REPAIR REWINDING MAINTENANCE OF DIFFERENT CAPACITIES OF TRANSFORMER AND CONNECTED HT ALLIED WORK UNDER GE SAMBA

Amount

Inspection of defective step down 11 KV / 0.433 upto 400 KVA transformer any make and mounted on plinth/floor/ pole mounted, indoor/outdoor type, step opening, removing the top cover of transformer, detecting the fault, rectfying the defect at site (Samba, Dayalachak & Galak) except major fault of burnt winding or other. The following tasks if required will be performed :- (a) Step opening of the transformer and removing the transformer top cover for checking/rectified the faults of the transformer. (b) Replacement of defective HT/LT bushes, brass spindles etc. (c) Refixing the transformer top cover with OEM recommended size gasket of minimum thickness 5mm, nuts, bolts and washers if oil filing pipe cover damages replaced with suitable size of steel cover as per existing model and size the payment for gasket paid separately under relevant items of CA schedule. (d) Testing of transformer magnetic balance test, HT/LT winding test complete and produce testing certificate with the sign of contractor, Engineer-in-Charge, technician deputed by contractor, the payment of any RAR/Bill shall not be released to the contractor without test certificate. Note : (i) In case of replacement of LV / HV bushing / spindles / tap changer etc, will be measured and paid for separately under relevant items. (ii) Transformer oil (if required) for topping will be measured and paid for separately under relevant item (iii) SM Nos of the transformers likely to be repaired shall be written on equipment all as directed by Engr-in-Charge/GE.

M&L for disconnecting, lifting, loading and transportation of unserviceable transformer indoor/outdoor type 11000/433 volts of capacity 50 KVA to 400 KVA from site to workshop for repair/rewinding and repair to the transformer by dismantling the top cover and removing unserviceable burnt LT/HT side coil from the core, rewinding the LT and HT side core complete with same size of copper wire in HT side and copper strip from LT side with suitable insulating materials, nuts, bolts, washers, gasket set etc, heating the new transformer winding in special heat chamber for demoisturising of LT/HT coil, connecting the LT/HT coils, filling the fresh transformer oil, reassembling the transformer, transporting/shifting back the transformer at site after repairs, recommissioning & testing, including applying two coats of synthetic enamel paint of approved paint after preparation of all external surfaces of transformer, complete, all as specified and directed by Engineer-in-Charge. Note:- (i) The quoted rates shall deemed to include for the transportation, T&P, Labours from site i.e Samba inside Military Area, Dayalachak & Galak to workshop and workshop to back at site after repairs, cost of gasket set, nuts, bolts, washers, etc. (ii) All other spares such as tap changer, copper wire & copper strip for rewinding, HT/LT side bushing, transformer oil & air breather assembly with silica gel shall be measured and paid for separately under respective items of this Schedule.

Supply and fixing in replacement of HT bushing, 12000 volts, 50 Hz porcelain with copper stud, nuts, bolts, washers, gasket, oil seal suitable for transformer 11/0.433 KV, 250 to 400 KVA capacity complete all as specified and directed.

Supply and fixing in replacement of HT bushing, 12000 volts, 50 Hz porcelain with copper stud, nuts, bolts, washers, gasket, oil seal suitable for transformer 11/0.433 KV, 50 to 200 KVA capacity complete all as specified and directed.

Supply and fixing in replacement of LT bushing, 1100 volts, 50 Hz porcelain with copper stud, nuts, bolts, washers, gasket, oil seal suitable for transformer 11/0.433 KV, 250 to 400 KVA capacity complete all as specified and directed.

Supply and fixing in replacement of LT bushing, 1100 volts, 50 Hz porcelain with copper stud, nuts, bolts, washers, gasket, oil seal suitable for transformer 11/0.433 KV, 50 to 200 KVA capacity complete all as specified and directed.

Supply and fixing in replacement of breather assembly of transformer 50 KVA to 400 KVA complete all as specified and as directed.

Supply and filling in replacement of silica gel (Deep sky blue) in to existing breather assembly of transformer complete all as specified and as directed.

Supply and fixing in replacement of gasket sets of minimum thickness as per OEM recommended or existing thickness for transformer tank 50 KVA to 400 KVA capacity with nuts, bolts etc complete all as directed. Note: While dehydration of transformer existing transormer oil should be collect in clean drum after that replace the defective gaskets after placing gaskets re-fill the oil through de-hydration machine including topping up oil if required. The dehydration and topping up of oil measured as relevent item of schedule.

Material and labour for rewinding of Transformer of capacity 50 KVA to 400 KVA for HT winding the defective coils with approved quality of copper wire as per IS specification of existing guage and with new insulation materials, varnishing by vaccum impregnation and baking of coil assembly to match with the existing original winding coils bracings the terminals before placing into the transformer and assembling the HT coil with new insulation between core all as required and fitting the coils in the chamber, testing and commissioning the transformer after providing necessary connections complete including transportation to workshop and back to site, lowering the transformer from two pole structure and after repair locate the transformer in two pole structure included in the quoted rate.

Material and labour for rewinding of Transformer of capacity 50 KVA to 400 KVA for LT winding the defective coils with approved quality of copper wire as per IS specification of existing guage and with new insulation materials, varnishing by vaccum impregnation and baking of coil assembly to match with the existing original winding coils bracings the terminals before placing into the transformer and assembling the HT coil with new insulation between core all as required and fitting the coils in the chamber, testing and commissioning the transformer after providing necessary connections complete including transportation to workshop and back to site, lowering the transformer from two pole structure and after repair locate the transformer in two pole structure included in the quoted rate.

M&L for Filtration/ dehydration and cleaning of transformer oil off line by dehydration plant, including testing of samples before and after dehydration and filtration, dielectric strength should not less than 60 KV at 2.5 mm gap after dehydration/filtration all as specified and directed Note: (i) For running of filtration plant the arrangement of electric supply / DG set should be made by contractor and the cost of same deemed to be included in quoted rate. (ii) Transformer are installed at various locations of Samba Military station area, Dayalachak & Galak i.e pole mounted, plinth based, indoor type. (iii) No online dehydration allowed. (iv) Before dehydration the contractor should open the transformer and replace the Gaskets, Low Tension bushings High tension bushings, silica gel breather, thermometer, drain valve, rubber gasket etc if found defective as per direction of Engr-in-Charge and the materials replaced by the contractor are paid under relevant items (v) In case of replacement of LV / HV bushing / spindles / tap changer etc, will be measured and paid for separately under relevant items. (vi) Transformer oil (if required) for topping will measured and paid for separately under relevant item.

Supply and topping up of insulating transformer oil confirming to IS 335 1993 for distribution transformer with dielctric strength not less than 60 KV complete all as specified and directed. Note:-(i) For running of filtration plant the arrangement of electric supply / DG set should be made by contractor and the cost of same deemed to be include in quoted rate. (ii) Transformer are installed at various locations of Samba Military area, Dayalachak & Galak i.e pole mounted, plinth based, indoor type.

M & L Painting to the transformer of any capacity 50 KVA to 160 KVA complete with synthetic enamel paint as existing earlier by spray painting including filling cavities with filler one coat after cleaning all dust etc and marking SM/MES No on the transformer at both side complete all as specified and directed.

M & L Painting to the transformer of any capacity 200 KVA to 400 KVA complete with synthetic enamel paint as existing earlier by spray painting including filling cavities with filler one coat after cleaning all dust etc and marking SM/MES No on the transformer at both side complete all as specified and directed.

Material and labour for Painting of 4 pole structures comprising of cross arms, supporting angle iron, clamps, nuts & bolts complete with aluminium paint of 1st quality on scraping old painted surface and Painting with one coat of synthetic enamal paint upto 1.5 metre above the ground level with black and yellow colour alternatively 30 cm interval from coping of the pole and white washing the coping and cleaning the surrounded vegetation in root level complete all as directed by Engr-in-Charge.

Material and labour for Painting of 2 pole structures comprising of cross arms, supporting angle iron, clamps, nuts & bolts complete with aluminium paint of 1st quality on scraping old painted surface Painting with one coat of synthetic enamal paint upto 1.5 metre above the ground level with black and yellow colour alternatively 30 cm interval from coping of the pole and white washing the coping and cleaning the surrounded vegetation in root level complete all as directed by Engr-in-Charge.

Excavation in trenches in any type soil n.exc. 1.5 Mtr in width and not exceeding 1.5 Mtr in depth and getting out all as required for laying of cable/ poles complete all as specified and directed.

Removing excavated material to a distance not exceeding 50 Mtr and deposting where directed at a level not exc. 1.5 mtr above the starting point complete all as specified and directed.

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

Material and Labour for dry fine sand cushioning to under ground cables 8 cm thick before laying the cable and 15 cm thick after laying, stretching and testing the cable all as directed. Note: Punned thickness shall be measured and paid.

Supplying and laying un-reinforced precast concrete cable cover, class HVP, type 1 with flat, size 300mmx 180mm x 40mm laying perpendicular to HT cable complete all as specified and directed

Supply, laying & testing cable XLPE insulated, screened PVC bedded galvanised steel strip armoured HT electric power cable (heavy duty) 11000 volts grade with aluminum conductor 6.35 KV (UE)/11 KV (E) grade, cross sectional area 95 Sqmm 3 core as per IS-7098 suitable for earth system laid in trenches including taking out unserviceable /brunt HT cable of any type /rating, complete all as specified and as direcetd.

Supply, laying & testing cable XLPE insulated, screened PVC bedded galvanised steel strip armoured HT electric power cable (heavy duty) 11000 volts grade with aluminum conductor 6.35 KV (UE)/11 KV (E) grade, cross sectional area 120 Sqmm 3 core as per IS-7098 suitable for earth system laid in trenches including taking out unserviceable /brunt HT cable of any type /rating, complete all as specified and as direcetd.

Material and labour in repairs Cable end jointing kit for 11 KV (earthed) grade cable for out door type termination heat shrinkable type joint complete with all jointing material and accessories suitable for 3 core XLPE HT armoured aluminium conductor cable of size 95 sq mm complete , all as specified and directed

Material and labour in repairs Cable end jointing kit for 11 KV (earthed) grade cable for indoor type termination heat shrinkable type joint complete with all jointing material and accessories suitable for 3 core XLPE HT armoured aluminium conductor cable of size 95 sq mm complete , all as specified and directed

Material and labour in repairs Cable end jointing kit for 11 KV (earthed) grade cable for out door type termination heat shrinkable type joint complete with all jointing material and accessories suitable for 3 core XLPE HT armoured aluminium conductor cable of size 120 to 185 sqmm complete , all as specified and directed

Material and labour in repairs Cable end jointing kit for 11 KV (earthed) grade cable for indoor type termination heat shrinkable type joint complete with all jointing material and accessories suitable for 3 core XLPE HT armoured aluminium conductor cable of size 120 to 185 sqmm complete, all as specified and directed

Material and labour for detecing HT KV cable fault of 24hrsx7 days i.e. entire contract period with technician round the clock on Samba Military Station area, Dayalachak & Galak location and AOR of GE samba, detect the cable fault and necessary excavation of soil, hard soil and refilling the soil , joining the faulty cable with new straight through joint kit after jointing testing and charging of HT cable all as specified and directed by Engineer-in-Charge. Note: (i) Cable joint of required size measured and paid separately. (ii) Each job considered cable fault locator use in one day in any length of cable. (iii) After finding fault of cable necessary excavation of soil to taking out burnt / faulty cable inside soil and refilling the soil, the rate shall be deemed to be included in the quoted rate.

Material and labour in repairs Cable end jointing kit for 11 KV (earthed) grade cable for outdoor type termination heat shrinkable type joint complete with all jointing material and accessories suitable for 3 core XLPE HT armoured aluminium conductor cable of size 95 sqmm complete , all as specified and directed

Material and labour in repairs Cable end jointing kit for 11 KV (earthed) grade cable for outdoor type termination heat shrinkable type joint complete with all jointing material and accessories suitable for 3 core XLPE HT armoured aluminium conductor cable of size 120 sqmm complete , all as specified and directed

Supply and fixing for lightning arresters expulsion type complete with all fittings transmisson class,discharge capacity 65 kilo amps suitable for 11000 volts conforming to IS including taking down old unservicable lightning arresters, complete all as specified and directed.

Supply and fixing air break switch gang operated (GOD) triple pole with drop out fuses mechanically operated, mounted on insulators (15 insulators) polymer type & steel frame with operating mechanism & operating rod of GI pipe 25mm medium grade with necessary clamps to be operated from ground level 11 KV grade working pressures and current upto 400 amps etc including taking out the unserviceable gand operated device after disconnecting the electric HT supply, complete all as specified and directed.

Supply and fixing in replacement of aluminium conductor steel reinforced (ACSR) for HT lines on PCC/Steel tubular poles, stretching without kinks and bends including aluminium binding wire of size ferret to Dog as per load complete all as specified and directed.

Supply and fixing in replacement Pin type, porcelain, vitreous, white, brown or green insulator including one galvanised mild steel spindle, two galvanised iron washers and one galvanised iron nut, 150mm height, 150mm dia for 11000 volts grade complete all as specified and directed

Supply and fixing in replacement Disc type insulator, 150mm high, 150mm dia, 38x5mm section of strap, 20mm dia of bolts white or brown or green, single disc type assembly for tension with tension clamps for conductors, working pressure 11000 volts, complete all as specified and directed

Cutting, trimming of hanging/ extended branches of trees upto a distance 3 metre from the overhead HT/LT line and making the line clear upto the entire length of the feeder including removal and disposal of the tree branches outside the Military camp at district garbage dump area to carry out the removed branches and debris, the vehicle shall be arranged by contractor only complete all as specified and directed. Note (i) The Rates shall inclusive of T&P, hydraulic ladder, equipment such as motorised diesel operated hacksaw etc complete all as specified and as directed. (ii) One span comprises of 3 to 5 conductors of any distance between one pole to adjacent pole including trimming of all tree branches in vicinity & around poles /conductor & will be measured as one span. (iii) Necessary prior permission shall be obtained from concerned Engineer-in-charge before carrying out the work. (iv) All safety measures & insurance to the staff undertaking the Job shall be the Contractor's responsibility.

Material and labour for earthing complete with galvanized steel earth plate electrode 600x600x6mm thickness not less than 6mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below the normal ground level ) with top edge of plate not less than 1.5 mtr below the normal ground level connected to galvanized iron strip 32x6mm by means of nuts bolts,washers,check nuts of GI steel all as shown in electric plate no 3 of SSR -2009 Part-I, all as specified and indicated complete and including charcoal dust,salt etc and GI protection pipe medium grade 40mm and GI watering pipe 20mm light grade with funnel and wire mesh ,40mm thick pre-cast RCC N-15 (nominal mix) cover reinforced with XPM weight not less than 4 kg /sqm with suitable handle of 6mm dia MS bar and angle iron 40x40x3mm frame for cover ,PCC M-15 (nominal Mix) pit,excavation and earth work in any type of soil and connected all as specified and as directed.

Material and labour for earthing complete with galvanised steel earth plate electrode , 600x600x6mm thick burried directly in the ground (earth pit not less than 2.25 mtr deep below ground level)with top edge of the plate not less than 1.5mtr below ground level connected to galvanised iron wire 4mm dia as earth lead by means of bolts, nuts and washers of GI up to test point , GI tubing 15mm bore medium grade protection pipe , GI watering pipe 20mm bore light grade with funnel and wire mesh , charcoal , and salt precast PCC 1:2:4 (Nominal mix) cover with suitable steel handle , and angle iron 40x40x3mm frame for pit cover , PCC 1:2:4 pit including earth work in any type of soil , removal of surplus soil to a distance n.exc 50mtr and connecting , testing on completion all as shown on electric plate No 03 of SSR -2009 Part-I complete all as directed.

Supply and fixing in replacement of GI strip of size 25x4mm from test point to transformer or other places complete all as specified and directed.

Material and labour for 80mm bore GI pipe Light grade in replacement for protection of HT cable fixed to walls/ poles/road crossing including suitable size clamps etc, complete all as specified and directed.

Dismantling and taking down transformer of any capacity from two pole/four pole structure after taking proper shut down from main power house and refixing the same and other platfrom/location including electric connection and testing on load complete all as specified and directed by Engineer-in-Charge. Note: The rate for hydraulic mobile crane and vehicle with manpower using contractor to lift and transport to install one place to other place entire Samba Garrison deemed to be included in the quoted rate of the item.

Material and labour for preparation of old steel surface of XPM jali and angle iron fixed on transformer plinth for painting of two coats of synthetic enamel paint over a coat of primer and two coats of colour washing over a coat of white wash on plastered surface complete all as specified and directed.

Material and labour for spreading graded course aggregate 40mm nominal size (thickness minimum 150mm) to be spread over sand 100mm thick including surface excavation and removal of complete vegetation and levelling and brick work using old size class 'B' complete all as specified and directed.

Material and labour for plain cement concrete 1:3:6 type C-1 (using 20mm graded crushed stone aggregate) as in coping of poles and foundation of stay etc including necessary form work, complete all as specified and directed.

Material and labour in replacement of structural steel work conforming to grade Fe-410S as in cross arms, bracing, 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 coat of zink chrome primer and two coats of aluminium paint for 11KV insulation complete all as specified and directed.

M/S GUPTA TRADING CO (BID ID -3264580)

satpal and brothers (BID ID -3259090)

M/S HIMANSHU BUILDERS (BID ID -3265009)

M/S JIWAN SINGH (BID ID -3258670)