PROVISION OF ADDITIONAL TRASFORMER AND CONNECTED ITEMS UNDER GE (AF) ADM AREA AT AF STATION AGRA

Supply, installation, Testing, Commissioning of Oil Cooled, Copper wound, Step down down "BIS marked as per Electrical transformers (Quality Control) order, 2014 issued by ministry of Heavy Industries and Public Enterprises & BEE star labelled as per DT notification issued by ministry of power” transformer of capacity 500 KVA plinth mounted outdoor type with latest feature complete with standard fitted HT 11 KV 3 phase, LT 433V 3phase 4 wire,50 Hz, vector group Dyn11,percentage impedance 4.5%, with copper windings, oil immerse, naturally cooled (ONAN) externally cooling tube delta connection on primary HT 11 KV side and star connection on secondary LT 433V with tapping range of +/-7.5 % in step of +/-2.5 on HV side and to be changed by means of hand operated off load tap changing gear including first filling of new transformer oil as per IS:335 (mineral oil) of dilectric strength not less than 55 KV with all fitting and accessories such as LT box with cable gland, HT box with cable gland, Silica gel, breather, Oil level indicator gauge, drain out valve (oil tank), exhaust vent, air release valve, temp gauge, cast iron wheel etc. comply with Energy Efficiency Level- 3 IS 1180 (Part-1)-2014 with amendment no. 4 having total losses @ 50% load 1354W & total losses @ 100% load 3909W. Including following items/ Accessories. Contd. (i) Name, rating & diagram plate (ii) Off circuit tap changing switch (iii) Earthling terminals (iv) Lifting lugs (v )Oil drain valve with plug (vi) Oil filter valve with plug (vii) Conservator with oil filling hole

(viii) Thermometer pocket (ix) Air release plug (x) Silicagel breather (xi) Removable inspection opening (xii) Explosion vent Note : (i) The drawings of transformer with make shall be got approved from GE. (ii) Manufacturer’s inhouse Lab must be NABL approved. (iii) All tests shall be carried out at factory before the dispatch of Transformer inspection officer as detailed by Accepting Officer. (iv) Manufacturer must have ISO Certificates (ISO:9001, ISO:14001, ISO:45001). v) In case of any fault or failure of the transformer during the warranty/defect liability period, the contractor shall be fully responsible to arrange and install a temporary replacement transformer of the same capacty and compatible voltage ratio/vector group and rating within 24 (twenty-four) hours at site to ensure uninterrupted power supply. vi) The rent/hire charges of the temporary transformer, including transportation, installation, operation and removal, shall be borne entirely by the contractor until the original transformer is repaired, tested, and reinstalled in healthy working condition at site, to the satisfaction of the Engineer-in-Charge, at no extra cost to the department.

Excavation in trenches in soft/loose soil n.exc 1.5m wide and n. exc 1.5m depth for laying of cable, errection of poles, stay and pipe line,and getting out complete all as specified and directed

Returning & filling including spreading, leveling watering and well ramming in layers n. exc 25 cm thick in any type of soil complete all as specified.

Removal of excavated soil to a distance n. exc 50 m above the starting point complete all as specified.

Supply & laying double walled corrugated (DWC) HDPE full rounded pipe in 6 mtr lenght conforming to IS 16205 Pt-24 of approved colour complete with fittings for cable protection of size 120 mm outer dia and 103.5 mm inner dia completed all as specified and directed.

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 11000 volts grade, of size 3 core 120 sq mm complete all as specified and directed.

Supply, laying and testing cable XLPE Insulated ,screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 300 sq mm 3.5 core complete all as specified and directed.

M&L Earthing complete with 60cm x 60cm x 6 mm thick GI plate electrode buried in ground vertically not less than 2.25mtrs deep below ground level with top edge of the plate not less than 1.5mtrs below ground level with GI strip of size 32 x 6mm as earthing lead including necessary excavation and earth work (in any of strata) providing charcoal dust, salt mixed with fine sand in continuous layers, PCC (1:3:6 ) type C1 in chember ,Precast 50 mm thick in cement ( 1: 2:4) type B.1 with CI frame with cover, 20mm dia bore light grade GI watering pipe furnel etc fixing of GI Pipe 40 mm bore protection for earthing strip from earth pit to test point complete & making connection all as specified in Electrical plate No 3 and as directed by Engineer-in-Charge.

M & L for Providing and constructing OEM recommended RCC foundation for 500 kVA transformer, including excavation, PCC bed, RCC work with reinforcement, shuttering, grouting, transformer rails (if required), earthing provisions, finishing, curing, backfilling, and making the foundation ready to receive the transformer, complete in all respects as per approved drawings, technical specifications, and directions of the Engineer-in-Charge.(Transformer foundation size should be as per the actual transformer OEM foundation drawing recommentation)