REPAIR/MAINTENANCE OF DISTRIBUTION TRANSFORMERS AND PROTECTIVE RELAYS AND CONNECTED WORKS AT INS DRONACHARYA AND SMA RAMESHWARAM UNDER GE FORT KOCHI

Amount

GENERAL NOTE:- The contractor shall visit the site before quoting the tender and get acquaint himself regarding the make/ type of transformer etc, inorder to get a clear knowledge of site and quote accordingly. Nothing extra shall be admissible on this account please.

Material and Labour for repair of Transformers 11 KV/433 Volts on site of any make installed at various location of Sub Stations, including disconnecting the HT/LT Cables, earth strips etc. from the transformer, draining the complete oil for removing sludge from the tank refilling and removing the top cover, conservator, explosion vent,etc, for detecting the faults and repairing by welding/bracing. Replacing all the gaskets & neoprene washers for leakage arresting. Reassembling the transformer and testing etc complete upto 400 KVA capacity complete all as specified and directed by the Engineer-in-charge. Note :- Supply only new transformer oil and oil filtration shall be measured and paid under the schedule of relevant items.

Material and Labour for repair of Transformers 11 KV/433 Volts on site of any make installed at various location of Sub Stations, including disconnecting the HT/LT Cables, earth strips etc. from the transformer, draining the complete oil for removing sludge from the tank refilling and removing the top cover, conservator, explosion vent,etc, for detecting the faults and repairing by welding. Replacing all the gaskets & neoprene washers for leakage arresting. Reassembling the transformer and testing etc complete from 500 to 800 KVA capacity complete all as specified and directed by the Engineer-in-charge. Note :- Supply only new transformer oil and oil filtration shall be measured and paid under the schedule of relevant items.

Supply and fix in repairs 11000V Bushing as per site requirements with superior quality brass rods complete with and including necessary Rubber `O' ring/oil seals and gaskets for distribution transformers of capacity up to 800 KVA complete all as specified and directed by the Engineer-in-charge.

Supply and fix in repairs 415 V Bushing porcelain with superior quality brass rods complete with and including necessary Rubber `O' ring/oil seals and gaskets for distribution transformers of capacity up to 800 KVA complete all as specified and directed by the Engineer-in-charge.

Material and Labour for repair of Transformers 11 KV 433 Volts on workshop transportation loading /unloading any make installed at various location of Sub Stations, including disconnecting the HT/LT Cables, earth strips etc. from the transformer, draining the complete oil for removing sludge from the tank refilling and removing the top cover, conservator, explosion vent, etc, for detecting the faults and repairing by hevy works. Replacing all the gaskets & neoprene washers for leakage arresting. Reassembling the transformer heating at chamber,transportaion back to site and commissioning etc complete upto 800 KVA capacity complete all as specified and directed by the Engineer-in-charge. Note :- Supply only new transformer oil and oil filtration shall be measured and paid under the schedule of relevant items.

Dehydration and online filtration of transformer oil at site by centrifugal filtration method using mobile filtration plant on transformers so as to achieve appropriate di-electric strength (not less than 55KV) and testing of the same before and after filtration to entire satisfaction of Engr-in-Charge in various locations for transformers of various capacities and submitting of test results in triplicate all as specified and as per availability of shut down before and after monsoons or whenever as directed complete all as specified and directed by the Engineer-in-charge.

Supply only new insulating transformer oil of superior quality low viscosity having di-electric strength not less than 55 KV bought at site in sealed containers and confirming to IS 335 complete all as specified and directed by the Engineer-in-charge. Make : Power oil /Gulf oil/Trans oil or equivalent as approved by GE.

Material and Labour for preparation of old painted iron surfaces of the Transformer of capacity 100 KVA to 400 KVA, by cleaning completely after that applying two coats of synthetic enameled paint on the transformer as per MES colour complete all as specified and directed by the Engineer-in-charge. Note:- Painting shall be carried out with Spray Gun using compressor.

Material and Labour for preparation of old painted iron surfaces of the Transformer of capacity 500 KVA to 800 KVA, by cleaning completely after that applying two coats of synthetic enameled paint on the transformer as per MES colour complete all as specified and directed by the Engineer-in-charge. Note:- Painting shall be carried out with Spray Gun using compressor.

Supply and replace unserviceable transformer temperature gauge having 100 mm dia dial, 0 to 1200C, brass sensor, 6" length with 1/2" BSP thread adjustable brass connection and maximum reading pointer and re-setting device complete all as specified and directed by the Engineer-in-charge. Make:- L&T /Schneider/ABB or equivalent as approved by GE.

Supply and fix in repair Gunmetal Gate valves 50 mm dia as per IS 778 ISI marked complete all as specified and directed by the Engineer-in-charge.

Supply and fix in repair Gunmetal Gate valves 25 mm dia as per IS 778 ISI marked complete all as specified and directed by the Engineer-in-charge.

Material and Labour for replacement of defective silica gel breather with silica gel transparent type complete set for 500-800 KVA capacity transformer complete all as specified and directed by the Engineer-in-charge. Make:- L&T /Schneider/ABB or equivalent as approved by GE.

Material and Labour for replacement of defective silica gel breather with silica gel transparent type complete set for 100-400 KVA capacity transformer complete all as specified and directed by the Engineer-in-charge. Make:- L&T /Schneider/ABB or equivalent as approved by GE.

Supply and fill the silica gel for breather of various transformers including taking out old gel complete all as specified and directed by the Engineer-in-charge.

Supply, install, test and commissioning in repair of Multifunctional Demand monitoring suitable for 11 KV including connected meter control wiring complete all as specified and directed by the Engineer-in-charge.

M & L for copper winding super enameled with insulation,varnish,heating etc after taking out from transformer core with same guage of existing for HT complete all as specified and directed by the Engineer-in-charge.

M & L for copper winding super enameled with insulation,varnish,heating etc after taking out from transformer core with same guage of existing for LT complete all as specified and directed by the Engineer-in-charge.

M & L for attending transformer 11 KV /433 V fault at any capacity by disconnections electrical connections and meggering for health check up ,dismantling cable connections recommendation checking after heavy works complete all as specified and directed by the Engineer-in-charge.

Supply and fix replacement of UPS for 8 hrs back up single phase AC input 160 to 260 V and out put 230 ± 1% of capacity 2 KVA with batteries of suitable capacity complete all as specified and directed by the Engineer-in-charge.

M&L for earthing complete with galvanized steel earth plate electrode 600x600x6mm thick buried directly in ground /earth pit not less than 2.25m deep below the ground level with top edge of the plate not less than 1.5 m below the normal ground level connected to GI strip of 32x6 mm by means of nut, bolts, check nuts and washers of galvanized iron or steel as shown in electrical plate No. 3, including necessary earth work and excavation, charcoal dust, common salt, PCC chamber, RCC cover 40mm thick 1:2:4 using 20mm graded stone aggregate reinforced with 6mm dia round bars 75mm C/C both ways, test point and watering pipe complete, including connecting to earthing test point or to DB / Panel complete as directed by Engr in charge and testing resistance etc complete, including taking down old earthing complete all as specified and as directed. Note: (i) The rate quoted shall be deemed to be included for main earth lead from earth electrode to test point up to 7.5 m only. (ii) On testing after completion if the desired earth resistance not optained as per IE rules the earthing will be redone by the contractor as directed by Engnr in charge with out any extra cost to Govt.

AR Traders (BID ID -3382394)

VVM CONSTRUCTIONS (BID ID -3381442)