance of a transformer, the transformer oil must be purified at regular intervals.... – PowerPoint PPT presentation

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Title: Transformer Oil Purification Processes And Methods

Welcome To Royal Transformers
Transformer Oil Purification Processes And Methods
Transformers are an important asset in the power
supply industry. To ensure continued efficiency
in performance of a transformer, the transformer
oil must be purified at regular intervals. This
has a few advantages such as the improvement in
the insulation properties of the transformer oil.
The improved insulation ensures that the
transformer will have a longer life and fewer
breakdowns, and fewer breakdowns contribute to a
much more uninterrupted power supply. The higher
efficiency of the Furnace transformers India from
regular cleaning will further bring down the
costs of maintenance in the long run.
Transformer Oil Purification Procedure
The life of a transformer depends on the oil
quality and quantity. The purification process of
the transformer oil removes any sludge, dissolved
moisture, and gases from the transformer oil.
Transformers oil filtration services is
purified mainly in two ways vacuum dehydration
and centrifugal removal of gases.
The first step in the purification process is to
increase the temperature of the oil up to about
sixty-five degree Celsius. This heat is essential
in the removal of moisture and dissolved gases
from the oil. Moreover, the viscosity of the oil
drops with the heat and this aids in the
purification process.
The second step involves the removal of sludge
and dirt from the oil. This is done by filtering
the oil with a classic edge filter or a depth
type filter. Both methods of filtration have
their advantages and disadvantages. The edge
filters are reusable at least three to four times
after it is cleaned properly. However, this takes
up a lot of time and effort.
An alternate method for the removal of sludge
from the transformer oil is to use centrifugal
force. This process does not necessarily require
a power-driven centrifuge to be used to remove
dirt from the oil but since this method can only
remove dirt that is above 10 microns, the use of
a power-driven centrifuge can sometimes become
necessary. Power centrifuges can also remove
undissolved water that may be present in the
transformer oil and it drives down the cost by
making it unnecessary to have the filter paper
changed every time.
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The third step in the purification of transformer
oil is dehydration to remove dissolved moisture
and degasification to remove dissolved gases.
This process takes place in the degassing chamber
where the transformer oil is separated from its
dissolved impurities in an atmosphere of reduced
pressure or vacuum. This is because each of the
three components, the oil, the moisture, and the
gases, have different boiling points and it can
be separated this way.
Mineral oil can be used as transformer oil but it
has some serious disadvantages. It can easily
catch fire if there is even the smallest spark
near it. Therefore, fire codes make it mandatory
that the transformers inside or near buildings
use non-flammable liquids as transformer oils.
Another material that was used as transformer oil
is polychlorinated biphenyls or PCBs. they are
not flammable and have high electrical insulation
but they are highly non-biodegradable, toxic,
bioaccumulative, and cannot be safely disposed
of. The use of these two transformer oils being
highly injurious to health and environment,
researchers are now experimenting with
biodegradable oils and nanofluids to be used as
transformer oils. The transformer oil is a
vital part of the functioning unit of a
transformer because it works as an insulating
layer in the transformer. This oil has to be
stable at high temperatures and have excellent
insulation abilities in electrical conditions.
The transformer oil is found to be useful in
oil-filled transformers, certain high powered
transformers and other such applications. The
purification of Distribution transformers India
is, therefore a necessary step in maintaining the
strength and efficiency of a transformer.
Contact Us
Address             Royal Electricals
Plot No.1405, Phase-IV, GIDC
Estate, Vithal
Udyognagar-388121, Dist. Anand. Contact Person
 Mr. P.A.Patel Tel.No                (02692)
236047/9825022670 Fax No               (02692)
236048/236236 E-Mail      
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