CWE KOTA/KOTA-02 OF 2020-21 REPAIR/MAINTENANCE OF TRANSFORMER AND ALL CONNECTED WORKS AT MIL STN KOTA

Amount

M & L for disconnecting all incoming and outgoing cables, removing the unsv transformer of capacity exceeding 50 KVA and upto & including 200 KVA from the platform / two pole structure / floor and loading it in the vehicle carefully using crane and transporting it to the workshop, carry out the required repairs including preparation of old painted exposed surfaces by removing/cleaning oil/grease, applying two coats of heat resistant synthetic enamel paint by spray painting, writing MES No and SM No on transformer with synthetic enamel paint and transport the transformer back to the site , install it, reconnect all the incoming and out going cables by properly crimping using lugs of suitable size, taping the LT / HT bushes / bus bars, using LT / HT insulation tape and testing complete of transformer, complete all as specified and directed.

M & L for disconnecting all incoming and outgoing cables, removing the unsv transformer of capacity exceeding 250 KVA and upto & including 500 KVA from the platform / two pole structure / floor and loading it in the vehicle carefully using crane and transporting it to the workshop, carry out the required repairs including preparation of old painted exposed surfaces by removing/cleaning oil/grease, applying two coats of heat resistant synthetic enamel paint by spray painting, writing MES No and SM No on transformer with synthetic enamel paint and transport the transformer back to the site , install it, reconnect all the incoming and out going cables by properly crimping using lugs of suitable size, taping the LT / HT bushes / bus bars, using LT / HT insulation tape and testing complete of transformer, complete all as specified and directed. (Note for item No 1&2: All materials required for repairs such as winding, LV/HV bushes, Silica gel breather,oils etc will be measured and paid for separately.)

Replacement of burnt/defective HT copper coil with new all as per existing size and gauge super enamelled high quality copper wires of matching size to the existing one complete all as specified and directed.

Replacement of burnt/defective LT copper coil with new all as per existing size and gauge super enamelled high quality copper wires of matching size to the existing one complete all as specified and directed

Reconditioning and overhauling LT copper coil after dismantling the HT winding from the transformer lugs reconditioning of LT coil and provising necessary material varnish, glass sleeves etc. complete all as specified and directed

Replacement of existing defective HT tap changer of suitable size with tapping arrangement 2.5% to 7.5% and one normal tapping including connecting up with HT coil and testing of transformer capacity up to 500 KVA. complete all as specified and directed

Replacement of existing defective drain out oil outlet valve of any type & size suitable for outdoor/indoor transformer type of complete all as specified and directed.

Replacement of synthetic rubberised cork sheet gasket 1/4" thick suitable for main body top cover of transformer capacity upto 500 KVA. complete all as specified and directed.

Replacement of transparent type silica gel breather assy of suitable size of transformer capacity upto 200 KVA connected to air column with conservator tank complete all as specified and directed. .

Replacement of transparent type silica gel breather assy of suitable size of transformer capacity 200 KVA to 500 KVA connected to air column with conservator tank. complete all as specified and directed.

Supply and fixing in replacement transformer oil temperature gauge 0-100 graduated. Analogue dial type complete all as specified and directed.

Dismantling and opening transformer tank over removing of worn out transformer oil tank gasket and supply, fixing of new rebberised gasket sheet 6.0 mm thick and to be pasted using gasket adhesive for the following transformer including refixing the top cover with conservator tank for transformer capacity 200 KVA. complete all as specified and directed.

Dismantling and opening transformer tank over removing of worn out transformer oil tank gasket and supply, fixing of new rebberised gasket sheet 6.0 mm thick and to be pasted using gasket adhesive for the following transformer including refixing the top cover with conservator tank for transformer capacity 200 to 500 KVA. complete all as specified and directed.

Replacement of defective/unsv HT porcelain bushing (set of three) of suitable size for transformer upto 200 KVA including washers of good quality complete all as specified and directed.

Replacement of defective/unsv HT porcelain bushing (set of three) of suitable size for transformer above 200 KVA and upto 500 KVA including washers of good quality, complete all as specified and directed.

Replacement of defective/unsv LT porcelain bushing (set of four) of suitable size for transformer upto 200 KVA including washers of good quality complete all as specified and directed.

Replacement of defective/unsv LT porcelain bushing (set of four) of suitable size for transformer above 200 KVA and upto 500 KVA including washers of good quality complete all as specified and directed.

Replacement of defective/unsv HT bush rod (set of three) made out of copper with brass nutstand washers of required length including connecting up with HT coil of transformer upto 200 KVA complete all as specified and directed.

Replacement of defective/unsv HT bush rod (set of three) made out of copper with brass nutstand washers of required length including connecting up with HT coil of transformer above 200 KVA and upto 500 KVA complete all as specified and directed.

Replacement of defective/wornout LT bush rod (set of four) made out of copper with brass nutstand washers of required length including connecting up with LT coil of transformer upto 200 KVA complete all as specified and directed.

Replacement of defective/wornout LT bush rod (set of four) made out of copper with brass nutstand washers of required length including connecting up with LT coil of transformer above 200 KVA and upto 500 KVA complete all as specified and directed.

Supply and filling as in replacement of silica jel inside the breather assembly and fixing properly with transformer complete all as specified and directed.

Cutting off worn out aluminium cable ternimal lugs from the cable, S&F of new aluminium cable lugs of suitable size and reconnecting the cable with transformer, terminal stud including dressing of cable, excavation & surface dressing after providing sand suchioning and brick protection as specified and directed.

M & L for centrifusing of old transformer oil at various locations of transformers of Capacity 50 KVA to 500 KVA installed on two pole/four pole structures in Northern, Central and Southern sector area of Kota Mil Stn by filter action using automatic centrifusing machine to achieve min 50 to 60 KV breaking voltage at 2 mm gap by absorbing and abolishing all sludge particles for use as per BS-B 66-1983 complete all as specified and directed.

Filling only new transformer in transformer/OCB at various locations in Mil Stn Kota, refixing of top cover and testing, complete all as specified and directed. Note :- transformer oil issued under Schedule 'B' free for filing.

M&L for painting of transformer up to 200KVA with two coats of Zinc chromate paint ( yellow colour) internally and externally by applying two coat of heat resistant synthetic enamel paint of grey colour by spray painting including preparation of old surfaces by removing, cleaning, of oil, grease including writing MES No and SM No on transformer with synthetic enamel paint complete all as specified and directed

M&L for painting of transformer above 200KVA and up to 500KVA with two coats of Zinc chromate paint ( yellow colour) internally and externally by applying two coat of heat resistant synthetic enamel paint of grey colour by spray painting including preparation of old surfaces by removing, cleaning, of oil, grease including writing MES No and SM No on transformer with synthetic enamel paint complete all as specified and directed.

Supply/Laying / fixing, jointing, testing and commissioning in repair under ground cable 11 KV volts grade XLPE insulated & PVC sheathed cable heavy duty armoured, with multistranded aluminium conductor laid in trenches/ ducts/ pipes/fixed on walls/poles of the following size complete, all as specified and directed.. NOTE :- (a) Excavation & earth work, shall be measured and paid for seprately under respective items catered in B/R part of the BOQ (b) GI pipe for laying of cable, sand cushioning, cable protection cover shall be measured and paid for seprately under respective items of the BOQ (c) Road cutting involved during excavation for laying of cables etc shall be made good as per existing road. Nothing extra shall be admissible on this account. Quoted rates of the item shall be inclusive of the above provisions.

3 Core, 95 sqmm.

3 Core, 185 sqmm.

M & L for outdoor type heat shrinkable cable end termination jointing kit for HT 11000 Volts(Earthed) grade cable of size 95 Sqmm, 3 core complete with jointing material and accessories complete all as specified and directed.

M & L for outdoor type heat shrinkable cable end termination jointing kit for HT 11000 Volts(Earthed) grade cable of size 185 Sqmm, 3 core complete with jointing material and accessories complete all as specified and directed.

Supplying, jointing and testing cold shrinkable type straight through jointing kit, suitable for 11KV under ground earthed system 3 core XLPE armoured aluminuim conductor cable of size 95 Sqmm, complete, all as specified and directed.

Supplying, jointing and testing cold shrinkable type straight through jointing kit, suitable for 11KV under ground earthed system 3 core XLPE armoured aluminuim conductor cable of size 185 Sqmm, complete, all as specified and directed.

S & F HT lightening arrrester, expulsion type complete all connecting lead and fittings, transmission class discharge capacity 30 KA suitable for maximum working pressure 11000 volts including taking down existing unserviceable lightening arrester, complete all as specified and directed.

Excavation in trenches n. exc 1.5 metre wide and not exceeding 1.5 m deep for foundations, laying under ground cables etc and getting out in hard/dence soil, complete, all as specified and directed.

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

Removal of excavated surplus spoil to a distance n.exc 50m and depositing where directed at level not exceeding 1.5 m above the starting point,complete, all as specified and directed.

Supply and Spread dry river sand for cable cushioning in trenches all as specified and directed. Note : Punned down thickness shall be considered for measurement

Supply and laying factory made ISI marked un-reinforced precast concrete cable cover class HV type I flat of size 300mm x 180mm x 40mm complete all as specified and directed.

M & L for earthing complete with galvanized steel earth plate 60 cm X 60 cm X 6.3 mm thick buried vertically in ground to depth not less than 2.25 metres deep below ground level, with top edge of earth plate not less than 1.5 m below ground level, connected to galvanized strip 25 x 4 mm earth lead by means of bolts, nuts, check nuts and washers of galvanized iron or steel besides welding at all joints as shown in drawing and including excavation and earth work, GI pipe light grade 40mm bore for protection of strip and connected to continous earth lead on pole/test point, supplying and laying charcoal dust common salt PCC 1:2:4 type B1, chamber and MS angle iron frame 40x40x3mm and RCC cover 40mm thick (1:2:4) type B1 using 20mm graded stone aggregate reinforced with 6mm dia round bars @ 75mm C/C both ways with MS handle 12mm dia, PGI funnel and wire mesh, 20mm dia GI pipe medium grade for watering all as shown in electrical plate No 3 on srl page No 497 of SSR Part I (2009) drawing and connection to earth test point including testing complete all as specified and directed Notes :- (i) Outer edge of earth pit shall be 1 metre away from the outer edge of PCC chamber. (ii) The cost of earth lead /strip and GI pipe for protection of earth lead/strip upto 7.5m is included in the quoted rate. (iii) The cost of excavation, earth work is included in the quoted rate.

K B Enterprises

Pioneer Enterprises