Transformer oil filtration through Ultra High Vacuum oil filteration bangalore

   We provide Transformer Oil Filtration services for Distribution transformer and Power Transformers. .Our offered service is rendered by our highly experienced professionals

Why is Oil filled in the transformer?

   Transformer oil has excellent electrical insulating properties ,high dielectric strength and are stable at high temperatures and acts as coolent for the winding of the transformer.These properties of the insulating oil helps in providing electrical insulation between the windings and other parts of the transformer and acts as a arc quenching medium and reduces copper loss.Transformer oil prevents degradation of insulating papers due to oxidation.

Why is Transformer Oil Filtration needed?

   Transformer oil gets deteriorated over time due to contamination, overheating, electrical stress, oxidation of hydrocarbons with atmospheric oxygen, high temperatures,reaction with metal surfaces and moisture.Moisture and water enters the transformer due to failure in the transformer gaskets. water effects the insulating properties of the transformer oil as it reduces the dielectric strength and causes increased carbon formation during arcing. Some of the dissolved water also gets absorbed over time by the paper insulation of the transformer which badly affects the insulation properties. Removing the water content in the paper insulation requires drying out with heat and vacuum using ultra high vacuum filtration machines. Oxidation of oil results in acids in the transformer oil. The oxidation speed depends on temperature and presence solid copper, iron and other diffused materials.Oxidation of transformer oil should be ketp at minimum by regularly maintaining gaskets and seals and moisture should be removed by regular filtration of transformer oil. Regular filtration of transformer oil wil increase the life expectancy of the transformer by preventing deterioration of the transformer oil.

Transformer oil filtration process

   A three phase distribution transformer is a step down electrical transformer that is used to carry electrical energy from a primary distribution system to a secondary distribution system or direct power supply consumer.These transformers limits the voltage supply of the primary circuit to the amount of voltage desired by the consumer.The amount of this voltage keeps on changing and can be different for commercial consumers, residential consumers and light industry consumers.Corrugated Tank Distribution Transformers are compact in size and elegant in appearance. These Transformers are manufactured using the superior quality materials, employing the most modern and reliable manufacturing practices and require little maintenance.

Specifications : Phase: Three Phase, ,Brand: NGEF (HUBLI) LTD ,Winding Material: Copper/Aluminium ,Primary Voltage: 11 kV, 22 kV, 33 kV ,Ratings: Upto 5000 kva ,Frequency: 50 Hz ,Applicable Standards: IS,CEA,IEC,ANSI,JIS,DIN,BS,EN, etc. ,Secondary Voltage: 415, 433 V(Other Voltages as required) ,Voltage Regulation Type: Off-circuit voltage regulation

Pole Mounted Distribution Transformers

    Pole mounted transformers are electrical distribution transformers that are mounted on an electrical service pole made of wood or concrete and are usually single phase transformer. Pole mounted transformers are used for converting distribution voltage od 11KV to the 230v volt power commonly used by homes and small commercial installations.Pole mounted transformers primary and secondary windings of the transformer, can either be copper or aluminum or one can be copper and the other aluminum. Pole mounted electrical transformers are more commonly used in rural area. These transformers range from 16 kVA to 100kVA and transform 11,000 to 33,000 volts down to a low voltage of 415 volts. Pole mounted transformers are reasonably small in size and mass so that it is easy to install them on single pole structures, and larger units on two-pole structures, approximately 5 meters above the ground. This makes the transformers inaccessible, reducing the risk of injury to animals and people and minimizing vandalism. With exposure to harsh climate conditions and situated in remote areas, reliability has been built into the specification of these electrical transformers. Tanks are shaped to reduce accumulation of water and corrosive materials. Protective coatings are applied to tanks to reduce corrosion. In the coastal regions tanks are zinc sprayed. In highly corrosive areas tanks are made from Stainless or 3CR12 steel. The vector sum of resistance and reactance which limits the current flow in an alternating current circuit; when banking single-phase pole mount transformers, impedance can be critical to ensure proper balanced loading of the three transformers in the bank and when pole mounted transformers are used in parallel operation.

Plinth Mounted Distribution Transformers

Beyond 200KA the transformers get heavier hence mounting on a pole is not recommended such distribution transformers are mounted on a platform/plinth normally made of concrete.The HT sise of the transformer is electrically protected by a horn gap fuse and is switching of the transformer is done from the ground though a mechnism connecting the breakers. A fencing is provided around the transformer to protect it from animals and unauthorized access.