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| 1 | Disconnecting all the electrical connections from H.T. and L.T. side of unserviceable transformer of capacity upto and including 1000 KVA i.e. Jumpers/cable from the cable end box or bushings & earthing terminal of the transformers including taking down carefully, loading, unloading of transformer & transportation by vehicle from substation to the repairing workshop & transportation from workshop to same substation or any other substation / including reinstallation, commissioning and testing after repair /servicing complete all as specified and directed Note : Loading/unloading of transformer shall be the responsibility of the contractor at their own arrangement. |
| 2 | Opening the transformer cover of capacity upto & including 1000 KVA along with connected accessories, the conservator by removing the nuts bolts then after removing the internal H.T & L.T connections by taking them out by removing studs, bushings, taking out the core-winding assembly out of the tank, removing out burnt HV and LV windings from the core assembly, cleaning of core assembly with CTC including necessary repairs for the unserviceable transformers having ratio 11 / 0.433 KV, draining & decanting of burnt transformer oil and cleaning of sludge deposited in the tank with CTC/thinner for the transformers. Rewinding of HV and LV coils with suitable size super enamelled copper wire/ strip (As Existing) having suitable class insulation material. Reconditioning of LT coil of aluminium/copper wound transformer by turning the old paper insulations, straightening the entire LT strip providing new paper insulations of superior quality and making coil of suitable design as original . Heating of core winding assembly in hot chamber for 48 hours and removing all the moisture present in it, repair of leakage of tank if any by welding, refilling transformer oil to tank after putting the core-winding assembly into the tank, reassembling and making the internal H.T & L.T connections by fixing the studs, bushing, fitting the top cover by replacing cork sheet gasket along with conservator, testing the transformer in the workshop duly filled with oil complete all as specified and directed by Engineer-in-Charge. Note : (i) Items required for repairs including copper wire/strip required for rewinding of transformer shall be measured and paid separately under relevant item of this schedule.(ii) Repair of the transformer will be carried out at auth workshop. GE/ AGE E/M will visit to workshop before repair of transformer and certificate of auth workshop shall be submitted by the contractor.(iii) Unserviceable items required for repairs shall be measured and paid separately under relevant item of this schedule. Transformer oil with die electric strength not less than 60 KV either new or filtered and dehydrated by machine shall be filled and measured and paid separetely under respective item. |
| 3 | (iv) Faulty transformer should be checked at site in all aspects related to faults and oil shall be taken out by contractor at site and transformer shall be opened & tested for any fault at site, if rewinding is confirmed to be carried out, the core of transformer alongwith body shall be handed over to contractor without winding as the same has to be deposited to in the MES and transfomer to be send at worksop in presence of MES rep. During rewinding of core on completion the same may be notified to MES/ Engr-in-Charge to cross check the winding weight and quality of work. After completion of repair/ rewinding, necessary testing of transformer shall be carried out at workshop in presence of MES rep. Then only transformer shall be placed on site for utilization. Retrieved unserviceable winding shall be only handed over to contractor after placing of transformer at site with full load test.(v) All the transport charges including hiring of manpower/T&P for checking/testing for reparing/ rewinding of transformer shall be measured in Item No 01 here-in-above as one quantity only.(vi) In case of delay of more than a week from date of informed/site handed over to contractor of repair/ rewinding alongwith necessary checking/testing of tranformer, Rs 500/- per day shall be recovered as penalty from RAR/Final Bill(vii) During repairing period of faulty transformer, standy transformer from contractor's end of same capacity should be placed at site against faulty tranformer\\". |
| 4 | Material and labour for replacement of worn out HT copper coils made out of super enamelled insulated copper winding wire with insulation of any size for HT coils of transformers complete all as specified and directed by Engineer-in-Charge. |
| 5 | Supply and fixing in replacement of copper winding strip with insulation of any size for LT coils of transformers including providing insulation all as required. |
| 6 | Supply and fixing in replacement of LT porcelain bushings 415 V of suitable size for outdoor/ indoor type transformer of the capacity upto 200KVA with rubberised cork sheet washers complete all as specified and directed. |
| 7 | All as Per Srl item No 5.00 here in above but transformer capacity above 200 KVA upto 1000 KVA |
| 8 | Supply and fixing in replacement of worn out porcelain bushing for 11 KV HT side for outdoor type transformers upto 200KVA with rubberised cork sheet washers all as required at site complete all as specified and directed. |
| 9 | All as Per Srl item No 7.00 here in above but transformer capacity above 200 KVA upto 1000 KVA |
| 10 | Supply and fixing in replacement of worn out porcelain bushing for 11 KV HT side for indoor type transformers upto 200KVA with rubberised cork sheet washers all as required at site complete all as specified and directed. |
| 11 | All as Per Srl item No 9.00 here in above but transformer capacity above 200 KVA upto 1000 KVA |
| 12 | Supply and fixing in replacement of bush rod (for LT 415V side) made out of brass as per existing size and type complete with one check nut, two nuts, washers and rubber seal, all as per sample for outdoor/indoor type transformer of the capacity upto 200KVA complete all as specified and directed. |
| 13 | All as Per Srl item No 11.00 here in above but transformer capacity above 200 KVA upto 1000 KVA |
| 14 | Supply and fixing in replacement of bush rod (for HT 11KV side) made out of brass as per existing size and type complete with one check nut, two nuts, washers and rubber seal, all as per sample for outdoor/indoor type transformer of the capacity upto 200KVA complete all as specified and directed. |
| 15 | All as Per Srl item No 13.00 here in above but transformer capacity above 200 KVA upto 1000 KVA |
| 16 | Supply and fixing in replacement of unserviceable breather assembly for transformer of capacity upto 500 KVA all as per existing complete all as specified & directed |
| 17 | Supply and fixing Arcing Horns of suitable size complete all as per sample for transformer of capacity upto 200 KVA complete all as specified & directed |
| 18 | All as per Srl item No 16.00 here in above but transformer capacity above 200 KVA upto 500 KVA |
| 19 | Supply and fixing for UNSV oil temperature/ thermometer with new oil temperature/thermometer for transformer capacity upto 500KVA with all connected accessories complete all specified and directed. |
| 20 | Supply and fixing in replacement of Diapharm of breather assy for transformer of capacity upto 1000 KVA complete all as per existing specification and size required at site complete all as specified & directed. |
| 21 | Material and Labour for dehydration including filteration of transformer oil using dehydration filteration plant including testing of sample before and after dehydration and filteration complete all as specified and directed. (The dielectric strength to be achieved 60 KV at 2.5 mm gap after completion of dehydration and filteration). Note:- (i) Dehydration of transformer oil in the Transformer carried out on the site by dehydration machine.(ii) All the Labour work like disconnection of cable and reassemble & drum etc. has to be carried out by contractor under their own arrangement.(iii) Shut down of HT/LT line shall be taken by contractor from MES rep.(iv) Both test sheets of transformer oil before dehydration and after dehydration shall submitted to Engr-in-Charge. |
| 22 | Supply and filling/toping up of transformer oil in different transformer with high viscosity, high resistance to oxidation & thermal stability, as per IS 355, dielectric strength (BDV) 60 KV at 2.5 mm gap complete all as specified and as directed. |
| 23 | Material and Labour for Preparation of old painted surfaces and cooling coils/ fins of transformers of upto 200 KVA ( incl. 200 KVA) capacities by removing oil marks using chemical or hot blow lamp. Spray painting to prepared surfaces using synthetic enamel paint of superior quality of colour as approved by GE / AGE E/M as per standard engineering practice with two coats, writing SM No, MES No, Make and capacity with white paint having height of each letter not less than 2.5cm and width not less than 1cm complete all as specified & directed. Note: Shutdown of HT/LT line shall be taken by contractor in writing from MES rep. |
| 24 | All as Per Srl item No 22.00 above but of capacity above 200 KVA to 500 KVA complete all as specified & directed. |
| 25 | Supply and filling up in replacement silica gel superior quality to transformer breather assy all as required and directed. |
| 26 | Earth work in excavation in all kind of soil by mechanical means (Hydraulic excavator)/ in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. complete all as specified and directed. |
| 27 | Returning 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. |
| 28 | Supply and laying unreinforced precast cement concrete cable cover, class HV, type 1 with peak, size 300 mm x 180mmx 40mm for protection of cable abutting each laid dary flat width equal to the length of cable cover complete all as specified and directed. |
| 29 | 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. |
| 30 | Material and Labour for detection of any type of fault in HT underground Line (laid in soil at plane area or forest area) with the help of Cable fault locator machine. Cable fault locator with carring vehicle will be brought by the cable fault detection agencies. Span of faulty cable will be trace out by the agencies by meggering HT cable.Note : 1. Detection of fault in one span of length will be measured as Each Job.2. Technicians will be employed by the contractor.3. Earth work and taking out will be measured and paid seperately.4. Material for repair and replacement will be measured and paid saperately.5. One job shall be measured if the fault has successfully rectified by the fault locator machine and Technician. 6. HT fault should be trace and done within 48 hours if not done recovery of Rs. 2000/per day shall be made from Contractors RAR/ Final bill. |
| 31 | Supply, laying of HT XLPE cable in trenches or fixed to wall/pole or passing through pipe or road crossing, testing and commissioning of HT XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty ) with aluminium conductor, 11KV (Earthed) grade, suitable for earthed system, with aluminium conductor of size 95 Sqmm 3 Core including taking down unserviceable HT cable of any type/size/description, etc complete all specified and directed (Note : Excavation & Earth work shall be measured and paid seprately). |
| 32 | Supply, laying of HT XLPE cable in trenches or fixed to wall/pole or passing through pipe or road crossing, testing and commissioning of HT XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty ) with aluminium conductor, 11KV (Earthed) grade, suitable for earthed system, with aluminium conductor of size 120 Sqmm 3 Core including taking down unserviceable HT cable of any type/size/description, etc complete all specified and directed (Note : Excavation & Earth work shall be measured and paid seprately). |
| 33 | Supply, laying of HT XLPE cable in trenches or fixed to wall/pole or passing through pipe or road crossing, testing and commissioning of HT XLPE insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cable (heavy duty ) with aluminium conductor, 11KV (Earthed) grade, suitable for earthed system, with aluminium conductor of size 185 Sqmm 3 Core including taking down unserviceable HT cable of any type/size/description, etc complete all specified and directed (Note : Excavation & Earth work shall be measured and paid seprately). |
| 34 | Dismantling cross-arms of M.S. channel or angle sections etc. complete all as specified and as directed. |
| 35 | Material and labour for Cross arms, bracings, 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 prime coat, one under coat and one finishing coat of aluminium paint complete all as specified and directed. |
| 36 | Material and labour in replacement of cable termination outdoor, heat shrinkable type suitable for XLPE cable of size 50 Sqmm to 95 sqmm 3 core with working voltage 11000 volts (Earthed) with jointing material and accessories including testing complete all as specified and directed. |
| 37 | Material and labour in replacement of cable termination outdoor, heat shrinkable type suitable for XLPE cable of size 120 Sqmm to 185 sqmm 3 core with working voltage 11000 volts (Earthed) with jointing material and accessories including testing complete all as specified and directed. |
| 38 | Material and labour in replacement of cable termination outdoor, heat shrinkable type suitable for XLPE cable of size 240 Sqmm to 400 sqmm 3 core with working voltage 11000 volts (Earthed) with jointing material and accessories including testing complete all as specified and directed. |
| 39 | Material and labour in replacement of Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink outdoor type joint complete with joining material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 Sqmm to 95 sqmm 3 core with working voltage 11000 volts complete all as specified and directed. |
| 40 | Material and labour in replacement of Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink out door type joint complete with joining material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 Sqmm to 185 sqmm 3 core with working voltage 11000 volts complete all as specified and directed. |
| 41 | Material and labour in replacement of Cable jointing kit for 11 KV (Earthed) grade cable for straight through heat shrink outdoor type joint complete with joining material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 240 sqmm to 400 Sqmm 3 core with working voltage 11000 volts complete all as specified and directed. |
| 42 | Dismantling and taking down carefully old ACSR conductor/GI wire of any size from HT overhead line after unbinding from insulator complete all as specified and directed Please Enable Macros to View BoQ information |
| 43 | Dismantling and taking down carefully old ACSR conductor/GI wire of any size from HT overhead line after unbinding from insulator complete all as specified and directed Please Enable Macros to View BoQ information |
