Standard Vacuum Transformer Oil Conditioning Plant

Transformer Oil Filtration Manufacturers
Transformer Oil Filtration Exporters
Transformer Oil Filtration Plant
Transformer Oil Filter Machines
Multi Stage Filtration
Oil filtration plants

Our Insulating Oil Filters are designed for the efficient treatment of insulating oil used in transformers, switchgears, substations and switching stations. These filters perform filtration, dehydration and degassification in medium vaccum environment. The plants are available with capacities varying from 255, 600, 1200 and 2400 litres per hour and are available either as semi mobile or fully mobile units.

Our Insulating Oil Filter Plants are designed for continious trouble free operation and are suitable for out door use under all types of climatic conditions.

Filter Paper Packs:

The filter paper packs are specially prepared (treated with acetone) filter discs, each held under compression by a spring at the top of its guide. Only clean oil can pass between the paper discs and all the solid matter is retained at the outer surface of the columns.

The clean oil passes along the pack rod guide and springs into the vacuum receiver, where it is subjected to a vacuum of about 68cms. Hg at sea level. The water vapour, air and other gases are being drawn and discharged out by the vacuum pump.

The solid matter accumulated on the filter pack can be removed periodically by reverse cleaning with compressed air, the air being obtained from the vacuum pump/compressor.

Temperature control:

A thermostat is provided in the heater chamber by which the required temperature is maintained automatically. The thermostat has to be adjusted initially the first time when the filter is in operation to a temperature of 70-80 deg C.

Drive:

The pumps have a common drive from an electric motor. Direction of rotation of motor shaft must be anticlockwise looking from the shaft end.

Gauges:

A dial thermometer is provided in the vacuum receiver to show the outlet oil temperature. A vacuum gauge is provided in vacuum receiver to indicate vacuum obtained during filtering cycle.

A compound gauge is provided in the filter chamber to give an indication of the condition of the packs. Normally this gauge will show vacuum between 0 and 45 cms. Mercury. A positive pressure of about 0.7 kg/cm indicates that the packs need cleaning

Safety relief valves:

A built-in relief valve is provided in the dirty oil gear pump itself so that the pressure in the heater vessel as well as in the filter chamber does not increase beyond about 3 kg/cm2 at any time.

A relief valve is provided in the vacuum chamber so that during cleaning cycle, air pressure in the vacuum receiver does not increase beyond 2.5 kg/cm2.

An adjustable relief valve set to open at 3 kg/cm2 i/s /pr/ovided in the heater vessel to take care of excessive oil pressure.

Filter cartridge:

The filtration of solid impurities is carried out by special non-hygroscopic filter cartridge of high dust holding capacity, which has a unique feature of medium being progressively denser in the direction of the flow. Thus, coarser particles arrested in the outer layer of the filter cartridge and relatively finer particles get arrested by the inner layer. Hence the full depth of the medium is available for particle retention, thereby ensuring a long cartridge life. The cartridge can be replaced easily.

Temperature control:

A thermostat is provided in the heater chamber by which the required temperature is maintained automatically. The thermostat has to be adjusted initially the first time when the filter is in operation to a temperature of 50-60 deg C. Digital temperature indicator is also provided.

Drive:

The pumps have a common drive from an electric motor. Direction of rotation of motor shaft must be anticlockwise looking from the shaft end.

Drive:

A dial thermometer is provided in the degassing chamber to show the outlet oil temperature. A vacuum gauge is provided in vacuum line to indicate vacuum obtained during filtration.

A compound gauge is provided in the filter chamber to give an indication of the condition of the cartridge. Normally this gauge will show vacuum between 0 and 45 cms. Mercury. A positive pressure of about 3 kg/cm2 indicates that the cartridges to be replaced.

The level of the oil in the degassing chamber can be seen through a sight glass.

Safety relief valves:

A built-in relief valve is provided in the dirty oil gear pump itself so that the pressure in the heater vessel as well as in the filter chamber does not increase beyond about 3 kg/cm2 at any time.

An adjustable relief valve set to open at 3 kg/cm2 is provided in the heater vessel to take care of excessive oil pressure.

© Sapthagiri Industries 2017. All rights Reserved.
Powered by : Webkrea