CWE/FZR- /2021-22 Spl repair/replacement to distribution transformer under GE (East) Ferozepur Cantt

Amount

Taking down of the UNSV/ defective transformers of capacity 100 KVA to 150 KVA (out door/Indoor type) from the existing site located in cantt area after disconnecting the in/out connection, transporting the transformers to workshop/factory for repairs,testing and transporting the same back after repairs and installing, hoisting of transformers on two/four pole structure at height not less than 3 metre, making all electric connections with HT/LT side jumpers and leads including earth connections etc and testing, complete all as specified and directed.

All as per item No 01 here-in-before but 160 KVA to 250 KVA.

All as per item No 01 here-in-before but 300 KVA to 500 KVA. Notes : for items 1 to 3 above :- (a) Oil container for collecting old transformer oil will be arranged by the contractor. (b) T&P such as chain pulley ,crane for loading, unloading ,trasporting and for installing and hoisting shall also be arranged by the contractor.

M & L for opening the top of defective transformer of any make and capacity 100 KVA to 150 KVA, removing gasket and lifting up the core assembly carefully to check the condition of transformer for repairs, dismantling core lamination to the extent required for taking out defective/ unserviceable coil for check after disconnecting all connections and re-assembling of core lamination to original position after positioning of existing serviceable coil alongwith new coils carefully to check the condition of transformer to ascertain the repairs/replacement of U/S parts including cleaning the tank, removing sludge, dirt cleaning the coils of limbs, re-fixing the core assembly and reassembling of transformer after repairs including zinc chromate paint inside , replacement of nuts bolts with washers thimbles etc and connections with aluminium strip and including welding, denting etc and testing the transformer at factory/workshop, complete all as specified and directed.

All as per item No 04 here-in-before but 160 KVA to 250 KVA.

All as per item No 04 here-in-before but 300 KVA to 500 KVA. Notes : for items 4 to 6 above :- (a) The payments of new coils and other parts to be replaced shall be made as supply only under relevent items here-in-before, cost of fixing these items is included in item No 4 to 6. (b) Cost of dehydration of transformer oil is not included under these items.

Supply only HT/LT coil DPC copper winding strip of existing size (gauge), grade and in weight complete with insulating material for transformers 100 KVA to 500 KVA capacity, complete all as specified and directed. NOTE : Fixing charges of formed coil included in unit rate under Item 04 to 07 above

Supply only HT brass spindles including, heat resistance gasket, nuts, bolts, washers for transformers of capacity 100 KVA to 150 KVA as per existing size, dia & length, complete all as specified and directed.

All as per item No 8 here-in-before but for transformers of capacity 160 KVA to 250 KVA as per existing size, dia & length, complete all as specified and directed.

All as per item No 8 here-in-before but for transformers of capacity 300 KVA to 500 KVA as per existing size, dia & length, complete all as specified and directed.

Supply only HT porcelain bushing for transformers of capacity 100 KVA to 500 KVA, complete all as specified and directed.

Supply only LT brass spindle including heat resistance gasket, nuts, bolts, washers for transformers of capacity 100 KVA to 150KVA, complete all as specified and directed.

All as per item No 12 here-in-before but for transformers of capacity 160 KVA to 250 KVA .

All as per item No 12 here-in-before but for transformers of capacity 300 KVA to 500 KVA.

Supply only LT porcelain bushing for transformers of capacity 100 KVA to 500KVA, complete all as specified and directed.

Supply only CRGO silicon core as per existing thickness, size & design for transformer 100 KVA to 500 KVA, complete all as specified.

Supply & fix silica gel breathers assembly filled with silica gel complete for transformers of capacity 100 KVA to 500 KVA, complete all as specified and directed.

Top up with fresh transformer oil in transformers in-situ and for newly rewinded transformer after filtration/dehydration with minimum dielectric strength of 45 KV, complete all as specified and directed.

Dehydration/filtration of transformers oil of existing transformers (out door/Indoor, step up/step down), at site by means of oil dehydration machine having arrangement for heating to remove the moisture silt/sludge and wastage removing arrangement etc to make the oil fit for use in accordance with IS-1886 to achieve minimum dielectric strength of 40 KV by continuous process of dehydration, complete all as specified and directed. Note - (a) Testing machine shall be arranged by the contactor (b) Electricity for running dehydration machine & testing, shall be provided by the department free of cost. (c) Any damage caused to transformer during dehydration/filtration shall be responsibility of the contactor.

Cleaning sprinkled transformer oil, grease and all other foreign materials from external surfaces of transformers of capacity 100 KVA to 500 KVA and preparing the surface to receive paint and applying one coat of synthetic enamel paint (spray painting) including writing MES number and SM number with white paint over black base in letters not less than 10 cms in height,complete all as specified and directed. NOTE :- Painting shall be carried out at site.

Karan Engineers

Marwaha Builders