AME for repairs, reconditioning and overhauling of Transformers available in ESD-West,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).

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 die-electric breakdown strength.

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

Supply and fixing of distribution type lightning arrester 11KV 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.

Supply and fixing of 11KV, 400A, 3 Phase central post rotating double break type AB switch (Isolator) as per IS 9921) without earth plade, gang operated, Horizonal 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 12KV (IS 2594 and IS 5350), Hot Dep galvanizing hardware, GI pipe, Nuts and bolts etc, complete

Dismantling charge of old AB switch

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

Supply and fixing of 1.0 KG Transparent Silicagel.

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 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 25mm. The work will have to be done at site

Painting with Aluminium paint grade-1 of approved make including brushes to have an even shade including cost and conveyance of all materials as directed during execution complying with standard specification etc, complete.

.-do- Two coats of old iron work

Painting to transformer with 2 coats Zinc chromate red oxide duly scraping existing paint followed by 2 coats of hammer ton grey paint etc, complete

Less buy back offer for old oil from existing transformers

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).

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 die-electric breakdown strength.

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

Supply and fixing of distribution type lightning arrester 11KV 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.

Supply and fixing of 11KV, 400A, 3 Phase central post rotating double break type AB switch (Isolator) as per IS 9921) without earth plade, gang operated, Horizonal 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 12KV (IS 2594 and IS 5350), Hot Dep galvanizing hardware, GI pipe, Nuts and bolts etc, complete

Dismantling charge of old AB switch

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

Supply and fixing of 1.0 KG Transparent Silicagel.

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 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 25mm. The work will have to be done at site

Painting with Aluminium paint grade-1 of approved make including brushes to have an even shade including cost and conveyance of all materials as directed during execution complying with standard specification etc, complete.

.-do- Two coats of old iron work

Painting to transformer with 2 coats Zinc chromate red oxide duly scraping existing paint followed by 2 coats of hammer ton grey paint etc, complete

Less buy back offer for old oil from existing transformers

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 sixty nine thousands nine hundred sixty six and paise twenty only)