REPAIR/MAINT OF TRANSFORMERS, SERVICE CABLES, LT PANELS, GODs/LT POLES AND OTHER E/M RELATED WORKS AT AOP AREA UNDER GE NASIK ROAD CAMP

Amount

M & L for taking down the transformer outdoor/indoor/ of any make and any capacity size from its base plinth/pole/substation after disconnecting incomming and outgoing HT/LT connnection, earthing and carefully removing the transformer from pole/ structure/ plinth/substation with arrnagement of mobile crane, transporting the transfomer from substaions to workshop for necessary maintenance/ repair.

M& L for dismentaling & re-assembling carefully electrical connection from HT/LT sides of the transformer keeping them at safe side and taking out the transformer core for carrying out complete overhauling which shall complete of the following :- (a) Opening top cover of the transformer by unscrewing nuts, bolts,washers etc including disconnecting core assy from HT/LT bushing and lifting the same gently and taking out from the shell (container/body) of the transformer. (b) M&L for draining out transformer oil from the above said transformer in the suitable capacity of container/drums and keeping it in safe custody for reuse. (c) M&L for cleaning of the transformer body from inside, removing deposited dirt/sludge/foreign particles etc from the bottom/body of the transformer and drying/heating up the shell from inside before refilling of the transformer oil.

(d) Cleaning/washing through core and windings of the transformer by hosing down with clean dry oil conforming IS 335/983,removing deposited dirt sludge/foreign particles from the windings/core and revarnishing of the windings with super varnish including heating/drying/packing complete carefully and throughly inside the heating chamber at suitable temperature to obtained required value of insulation resistance etc all as per IS and directed by Engr-in-charge (e) Lifting and refixing core assy inside the transformer shell gently and carefully,connecting of HT/LT/Neutral connections to the bushings assy,fixing of the tap change over incl tightenting of nut,bolts,washers of the core to reduce humming noise all as directed. (f) Refilling the transformer oil in the shell of transformer only after carrying out filteration by heating upto oil 105 degree certigrade to active reqd dielectric strength and submitting the test result before and after filteration of oil in presence of Engr-In-Charge on proper performa duly signed. (g) Refixing the top cover incl tightenting of nut bolt,washers etc all as directed by Engr-In-Charge.

Note:- (i) Any damage to insulator/bushes/windings etc while in the custody of the contractor shall be made good at no extra cost to govt.The serviceability of the transformer shall be checked and confirmed by the contractor before taking into his custody. (ii) The job taken for repair/overhauling should be complete with in 48 hours from the date of handing over the individual transformer, for that period contractor will make arrnagement for transformer of same capacity for temporary installation at site for smooth functioning without hindrance during the maintenance of the transformer to be carried at no extra cost. (iii) Rewinding of HV/LV coil & re-insulation of winding of HV/LV coil will be paid seperately under relavant item of sch. (iv) Filtration of old T/F oil will be measured under relevant item of this schedule. v) If of old transformer oil found not in reusable condition by Engr-In-Charge after testing , new transformer oil will be filled which will be paid seperately under relavant item of sch. vi) Any new item incorporated while carrying out repair will be paid seperately under relavant item of sch. vii) After Repairing transformer testing will be carried out as per IE rules infront of Engr-In-Charge & all testing report will be submitted by contractor duly signed by Engr-In- Charge and Contractor.

Supply AND FILLING transformer oil of approved quality ISI marked for filling in transformer for topping up/ REPLACEMENT IN TRANSFORMER COMPLETE all as directed by Engr-in-Charge NOTE: i) Dielectric strength of transformer oil not less than 60 kv with 2.5mm gap. ii) New transformer oil filled to transformer after filtration only, rate for filtration deemed include in the quoted rate. iii) Oil supply to the deptt for filling in a sealed barrel only.

M & L for transporting the repaired transformer from the factory/ workshop to the site with the help of crane and transportation and installing testing and commissioning complete on full load all as specified and directed.

M & Labour for removing the HV coil from core carefully & re-insulation of HV coil with same class of insulation all as specified & directed by Engr-in-charge .

M & Labour for removing the LV coil from core carefully & re-insulation of LV coil with same class of insulation all as specified & directed by Engr-in-charge .

M&L for rewinding of HV coil with new material of same gauge & same class of material of existing coil with similar class of existing insulation all as specified & directed by Engr-in-charge for transformer.

M&L for rewinding of LV coil with new material of same gauge & same class of material of existing coil with similar class of existing insulation all as specified & directed by Engr-in-charge for transformer.

M & L for replacement of unserviceable/ leaked gasket cork sheet of top cover of the transformer body of HV & LV ,oil rubber bushing irrespective of types and fix new gasket coek sheet etc all as directed.

M&L for replacement of CRGO Core with new material of same gauge & same class of material of existing CRGO Core all as specified & directed by Engr-in-charge for transformer.

M& L for replacement of unserviceable HV pocelain bushing 12 KV with top caps (Brass) complete with at site/workshop etc for the transformer including taking out existing bushings, drain out transformer oil etc and REFILLING THE SAME.

M& L for replacement of unserviceable HV Bushing terminal rod with washer of brass of suitable dia & length for transformer terminal with BRASS nut and bolts and washers 8 nos complete with oil seal, gaskets, ring washer etc for the transformers including taking out existing bushings complete allas directed at site

M& L for replacement of unserviceable LV Bushing terminal rod with washer of brass of suitable dia & length for transformer terminal with BRASS nut and bolts and washers 8 nos complete with oil seal, gaskets, ring washer etc for the transformers including taking out existing bushings complete allas directed at site

M & L for replacement of tap changer assembly and replacement of worn out nuts and bolts and providing new copper lead for tap changer assembly for transformer of any capacity all as diected by Engr-In- Charge

Supply and fix breather of transformer of various capacities filled with silica gel including taking out of unserviceable silaca gel complete all as directed by Engineer - in - charge.

M & L for replacement of old silica Gel for dehydrating Breather of T/F cleaning the breather internally and externally and filling new silica gel blue colour in dehydrating breather.

M & L for replacement of old oil level indicator glass for transformer of any capacity all as diected by Engr-In- Charge

M & L for replacement of old explosive vent Dia for transformer of any capacity all as diected by Engr-In- Charge

M & L for replacement of old Brizzing Rod for transformer of any capacity all as diected by Engr-In- Charge

M & L for replacement of old Cotton tape for transformer of any capacity all as directed by Engr-In- Charge

M & L for replacement of old webbling tape for transformer of any capacity all as diected by Engr-In- Charge

S&F air break gang operated horizental isolator double break triple pole mechanically operated mounted on double post insulator and steel frame out door type suitable for horizental/verticalinstallationdouble brake provided with locking arrangement, consisting of MS Channel,HT post type insulator 2 nos in each phase , copper alloy high pressure assembly, operating rod of 40/32 mm dia GI pipe heavy grade including required modification of MSchannels angle as for 33000 volt, 400 Amps short time withstand current 72 KA for 3 sec complete all as specified.

M&L for disconnecting carefully electrical connection from 11 KV HT sides of the POTENTIAL transformer indoor type of capacity 11 KV mounted on VCB at 11 KV sub stn AOP feeder , keeping the disconnected connections at safe side & supply and fix in repairs 11KV Indoor Potential Transformer oil immersed type Epoxy Resin Cast having following specification :- (a) 2705/BS 3938, ratio : 50/5/5 Amp, S.T.C : 18.4 kA for 0.5 Sec burden class core 1-15 VA /1.0 class , core 2-15 VA/5P10, HSV-12 KV as per IE Rules. (b) Frequency 50 Hz

M&L for 11 KV Lightening Arrestor expulsion type complete with all fittings transmission class discharge capacity 65 Kilo Amps all as specified and directed.

Supply , laying and testing XLPE insulated screened PVC bedded galvanised steel strip armoured electric power cable (Heavy duty ) with aluminium conductor 11000 volts grade lay in trenches , ducts , along pole, along transformer cross sectional area 3 core 95 sqmm complete all as specified and directed.

M&L for cable jointing kit for 11 KV ( Earthed) grade cable for outdoor termination Heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 3 core 95 sqmm all as specified and directed by Engr-in-Charge

M&L for cable jointing kit for 11 KV ( Earthed) grade cable for straight through heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 3 core 95 sqmm all as specified and directed by Engr-in-Charge

S & F Switch air break gang operated triple pole mechanically operated mounted on insulator and steel frame out door type suitable for vertical installation single brake provided with locking arrangement, consisting of MS channel ,HT post type insulator ,copper alloy high pressure assembly ,operating rod of GI pipe medium grade confirming to IS-1818 of 1972 ,suitable for 11000 volt ,400 Amps incl dismantling of old one all as specified.

S & F Cross arms ,bracings,supports,clamps and back plate fabricated from structural steel sections including nuts ,bolts, in any shape or size as indicated or directed and inclusive of two coat of aluminium paint over a coat of red oxide .

EXCAVATION BY TENCHLESS TECH - Boring of holes under road, pavement, hard standing by trenchless technology using ultra sound technique and necessary machine including HDPE pipe of 150 mm dia. Suitable for 0.4 mpa working pressure.

Material and labour for Double Walled Corrugated DWC HDPE Pipe of outer dia 90mm and innter dia 75mm including 90 degree bends with coupler and rubber ring laid in trenches of size 90 mm suitable for cable protection complete all as specified and directed.

S& F XLPE insulated 3.5 core 120 sqmm armoured and pvc sheated heavy duty electric cable size of following sizes aluminium conductor 1100 volt grade as per IS 7098 (Part-1) 1988 with latest amendment laid in tranches passing through pipes /ducts including testing complete note- rate is inclusive of cable gland & cable lugs

All as per item No 32 above but 3.5 core 70 Sqmm

Excavation in trenches in soft / loose soil not exceeding 1.5 mtr deep and not exceeding 1.5 mtr wide for laying of cable, RCC poles / stays and struts etc. and getting out including trimming sides and forming bottom surface complete all as specified and directed at site.

Returning & filling in, including spreading and leveling, watering and well ramming in layers n.exc. 25cm all as specified and directed by Engr-in-Charge.

Removing excavated soil n.exc 50 mtr and depositing where directed at a level n. exe 1.5mtr above the starting point all as specified and directed.

M&L for Earthing with 600X600X6 mm thick , galvanised steel earth plate electrode buried vertically in ground (Earth pit not less than 2.25 meter deep below normal ground level ) with top edge of plate vertically at a depth ,not less than 1.5 m below ground level connected to and including GI strip of size 32X6 mm by means of bolts,nuts,check nuts, And washer of galvanised steel, Gi shrip to be provide upto the extent of 7.5 m GI strip to be duly connected to metalic bodies of HT/LT equipment with provision of mixture of charcoal dust & common salt packed all ground the earth plate upto MS funnel with wire mesh provided inside concrete earth pit for watering arrangement,complete all as shown on electrical plate no.3 of SSR Part I (2009) and testing on completion.

S & F MCCB 4 pole in LT Panel thermal magnetic setting of current amp 250 A , breaking capacity 25kA, of complete with lugs ,spreader link, gland to cable complete all as specified and directed.

NOTE :- AMOUNT OF SCHEDULE OF CREDIT RS. 34,505.00 WILL BE DEDUCTED FROM TOTAL AMOUNT OF BOQ.

MAHIMA CONSTRUCTION

SHRI SWAPNAYOG ENTERPRISES

Bidder Name

MAHIMA CONSTRUCTION

SHRI SWAPNAYOG ENTERPRISES

DURGAI ELECTRICALS