REPAIRS/REPLACEMENT OF HT 11 KV ELECTRICAL INSTALLATIONS CONSISTING OF TRANSFORMER, VCB, HT OH LINE, HT UG CABLE, HT POLES AND CONNECTED ACCESSORIES UNDER GE WELLINGTON

Amount

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.5m in depth and getting out in soft/loose soil for laying of under ground cable and foundation of poles.etc complete all as specified and as directed.

Excavation in trenches exceeding 1.5m wide and not exceeding 3.0 m in depth and getting out in soft/loose soil for laying of under ground cable and foundation of poles etc complete all as specified and as directed.

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

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

M&L Sand cushioning to PVC cable using riddled sand or river sand for cable protection gently punned below / around cable in trenches/ducts complete as specified and as directed. (Note: Punned thickness only shall be measured and paid only)

M&L for Precast concrete cable covers, class HV, type 1, flat, size 300 mm x 180 mm x 40 mm including taking down of old unserviceable complete as specified and as directed.

M&L for Plain cement concrete 1:4:8, type D2 using 40mm graded stone aggregate in foundation of steel poles/struts as specified including necessary form work complete as specified and as directed.

M&L for cement concrete 1:3:6, type C2 with 40 mm graded stone aggregate for coping/road crossing including form work and finishing to all exposed surfaces by using extra cement complete as specified and as directed.

S&F GI light grade pipe100 mm bore for cable protection complete with all fittings fixed to wall or laid in floor/road crossing or on pole including taking up or down old unserviceable tubings complete all as specified and directed.

Disconnecting and removing the existing HT 11 KV cable of size 3 core 95 Sqmm to 185 Sqmm for re-routing or extending and re-laying the same complete all as specified and directed. Note: 1) Necessary excavation and earth work, sand cushion, PCC cable cover, GI protection pipe for re-laying will be measured and paid separately. -2) Additional cable and joints required will be measured and paid separately.

Supply, Laying and testing XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cable heavy duty with aluminium conductor 1100 volts grade of size cross sectional area 95 Sqmm, 3 core including taking out the unserviceable HT Cable from the trench/surface/pole complete all as specified and as directed.

M&L 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 185 Sqmm complete all as specified and as directed.

All as per Item No 12.00 hereinbefore but for 3 core XLPE armoured aluminium conductor cable of size 95 Sqmm complete all as specified and as directed.

M&L Straight through cable jointing kit for 1100 volts grade cable complete with jointing material heat shrinkable and accessories suitable for 3 core XLPE, PVC insulated armoured aluminium conductor cable of size 185 Sqmm complete all as specified and as directed.

All as per Item No 14.00 hereinbefore but for XLPE armoured aluminium conductor cable of size 3 core 95 Sqmm complete all as specified and as directed.

S&F steel tubular swaged poles complete with cast iron base plate, final taper plug, bolts, nuts and screws as specified type 410 SP-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 unserviceable steel poles/ struts any size all as specified and directed. Note - Excavation, earth work and PCC shall be measured and paid separately.

M&L 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 directed.

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

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

S&F disc type insulator, porcelain, vitreous white, brown or green insulator 145 mm height 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.

M&L for overhead electric ACSR conductor including stringing in position including dismantling of ACSR complete all as specified and directed.

M&L for replacement of galvanised steel wire 4 mm dia/8mm dia for guard wire, continuous earth wire complete all as specified and directed.

M&L for repairing 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 complete as specified and as directed.

M&L for Switch Air break Gang operated , triple pole , mechanically operated mounted on insulator and steel frame, with operating mechanism worked from ground level, for current rating up to 400 Amps 11000 Volts complete including dismantling of old unserviceable all as specified and as directed.

M&L for Lightning arrestors for 11 KV grade of discharge capacity, 65 KA, complete with all fittings, station class complete fixed in repairs complete as specified and as directed.

S&F in replacement for expulsion fuse (DO Fuse) single pole 11 KV 100 Amps all as specified and directed.

M&L for stay assembly complete with accessories as shown in electrical plate No 1 with stay rod 16 mm dia including dismantling the old unserviceable stay complete all as specified and directed by Engr-in-Charge. Note : Excavation and concrete shall be measured and paid separately.

M&L for Earthing complete with galvanized steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground (earth pit not less than 2.25 m deep below ground level) with top edge of the plate not less than 1.5 m below normal ground level, connected to galvanized earth strip of size 32 x 6 mm by means of bolts, nuts, check nuts and washers of galvanized iron or steel complete with GI pipe Light grade 40mm dia as earth strip protection pipe up to 7.5 mtr length , GI pipe medium grade 20mm dia as watering pipe with funnel and wire mesh, PCC chamber with 10mm thick RCC coverall as shown in electrical plate No 3 connected to earth testing point including necessary excavation, earth work, PCC pit ,RCC cover, funnel ,watering pipe etc all as specified and as directed including testing on completion.

M&L for Earthing complete with galvanized steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground (earth pit not less than 2.25 m deep below ground level) with top edge of the plate not less than 1.5 m below normal ground level, connected to galvanized earth wire of 4mm dia by means of bolts, nuts, check nuts and washers of galvanized iron or steel complete with GI pipe Light grade 15mm dia as earth strip protection pipe up to 7.5 mtr length , GI pipe medium grade 20mm dia as watering pipe with funnel and wire mesh, PCC chamber with 10mm thick RCC cover all as shown in electrical plate No 5 connected to earth testing point all as specified or indicated including testing on completion all as specified and as directed.

S&F in replacement Galvanised iron strip 32x6 mm as earth continuity or main earthing lead fixed to wall / pole / buried in ground etc complete all as specified and directed

S&F GI Pipe light grade 40mm dia as earth lead protection fixed on wall / pole /laid on floor etc including taking up or down old unserviceable tubings complete all as specified and directed.

Decarbonising/cleaning of complete HT panels board, 11 KV cubicle type, consists of bus bar chamber, circuit chamber and metering chambers, by opening the spout/bus covers inspecting the bus bar joints, cleaning of bus bars, checking the bus bar spouts and circuit spouts for any flash covers/tracks, applying Becktol red solution to the bus bars and spouts having moderate tracking, replacement of bus bar/circuit spouts in case of spouts subjects to heavy tracking, applying HT insulated red compounds/Monoplist compound at the bus bard joints after tightening of joints, cleaning of bus bar insulators and bus bars with CTC and ensure proper decarbonisation and re-assembling complete all as directed by Engineer-in-Charge.

M&L for dehydration/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 40 KV for 2.5 mm gap 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.

S&F HT Bushing insulator with brass spindle, nuts, check nuts & washers etc suitable for outdoor type transformer of capacity up to 400 KVA including taking down u/s from the transformer complete as specified and as directed.

S&F LT Bushing insulator with brass spindle, nuts, check nuts & washers etc suitable for outdoor type transformer of capacity up to 400 KVA including taking down u/s from the transformer complete as specified and as directed.

Supply and fill topping oil of grade 50 KV in transformers and oil circuit breakers to make up to the level complete all as specified and as directed.

Supply and fill new silica gel from breather of transformer including taking down existing unserviceable silica gel complete complete as specified and as directed.

Supply and fill new breather assembly including taking down existing unserviceable breather assembly of transformer and complete as specified and as directed.

M&L for Repair/Servicing of transformer outdoor type 11 KV/433 V, 100 KVA to 315 KVA capacity by disconnecting all connections, taking to a reputed work shop, strip open, disconnecting the terminal connections, removing and taking out the winding with core, varnishng the winding and heating, draining out the old transformer oil, removing the deposit from the tank, cleaning the tank using suitable cleaning agent , re-installing the coil with core, re-assembling , re-connecting the coil to the HT/LT terminals, closing the top cover including supply and replacing complete gaskets and filling of Transformer oil up to required level, transporting back original location, connecting, testing and commissioning complete as specified and as directed. Note - Copper winding, Transformer oil, HT/lLT rods & bushing, painting ,breather assembly etc as required will be measured and paid in the relevant items.

S&F new copper winding with core including taking out old burnt winding complete as specified and as directed.

M&L for painting 4 pole structure up to 11 mtr swaged steel tubular poles complete with cross arms, brackets, clamps etc with one coat of aluminium paint including preparation of old painted surfaces and pasting radium red stickers / paint with 3 lines around the pole and including marking pole numbers with synthetic enamel white paint on black base complete all as specified and directed.

All as per Item No 41.00 herein before but for painting to 2 pole structure complete all as specified and directed.

M&L for painting the external exposed surfaces of steel tubular swaged / rails pole of 9/11 mtrs long along with cross arm, brackets and connected accessories with one coat of aluminium paint including preparation of old painted surfaces and pasting radium red stickers / paint with 3 lines around the pole and including marking pole numbers with synthetic enamel white paint on black base complete all as specified and directed.

M&L for loose filling of 40 mm graded stone aggregates as in plinth of out door transformer, sub stations, panel boards yard complete all as specified and as directed.

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M.V.K.ENTERPRISES