AME for repairs, reconditioning and overhauling of Transformers available in ESD-K and P dam,Tirumala for 2026-27

Routine maintenance of transformer, including testing of insulation resistance, oil break down strength, Reconditioning / replacement of silicazel, cleaning of transformer and topping upto oil level if required (extra cost will be paid for oil).

Quarterly (a)Checking of oil leakage at Tank, bushing and cleaning etc., (b)Checking oil level in conservator tank. (C )Checking of Earth Flat connections at transformers. (d)Checking of colour of Silicagel and re activating or replacing. (e ) Checking the diaphragm for cracks. (f)Maintenance Reports to be submitted. (g)Measurement of Voltages at Transformer and tail ends of the feeder. (h)Measurement of loads in ampehers on earth. (i )Taking IR values of the winding. (j)Above Maintenance Reports to be submitted. yearly a). Collecting oil samples for die- Electric Strength. b). Above reports to be submitted.

Testing of Transformer oil for dielectric breakdown strength.

Removing the existing transformer from the plinth / Pole and refixing the standby transformer of following capacity including connections etc., complete………….

Replacing old and unserviceable gasket of top cover plate of transformer having following capacity. -…………

Replacing old and unserviceable gasket of bushing for the following Transformer capacity. -………….

up to 315 KVA HT

up to 315 KVA LT

Replacement the H T / L. T burnt out winding coils of distribution transformer including rewinding, varnishing and vacuuming etc., duly retaining the removed burnt winding coils by the Contractor / Firm- …….

For copper coils

For aluminum coils

Insulating HT / LT copper / aluminum coils for Transformers.

Painting to transformer with 2 coats Zinchromate red oxide duly scraping existing paint followed by 2 coats of hammerton grey paint etc., complete. -……….

Replacing ……….. for distribution Transformer by new one.

H.T bushing with metal parts

L.T bushing Upto 315 KVA

L.T bushing 500 / 1000 KVA

L.T bushing rod with metal parts up to 315 KVA

L.T bushing rod with metal parts 500/1000 KVA

Loading, transportation and unloading of transformer from site to Workshop or vice versa. ………

Filteration of transformer oil as per ISS specifications filters to dielectric strength above 40KV (per Ltr) excluding transportation.

at workshop (per Ltr)

Supply and fixing of distribution type lightning arrester 11 KV 5 kA as per IS 3070 with mounting base on the existing DP structure

Supply of new and tested transformer oil as per IS-335 -1972 (per Ltr)

Supply and fixing of 11 KV ,400 A 3 phase central post rotating double break type AB switch(isolator) as per IS 9921) without earth blade,gang operated ,Hozizontal type,operating mechanism with GI spring loaded reverse loop type fixed contact,solid HD electrolytic copper tubular moving contact with silver/Nicle plated at end points,9 Nos post insulators of 12 Kv(IS 2594 and IS 5350) ,Hot Dip galvenizing hardware,GI pipe,Nuts and bolts etc., complete.,

Painting with Aluminium paint grade-I of approved make including brushes to have an even shade including cost and conveyance of all materials as directed during execution complying with standard specifications, etc., complete.

-do- Single coat for new iron work

Dismantling Charge of old AB switch

Measuring of earth resistance in the Sub-station yard and building upto the required level if necessary by suitable methods, necessary instruments for measuring the resistance shall be arranged by the Contractor at his cost. The resistance Value shall be with in the permissible limit prescribed. A Cetificate for testing of earth resistance shall be furnished

Supply and fixing of 1.0KG Transparent Silicagel Breather

Less buy back offer for old oil

Supply and Making heat shrinkable type indoor/ outdoor/straight through terminations/joint kit of approved make suitable for 3 core 240/300/400 Sq mm XLPE insulated 33 KV cable, with required components, preparation of cable ends, testing etc. as required of following sizes. Makes: Raychem /M seal/ Denson/ Multy/ Transeal-Hongshang

Supply and run of 50mm X 6mm G.I Strip for earth electrode to required places buried in ground at not less than 0.5 mtrs below the ground level after excavation of trench and filling with 6" sand all around the earth strip and refillig etc., and giving neessaryconnections with 3/8" x 2" G.I Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 50mm X 6mm G.I Strip for earth electrode to required places on Surface of walls, flooring including cost of all accessories and giving necessary connection with 3/8"x2" GI Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 6mm G.I Strip for earth electrode to required places buried in ground at not less than 0.5 mtrs below the ground level after excavation of trench and filling with 6" sand all around the earth strip and refilling etc., and giving necessary connections with 3/8" x 2" G.I Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 6mm G.I Strip for earth electrode to required places by Surface in walls, flooring including cost of all accessories and giving necessary connection with 3/8"x2" GI Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 6mm copper Strip for earth electrode to required places buried in ground at not less than 0.5 mtrs below the ground level after excavation of trench and filling with 6" sand all around the earth strip and refilling etc., and giving necessary connections with 3/8" x 2" Brass, Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 6mm Copper Strip for earth electrode to required places by Surface in walls, flooring including cost of all accessories and giving necessary connection with 3/8"x2" Brass Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 3mm copper Strip for earth electrode to required places buried in ground at not less than 0.5 mtrs below the ground level after excavation of trench and filling with 6" sand all around the earth strip and refilling etc., and giving necessary connections with 3/8" x 2" Brass, Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 3mm Copper Strip for earth electrode to required places by Surface in walls, flooring including cost of all accessories and giving necessary connection with 3/8"x2" Brass Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

NOTE (i)The rates are of basic rates excluding GST. (ii) The applicable GST will be reimbursed/paid as per actuals on production of proof. (iii)Statutory deductions will be made as per norms, if applicable. Any modalities imposed on GST by the Government from time to time, the same will be implemented.

Routine maintenance of transformer, including testing of insulation resistance, oil break down strength, Reconditioning / replacement of silicazel, cleaning of transformer and topping upto oil level if required (extra cost will be paid for oil).

Quarterly (a)Checking of oil leakage at Tank, bushing and cleaning etc., (b)Checking oil level in conservator tank. (C )Checking of Earth Flat connections at transformers. (d)Checking of colour of Silicagel and re activating or replacing. (e ) Checking the diaphragm for cracks. (f)Maintenance Reports to be submitted. (g)Measurement of Voltages at Transformer and tail ends of the feeder. (h)Measurement of loads in ampehers on earth. (i )Taking IR values of the winding. (j)Above Maintenance Reports to be submitted. yearly a). Collecting oil samples for die- Electric Strength. b). Above reports to be submitted.

Testing of Transformer oil for dielectric breakdown strength.

Removing the existing transformer from the plinth / Pole and refixing the standby transformer of following capacity including connections etc., complete………….

Replacing old and unserviceable gasket of top cover plate of transformer having following capacity. -…………

Replacing old and unserviceable gasket of bushing for the following Transformer capacity. -………….

up to 315 KVA HT

up to 315 KVA LT

Replacement the H T / L. T burnt out winding coils of distribution transformer including rewinding, varnishing and vacuuming etc., duly retaining the removed burnt winding coils by the Contractor / Firm- …….

For copper coils

For aluminum coils

Insulating HT / LT copper / aluminum coils for Transformers.

Painting to transformer with 2 coats Zinchromate red oxide duly scraping existing paint followed by 2 coats of hammerton grey paint etc., complete. -……….

Replacing ……….. for distribution Transformer by new one.

H.T bushing with metal parts

L.T bushing Upto 315 KVA

L.T bushing 500 / 1000 KVA

L.T bushing rod with metal parts up to 315 KVA

L.T bushing rod with metal parts 500/1000 KVA

Loading, transportation and unloading of transformer from site to Workshop or vice versa. ………

Filteration of transformer oil as per ISS specifications filters to dielectric strength above 40KV (per Ltr) excluding transportation.

at workshop (per Ltr)

Supply and fixing of distribution type lightning arrester 11 KV 5 kA as per IS 3070 with mounting base on the existing DP structure

Supply of new and tested transformer oil as per IS-335 -1972 (per Ltr)

Supply and fixing of 11 KV ,400 A 3 phase central post rotating double break type AB switch(isolator) as per IS 9921) without earth blade,gang operated ,Hozizontal type,operating mechanism with GI spring loaded reverse loop type fixed contact,solid HD electrolytic copper tubular moving contact with silver/Nicle plated at end points,9 Nos post insulators of 12 Kv(IS 2594 and IS 5350) ,Hot Dip galvenizing hardware,GI pipe,Nuts and bolts etc., complete.,

Painting with Aluminium paint grade-I of approved make including brushes to have an even shade including cost and conveyance of all materials as directed during execution complying with standard specifications, etc., complete.

-do- Single coat for new iron work

Dismantling Charge of old AB switch

Measuring of earth resistance in the Sub-station yard and building upto the required level if necessary by suitable methods, necessary instruments for measuring the resistance shall be arranged by the Contractor at his cost. The resistance Value shall be with in the permissible limit prescribed. A Cetificate for testing of earth resistance shall be furnished

Supply and fixing of 1.0KG Transparent Silicagel Breather

Less buy back offer for old oil

Supply and Making heat shrinkable type indoor/ outdoor/straight through terminations/joint kit of approved make suitable for 3 core 240/300/400 Sq mm XLPE insulated 33 KV cable, with required components, preparation of cable ends, testing etc. as required of following sizes. Makes: Raychem /M seal/ Denson/ Multy/ Transeal-Hongshang

Supply and run of 50mm X 6mm G.I Strip for earth electrode to required places buried in ground at not less than 0.5 mtrs below the ground level after excavation of trench and filling with 6" sand all around the earth strip and refillig etc., and giving neessaryconnections with 3/8" x 2" G.I Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 50mm X 6mm G.I Strip for earth electrode to required places on Surface of walls, flooring including cost of all accessories and giving necessary connection with 3/8"x2" GI Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 6mm G.I Strip for earth electrode to required places buried in ground at not less than 0.5 mtrs below the ground level after excavation of trench and filling with 6" sand all around the earth strip and refilling etc., and giving necessary connections with 3/8" x 2" G.I Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 6mm G.I Strip for earth electrode to required places by Surface in walls, flooring including cost of all accessories and giving necessary connection with 3/8"x2" GI Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 6mm copper Strip for earth electrode to required places buried in ground at not less than 0.5 mtrs below the ground level after excavation of trench and filling with 6" sand all around the earth strip and refilling etc., and giving necessary connections with 3/8" x 2" Brass, Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 6mm Copper Strip for earth electrode to required places by Surface in walls, flooring including cost of all accessories and giving necessary connection with 3/8"x2" Brass Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 3mm copper Strip for earth electrode to required places buried in ground at not less than 0.5 mtrs below the ground level after excavation of trench and filling with 6" sand all around the earth strip and refilling etc., and giving necessary connections with 3/8" x 2" Brass, Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

Supply and run of 25mm X 3mm Copper Strip for earth electrode to required places by Surface in walls, flooring including cost of all accessories and giving necessary connection with 3/8"x2" Brass Bolts, Nuts and Washers wherever joints has to be done. The strip has to be either riveted (or) bolted (or) gas welding neatly and all labour charges etc., complete.

NOTE (i)The rates are of basic rates excluding GST. (ii) The applicable GST will be reimbursed/paid as per actuals on production of proof. (iii)Statutory deductions will be made as per norms, if applicable. Any modalities imposed on GST by the Government from time to time, the same will be implemented.

(Rupees Eleven lakhs thirty nine thousands one hundred sixty six and paise seventy seven only)