Electrical repair to be carried out to 500KVA oil cooled Voltage stabilizer standby unit No 1 at new V T Station for WSS Doodanga

Amount

Electrical repairs to be carried out to 500 Kva Oil Cooled Voltage Stabilizer Standby unit 1 at New V.T Station for Water Supply Scheme Doodhganga

Disconnecting of 500 KVA Oil cooled Voltage Stabilizer from A.C Supply at New V.T Station for Water Supply Scheme Doodhganga. Shifting of the Voltage Stabilizer to loading site using manual means. Loading of the voltage Stabilizer in a Private load carrier and shifting to workshop for carrying out necessary repairs. Removing of the Stabilizer unit from M.S Tank after draining out the transformer oil using necessary tools and tackles including crane wherever required. Dismantling of the damaged portion of L.T coil 01 No’s from the core after removing voltage regulator and copper Leads/connections from the stabilizer cage. Removal of the loose old and worn out insulation from damaged coils/leg using conventional means. Complete rewinding of the damaged portion of L.T coil with new copper strips of required size 10 mm x 3.5 mm /as per sample [48 Kgs] after removal of the damaged copper strips.Retapping of the same coil on lathe using superior quality cotton tape, cardboard, lathride sheet and allied items to achieve required insulation of coils. Varnishing and Heat treatment of the coils using standard means to achieve zero moisture. The Job also includes assembling of Coils /leg with the core including Voltage regulator with the Stabilizer cage after making connections of the L.T Leads with the Voltage regulator. Assembling of the stabilizer unit in the M.S tank using skilled labour tools and tackles after fitment of gasket, nuts, bolts and filling with available T-Oil nafter necessary filtration if required. The Job includes Shifting back the Repaired Voltage Stabilizer to worksite in a private load carrier by way of mechanical and manual means, connecting to A.C Supply and testing on Full Load at site. [Old Scarp to be returned to Divisional Store through proper Return Indent].

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