REPAIRS AND MAINT TO 11KV TRANSFORMER AND ELECT SUPPLY INSTALLATION WITH CONNECTED WORKS UNDER GE WELLINGTON

Amount

Excavating in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth for laying of LT UG cable, pipe, pole, stay, locating fault etc and not exceeding 10sqm on plan and getting out in any type of strata including taking out and removal of old bricks laid over for protection of cable all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm complete all as specified and directed.

Removing excavated soil not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and as directed.

Supply and spreading riddled clean dry earth soil sand free from stone and other impurities in trenches for cushioning including levelling and hand punning to under ground cable on top and bottom of cable all as specified and directed. Note: Only punned thickness will be measured and paid.

Supply and lay un-reinforced precast concrete cable cover, class HV, type 1, flat unreinforced of size 300mm x 180mm x 40mm for protection of cable abutting each laid dry flat width equal to the length of cable cover etc complete all as specified and as directed.

Material and labour for Plain Cement Concrete 1:4:8 type D-2, using 40mm graded stone aggregate as in foundation, filling and mass concrete including necessary form work all as specified and as directed.

Material and labour for Plain Cement Concrete 1:3:6 type C-2, using 40mm graded stone aggregate as in coping of pole, filling in trenches of road cutting and mass concrete including form work and finishing to all exposed surfaces by using extra cement etc complete all as specified and as directed.

Supply and laying in replacement in trenches 100 mm dia GI pipe light grade for cable protection complete with all fittings, fixed to wall or laid in floor / road crossing or on pole all as specified and as directed.

Supply, lay in trenches or fixed to wall / pole or passing through pipes or road crossing, testing and commissioning of HT XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty) with aluminium conductor, 6.35/11KV (E) grade, suitable for earthed system, with aluminium conductor of size 95 Sqmm 3 core including taking down unserviceable HT cable of any type / size/ description , etc complete all specified and as directed. Note : Excavation & Earth work shall be measured and paid separately.

Supply and replace cable route indicator made out of cast iron 100mm dia duly embossed as HT 11 KV with 32mm x 6 mm MS angle welded and fixed with PCC 1:3:6, type C1 using 20mm graded stone aggregate bed blocks etc complete all as specified and directed

Material and labour for cable end termination 11 KV, HT (Cold Shrinkable) cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120/185 Sqmm complete all as specified and as directed.

Material and labour for cable end termination 11 KV, HT (Cold Shrinkable) cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 Sqmm complete all as specified and as directed.

Material and labour for cable jointing kit for 11 KV (Earthed) grade cable for straight through Cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120/185 Sqmm complete all as specified and as directed

Material and labour for cable jointing kit for 11 KV (Earthed) grade cable for straight through Cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 Sqmm complete all as specified and as directed

Supply and install steel tubular swaged poles complete with cast iron base plate, final taper plug, bolts, nuts and screws as specified type 410SP-55 (11.0 meter long) and including painting with two coats of aluminium paint over one coat of red oxide and black bituminous paint on the hidden surface in foundation including drilling of holes for fixing of D Iron clamp and holes for continuous GI earth wire as required complete including dismantling of old unsv steel poles/ struts any size all as specified and as directed

Dismantling of insulators any type and any size etc complete as specified and as directed.

Supply and fix Pin type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150 mm height, 150 mm dia for 11000 volts grade etc complete all as specified and as directed.

Supply and fix disc type insulator, porcelain, vitreous 145 mm high and 255 mm dia ball and socket type, white, brown or green with tension clamps for conductors, working pressure 11000 volts complete as specified and as directed.

Material and labour for Aluminium conductor, steel reinforced including stringing in position including dismantling of ACSR complete all as specified and directed by Engineer-in-Charge

Material and labour for replacement of galvanised steel wire 4mm dia (8 SWG) for guard wire, continuous earth wire complete all as specified and directed.

Material and labour for cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, one under coat and one finishing coat of paint including dismantling of cross arms of MS channel or angle sections etc complete all as specified and as directed.

Material and labour for Servicing the existing Gang operated Air Break switch, operated from ground of capacity 200/ 400 Amps, 11 KV, 3 Pole, including greasing, replacing worn out/ rusted nuts, bolts, washers, etc. and providing coloured sleeves for jumper connections etc complete all as specified and as directed.

Supply and fix Air Break, Gang operated Triple pole switches/ device, mechanically operated, mounted on insulator and steel frame, with operating mechanism of GI tubing 25 mm suitable length worked from ground level including locking accessories complete for current rating up to 400 Amps complete with 12 insulators including taking down unserviceable GOD from existing two/ four pole structure etc complete all as specified and directed.

Supply and fix lightning arresters expulsion type complete with all fittings, transmission station class of discharge capacity 65 Kilo amps complete suitable for 11000 volts including taking down existing lightning arresters from two/ four pole structure etc complete all as specified and directed.

Material and labour for expulsion fuse (DO Fuse) single pole 11000 Volts, 100 Amps including dismantling the old unserviceable fuse etc complete all as specified and as directed.

Material and labour for stay assembly complete with accessories as shown in electrical plate No 1 with stay rod 16mm dia including dismantling the old unserviceable stay assembly etc complete all as specified and as directed. Note : Excavation and concrete work shall be measured and paid separately

Material and labour Earthing complete with Galvanised steel earth plate electrode 600 x 600 x 6 mm thick buried directly in ground (in vertical position) earth pit not less than 2.25 mtr below normal ground level with the top edge of the earth plate not less than 1.5 m below ground level and connected to GI earth strip 32 x 6 mm by means of bolts, nuts, check nuts, and washers of galvanized iron including PCC pit & cover with suitable handle, including necessary excavation and earth work in any type of soil, 20 mm dia medium grade galvanized steel tube for watering with one end fixed with suitable funnel and wire mesh, 40mm bore medium grade galvanized steel tubing for drawing earth lead GI strip protection & common salt, charcoal in alternate layers etc. complete all as shown in EP No 3 of SSR Part -I and testing on completion including taking down existing earthing etc complete all as specified and as directed.

Material and labour Earthing complete with Galvanised steel earth plate electrode 600 x 600 x 6 mm thick buried directly in ground (in vertical position) earth pit not less than 2.25 mtr below normal ground level with the top edge of the earth plate not less than 1.5 m below ground level and connected to GI earth wire 4mm dia by means of bolts, nuts, check nuts, and washers of galvanized iron including PCC pit & cover with suitable handle, including necessary excavation and earth work in any type of soil, 20 mm dia medium grade galvanized steel tube for watering with one end fixed with suitable funnel and wire mesh, 15mm bore medium grade galvanized steel tubing for drawing earth lead GI wire protection & common salt, charcoal in alternate layers etc. complete all as shown in EP No 3 of SSR Part -I and testing on completion including taking down existing earthing etc complete all as specified and as directed.

NOTES for Item Nos 27.00 & 28.00: On completion of the work/ job the Contractor is to perform earth resistance tests for each earthing job in the presence of the Engineer-in-Charge or his representative & submit test certificates duly signed & certified. If the test results are not satisfactory or not within the permissible limits of relevant Standards/ IS then the job is to be redone without any extra cost to the Department till the results are satisfactory.

Material and labour for preparation of rusted surface of HT steel pole with brackets of any size/ shape/ type at any height and painting with aluminium paint and alternate colour of sky blue 3 strip and white paint 2 strip of 30cm height at bottom of the pole (1.5 Mtr from ground) and numbering the pole 5cm height black paint with back ground yellow paint 10 cm dia circle etc complete all as specified and as directed.

Material and labour for preparation of rusted surface of HT steel 4 pole structure at any height and painting with aluminium paint and alternate colour of sky blue 3 strip and white paint 2 strip of 30cm height at bottom of the pole (1.5 Mtr from ground) and numbering the pole 5cm height black paint with back ground yellow paint 10 cm dia circle etc complete all as specified and as directed.

Material and labour for preparation of rusted surface of HT steel 2 pole structure at any height and painting with aluminium paint and alternate colour of sky blue 3 strip and white paint 2 strip of 30cm height at bottom of the pole (1.5 Mtr from ground) and numbering the pole 5cm height black paint with back ground yellow paint 10 cm dia circle etc complete all as specified and as directed.

Dehydration and Filtration of oil used in transformers and oil circuit breakers by means of high pressure vacuum filtration machine to achieve the required breaking capacity and die electric strength of not less than 45KV for 2.5mm Gap etc complete all as specified and as directed. Note : (a) Before commencement of filtration of oil, the electric strength of oil in each transformer/ OCB shall be tested and report be submitted to the AGE. If the test valves are not within the desire range, then the filtration of oil shall be carried out. No separate payment for testing of oil shall be made if the oil of the transformer/ OCB is not filtered. (b) Contractor has to submit the details of the oil filtration machine to the department prior commencement of job for approval. (c) Contractor shall ensure that conservation tank is full to its level before starting the dehydration process. (d) Hire charges for machine and its transportation to the site are also deemed to be inclusive in the item rate quoted.

Supply and top up during the dehydration refer item No. 32, transformer oil (up to 65 KV ) duly filtered conforming to IS 335-1963 as amended including testing complete all as specified and as directed.

Supply and fill silica gel in the transformer breather assembly including taking out unserviceable gel complete all as specified and as directed.

Taking down existing unserviceable breather assembly of transformer and supply and fix new breather assembly including sufficient silica gel complete all as specified and as directed.

Supply and lay 63mm graded stone aggregate for surrounding of sub stations/ 4 pole structure complete all as specified and directed.

Material and labour in replacement of HT bush insulator with gasket set complete all as specified and as directed by the Engineer-in-Charge for the following:-

63/100 KVA Capacity Transformer

200/250 KVA Capacity Transformer

300/400 KVA Capacity Transformer

Material and labour in replacement of LT bush insulator with gasket set complete all as specified and as directed by the Engineer-in-Charge for the following:-

63/125 KVA Capacity Transformer

200/250 KVA Capacity Transformer

300/400 KVA Capacity Transformer

Material and labour in replacement of HT bush Gun metal Rod/ Spindle threaded complete with nuts bolts and washer complete all as specified and as directed by the Engineer-In-Charge for following:-

63/150 KVA Capacity Transformer

200/250 KVA Capacity Transformer

300/400 KVA Capacity Transformer

Material and labour in replacement of LT bush Gun metal Rod/ Spindle threaded complete with nuts bolts and washer complete all as specified and as directed by the Engineer-In-Charge for following:-

63/150 KVA Capacity Transformer

200/250 KVA Capacity Transformer

300/400 KVA Capacity Transformer

Supply and fix aluminium heavy duty long neck thimble/ lugs of size 95 Sqmm to 120 Sqmm with using crimping tool including taking out old unserviceable heavy duty long neck thimble from HT cable end and shutdown arrangement all as specified and as directed.

Shifting of Transformer capacity of 100kVA to 400kVA from substation to substation with in 500 Mtr distance by using suitable hydraulic crane etc complete all as specified and as directed.

Disconnecting of HT connections and DC connections from existing bus bar and disconnecting trolley including servicing of complete parts of VCB, cleaning with carbon tetra chloride, lubrication of mechanical parts, adjustment and calibration of complete relays etc and checking complete parts, repairs to control wiring with single core PVC insulated copper conductors of existing size as required at site of VCB of capacity 630 Amp for satisfactory running and replacement of defective spare parts, applying one coat of 11 KV insulation paint on bus bar, spouts and other connected parts and reassembling the same re-connecting all HT & AC / DC connections complete in functional order including testing on existing load complete all as specified and as directed. Note : Spare parts shall be measured and paid for separately under respective items of this schedule as supply only (in replacement). These shall be identical to those specified by original manufacturer and small parts such as nuts, bolts, screws & washers required at site are deemed to be included in the cost quoted by the contractor.

Supply and fix in replacement multifunction meter for 11 KV VCB as per existing sample complete all as specified and as directed. Make : Schneider Model Conzerv M 6459 or equivalent of L&T/ Legrand

Supply and fix in replacement indicator LED lamps as per existing colour code for 11 KV VCB & RMUs complete all as specified and as directed. Make : L&T/ AE/ Secure/ Schneider

Supply and fix in replacement Power pack with input 220-110V AC and output 24V DC of 11 kV VCB as per existing sample complete all as specified and as directed. Make: Mahamai/ Alan/ Gagate.

Supply and fix gasket of Nitrite bonded rubber cork, 6.4mm thick suitable for existing transformer at site including taking down existing complete all as specified and as directed.

shalom constructions

rvelectricals

Saket Enterprises