tender for supply of various type of electrical material/componant at 400kv substation greater noida under electricity 400 kv sub station, division , greater noida. - 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 2 supply of rotatory shaft for mechanism of 220 kv gr make isolator. 3 supply of contactor for dcdb with 2 no. + 2 nc having with 220 kv dc model no tx4dzmd. 4 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. 5 supply of 16 amp double pole 220 v dc mcb with a switch with 2 nc + 2 no. contact suitable for hanging control panel cb operation. 6 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