EM II Core lifting inspection and internal cleaning of all 20 Nos Rectifier Transformers in ESP II during the overhauling period of 2021 22

Loading of oil filtering machine into vehicle and bring it to “O” m of ESP-II and lifting the machine to the top floor of ESP –II for oil filtering works and set right the machines without shake and return back the machine to original place after completion of oil filtering works.

Providing scaffolding disconnect the power and control cables and transformer secondary field connections ,dismantling the transformer top cover, lifting the rectifier transformer core , flushing the core and winding assembly, rectifier diode stack and transformer tank with new transformer oil inspect the bushing and internal connections. After completion of work reassembling the transformer core, placing the top cover and then reconnecting the transformer power and control cables. After completion of this work the scaffolding pipes to be dismantled (ESP transformer).

Connecting the inlet and outlet hoses to oil filtering machine and extending power supply to the oil filtering machine, filtering the oil fill the breakdown values of the oil improved to the required level. Replacing the valve and gasket if necessary , attending leakages of oil tightening of bolts and nuts checking the earth connection attending of all rectification works if any related to rectifier transformer, transporting of oil and other materials from store to work spot and re transport to devolution of waste materials to store.

DURAI ENGINEERING WORKS