CWE/KAS-98/2025-26 SPECIAL REPAIR TO REPLACEMENT OF INDOOR TYPE COPPER WOUND OIL COOLED STEP DOWN TRANSFORMER 11/0.433 KV CAPACITY 800 KVA INCLUDING CERTAIN CONNECTED ITEMS AT GAMBER WATER SUPPLY INSTALLATION UNDER GE KASAULI

Supply, installation, testing and commissioning of Oil Cooled, Copper wound, step-down "BIS marked & Energy Efficiency Level-3 (EEL-3) labelled" transformer of capacity 800 KVA, plinth mounted, indoor type with latest features complete with standard fittings, HT 11 kV 3 phase delta connected primary side, LT 0.433 kV, 3 phase, 4 wire star connected secondary side, 50 Hz frequency, ONAN (Oil Natural Air Natural) cooling system, tapping on HV side from +5% to -15% in steps of 1.25% through On Load Tap Changing Gear (OLTC) operated via RTCC panel, with 17 tapping positions, including first filling of new transformer oil conforming to IS:335.

Transformer shall be complete with all standard accessories and fittings such as LT box with cable gland, HT box with cable gland, silica gel breather, oil level indicator gauge, drain valve (oil tank), air release valve, temperature gauge, explosion vent, pressure relief device, cast iron wheels, and comply fully with IS 1180 (Part-1) latest amendment, Energy Efficiency Level-3 norms (EEL-3), CPCB guidelines. The transformer shall be provided with a valid BIS license and shall be manufactured by an ISO-certified firm with NABL-accredited lab testing facilities. The transformer shall be manufactured using high-grade CRGO core (M4 or better, POSCO/NLMK), copper from Hindalco/Birla, and structural material from TATA/SAIL. The installation work shall include fixing on plinth, connection of HT and LT cables, earthing, and testing for ratio, insulation resistance, polarity, vector group, and functional commissioning as directed by Engineer-in-Charge.

(viii) Thermometer pocket (ix) Air release plug (x) Silica gel breather (xi) Removable inspection opening (xii) Explosion vent / pressure relief valve (xiii) Oil level indicator (xiv) HV & LV cable boxes with glands (xv) Cast iron wheels (xvi) First filling of new transformer oil (xvii) All internal wiring and connections

Notes : (i) Drawing of transformer shall be approved by the GE before placing order by contractor. (ii) Pre dispatch inspection of transformer shall be carried out be rep of Accepting Officer at manufacturer premises with overall cost quoted by Contractor. Nothing extra shal be payable on this account. (iii) Transformer shall be installed at Gamber water supply Installation located at subathu area under GE Kasauli. After installation of the transformer, the same shall be tested and commissioned by SEI and equipment/ instruments required for testing shall be arranged by Contractor. Cost of the same shall also be deemed to be included in the item rates quoted by the Contractor. (iv) T&P required for testing shall be arranged by contractor within overall rate quoted by the contractor.

Disconnecting of HT and LT cables from existing old transformer of capacity 750 KVA and taking out transformer with the help of crane from Gamber water supply Installation located at subathu area under GE Kasauli and shifting the same at suitable place within 5 km safely without damaging the transformer complete as per directed by the Engineer-in-Charge. Note:- Contractor shall visit the Gamber Pump House location to ascertain the movement of T&P required for loading/ unloading or shifting of Old & New Transformer prior to quoting of rates.

Taking out old HT & LT cables of any size and type from cable duct without disturbing of other cables complete all as specified & directed by Engineer-in-Charge.

Supply, laying, testing and commissioning of HT cable, XLPE insulated, PVC bedded, galvanised steel strip, armoured, heavy duty electric cable with aluminium conductor, 11000 volts grade, of cross sectional area 400 sqmm, 3.0 core confirming to IS specification complete all as specified and as directed by Engineer-in-charge.

Supply, laying, jointing & testing of LT XLPE insulated, PVC bedded, galvanised steel strip, armoured, heavy duty electric cable with aluminium conductor, 1100 volts grade, cross sectional area 630 sqmm 4 core including suitable size of cable lugs and copper strip suitable legnth, nut bolts washer etc for jointing the cable with LT bushing of transformer and including colour coding insulated the strip & cable leads etc all as specified & directed by the Engineer-in-Charge.

Earthing complete with galvanised steel earth plate electrode 60 cm x 60 cm x 6 mm thick burried directly in ground (earth pit not less than 2.25 Metre deep below ground level) with top edge of the plate not less than 1.5 Metre below normal ground level, connected to galvanised earth lead strip 32 x 6 mm dia by means of bolts, nuts, check nuts and washers of GI or steel all as shown in electrical plate No. 3 of SSR Part-I 2009 connected to earthing test point panel all as specified or indicated and testing on completion as directed by the Engineer-in-Charge including necessary excavation & earth work in any type of soil, funnel, PCC chamber (1 : 3 : 6) type C-1, CI pit cover and frame, charcoal, salt including earth lead protected by 40 mm dia 'light grade' GI pipe and 20 mm dia 'medium grade' GI Pipe for watering complete all as specified and directed by Engineer-in-Charge.

Note :- Earth lead strip 32 x 6 mm and GI 40 mm dia protecion pipe upto 7.5 mtr length will be deemed to include in the unit rate quoted.

Supply and fixing of double walled corrugated HDPE duct pipe of 110 mm outer dia, conforming to IS-14930 (Part-II) of appproved color with fittings for cable protection complete all as specified and as directed.

Material & Labour for earth continuity conductor or main earthing lead of size 32 x 6 mm, galvanised iron strip fixed to wall on batten or recess or chases or burried in ground or drawn in conduit/ pipe or fixed to poles or any other indicated suitable for loop earthing complete all as secified and s directed by Engineer-in-Charge.

S&F Heat Shrinkable Cable jointing kit for 11 KV HT (earthed) grade cable for Indoor end termination type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 400 Sqmm complete all as specified and as directed by Engineer-in-Charge.