Name of Work:- PROVISION OF NGR FOR TRANSFORMERS AT MRS AND ALLIED WORKS AT AF STN HALWARA
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Item Description
1
Supply, installation, testing & commissioning of stainless steel (AISI-304) Punch Grid type NGR (NEUTRAL GROUND RESISTOR) housed in 2mm thick sheet enclosure powder coated with shade RAL-7032 for 5 MVA 66/11 KV Transformerhaving following brief technical particulars: Rated Voltage - 11 KV, Rated Resistance - 63.5 Ohm (+/- 10 %), Rated current- 100 Amp, Time Rating - 10 Sec, Temp Rise - 350 deg C above 50 deg C Ambient, Location, DOP - Outdoor, IP55, Reference Std. - IEEE-32, with (Neutral Termination) 1 No. 12 KV Class, Brown glazed Porcelain Bushing fitted with M12 brass/SS Stud, with (Ground Termination) 1 No. 12 KV class, Brown Glazed Porcelain bushing Fitted with M12 Brass/SS Stud Complete all as specified and directed by Engr-in-charge. Accessories:- (1) Thermostat with Space Heater (2) NGR Monitoring Relay- M79N (3) Sensing Resistor-SR1000 (4) MCT (5) PT Note:- (i) The rate quoted by contractor is deemed to be inclusive of escavation, PCC and foundation required for NGR. Decision of GE shall be final regarding type of PCC and foundation details. Contractor is requested to visit GE office before quoting to understand the scope of work. (ii) Control wire and cable required for connection is deemed to be included rate quoted by contrctor.
2
Supplying, laying, jointing, testing and commissioning of HT XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts Earthed grade cross sectional area 120 Sqmm, Single core laid in trenches /pipes /ducts /along poles/ walls/ equipment etc with and including jointing kit for both end connection of 03 Nos x Power Transformers & NGR and thimbles/lugs of suitable size for coonection of cable complete all as specified and directed by Engr-in-charge.
3
Supplying, laying, jointing, testing and commissioning of HT XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavy duty) with aluminium conductor, 11000 volts Earthed grade cross sectional area 120 Sqmm, Single core laid in trenches /pipes /ducts /along poles/ walls/ equipment etc with and including jointing kit for both end connection of 03 Nos x Power Transformers & NGR and thimbles/lugs of suitable size for coonection of cable complete all as specified and directed by Engr-in-charge.
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