REPAIR /MAINTENANCE OF HT EXTERNAL ELECTRIFICATION, EXTERNAL WATER SUPPLY AND OTHER MISC E/M WORKS AT NHO AND PCDA(AF) UNDER GE CLEMENT TOWN

Disconnecting & Taking out existing change over swtich from MRS LT panel room and supply and fixing commissiong , testing 630 A change over switch in 400 KVA genereator room including all necessary fixing arrangement & connceting LT Cables with suitable legs/thimbles as requied etc complete all as specified and directed.

M&L XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric H T power cables (heavy duty) with aluminium conductor, 11000 volts Earthed,,grade cross sectional area 95 sq. mm 3 core complete all as specified and directed

Supply, laying, connecting and testing in repalcement XLPE insulated, screened, PVC bedded, galvanised steel strip armoured electric power cable (heavy duty ) 1100 Volts grade with stranded aluminium conductor cross sectional area 400 sqmm 3.5 core ISI marked laid in cable duct/trenches/surface/wall complete all as specified and directed.

M & L for servicing of (as described below) indoor/ outdoor type HT 11 KV VCB , VCB of various capacity. (a) Servicing and inspecting of draw out type trolly mounted, manual spring charge ON-OFF mechanism and testing for proper functioning of ON and OFF operation ,servicing of male female contacts,greasing all the mechanical components and applying dry graphite conductive sealent for contacts.(b) Cleaning,inspecting and testing HT 11 KV bus bar ,Checking of insulators at input and output for any crack of damages, Checking of cable termination for all the three phases, Cleaning the copper bus bar , checking for proper insulation ,tightening all the nuts ,bolts of bus bar.(c) Cleaning ,inspecting and testing of electrical wiring system, ammeter,voltmeter, VAF meter, selector switch, all illuminated indicators for RYB phase ,DC supply healthy,spring charge ,trip circuit healthy etc(d) Cleaning, inspecting and testing for over current relay ,CT for ammeter ,PT for voltmeter for display of voltage HT 11 KV (e) Setting of earth fault relay and over current relay as per ,manfactrurers's recommendetion and site requirement .