REPAIR/MAINTENANCE OF DISTRIBUTION TRANSFORMERS, HT 11 KV VCBs, RMUs, UG CABLES AND CONNECTED WORKS AT INS DRONACHARYA, SMA RAMESHWARAM, DAD AND PAMPAVIHAR 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 / SF6/ VCB 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/overhauling of Transformers 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 leakage and repairing by welding/bracing. Replacing all the gaskets and neoprene washers for leakage arresting. Reassembling the transformer and testing etc complete upto 400 KVA cap complete all as specified and directed by the Engineer-in-charge. Note :- Supply only new Transformer oil & oil filtration shall be measured and paid under the schedule of relevant items.

Material and Labour for repair/overhauling of Transformers 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 leakage and repairing by welding . Replacing all the gaskets and 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 & oil filtration shall be measured and paid under the schedule of relevant items.

Supply and Fix 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 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.

Supply and Fix master Control relays with LCD Display programmable at per site reqt suitable for 11 KV and 24 volts DC working voltage 3 phase controls and measurements complete all as specified and directed by the Engineer-in-charge.

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.

Material and Labour for preparation of old painted iron surfaces of the Transformer of capacity 100 KVA to 400 KVA, by cleaning completely afer 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 afer 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 2500 KVA to 3000 KVA, by cleaning completely afer 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 only 11 KV new compatible off load tap changer system to vary the voltage output as per relevant IS for the distribution transformers of capacity up to 800 KVA complete all as specified and directed by the Engineer-in-charge.

Supply and fix in repair 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.

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.

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.

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.

Material and Labour for maintenance/Servicing of OLTC (Onload Tap Changer) of 3000/2500 KVA Transformers including dismantling of tap mechanism, alignment of parts, lubrication of parts, greasing to gear wheels arresting of oil leaks by replacing the gaskets and neoprene washers, including testing and commissioning of OLTC complete all as specified and directed by the Engineer-in-charge. Note :- Parts required to be replaced shall be paid separately under "Supply only" items.

Supply only fixed contacts of OLTC of capacity 2500/3000 KVA complete all as specified and directed by the Engineer-in-charge.

Supply only moving contacts of OLTC of capacity 2500/3000 KVA complete all as specified and directed by the Engineer-in-charge.

Material and labour for repairing the HT SF6 unit by removing the mechanism from panel , replacing required parts such as interlock notch assembly, aligning the on-off position etc, removing the dust, lubricating by applying jelly, cleaning the insulators, providing new nut bolts etc as required, reinstalling the HT VCB into panel before testing and then testing and commissioning complete all as specified and directed by the Engineer-in-charge.

Material and labour for servicing of HT VCB 11 KV along with CTs/PTs of current rating up to 900A of any make and type by drawing out breaker assy from panel and carryingout the following works complete all as specified and directed by the Engineer-in-charge:- (i) Cleaning /decarbonizing of all fixed and moving contacts, levers, spring using suitable cleaning agent and tightening of screws, nuts, bolts, spring etc. (ii) Adjust the trolley and out mechanism. (iii) Lubricating /greasing of all operating mechanism and moving parts, switching and tripping mechanism, automatic shuttering system, necessory brazing turning polishing of main and auxiliary contact demoisturing of insulators etc to be done. (iv) Testing of tripping performance of HT VCB by primary injection including interlocking if any. (v) Checking of operating mechanism internal wiring circuit etc tightening of all connection including removing moisture deposit inside the VCB. (vi) Checking all end terminals, tighten bolt, nut and washers, put in position to engage the VCB with supply system and testing for smooth functioning all as directed. Note :- Cost of taking down of all old unserviciable parts complete and providing new items such as nut, bolt with double washers HRC fuse up to the capacity of 32 Amp , fuse carrier base, HT packing gasket shall be deemed to be included in the quoted rate except the supply only items catered.

Supply only isolating contact assembly 400A as per existing size, type and suitable for 11 KV VCB including taking down old item complete all as specified and directed by the Engineer-in-charge.

Supply only earthing contact assembly as per existing size, type and suitable for 11 KV VCB including taking down old item complete all as specified and directed by the Engineer-in-charge.

Supply only motor and gear assembly as per existing size, type and suitable for 11 KV VCB including taking down old item complete all as specified and directed by the Engineer-in-charge.

Supply only closing coil assembly as per existing size, type and suitable for 11 KV VCB complete all as specified and directed by the Engineer-in-charge.

Supply and fix vaccum intrupter suitable for VCB 11 KV 630 Amps complete all as specified and directed by the Engineer-in-charge.

Supply only push button Red/Green/Yellow complete all as specified and directed by the Engineer-in-charge.

Supply only Current Transformer resin cast insulated copper wound having ratio of 100/5 Amp, 11 KV complete all as specified and directed by the Engineer-in-charge.

Supply only synthetic rubber boot of SF6 circuit breaker complete all as specified and directed by the Engineer-in-charge. Make :- Areva make of Boot / E-Kab or equivalent as approved by GE.

Supply and lay XLPE insulated sheathed earthed PVC bedded galvanized steel strip or wire armoured electric power cable heavy duty with aluminium conductor 11000 volt grade cross sectional area 185 sqmm 3 core including taking down old unserviceable cable complete from trenches/ poles/ surface complete.all as specified and directed by the Engineer-in-charge. Note:- Excavation, returning filling and removal of soil shall be measured and paid seperately.

Supply and lay XLPE insulated sheathed earthed PVC bedded galvanized steel strip or wire armoured electric power cable heavy duty with aluminium conductor 11000 volt grade cross sectional area 240 sqmm 3 core including taking down old unserviceable cable complete from trenches/ poles/ surface complete.all as specified and directed by the Engineer-in-charge. Note:- Excavation, returning filling and removal of soil shall be measured and paid seperately.

Material and labour for cable jointing kit for 11 KV (earthed) grade cable for straight through heat shrinkable type joint complete with jointing materials and all accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 sqmm to 185 sqmm complete all as specified and directed by the Engineer-in-charge.

Material and labour for cable jointing kit for 11 KV (earthed) grade cable for straight through heat shrinkable type joint complete with jointing materials and all accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 240 sqmm to 400 sqmm complete all as specified and directed by the Engineer-in-charge.

Material and labour for XLPE cable joining kit end termination heat shrinkable type in door type suitable for UG cable 120 sqmm to 185 sqmm 3 core 11000 volt grade complete all as specified and directed by the Engineer-in-charge.

Material and labour for XLPE cable joining kit end termination heat shrinkable type in door type suitable for UG cable 240 to 300 sqmm 3 core 11000 volt grade complete.all as specified and directed by the Engineer-in-charge.

Material and labour for riddle sand cushioning (dry) in trenches/ducts for protection of UG Cables (below, above and around the UG Cable laid) of 23 cm spread thickness (8 cm in depth before laying the cable and 15 cm in depth after laying the cable) and consolidated (punned) upto 180mm thickness complete all as specified and directed by the Engineer-in-charge. Note:- Punned thickness only shall be measured for the purpose of payment.

Supply and lay sub class "B" burnt bricks, as in cable protection, laid length of brick perpendicular to length of cable complete all as specified and directed by the Engineer-in-charge.

Excavation in trenches not exceeding 1.5 meter wide and not exceeding 1.5 meter depth and getting out in soft/loose soil and making good the disturbed surfaces complete all as specified and directed by the Engineer-in-charge.

Returning filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25cm thick in soft/ loose soil complete all as specified and directed

Removing excavated material (Soil) to a distance n exc. 50 m and depositing where directed at a level n exc. 1.5 m above starting point complete all as specified and directed.

Supply and fixing/laying GI tubing 100mm dia light grade as cable protection in road cutting etc complete all as specified and directed by the Engineer-in-charge.

Material and labour for defect rectification in cables laid in trenches up to 240 Sqmm size 11000 Volts Grade with the help of electronic/digital fault locating machine to accuracy of 1 meter, removal of detoriated portion and keeping the same open, sealed and safe for cable joint complete all as specified and as directed by Engineer-in-Charge. Note:- Cost of T & P i.e. hiring of fault locating machine including transportation payment for technicians/Engineers, ncessary excavation and earth work shall deemed to include in quoted rate for the above, whereas cable joints shall be measured and paid separately.

Supply, install, test and commissioning of Multifunctional Meter LCD Display suitable for 11 KV HT panel including connected meter control wiring complete all as specified and directed by the Engineer-in-charge.

Material and labour 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.

Jack Electrolinks Private Limited

Toffy Construction