81047REPAIR MAINTENANCE OF DISTRIBUTION TRANSFORMERS HT 11 KV VCBs RMUs UNDER GROUND CABLES AND CONNECTED WORKS AT INS DRONACHARYA AND SMA RAMESWARAM UNDER GE FORT KOCHI

Amount

M/L 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 & neoprene washers for leakage arresting. Reassembling the transformer and testing etc complete upto 400 KVA cap 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 item)

M/L 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 & neoprene washers for leakage arresting. Reassembling the transformer and testing etc complete from 500 to 800 KVA capacity 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 item)

Disconnecting of the transformer HV and LV sides (11/0.433 kV) Lifting from its position using all necessary arrangements without damaging, loading in vehicles, transportating to the workshop and vice versa, dismantling transformer for rewinding/ repairing/ Replacement of any necessary spares, washing of core using Hot transformer oil, Dehydration of core assembly by heating in oven, Inspection of transformer tank for leaks and incl rectification of leaks by welding/bracing etc, removing of sludge from tank, Making of all internal connections using all necessary strips/connectors, including replacement of entire gasket(s), spray painting of entire transformer using appropriate metallic paint as desired, checking the acidity of oil and insulation test from reputed test house & submission of the report to Engr in Charge. Note: i) Rate quoted for this item shall be deemed to include for all labour element required for removal of old burned copper coil / strip of HV / LV side and rewinding of new coil complete. ii) Supply only copper coil/ strip shall be measured seperately under relevent items of BOQ

S & F 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.

S & F 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 only HV coil winding with new super enamelled copper wire of appropriate insulation class including replacement of all insulation materials like impregnated paper all as specified In relevant IS and as directed by Engr in Charge.

Supply only LV coil with new super enameled copper strip of appropriate insulation class including replacement of all insulation materials like impregnated paper all as specified In relevant IS and as directed by Engr 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.

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

M/L for painting of Transformer of capacity 100 KVA to 400 KVA.with one coat synthetic enameled paint of existing colour after proper cleaning and dusting, de-oiling the surface and marking of SM No, MES No etc with white paint complete all as specified and directed by the Engineer-in-charge.

M/L for painting of Transformer of capacity 500 KVA to 800 KVA.with one coat synthetic enameled paint of existing colour after proper cleaning and dusting, de-oiling the surface and marking of SM No, MES No etc with white paint complete all as specified and directed by the Engineer-in-charge. Note for item no. 10&11 : Transformers already included for repair and spray painting work under item no. 3 shall not be considered for payment under this item.

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 up to 800 kVA complete all as specified and directed by the Engineer-in-charge.

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

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

Supply and fixed in repair Breather assembly 500-800 kVA suitable for Transformer, transparent type incl first fill of silica gel complete all as specified and directed by the Engineer-in-charge. Make:L&T/Schneider/ABB

Supply and fixed in repair Breather assembly 100-400 kVA suitable for Transformer, transparent type incl first fill of silica gel complete all as specified and directed by the Engineer-in-charge. Make: L&T/Schneider/ABB

Supply and fill the Silica gel for breather of various Transformers including taking out old gel complete.

M/L 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 & neoprene washers,including testing & commissioning of OLTC complete all as specified and directed by the Engineer-in-charge. Note : Parts required to be replaced shall be paid separately as "Supply only" item.

Supply only fixed contacts of OLTC 2500/3000 KVA complete all as specified and directed by the Engineer-in-charge. . (Make :Indo Tech Transformer)

Supply only moving contacts of OLTC complete all as specified and directed by the Engineer-in-charge. . (Make :Indo Tech Transformer )

Material and labour for repairing the HT VCB 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 & commissioning complete all as specified and directed by the Engineer-in-charge.

M & L servicing of HT VCB 11 KV along with CTs/PTs of current rating up to 630A 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 :- (i) 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. Make - Crompton Greaves /L&T/Schneider

Supply only earthing contact assembly as per existing size, type and suitable for 11 KV VCB including taking down old item Make - Crompton Greaves/L&T/Schneider

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. Make - Crompton Greaves/L&T/Schneider

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. Make - Crompton Greaves/L&T/Schneider

Supply only push button RED/Green/Yellow complete all as specified and directed by the Engineer-in-charge. Make : Crompton Greaves/L&T/Schneider

Supply only Current Transformer resin cast insulated copper wound having ratio of 100/5 amp complete all as specified and directed by the Engineer-in-charge. Make: - Crompton Greaves/L&T/Schneider

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

Supply and lay for 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 etc complete from trenches/ Poles/ Surface complete all as specified and directed by the Engineer-in-charge.

Supply and lay for XLPE insulated sheathed earthed pvc bedded galvanised 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 etc complete from trenches/ Poles/ Surface complete all as specified and directed by the Engineer-in-charge. Note for Item No. 31 & 32 :- Excavation , Returning filling and removal of soil shall be measured and paid seperately.

M/L 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.

M/L 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.

M/L for XLPE cable jointing kit end termination heat shrinkable type in door type suitable for U/G cable 120 sqmm to 185 sqmm 3 core 11000 volt grade complete all as specified and directed by the Engineer-in-charge.

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

Supply , fill and spread locally available dry sand, compacting for sand cushioning of Under ground cable complete all as specified and directed by the Engineer-in-charge. Note: Punned thickness shall only be measured for 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.

Excavation in trenches not exceeding 1.5 meter wide and not exceeding 1.5 meter depth and getting out in soft/loose soil / floor and making good the disturbed surfaces all as directed and specified

Returning and filling of soil including spreading leveling, watering and ramming in layers not exceeding 25 cm .

Removing excavated soil to a distance not exceeding 50 meter, not exceeding 1.5 meter above the starting point and depositing where directed.

Supply and laying GI tubing 100mm dia light grade as cable protection in road cutting including taking down of old GI tubing etc complete all as specified and directed by the Engineer-in-charge.

M & L for fault detection 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:(i) 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. where as cable joints shall be measured and paid separately.

Supply, install, test and commissioning of Multifunctional demand monitoring meter suitable for 11 KV including connected meter control wiring complete all as specified. Make: AE/ MCCO/ Havells

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.

Supply & fixing in repair of laminated fibre board of size 3 1/2' x 2 1/2' outer covered by aluminium strip including writing DG set details in bold blue & red or black coloured letters ie Sr. No, Manufacturers name, capacity, RPM, HP, head, KW, volts, Amps, Make both DG Set & alternator separately complete all as specified and as directed.

M&L for fabrication in repair of glow sign board rectangular type made out of acrylic sheet of size 4' x 3' and steel pipe 50mm dia 8' height for fixing the board in Power houses & MRS including writing details in bold blue & red & black coloured letters complete all as specified and as directed.

General note:- The contractor shall visit the site before quoting the tender &get acquaint himself regarding the make/ type of transformer / SF6/ VCB etc, inorder to get a clear knowledge of site & quote accordingly. Nothing extra shall be admissible on this account please.

Toffy Construction