Repair comprehensive maintenance of transformer RMU Battery charger OCB and connected items at Shekhawati Line Hazipeer Line Sanyat Line NPG Line Karam Vihar MAP Sumran Line Maude Line Tigris Road MAP 218 Med Regt 512 Lt AD 406 Lt AD 255 TC 262

Amount

Disconnecting electrically and mechanically indoor/outdoor transformer capacity upto 630 KVA from HT/LT terminals and lowering down/getting out from 2/4/6 pole structure/plinth or inside sub station for major repairing/minor repair complete all as specified and directed .

M&l for draining out complete transformer oil from transformer of upto 630 KVA capacity at site which found major repair and storing the oil in suitable container (container to be provided by the contractor to keep aside for re-use (after repair) and lifting of core assembly by opening of top cover and other items for inspection/examination of core assembly, after mainor repairs its fixing in original position, or for major repairs transformer to make it ready for transportation to carry out rewinding work in workshop (Transportation charges shall be borne by the contractor against item No 4 & 5 of schedule ‘A’ here in after)

M&L for transportation of unserviceable transformer of capacity upto 630 KVA from site to workshop and return back for installation it on original position/location after repairing from workshop (Rate is deemed to be inclusive of transportation, T&P and man power) complete all as specified and directed .

Shifting of serviceable transformer of capacity upto 630 KVA from MES store Yard/Sub Stn (indoor/outdoor) for installation in place of unserviceable transformer and back after replacing with repaired transformer

M&L labour for alternative arrangement by hiring, transportation of transformer of capacity upto 250 KVA in place of unserviceable transformer on hire basis for 15 days including, installation, connecting and testing of transformer and return back after installation of repaired transformer complete all as specifed and directed. Note : (i) Repairing of transformer have to be completed within 15 days no extra cost will be paid toward hiring charges beyond 15 days . Moreover contractor shall not be allowed to shift the hired transformer until it is replaced by the repaired transformer . In case any fault /burning /peeling of painting and any other defects occured in hired transformer the contractor shall have to made good himself from his own expenses. (ii) Contractor should check the available infrasturcture and to be sure regarding safety of hired transformer before installation . The rete quoted is deemed to be include transportation cost, earthing lead etc. (iii) In case the defective transformer not repaired & installed on its site within the specified period of 15 days from the date of handing over to contractor a panelty recovery @ Rs 1000 /- per day will be charged from his dues. During this period contractor shall not be allowed to shift the hired transformer until it is replaced by the repaired transformer . No extra cost beyond 15 days will be paid to contractor on this account.

All as per item No 5 here-in -before but capacity of transformer 315 to 630 KVA.

Taking down the unserviceable copper wound from transformer of capacity upto 250 KVA, opening top cover, and carrying out the following work complete all as specified and directed :- (a) Dismantling of all attachment viz breather assembly, conservator, oil temperature gauge, HT/LT bushing etc. and keeping aside for reuse. (b) Taking out the core with winding assembly. (c) Removing of complete winding from core and dismantling the core, cleaning of core laminate sheet and keeping aside for reuse (d) Cleaning of complete transformer tank oil fins, removing of sludge, and making the inside surface of tank dry by blowing of hot air as directed and specified. (e) Painting of outside surfaces of transformer complete by means of spray machine as directed.

All as per item No 7 here-in -before but capacity of transformer 315 to 630 KVA.

(a) Repairs to the transformer of capacity upto 250 KVA as follows :- (i) Rewinding of HT/LT leg coil complete using copper wire /strip of appropriate gauge, size and turn as per existing with double paper coated insulation including all requisite insulating materials like packing sleeves, separator, tapes etc. heating, varnishing the core and winding assembly after framing up top and bottom steel structure of transformer all as specified and directed. (ii) Replacement of all insulating materials other than incorporated for rewinding of HT/LT coils as per existing. (iii) Fixing only HT procelain bushing with studs, nuts, washers 3 Nos. and LT procelain bushing with studs, nuts, and washers 4 Nos. and connection with primary and secondary windings and reconnecting with the main terminals as required and directed. (iv) Fixing only breather assembly, conservator, oil temperature gauge after proper cleaning, minor repairs etc. as required and directed. (v) Replacement of all unserviceable gasket from top cover, HT/LT bushing with new one by using rubberised gasket sheet 4.0mm/6.0mm thick duly pasted with suitable adhesive .

(vi) Replacement of unserviceable bolts with new one and fixing of existing serviceable bolts, nuts, washers of different sizes and tightening properly. (vii) Repositioning of core and winding assembly inside the tank, assembling complete unit and making the transformer ready for filling oil and subsequent testing as directed. (b) Disconnecting the alternative transformer, taking down the same, Re-installation of repaired indoor/outdoor transformer on 4/6 pole structure/plinth/inside sub station, connecting electrically and mechanically, testing and commissioning complete all as specified and directed. (c) The contractor shall give written warranty of one year from the certified date of completion for the repaired transformer. Note :- HT/LT leg coils and transformer oil required for top up shall be measured and paid separately under relevant items of this Schedule here-in-after as supply only.

All as per item No 09 here-in -before but capacity of transformer 315 to 630 KVA.

Supply only HT coils with super enamelled copper wire /DPC of high quality duly matching with the existing guage and impedance.

Supply only LT coils with super enamelled copper wire strip/DPC of high quality duly matching with the existing guage and impedance.

M&L for ON load Centrifuging and dehydration including filteration and cleaning of transformer oil by dehydration machine of 11/0.433 KV transformer at site and topping up deficient transformer oil including testing of samples before and after dehydration and filteration complete all as specified and directed. Note :- Deficient quantity of Transformer oil required for top up shall be measured and paid separately under relevant items of this Schedule here-in-after as supply only.

Supply only transformer oil of approved quality as per IS having dielectric strength of 45-60 KV in 2.5mm gap for filling in transformer or for topping up as required and directed

Supplying and fixing in replacement (at site/workshop), Porcelain Transformer bushing on LT (440 Volt) side, including brass stems conical bush and gasket after disconnecting electrically and mechanically for indoor/outdoor transformer of capacity upto 250 KVA and re-connecting electrically and mechanically, testing complete all as specified and directed. Note.The rates quoted is deemed to be included the cost of necessary labour charges for draining out & re-filling transforer oil, opening of top cover by unscrewing nut, bolts washers and suitable size pad type bus bar almuminium and nut bolt washers etc.

All as per Serial item No 15 here-in-before but capacity 315 KVA to 630 KVA

Supplying and fixing in replacement (at site/workshop), Porcelain Transformer bushing on HT (11 KV) side, including brass stems conical bush and gasket after disconnecting electrically and mechanically for indoor/outdoor transformer of capacity upto 250 KVA and connecting electrically and mechanically, testing complete all as specified and directed. Note.The rates quoted is deemed to be included the cost of necessary labour charges for draining out & re-filling transforer oil, opening of top cover by unscrewing nut, bolts washers and suitable size pad type bus bar almuminium and nut bolt washers and reconnection

All as per Serial item No 17 here-in-before but 315 KVA to 630 KVA

Supplying and fixing in replacement, Silica Gel Breather assembly including vent pipe and Silica Gel for indoor/outdoor transformers, capacity upto 250 KVA complete all as specified and directed.

All as per Serial item No 19 here-in-before but capacity 315 KVA to 630 KVA

Supply and fixing 3mm thick Sheet glass (each not exceeding 0.9 Sqm) ordinary quality and glazing with oil putty on cabin of OTI and WTI gauge of transformer upto capacity 630 KVA complete all as specified and directed.

Supply and fixing Thermometer of transformer capacity upto 630 KVA complete all as specified and directed.

Material & Labour for painting of transformer of capacity upto 250 KVA with existing colour, with spraying machine, after cleaning, preparation of outer surface of transformer, including writing of SM No, MES and capacity of transformer complete all as specified and directed.

Material & Labour for painting of transformer of capacity 315 to 630 KVA with existing colour, with spraying machine, after cleaning, preparation of outer surface of transformer, including writing of SM No, MES and capacity of transformer complete all as specified and directed.

Earthing complete in replacement with galvanized steel earth plate electrode of size 60cmx60cmx6 mm thick, buried directly in ground (earth pit not less than 3.5 m below normal ground level) with top edge of earth plate not less than 2.5m below normal ground level, connected to galvanized iron strip 32X6 mm by means of electric arc welding of galvanised iron or steel as shown in electrical plate No 3 of SSR Part I, connected to earth test point and the equipment on the other side complete all as specified, including testing and commissioning complete all as directed. Note : (a) The unit rates quoted against this item shall be deemed to include the cost of excavation and earth work in any type of soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 as in pit, precast RCC 1:2:4 type B-1 with necessary reinforcement as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 40 mm bore GI pipe medium grade etc. (b) The quoted rates shall also deemed to include the cost of earth test point and earth strip/GI earthing and protection pipe upto 7.5 meter beyond the earth plates electrode.

M&L 32x6mm galvanised iron strip for earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in pipe or any other indicated situation for loop earthing etc complete all as specified and directed.

Disconnecting electrically & mechanically outdoor transforemrs upto 630 KVA capacity, lowering down/getting out from plinth carefully for repairing /making of plinth of transformer and re- connecting electrically and mechanically after repairing/making of plinth , testing and commissioning complete all as specified and directed. Note:- (a) The rates quoted is deemed to be included for hydra, men power and other items required for temp energization of transformer. (b) Plinth work shall measured and paid separetely under items of sch of work here-in-after.

Disconnecting electrically & mechanically indoor/outdoor transforemrs upto 250 KVA capacity, lowering down/getting out from plinth, 4/6 pole Structure carefully for prevednt/stoping for leakage of transformer oil (at site/sub station) including opening of top cover, draining out transformer oil and other items and storing the oil in suitable container (container to be provided by the contractor to keep aside for re -use) including replacement of all unserviceable gasket, after repairing/stoping of oil leakage the same re-connecting electrically and mechanically, testing complete all as specified and directed Note.The rates quoted is deemed to be included the cost of necessary labour charges for draining out & re-filling transforer oil, T&P, hydra, gasket, opening/closing of top cover by unscrewing nut, bolts washers etc.

All as per item No 28 above but of capacity 315 KVA to 630 KVA

Supply and fill in replacement silica gel for transformer complete all as directed

Supply and fixing of Operating mechanism of 11 KV RMU for Earthing switch of VCB.

Supply and fixing of Operating mechanism of 11 KV RMU for spring charging of VCB

Supply of Operating mechanism interlock of 11 KV RMU for Operation + Earthing switch of VCB

S&F 4 mm dia MS wire 75x75mm mesh, made upto into mattress or cages appx 2.0 mtr height and fixed with flate iron/angle by welding in position and directed including complete all as specified and directed. Note:- MS angle, MS flate, Nuts, Bolts and washer will be measured and paid sepretly.

M & L for two coats of synthetic enamel paint of silver colour on wire mesh surfaces including preparation of surfaces complete all as specified.

M&L for replacement of MS angles for post and struts of fencing around transformer plinth etc drilling holes, flate iron fillet for securing wire mess by welding to angle iron frame and framed work as in door/ gate of angle and wire mess. Door to be fixed by 03 Nos 100mm long hinges and one sliding door bolt of 300mm long for locking arrangement complete all as specified including.

Material and labour for cement concrete type D-2, 1:4:8 (using 40 mm graded crushed stone aggregate) for sub floors, sub-bases, floors, foundation and paving etc complete all as specified and directed .

M&L Brick work with sub-class 'B' bricks, straight or curved on plane exc 6 m mean radius, built in cement mortar 1:4 complete as specified and directed

M&L Rendering 15mm thick on fair faces of brick work or concrete surfaces in cement mortar (1:4) finished fair and even without using extra cement complete all as specified and directed including

Material and labour for coarse aggregate filling using stone gravels, rounded, of size n exc. 43 mm suitable to site, in the area covered by four pole structures complete all as specified and directed.

M/L for cement concrete type B-2, 1:2:4 (40mm graded aggregate) 150mm thick complete all as specified and as directed.

Material and labour for crushed stone aggregate of size 20mm, for loose filling under 2/4/6 pole structure / along the transformer plinth in side the fencing area after cleaning/ surface excavation and including making boundary around the 2/4/6 pole structure/ transformer fencing area using sub class B brick etc, complete all as specified.

Plateform :- M&L for Brick Masonry ( Using sub class 'B' Brick) platform of size 3m x 3m x 1 m hight , built in CM 1:4 complete with excavation & earth work , PCC 1:4:8 type D-2 in foundation , sub class 'B' brick work in CM 1:, 15 mm thick rendering in CM 1:6 on sides and top of the brick work , upto 150 mm below ground level , supply and fixing of 02 Nos MS Chennels of suitable size for balancing of Transformer embedded in PCC 1:2:4 type B-1 up to 100 mm Thick RCC 1:3:6 with 10 mm steel bar includding 20 mm graded aggregate , including provn of stair case on one side complete all as specified and directed .

M&L in replacement of HT jumper on 2/4/6 pole structure complete with RYB sleeve

M & L for tree cutting arround upto 8 mtr away from transformer & 2/4/6 pole structure

Material and labour for cleaning of 2/4/6 pole structure for loose filling under 2/4/6 pole structure / along the transformer plinth in side the fencing area after cleaning/surface excavation including taking out grass/herbs.

Note : contractor should procure and provide 50 % of the material as listed above within 15 days of the placing of work order and shall be verified by the Eng-in-charge

M/s Adhikari construction co.

DS CONSTRUCTION

Vijay Electricals

ALLIED CONSTRUCTION

Buddham Builders

BLUE HILL ELECTRICAL AND ELECTRONICS

M/s Sohanil Construction

MV Engineers And Contractors