REPAIR/MAINT OF TRANSFORMERS AND ALLIED WORKS UNDER AGE E/M (MH) UNDER GE SATWARI

Amount

Handling, transportation of unserviceable transformer 11/0.433 KV of capacity 50 KVA to 630 KVA of any make, model & type including disconnection all electric cable, earth lead, clamps and channels etc. & taking down from pole (4 pole structure/2 pole mounted) or plinth mounted by any means of mechanically operated pulley/ mechanical crane, transportation to MES store Yard / workshop and factory for repair/maint with & including transporting back of transformer to existing places to MES store yard or other existing substation after repair & hoisting / lifting and placing in position and securing properly on pole mounted/plinth mounted including connecting all cable, earth lead, clamps and channels etc as per site requirement and testing after installation, complete all as specified and directed by Engineer-in-Charge.

Srl item No 1 Contd … Notes :- (i) Please note that If any damage to transformer/OH line/cables occur during handling, transportation or during hoisting/lifting, the same will be rectified by the contractor without any extra cost to the department. (ii) Transportation to workshop and back to site /any required T&P like hydra/recovery etc. are to be arranged by contractor and rate for which is deemed to be included in the item. (iii) Standby transformer of same capacity will also be provided by the contractor and rate for which is deemed to be included in the item.

Supply and fixing of HT side MS cable termination box for transformer fabricated out of 3 mm thick CRCA sheet including one coat of synthetic paint over a coat of red oxide primer for 100 KVA to 500 KVA transformer with necessary nuts, bolts and including disconnection of HT cables and reconnect the same after fixing the box, complete all as specified and directed by Engineer-in-Charge.

Supply and fixing of LT side cable end box for transformer fabricated out of 3 mm thick CRCA sheet including one coat of synthetic paint over a coat of red oxide primer for 100 KVA to 500 KVA transformer with necessary nuts, bolts and including disconnection of LT cables and reconnect the same after fixing the box, complete all as specified and directed by Engineer-in-Charge.

Opening the top cover of transformer step down 11 KV to 0.440 KV, of capacity 50 KVA to 250 KVA of any make, model & type out door/ indoor type, draining out oil in clean barrels, dismantling of cover & taking out the defective/burnt out HT/LT coils cleaning the tank and getting out the dust particles & replacing old defective coils with new coils, refitting the top cover and other accessories such as providing sundry items & reassembling after repairs to the entire satisfaction of the Engineer-in-Charge and heat treatment connecting of all the electrical connections and other accessories and making the transformer absolutely leakproof, pouring oil in the transformer making all electrical connections testing after repair, complete all as specified and directed by Engineer-in-Charge.

Srl item No 4 Contd … Notes:- (i) If retrieved transformer oil's dielectric strength is very less, then it will be replaced with new one as directed by Engineer-iIn-charge and same will be measured & paid under relevant item. (ii) If any items like winding of HT coil, reconditioning of LT coil, spares like breather, silica jel to be replaced for smooth functioning of transformer shall be measured in relevant items. (iii) Any minor item like nut, bolts are included in this item rate.

Description all as per Srl item No. 4 here-in-before but transformer of capacity 300 KVA to 630 KVA.

Winding of HT coils of transformers with super enamelled copper winding wire of appropriate gauge along with allied insulating material of capacity 50 KVA to 630 KVA of transformers, complete all as specified & directed by Engr-in-Charge.

Winding of LT coils of transformer with cotton braided copper wire /strip of appropriate size along with allied insulating materials of capacity 50 KVA to 630 KVA of transformers, complete all as specified and directed by Engineer-in-Charge.

Taking out LV coils from its position for reconditioning by replacing worn out insulation including supplying and providing new insulation, making the LV coils to its original shape and fixing to its position after insulation, testing and commissioning complete all as specified and directed by Engr-in-Charge.

Taking out existing worn out bush rod with accessories and replacement of HT bushes (11 KVA) with rod assembly complete of metallic alloy (brass gun metal) of suitable dia and length including nuts, washers, insulator, packing oil sealing bushes for transformer of capacity 50 KVA to 630 KVA, complete all as specified and directed by Engr-in-Charge.

Taking out existing worn out bush rod with accessories and replacement of LT bush (440 volt) with rod assembly complete of metallic alloy (brass gun metal) of suitable dia and length including nuts, washers, packing oil sealing bushes suitable for transformer of capacity 50 KVA to 630 KVA, complete all as specified and directed by Engr-in-Charge.

Cork sheet gasket (for top cover) of transformers of various capacities including taking out existing perished gasket, complete all as directed by Engr-in-Charge.

Filtration, heating and dehydration of old transformer oil for increasing dielectric strength not less than 45 KV, if the results below 45 KV, the oil shall be replaced with new oil, complete all as directed by Engr-in-Charge. Note :- New oil required for topping oil levels or for replacement maint shall be measured and paid separately.

Supply, heating and filling new transformer oil in transformer for topping up levels or for replacement of unfit oil (New oil shall be confirming to IS-335) dielectric strength not less than 65 KV, complete all as directed by Engr-in-Charge.

Silica gel assembly complete with silica gel in transformer breather of various capacities i.e. 50 KVA to 630 KVA including taking out existing unserviceable, complete all as directed by Engr-in-Charge.

Supply, connecting, commissioning and testing of dial type temperature gauge 110 mm dia temperature range 0-100 degree celsius with thermostat built in switch including taking out existing unserviceable temperature gauge, complete all as directed by Engr-in-Charge.

Supply and fixing LT terminal plate of transformer capacity 63 KVA tp 630 KVA and taking out unserviceable LT terminal plate complete all as specified and as directed by Engr-in-Charge.

Material and labour for spray painting of transformer with one coat of weatherproof gray synthetic enamel paint (first grade) after removing all dust, rust, carbon and oily spots, including well preparation of surfaces and writing /marking SM/MES No as 25 mm stencil using white paint complete all as specified including cleaning of temperature gauge and silica gel, oil temperature level for transformer rating 63 KVA to 250 KVA complete, all as specified and directed by Engr-in-Charge.

Description all as per Srl item No 19 here-in-before but for transformer of capacity 300 KVA to 630 KVA.

Material and labour for preparation of old painted surfaces steel/iron of structure of any description in 33/11 KV MRS for 33KV incomer line complete (one incoming 4 pole structure with cross arms and one way 33 KV line structure with 33 KV post bus bar structure to complete 11KV isolator with fuse post structure) with two coats of aluminium paint including preparation of the existing surface, complete all as specified & directed by Engr-in-Charge.

Material and labour for cleaning preparation of old painted surfaces of transformer of 3.15 MVA 33/11 KV with spray paint single coat of existing colour and writing MES/SM No as 25mm stencil using white paint including preparation of the existing surface, complete all as specified & directed by Engr-in-Charge.

Cleaning of bushing and terminal of HT potential transformer 33000/11000 volts (outdoor type) by CTC liquid and checking of oil level and oil dielectric strength (BD test) and proper connection checking and testing with following :- (i) Meggar testing between phase to phase and phase to earth. (ii) Output voltage checking.

Shifting of transformer of any capacity from 2 pole structure / PCC foundation / sub station after disconnecting HT / LT connections, earthing leads etc. and reinstallation the same at new location up to a distance of 8 Kms, complete all as specified & directed by Engr-in-Charge.

M/S RAJ ENGINEERS

BMMJ TRADERS AND ENGINEERS

M/S S K Electricals Regd

M/S SHREE KRISHANA ENERPRISES