supply of electrical material/components supply of various type of electrical material/components , dismantling of defective 420 kv cvt (r phase of 400 kv main bus 2nd) and its shifting to store/site at 400kv substation,greater noida , supply of filter capacitor 4700 uf 450 vdc surge toi +/- 20 % alcon/standard make , supply of 250 amp disconnector type fuse unit c&s /havels l&t make. , jumpering of 420 kv cvts modification of its jumper size and all associated work to complete the job. italso includes opening of jumper before dismantling of cvt. , supply of rigid type clamp for 400 kv bus post isolator. , repairing & overhauling work of220 kvcentre break tandem isolators will be done of220 kv noida sector 20 ckt-2nd at 400 kv s/s greater noida.work of dismantling of male & female moving contact assemlby and porcelain support insulator (if required) repairing of electrical contacts,overhauling of all moving and rotating parts including replacement of ball bearing (if required) will be done of isolator at 400 kv s/s greater noida.all other associated work will be done forcomplete the work satisfactorily.