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 As
is well known the Transformer plays an important role in the
generation, transmission and distribution of electrical
energy. Under load the transformer, dissipates heat and the
insulating oil acts as a coolant as well as a effective
dielectric. Due to the highly hygroscopic nature of the
transformer oil, it absorbs moisture from windings, which
leads to gradual deterioration of dielectric strength.
TRUHEAT oil purifier is the most efficient and economical
purification system. It consists of the following:
(1)
Filter Unit, (2) Indirect system of Oil Heating, (3) Vacuum
Dehydration / degasification Unit (4) Condenser and
condensate receiver (5) Feed and delivery pump (6) Piping
& Valves (7) Control Panel
Components
of Plant
1)
Filter Unit: The filter unit consists of:
(a)
a Coarse strainer having a wire mesh filter element for
retaining solid particles and a powerful magnet for
retaining magnetic particles.
(b)
a Filter unit containing round type filter paper discs held
under spring compression. These can be easily cleaned off
the sediment by reverse flow of compressed gas.
2)
Heating Chamber: Specially designed heaters with
low watt density heat the auxiliary heating oil, which in
turn heats the transformer oil maintaining a temperature of
70-80 C. This indirect method of heating completely obviates
any localized overheating of transformer oil.
3)
Vacuum Dehydration Chamber: The cylindrical
external pressure vessel fitted with a number of shallow
drip trays and a specially designed spray pipe. This
arrangement increase interfacial surface area.
4)
Condensor & Condensate: For condensing the
vapour from dehydration chamber and condensate receiver of
welded M. S. construction.
5)
Pumps: Effective feed and delivery pump of rotary
gear type coupled directly with motors. Vacuum pump having
adequate capacity are provided.
6)
Water Seperator: Collects the water produced by
the condensor which can be periodically drained out.
7)
Control Panel: A centralized control panel
incorporated all major electrical devices with indicating
lamps is provided
(a)
Imported thermostat for temperature cut off at desired
(b)
Thermometer for measuring temperature of both heating as
well as transformer oil
(c)
Pressure & Vacuum gauges
(d)
Flow control indicator
(e)
Electronic Float Control
(f)
Electrical instruments, voltometers and ammeters
(g)
Electrical overloads and overload releases for safety of
motors.
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