REPAIR/ MAINT OF DISTRIBUTION TRANSFORMERS INCLUDING DEHYDRATION PAINTING, EARTHING AND REPLACEMENT OF SPARE PART AT ROORKEE AND PURKAZI UNDER GE (MES) ROORKEE

Amount

Material and labour for disconnecting of distribution transformer indoor/outdoor type for testing/servicing /cleaning / repair etc, ensuring safety isolation and testing (IR values for HV/LV windings & winding-to-earth) oil level & condition checking (visual and BDV test), checking of bushings, including external inspection and re-connecting after carrying out required repair/testing servicing in the transformers. Recording of all test parameters and preparation of service report for the following capaity of Transformer :- NOTE :-(i) The cost of dismantling and assembly is deemed to be including. (ii) work to be carried out by qualified personael to ensure safe and reliable operation. Preventing maint/servicing of transformer will be carried out by any equipment manufacture/certified firm and work to be carried out as per standrded and recommendations complete in all respect. All test perameter service and report shall be submitted by contractor. (iii) If the transformer winding as per testing is burnt the reason for same should be mentioned in report and countersinged by GE.

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 750 KVA transformer

Material and labour for preventive maintenence/servicing of distribution transformer indoor/outdoor type after disconnection and testing as mentioned item No 1 above , servicing and cleaning of transformer ,checking and tightening of all electrical/mechanical connections, checking of gasket, repairing of leakage e.i replacement of gland, change of brass nut/bolt, removing of corban from connection and joint, minor repair etc complete as directed by Engr- in- Charge for the following capaity of Transformer :- NOTE :-(i) The cost of dismantling and assembly is deemed to be including. (ii) work to be carried out by qualified personael to ensure safe and reliable operation. Preventing maint/servicing of transformer will be carried out by any equipment manufacture/certified firm and work to be carried out as per standrded and recommendations complete in all respect. All test perameter service and report shall be submitted by contractor.

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 750 KVA transformer

M&L for tronsportation of defective transformer declared after testing and recommendation as item No 1above from 2/4 pole structure/ platform mounted substation or AGE E/M store yard to workshop and opening the transformer cover, draining out of transformer oil, assembling, removing of the burnt parts ie. tape, paper insulating strings, removing windings and keeping safe as desired condition etc gently and carefully washing of the dust, rust and dirt from all parts including taking out cooling tubes, welding and re-assembling after carrying out required repair and transporting back to site/MES store yard/ installation on existing 2/4 pole structure/ platform with necessary fixing arrengement including connecting up electrically, commissioning and testing all as directed by Engr- in- Charge for the following capaity of Transformer :-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 750 KVA transformer

Taking down of transformers of capacity from 2/4pole structure or from PCC plateform with due care after disconnecting all HT/LT connections on pole mounted structures, Transportation of transformer from PCC/ 2 or 4 pole structure to any other required location in Roorkee cantt lowering and remounting it on 2/4pole structure or PCC plateform with due care by through crane and reconnection in new location including earthing connection and as directed and specified by engineer in charge for the following capaity of Transformer :-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 5000 to 750 KVA transformer

M&L Segregation of HT leg coil from transformer and making new HT leg coil with insulating copper wire of required gauge craft paper cotton tape HT/LT insulation as per as per IS specification of old transformer including ovening & heating after marking of coil as required of following capacity.

M&L Segregation of HT leg coil from transformer and making new LT leg coil with insulating copper wire of required gauge craft paper cotton tape HT/LT insulation as per as per IS specification of old transformer including ovening & heating after marking of coil as required of following capacity.

Dehydration/ filtration of transformer oil of existing transformer installed at site with portable plant to improve the dielectric strength 50 KV during filling after initial filtration including testing of dielectric strength after dehydration at site NOTE :- (i) All arrengement of DG set of suitable capacity of electric supply for running of dehydration plant, T&P and other items required will be arranged by contractor and deem to be included in the cost of dehydration/filtration and nothing extra on this account will be admissiable. Any damage after filtration shall be solely responsible of Contractor & same shall be repaired without any additional cost. (ii) Dehydration report will be submitted by the contractor. (ii) the case the result is not desirable payment will not made to the contracor

Supplying, filling dehydration and filtration of new transformer oil for toping up/replacement of transformer oil having dielectric strength not less than 60 KV(rms) with gap of 2.5 mm all as conforming to IS 335 of 1993 complete all as specified and directed by Engineer-in-Charge.

Material and labour for replacement of worn out bushing rod made out of brass with heavy duty three nuts and three washer at both ends suitable for HT side all as per IS 3347-5-2 (1979) shape, dia and length suitable for following capacity transformers :-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 1000 KVA transformer

Material and labour for replacement of worn out bushing rod made out of made out brass with heavy duty with nuts and washer at both ends suitable for LV side all as exiting size, shape and length suitable for following capacity transformers :-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 1000 KVA transformer

Material and labour for replacement of worn out porcelain bushing for 11KV HT side indoor /outdoor transformers with rubberised cork sheet washers 4mm thick all as required at site and as directed by engineer in charge suitable for following capacity transformers:-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 1000 KVA transformer

Material and labour for replacement of worn out porcelain bushing for .433 KV LT side indoor /outdoor transformers with rubberised cork sheet washers 4mm thick all as required at site and as directed by engineer in charge suitable for following capacity transformers:-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 1000 KVA transformer

Material and labour for replacement of worn out rubberised cork sheet 4mm thick for transformer top cover all as required at site and as directed by engineer in charge suitable for following capacity transformers:-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 1000 KVA transformer

M & L for Preparation of old surface of transformer for painting externally including fins/radiators removal of all rust/oil/grease and unwanted material and then two coats of synthetic enamel metallic paint by means of spray gun at site of installation of transformer alongwith writing SM No complete all as specified and directed by engineer in charge suitable for following capacity of transformer:-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 1000 KVA transformer

Material and labour for replacement of worn out silica gel breather assembly including silica gel all as per existing sample suitable for following capacity of transformers of any make.:-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 750 KVA transformer

M&L for replacement of fresh silica gel complete all as specified and directed.

Material and labour for replacement of worn out off load tap changer, with matallic tap changing machanizm, 7 positions and making all electrical connection including removing existing one complete all as per existing sample suitable for following capacity of transformers of any make.:-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

Material and labour for oil temperature guage / thermometer (0 degree to 120 degree C) suitable for transformers all as per existing shape and size for any make and model of transformers all as specified and directed by engineer in charge.

Supply and fixing oil drain valve for any type of transformer at site/in workshop all as directed for the following capacity :-

Upto 250 KVA transformer

above 250 to 500 KVA transformer

above 500 to 750 KVA transformer

NOTE :- (i) Item No 9 to 19 : Required condtion and equipments as per standard for replacement of spare to be manitained by conctractor and included in item rate

M&L earthing including testing on completioncomplete with galvanized steel plate electrode 600 mm x 600 mm x 6 mm thick, burried directly in ground vertically in pit of depth not less than 2.25 metre below normal ground level with top edge of the earth plate at a depth not less than 1.5 metre below normal ground level and covered surrounded from all sides with mixture of charcoal and common salt in alternate layers upto 15cm above top of plate and electrode connected to galvanized iron strip 32 x 6 mm size by means of GI bolts, nuts, check nuts and washers, earth strip protected by galvanized steel pipe 40 mm bore (light grade) connected to main switch board or any other electrical equipment all as shown in electrical plate No. 3 of SSR-2009 Part I and including necessary excavation and earth work in any type of soil, 20 mm bore medium grade GI pipe for watering, funnel with wire mesh, PCC (1:3:6), type C-1 chamber (chamber size not less than 300x300x300mm interier diamentions), 50 mm thick cover RCC (1:2:4), type B-1, reinforced with 6 mm dia MS round bars @ 15 cm c/c both way for cover and 50x50x5 ISA MS frame etc, complete all as specified. NOTE: (i) The unit rate includes earth strip and new GI protection pipe upto (maximum 7.5 metre from earth plate) earth point/test point. (ii) If test result are not satisfactory that is not less than 5 ohm, the entire earthing shall be re done without any extra cost

All as per Item No 20 above but Copper electrode 600mmx600mmx3mm thick and copper strip 25mmx3mm thick .Test result should be less than 3 ohms.

bharat contrectors (BID ID -3487682)

himalayan edge enterprises (BID ID -3486445)

M/S ROORKEE ENGINEERING (BID ID -3486535)