REPAIR AND OVERHAULING TO TRANSFORMERS HT PANEL CABLE AND ALLIED ITEMS AT HQ CIF (U) UNDER AGE (I) CIF (U) REASI

Amount

Excavation in trenches n.exc. 1.5 m tr in width and n.exc 1.5m in depth and getting out in any type of soil for laying of cables, foundation of poles stay etc complete all as specified and directed.

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

Removing surplus spoil to a distance not exceeding 50m and deposited where directed at a level not exceeding 1.50m from the starting point.

M&L for spreading 40 mm graded stone aggregate deposited, spread and leveled in layers not exceeding 15 cm thick through out the sub station, complete all as specified.

Brick work with sub class "B" bricks straight or curved on plan exceeding 6 metre mean radius in cement mortar 1:4, all as specified.

S&F in repair steel tubes ISI marked light grade galvanized with all fittings fixed to walls/ poles/ laid in road crossing etc as required of size 80 mm bore complete all as specified.

MS Cross arms, bracings, supports, clamp and back plates fabricated from structural steel section including nuts, bolts, washers, welding, bending cold or hot drilling holes for bolts in any type, shape or as indicated and inclusive of one coat of red oxide and one coat of aluminium paint including taking down existing unserviceable rusted/worn out MS cross arm, angle, clamps, nuts, bolys and washers etc complete all as specified.

S&F in repair pin type porcelain vitreous brown insulator 150 mm high including one galvanized mild steel spindle, two GI washers and GI nut suitable for 11000 volts grade complete all as specified.

S&F in repair disc type insulator, porcelain, vitreous 145 mm high & 255 mm dia ball & socket type brown, single disc assembly for tension with tension clamps for conductors of working voltage 11 KV complete all as specified.

S&F in repair loop type insulator, porcelain, vitreous white brown or green, large size with over all dimensions 90 X 140 mm and clearance dia of hole 25.5 mm complete all as specified.

Stay assembly with accessories and GI stay rod 20 mm dia 1900 mm long, stay wire 7/4 mm stranded galvanised including mild steel stay plate 300 mm x 300 mm 6 mm and galvanised thimble, galvanised steel 14 mm dia 400 mm long stay bow and GI nuts, washers including loop type insulator vitreous porcelain white, brown or green big size withoverall dimensions 90 mm x 140 mm clearance of hole 25.5 mm complete all as specified and shown in electrical plate No 01 of SSR Part - I including taking down old unserviceable stay assembly (Excavation, stay clamps and concrete work etc will be measured and paid separately)

ACSR conductor of any size and type from over head LT/HT poles including binding at site to insulator with suitable size of binding wire etc including taking down existing worn out old broken ACSR conductor of any size and type and length at any position from LT/HT poles complete all as specified.

Taking down existing worn out/rusted GI earth wire, cradles, guards of any size and shape at any position from LT/HT poles and pre stressed concrete poles 09 meters long and stretching new GI earth wire 8 SWG (4 mm dia) on LT/HT poles for continuous earth wire/guards and cradles (hexagonal/ rectangular) including 1.6 mm GI binding wire etc complete all as specified.

S&F in renewal outdoor type, triple pole mechanically operated, mounted on insulators and steel frame, with operating mechanism worked from ground level vertical/ horizontal mounting air break switch 11 KV, 200 amps consisting of hot dip galvanized channel iron base having 3 Nos 11 KV post insulators per phase, copper or copper alloy high pressure heavily tinned contacts plated MS arcing horn capable of breaking the magnetizing current with horizontal connecting bar GI pipe as down rod levers coupling and operating handle with locking arrangements manufactured as per IS: 9921 with and including operating rod of 25 mm bore medium grade GI pipe of suitable length to operate from ground level complete all as specified. Make- PACTIL/ BHEL/ MEI or equivalent in approved makes.

S&F in repair Cable end termination joint indoor cold shrinkable type suitable for stranded aluminium conductor 3 core, 11 KV XLPE 70-120 Sq mm cross sectional area including testing and commissioning etc complete all as specified.

S&F in repair Cable end termination joint outdoor cold shrinkable type suitable for stranded aluminium conductor 3 core, 11 KV XLPE 70-120 Sq mm cross sectional area including testing and commissioning etc complete all as specified.

S&F Cable end termination joint outdoor cold shrinkable type suitable for stranded aluminium conductor 3 core, 11 KV XLPE 120-185 Sq mm cross sectional area including testing and commissioning etc complete all as specified.

Supplying, laying, testing and commissioning XLPE insulated screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (Heavy duty) with stranded aluminum conductor 11 KV grade (Earthed system) laid in trenches/ on pole / in ducts or through sleeves of size 95 sqmm 3 core including taking out existing cable complete all as specified.

Demolition of brickwork or stone boulder masonary built in cement mortar including all quoins, arches, pillars etc complete all as specified and as directed by Engineer -in-Charge.

M&L for painting of 11.0 m long swaged poles with cross arm/clamps with aluminium paint one under coat and one finishing coat after preparation of old steel surfaces including making of alternate colour bands red & white 30 cms width upto a height of 1.5 m from pole coping with synthetic enameled paint & writing pole numbers on round base of 125 mm dia with yellow synthetic paint complete all as specified.

S&F in renewal of post insulator 11 KV grade complete all as specified.

Opening/ stripping of the step down transformer, 11 KV/0.433 KV, draining of oil, lifting the core & coil assembly, washing and cleaning dust, dirt & sludge deposit from all parts, servicing of tap changer making internal connections and re-assembling the transformer after repair work, providing new cork sheet gasket packing 5 mm thick, nuts, bolts washers etc as required, transportation, loading, unloading from substation to workshop & back including its installation at original or any other place, testing & commissioning complete for capacity:-

50 KVA to 100 KVA

150 KVA to 250 KVA

Renewal of HV coil (11 KV) wound with super enameled copper wire of same gauge including necessary insulating materials and baking the coil in vacuum furnace upto 400 KVA capacity transformers complete all as specified.

Reconditioning of copper wound MV coil (433 V) including necessary insulating materials and baking coil in vacuum furnace upto 400 KVA capacity transformers complete all as specified.

M&L for shifting of transformer upto 200 KVA capacity after disconnection from one location to another for restoration of supply during failure of transformer of any location or re-distribution of load as required including connection and commissioning of shifted transformer and disconnection & setting aside existing transformer complete all as specified.

M&L for opening up top cover of transformers installed in position, disconnecting connections and reconnecting after renewal of worn out/ defective parts, re-fixing the top cover in position including new best quality cork sheet gasket (not less than 5 mm thick) complete all as specified. Note: Renewal of worn out / defective parts are measured and paid seperately.

50 KVA to 100 KVA

150 KVA to 250 KVA

S&F in repairs HV bushing of 12 KV grade with gasket suitable for transformer of following capacities:-

50 KVA to 100 KVA

150 KVA to 250 KVA

S&F in repairs LV bushing of 1.1 KV grade with gasket suitable for transformer of following capacities:-

50 KVA to 100 KVA

150 KVA to 250 KVA

S&F in repairs HV brass set stem of 12 KV grade suitable for transformer of following capacities:-

50 KVA to 100 KVA

150 KVA to 250 KVA

S&F in repairs LV brass set stem of 1.1 KV grade suitable for transformer of following capacitates:-

50 KVA to 100 KVA

150 KVA to 250 KVA

M&L for preparation of old painted surface of transformer & spray painting with two coats of synthetic enameled grey paint complete for the following capacities:-

Upto 100 KVA

150 KVA to 250 KVA

M&L for filtration/ dehydration of insulating oil of transformer in position to achieve dielectric strength 50 KV or above (when tested with 2.5 mm gap electrode) complete all as specified.

Supplying and filling for topping up of deficient oil level of transformers with new transformer oil after filtration/ dehydration to achieve dielectric strength 50 KV or above complete all as specified.

S&F in renewal transformer breather assembly oil seal type made of cast aluminum body powder coated as per RAL 7032 shade filled with silica gel of capacity 500 grams complete all as specified.

S&F in renewal oil level indicator clean prismatic type with necessary gasket etc in renewal suitable for transformer up to 250 KVA capacity complete all as specified

S&F in repair drop out fuse link 11 KV, 100 amps consisting of channel galvanized iron base, having 2 Nos 11 KV post insulators per phase including fuse carrier of SRBP tube with heavily tinned non ferrous metal parts & spring loaded phosphor bronze contact manufactured as per IS: 9385 complete all as specified. Make- PACTIL/ BHEL/ ABB or equivalent in approved makes.

Servicing of existing air break switches 11 KV including renewal of worn out nuts, bolts, washers etc & providing petroleum jelly for smooth operation complete all as specified.

M&L trimming tree branches upto 100 mm girth of any location around existing HT/ LT OH lines giving clearance of 1.5 m on all sides complete all as specified. Note- Trimming of tree shall be measured as one unit.

Providing labour and tools for cleaning the sub station open areas, removing grass, shrub, roots, stone/ brick bats etc by surface excavation not exceeding 30 cm deep, leveling the area and keeping it maintained upto the date of completion of contract complete all as specified.

Dry sand cushioning to under ground electric cable on layer of 8cm thick before laying the cable and second layer of 15cm thick after laying the cable all as specified in clause 19.75 of M.E.S Schedule Part-I (2009). Note:-Sand shall be fine sand as specified for plastering.

Supply and laying Sub Class 'B' common burnt bricks, old size, designated 75, laid dry, flat with width equal to length of brick & with gaps between the adjucent bricks not exceeding 10mm as cover laid over the cable to give mechanical protection to under ground cable complete all as specified & directed.

After taking proper shut down, strip opening of HT 11 KV VCB panel, complete cleaning the panel with air blower, adjusting and tightening of bus bars, repair and adjustment of operating mechanism, replacement warn out indicators and testing complete all as specified.

Earthing complete with galvanised steel earth plate electrode 60cmx60cmx6mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below normal ground level) with top edge of plate not less than 1.5 mtr below ground level, connecting to GI wire 4.0mm dia (as earth lead wire), by means of bolt, nuts , check nuts and washer of GI and earth wire protected by provision of GI pipe medium grade, 15mm bore upto 7.5 mtr length including provn of concrete pit in PCC (1:2:4) type B-1 using 20mm graded crushed stone aggregates with 40mm thick cover of RCC (1:2:4) reinforced with XPM (weight not less than 4 kg/Sqm) and frame of angle iron 25x25x3mm with lugs 2 Nos and with 6mm dia MS bar handle made to shape, GI medium grade 20mm bore pipe for watering perforated at bottom 1.75 mtr long placed on top edge of earth plate, common salt and charcoal filling, test point made out of 17mm x 8mm FI with fixing arrangement, funnel, wire mesh and earth work in hard/dense soil, returning filling in and removal of surplus soil to a distance not exceeding 50 mtr, all as per electrical plate No. 5 of SSR 2009 Part-I and connection to earth test point all as specified and testing on completion.

MAMTA ENTERPRISES

VARDHMAN INTERNATIONAL