We offer wide range of services, to name a few
This includes replacement of transformer windings, insulation, gasket sealing and removal of moisture. Such repairs/overhauling is carried out at site where adequate lifting and handling facility is available.
On load tap changer is the most important device of transformer which needs special attention. We are having a team of specialised engineers for repair and maintenance of On Load Tap Changers of any make.
Deccan has extensive experience in erection and commissioning of all types of transformers. We have a separate segment for erection and commissioning of large transformers. Combination of highly skilled site technicians and modern handling equipments enhances the speed and efficiency of this vital operation which includes erection of fittings and accessories, evacuation of main transformer tank, oil filling under vacuum and pre-commissioning tests of transformer.
Transformer oil filtration is carried out with oil filter machine of adequate capacity. Our mobile oil filtration plant is designed to remove dissolved moisture, dirt, air and other gases from the transformer oil.
This two stage plant operates on the principle of Low Temperature and High Vacuum. Unfiltered oil is taken in to the system through the inlet valve. Then the oil is pumped to the system through positive displacement pump. Preliminary filters protect the pump by entering solid and magnetic particles upto 1 mm size. The oil is heated up to 60°C. After heating the oil passes through the cartridge filters where the particles up to 5 microns are filtered. Then the oil is passed through a specially designed vacuum chamber, where the moisture, air and other gases are extracted from the oil. The vacuum chamber is designed in such a way that the oil is spread out and is allowed to fall by gravity over the media inside, forming a thin film of oil providing a large surface area exposed to vacuum. With this exposure, the dissolved moisture and gases are evacuated to improve the insulating properties of transformer oil.
Transformer oil is tested as per recommendations of relevant IS.
Active part of the transformer is heated and then evacuated for removal of moisture from the insulation. Core coil assembly is heated by hot oil circulation or induction heating system.
We supply all kind of transformer accessories and protection apparatus for any make of transformers and critical spares of On Load Tap Changers.
