AME for repairs and overhauling of distribution Transformers etc, available in ESD-East,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). Annual preventive maintenance of distribution transformers in operation covering insulation resistance oil, Reconditioning/ replacement of silicagel, cleaning of transformer and toppoing upto oil level if required (extra cost will be paid for oil) and the following works schedule to be done.

Scope of work Monthly (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 colour of Silica gel and reactivating or replacing. (e) Checking the diaphragm for cracks. (f) Maintenance Reports to be submitted. Quarterly (a) Measurement of Voltages at Transformer and tail ends of the feeder. (b) Measurement of loads in ampehers on earth

(c) Taking IR values of the winding. (d) Above Maintenance Reports to be submitted. Yearly (a) Collecting oil samples for di-electric strength (b) Above Reports to be submitted.

Testing of Transformer oil for dielectric breakdown strength.

Filteration of transformer oil as per ISS specifications filters to die electric strength above 40 K.V. (per Ltr) at site.

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 and erecting porcelain post type insulator suitable for 11KV line with suitable hardware on existing cross arms.

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 bushing for the following Transformer capacity…..

Upto 315 KVA HT

Upto 315 KVA LT

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 Unloadng of transformer from site to Workshop or vice verse. -Upto 500 KVA

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.

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

Dismantling charges of old AB switch

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

Supply and fixing the 1.0 KG Transporent Silicagel breather

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 resisance shall be arranged by the contractor at his cost. The resistance value shall be with in the permissible limit prescribed. A certificate for testing of earth resistance shall be furnished.

Screen painting on the new existing pre-cast slab available sub.station top of earth pit etc. indicating location, DOM : Date, Values: Ohms. The size of the letter should be minimum 25 mm. The work will have to be done at site

Painting to transformer with 2 coats Zinchromate red oxide duly scraping existing paint followed by 2 coats of hammerton grey paint etc., complete. -up to 500 KVA

Drying the repaired transformer with appropriate heat / air of following capacity of transformers Upto 315 KVA

Supply and fixing of 100 A 11 KV Horn Gap fuse set as per IS 9385 on existing DP structure with 6 nos 24 KV /22 KV post Insulators( IS 5350, Hot dipped Hard ware, fuse wire of required size etc., complete

Supply and Making heat shrinkable type indoor terminations / joint kit of approved make suitable for XLPE insulated 11 KV cable, with required components, prepration of cable ends, testing etc. as required up to 3 core 120 / 150 / 185 Sq.mm sizes. Makes: Raychem /M seal / Denson / Multy / Transeal- Hongshang

Supply and Making heat shrinkable type outdoor terminations / joint kit of approved make suitable for XLPE insulated 11 KV cable, with required components, prepration of cable ends, testing etc. as required of 3 core 120 / 150 / 185 Sq.mm sizes. Makes: Raychem/M seal/Denson / Multy / Transeal- Hongshang

Supply and Making heat shrinkable type straight through terminations / joint kit of approved make suitable for XLPE insulated 11 KV cable, with required components, prepration of cable ends, testing etc., as required of 3 core 120 / 150 / 185 Sq.mm sizes. Make: Raychem / M seal / Denson / Multy / Transeal- Hongshang

Supply and fixing of fabricated M.S clamps/Angles/Channels made out of various sizes of (25mm x 3mm, 25mm x 6mm etc.) MS flat /angles /channels with necessary holes on either side with suitable painting 2 coats of enamel black paint over one coat of red oxide suitable for fixing of cable trays on Angular stands/ channels structures etc., including all labour charges etc., complete

Less buy back offer for old oil from existing transformer

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). Annual preventive maintenance of distribution transformers in operation covering insulation resistance oil, Reconditioning/ replacement of silicagel, cleaning of transformer and toppoing upto oil level if required (extra cost will be paid for oil) and the following works schedule to be done.

Scope of work Monthly (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 colour of Silica gel and reactivating or replacing. (e) Checking the diaphragm for cracks. (f) Maintenance Reports to be submitted. Quarterly (a) Measurement of Voltages at Transformer and tail ends of the feeder. (b) Measurement of loads in ampehers on earth

(c) Taking IR values of the winding. (d) Above Maintenance Reports to be submitted. Yearly (a) Collecting oil samples for di-electric strength (b) Above Reports to be submitted.

Testing of Transformer oil for dielectric breakdown strength.

Filteration of transformer oil as per ISS specifications filters to die electric strength above 40 K.V. (per Ltr) at site.

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 and erecting porcelain post type insulator suitable for 11KV line with suitable hardware on existing cross arms.

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 bushing for the following Transformer capacity…..

Upto 315 KVA HT

Upto 315 KVA LT

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 Unloadng of transformer from site to Workshop or vice verse. -Upto 500 KVA

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.

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

Dismantling charges of old AB switch

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

Supply and fixing the 1.0 KG Transporent Silicagel breather

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 resisance shall be arranged by the contractor at his cost. The resistance value shall be with in the permissible limit prescribed. A certificate for testing of earth resistance shall be furnished.

Screen painting on the new existing pre-cast slab available sub.station top of earth pit etc. indicating location, DOM : Date, Values: Ohms. The size of the letter should be minimum 25 mm. The work will have to be done at site

Painting to transformer with 2 coats Zinchromate red oxide duly scraping existing paint followed by 2 coats of hammerton grey paint etc., complete. -up to 500 KVA

Drying the repaired transformer with appropriate heat / air of following capacity of transformers Upto 315 KVA

Supply and fixing of 100 A 11 KV Horn Gap fuse set as per IS 9385 on existing DP structure with 6 nos 24 KV /22 KV post Insulators( IS 5350, Hot dipped Hard ware, fuse wire of required size etc., complete

Supply and Making heat shrinkable type indoor terminations / joint kit of approved make suitable for XLPE insulated 11 KV cable, with required components, prepration of cable ends, testing etc. as required up to 3 core 120 / 150 / 185 Sq.mm sizes. Makes: Raychem /M seal / Denson / Multy / Transeal- Hongshang

Supply and Making heat shrinkable type outdoor terminations / joint kit of approved make suitable for XLPE insulated 11 KV cable, with required components, prepration of cable ends, testing etc. as required of 3 core 120 / 150 / 185 Sq.mm sizes. Makes: Raychem/M seal/Denson / Multy / Transeal- Hongshang

Supply and Making heat shrinkable type straight through terminations / joint kit of approved make suitable for XLPE insulated 11 KV cable, with required components, prepration of cable ends, testing etc., as required of 3 core 120 / 150 / 185 Sq.mm sizes. Make: Raychem / M seal / Denson / Multy / Transeal- Hongshang

Supply and fixing of fabricated M.S clamps/Angles/Channels made out of various sizes of (25mm x 3mm, 25mm x 6mm etc.) MS flat /angles /channels with necessary holes on either side with suitable painting 2 coats of enamel black paint over one coat of red oxide suitable for fixing of cable trays on Angular stands/ channels structures etc., including all labour charges etc., complete

Less buy back offer for old oil from existing transformer

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 Six lakhs seventy five thousands seven hundred fourty nine and paise sixteen only)