Electrical work

Amount

The work consist of overhauling of driving mechanism along with replacement of work overhauling kit of ‘O’ ring gasket. Inspection and rectification of gas leakage of 245 KV Circuit Breaker the work includes opening of R, Y & B phase assemble from upper and lower part terminal flanges, Cleaning of all grooves of flanges and porcelains with petrol, scrubber pad and acrylic and porcelains of all O-ring of the pole and gas pipe After testing of vacuum for 12 hrs. and satisfactory result, refilling of SF-6 gas upto required level. checking of proper operation of Circuit breaker from local and remote. All materials, T&P required for execution of work will be arranged by the contractor at his own cost. Checking & tightening of all connections in the marshaling box. Satisfactorily close/ trip operation of the breaker both by local and remote.

Repairing and overhauling of 245 KV Bus and Line isolators make round blade/strip type by opening jaws housing, finger, proper rubbing dust and flashing spot, opening isolator operating box & proper cleaning, lubrication & greasing of each moving parts, replacement damaged jaws, blades, clamps etc. Providing white petroleum jelly in jaws & blade heads. Finally checking of each isolator for smooth closing/opening & trouble free operation installed at 220 KV S/S Muradnagar. (Jaws, Blades, Clamps shall be provided by the department free of cost as per actual consumption.)

Painting of 245 KV Circuit Breaker with one coat of red oxide primer and two coats of standard make light grey of Ist quality of Asian/Berger make after cleaning of surface to remove dust, rust and oily surface at 220 KV Switchyard at 220 KV S/S Muradnagar.

Maintenance of 245 KV Circuit Breaker R,Y & B Phase Cubical Box of MS Sheet 16 SWG upper portion painted with synthetic enamel paint etc.

KARAN SINGH