Repair and maint of transformers including dehydration of transformer oil under GE East Jalandhar Cantt

Amount

M & L for removing, scraping of old worn out gasket of oil tank and fixing of new rubberished gasket sheet on the tank top cover, 6.0 mm thick and pasted by using gasket cement for the transformer of any type and make of capacity 50 to 160 KVA including fixing the top cover with conservator tank the transformer complete all as specified and directed.

All as per item No. 1 here-in-before but in transformer 200 to 350 KVA complete all as specified and directed.

All as per item No. 1 here-in-before but in transformer 400 to 500 KVA complete all as specified and directed.

Taking down carefully transformer of capacity 50 KVA to 160 KVA from platform after disconnecting HT/ LT connections, transporting the same from site including loading/ unloading to workshop, decanning of transformer oil and keeping in safe custody for reuse after carrying out repair, opening the top cover, taking out burnt HT & LT coils in the presence of Engineer-in-charge, taking out complete core assembly and inserting same in transformer body, pasting the rubberised cork sheet with quick fix adhesive and setting the HT/ LT coils after rewinding of burnt HT / LT coils using existing size of conductor, varnishing including replacement of insulating material, reassembling filling of dehydrated/ new transformer oil of approved quality for topping up, transporting back the transformer in position and making all connection of HT and LT sides and tap changer complete including testing and commissioning of transformer on load complete all as specified. Note: (i) Re-winding of HT/LT coils, replacement of defective/ unserviceable parts to be replaced shall be measured and paid for seperately. (ii) Dehydration of existing oil shall be measured and paid for seperately. (iii) The new transformer oil if required shall be measured and paid seperarately under respective items.

All as per item No. 4 here-in-before but transformer of capacity 200 KVA to 350 KVA complete all as specified and directed.

All as per item No. 4 here-in-before but transformer of capacity 400 KVA to 500 KVA complete all as specified and directed.

Taking out the transformer of capacity 400 KVA with disconnection of HT and LT cable by using crane and manpower by opening upper and side cover carefully from compact substation and refixing the its original position after repair all as specified and directed Note: (i) Re-winding of HT/LT coils, replacement of defective/ unserviceable parts to be replaced shall be measured and paid for seperately. (ii) Dehydration of existing oil shall be measured and paid for seperately. (iii) The new transformer oil if required shall be measured and paid seperarately under respective items.

Material and labour for rewinding of burnt/ over heated HT/ LT limbs of transformers 11 KV/ 433 votls, 3 phase of capacity 50 to 500 KVA by using double paper covered (DPC) proper insulated superior quality copper conductor wire of suitable gauge, size and specification complete all as specified and directed.

Material and labour for rewinding of burnt/ over heated HT/ LT limbs of transformers 11 KV/ 433 votls, 3 phase of capacity 50 to 500 KVA by using double paper covered (DPC) proper insulated superior quality aluminium conductor wire of suitable gauge, size and specification complete all as specified and directed.

M & L for replacement of HT copper/brass stud with nuts and washers including oil seal gasket suitable for transformers 11 KV/ 433 volts 3 phase of capacity 50 KVA to 500 KVA indoor/outdoor type complete all as specified and directed.

M & L for replacement of LT copper/brass stud with nuts and washers including oil seal gasket suitable for transformers 11 KV/ 433 volts 3 phase of capacity 50 KVA to 500 KVA indoor/outdoor type complete all as specified and directed.

M & L for replacement of LT bushing porcelain with brass stud, nut and washer, gaskets, oil seal indoor/ outdoor type suitable for capacity of transformer 50 KVA to 500 KVA complete all as specified and directed.

Supply & fixing in repair in position HT insulated bushing suitable for transformer 11 KV/ 433 volts, 3 phase of capacity 50 KVA to 500 KVA complete all as specified & directed by Engineer-in-Charge.

Dehydration and filteration of existing transformer oil using transformer oil filteration plant to eliminate moisture and foreign particles till upto achieve improved di-electric strength of oil upto 45 KV (minimum) at a 2.5mm electrode gap and to bring the acidity within the permissible limit below 0.5 mg KOH/Cm all as specified and directed.

Supply and filling of transformer insulated oil having di-electric strength 65 (minimum) at a electrode gap of 2.5mm upto the required level of transformer and testing of di-electric strength of oil in transformer before and after filling. (Transformer oil to be supplied in sealed container). complete all as specified and directed.

Material & labour for painting of transformers of capacity 50 KVA to 500 KVA of any type & make with two coats of synthetic enamel paint (smoke grey) after thoroughly cleaning of dust, scale, grease, dirt and other foreign material and removing of existing paint and preparation of surfaces including writing of capacity and SM No./ MES No. on transformers complete all as specified and directed

Supply and fixing transformer oil temperature gauge 0 - 100 graduated. Analogue dial type, suitable for transformer of capacity 50 KVA to 500 KVA suitable as per existing make and type complete all as specified & directed by Engineer-in-Charge.

Supply & fixing silica gel breather assembly for transformer of capacity 50 KVA to 500 KVA complete all as specified & directed by Engineer-in-Charge.

Supply & fixing silica gel breather assembly suitable for transformer 66 KV/ 11 KV of capacity 8000 KVA as per existing make and type complete all as specified & directed by Engineer-in-Charge.

Supply and filling of fresh and dry silica jel inside the breather pocket and fixing properly with transformer including painting the outer surface of the breather assembly

Supply & replacement of defective tap changer switch assembly complete with tapping arrangement suitable to steping up/ down of 2.5% voltage normal tapping suitable for transformer 11 KV/ 433 volts, 3 phase of capacity including making connections and testing commissioning 50-100 KVA complete all as specified & directed by Engineer-in-charge.

Supply & replacement of defective tap changer switch assembly complete with tapping arrangement suitable to steping up/ down of 2.5% voltage normal tapping suitable for transformer 11 KV/ 433 volts, 3 phase of capacity including making connections and testing commissioning 150-350 KVA complete all as specified & directed by Engineer-in-charge.

Supply & replacement of defective tap changer switch assembly complete with tapping arrangement suitable to steping up/ down of 2.5% voltage normal tapping suitable for transformer 11 KV/ 433 volts, 3 phase of capacity including making connections and testing commissioning 400-500 KVA complete all as specified & directed by Engineer-in-charge.

Supply, fixing and testing after jointing cable Jointing Kit for 11 KV grade cable for outdoor type termination cold shrinkable joint complete with jointing material and accessories suitable for XLPE armoured aluminum cable of size 240-300 sqmm 3 core. complete all as specified & directed by Engineer-in-charge.

Supply, fixing and testing after jointing cable Jointing Kit for 11 KV grade cable for indoor type termination cold shrinkable joint complete with jointing material and accessories suitable for XLPE armoured aluminum cable of size 240-300 sqmm 3 core. complete all as specified & directed by Engineer-in-charge.

Supply & fix in replacement and testing after jointing Cable Jointing Kit for 11 KV grade cable for straight through Cold shrinkable joint complete with jointing material and accessories suitable for XLPE armoured aluminum cable of size 95 sqm 3 core complete all as specified and directed.

Supply & fix in replacement and testing after jointing cable Jointing Kit for 11 KV grade cable for straight through Cold shrinkable joint complete with jointing material and accessories suitable for XLPE armoured aluminum cable of size 240- 300 sqm 3 core complete all as specified and directed.

Supply, fixing and testing after jointing cable Jointing Kit for 11 KV grade cable for outdoor type termination cold shrinkable joint complete with jointing material and accessories suitable for XLPE armoured aluminum cable of size 95 sqmm 3 core complete all as specified and directed.

Supply, fixing and testing after jointing Cable Jointing Kit for 11 KV grade cable for indoor type termination cold shrinkable joint complete with jointing material and accessories suitable for XLPE armoured aluminum cable of size 95 sqmm 3 core. complete all as specified & directed by Engineer-in-charge.

M & L in replacement earthing complete with GI or steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground vertically in a pit not less than 2.25 meter below ground level with top edge of earth plate at a depth not less than 1.5 meter below level covered on all sides with alternative layers of charcol dust and common salt 15 cm thick connected to galvanised earth lead Galvanised Iron strip 32 x 6 cm by means of bolts, nuts, check nuts and washers of Galvanised Iron or steel with protection pipe earth wire protected by galvanized steel pipe medium grade 40 mm bore from top of the earth plate electrode upto test point and watering pipe 20mm bore, GI light grade with funnel and wire mesh all as shawn in electrical plate No 3 of SSR Part-1 and connected to earthing test point all as specified or indiated and testing on completion, including PCC earth pit (1:3:6) type C-2 RCC covered with CI cover hinged with frame including excavation and earth work complete all as specified. Note : If result is not satisfactory then contractor will do 2nd earthing on his own cost.

M & L for cleaning and preparation of old painted surface of 4 pole structure and painting with one coat of aluminium paint to all steel structure such as channel/brackets, bracing, clamps, anti climbing device, cross arms and marking 30 cm high alternate black & white strips with synthetic enamelled paint upto 1.5 mtr height and writing pole Nos and applying one coat of cement base paint on PCC coping complete all as specified and directed.

Supply and fixing galvanised pipe light grade of ISI marked 100 mm bore for passing of cable fixed to poles/walls/lay under floor complete with and including fittings as required compete all as specified and directed by Engr-in-charge.

Supply and fixing galvanised pipe light grade of ISI marked 80 mm bore for passing of cable fixed to poles/walls/lay under floor complete with and including fittings as required compete all as specified and directed by Engr-in-charge.

Supply and fixing Danger notice plate for HT of 25 cm x 20 cm x 1.6 mm thick mild steel sheet vitreous enameled white, with letters figures and conventional skull and bones and written as "DANGER" in signal red colour and fixed with MS clamps made out of MS flat 25 mm x 3mm , including nuts & bolts, including 2 coats of aluminium paint over a coat of red oxide primer all as specified. (Letters shall be written in English, Hindi and Punjabi)

Supply and fixing pin type insulator porcelain viterous white brown or green incl one galvanised mild steel spindle two galvanised iron washer and one galvanised iron nuts 150 mm height, 150 mm dia for 11000 volts grade. Make Jaipuria/ Rashtriya

Supply and fixing HT Lightning Arrestor Metal Oxide Type (Gap less) heavy duty single pole suitable for system voltage of 12 KV and working rated arrestor voltage 9 KV with normal discharge current of 10 KA all as per IEC 99.4 effectively earthed complete all as specified and directed. Make Jaipuria/ Rashtriya/ Oblum

Laying, jointing and testing only under ground PVC armoured cable insulated and PVC sheathed LT 1100 volt grade (heavy duty) with strandard aluminum conductor of size 400 Sqmm 3.5 core laid in trenches, in floor, in duct, through pipes or along the pole including taking out unserviceable cable complete all as specified and directed by Engineer-in-charge Notes : (a) Excavation, earthwork, sandcushioning, brick protection cover, GI protection pipe and clamps shall be measured and paid for separately. (b) LT Cable shall be issued under Sch 'B'.

Supply, laying, jointing and testing under ground XLPE insulated, screwed, PVC bedded, galvanized steel strip or wire armoured electric power cable (heavy duty) with stranded aluminium conductor, 11000 volts grade earthed system of size 400 sqmm 3 core conforming to IS-7098 (Part-II) 1985 laid in trenches, in floor, in duct, through pipes or along the pole including taking out unserviceable HT cable complete all as specified and directed.

All as per item No 39 but size 300 Sqmm all as specified and directed

Excavation in trenches in soft/loose soil not exceeding 1.50 mtr wide and not exceeding 1.50 mtr in depth for laying of cables and getting out complete all as specified and directed by Engineer-in-Charge.

Returing, filling in, including spreading, leveling watering and well ramming inlayers not exceeding 25 cms thick each layer compete all as specified and directed by Engineer-in-Charge.

Removal of surplus soil to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 mtr above the starting point complete all as specified and directed by Engr-in-charge.

Material and labour for sand cushioning with a layer of sand 8cm thick before laying of cable and 15 cm thick after laying of cable in trenches or sand filling in a layer of 25 mm thick, over cable in open trench at indoor sub stations complete all as specified.

Supply & laying old size sub class 'B' bricks laid flat in trenches over the cable with the length of brick perpendicular to the direction of cable length, adjacent/abutting each other complete all as specified and directed by Engineer-in-charge.

Material and labour repair to PCC earth pit by taking out existing cover with frame, providing PCC (1:3:6) type C-2 using 40mm graded stone aggregate and re-fixing RCC cover with frame including necessary excavation & earthwork and brick work complete all as specified and directed.

M&L MS frame along the edges of cable ducts inside of sub stations grouted in PCC (1:3:6) duly painted with two coats of synthetic enamel paint over a coat of red oxide primer fixed in replacement complete all as specified and directed.

M & L for mild steel chequered plate 8 mm thick or over in thickness in available sizes of grade Fe-290 (Gde-E-165) cutting, finishing of edges and put up the same on cable ducts complete as per width of duct and painting with enamelled paint including taking out to all existing broken RCC duct cover all as specified and directed.

S & F aluminium P G Clamp of transformer of 11/0.433 KV of size 4 to 6 inch complete all as specified and directed.

Supply and laying 40 to 63mm graded stone aggregate spread around the plinth mounted transformer/ four pole structure of transformer complete all as specified and directed.

M&L for shifting of transformer of any capacity from MES Yard to any 4 pole/Plinth including disconnetcing / connecting existing HT/LT connection and depositing the removed transformer to MES Yard complete all as specified and directed.

Bains Enterprises

Kaul Enterprises

Northern cable fault locatoers