Description: Servicing Leakage Arrest and Overhauling of Power Transformer at Vidyut Bhawan Old PTR no 1 16 20MVA and HCM Electric Lane PTR no 1 16 20MVA under M 33kV Division in NDMC Special Repair Name of Work Servicing Leakage Arrest and Overhauling of Power Transformer at Vidyut Bhawan Old PTR no 1 16 20MVA and HCM Electric Lane PTR no 1 16 20MVA under M 33kV Division in NDMC Special Repair
Details: 1. Dismantling of all Transformer Accessories such as Radiators, Conservator, Cooling Fan, Bushing (HV & LV) Bus-bar. Buchholz Relay and the connecting pipes etc. by using suitable crane or by manually after draining of complete oil into oil drum tankers.2. Lifting Top Cover of Transformer main tank and OLTC by using heavy duty crane after removing of complete Nut-Bolts and removing of all old damaged gaskets.3. Washing/Cleaning of Core-winding and coil assembly of Transformer main tank and OLTC with hot oil by using connecting pipe with pump/filter machine for removing of sludge including checking/ replacement of damaged OLTC Fixed/ Moving Contacts transition resistance.4. Attending leakage from OLTC terminal boards & oil seal inspection window.5. Fixing new gasket of transformer, radiators, inspection window etc.6. Refusing of Top cover of the main tank and OLTC Top plate after checking/repairing of OLTC connection and Tightening of the Nut Bolts of core assembly by using heavy duty
Sector: Municipality