PROVN OF 500 KVA TRANSFORMER AND 50 HP WATER PUMP AT ARMY CAMP JAMSHEDPUR UNDER GE RANCHI

Amount

Supply, installation, testing and commissioning Outdoor type, step down transformer of 500 KVA capacity, 6.6/0.433KV , AC 3 phase, 50 HZ, double copper wound type core, oil immersed, naturally cooled, oil natural Air Natural (ONAN) with external cooling tubes delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with vector group Dyn-11 with neutral brought out on secondary side (LV) and having tappings at (-) 2.5% to 7.5% @ 2.5% on HV side to changed by means of hand operated off load tap changer gear. The maximum temperature rise should not exceed 45 degree celsius in oil and 55 degree celsius in HV/LV winding when measured by resistance method after cotinuous full load run on an ambient temp of 40 degree celsius in oil as prevalling at site.Transformer shall be level -II and confirm to IS :1180-2014 with ammendment no 1,2,3 and 4 .As per gazette notification no CG-DL-E-08042021-226437 dated 08.04.2021 (Amendment no 04 dated March 2021 to IS 1180-2014 ) has been implemented after 30.03.2022. Former EEL-2 &EEL-3 (till 30.03.2022) have become EEL-1 & EEL-2 respectively. However there are no changes in the losses. The transformer shall be complete with the fittings and accessories comprising of items as mentioned here as under:

LT side (secondary side) consisting four Nos porcelain bushing with copper/brass studs, complete with nut & washers complete with copper bus connectors of suitable capacity/fittings material complete.

HT side (primary side) consisting three Nos porcelain bushing with copper/brass studs, complete with nut & washers complete with HT bushing suitable for outdoor mounting of transformer complete.

Oil conservator with filter type drain valve and oil level gauge.strength at 2.5 mm air gap between testing electrodes.

Dehydrating breather with first fill of dehydrating agent (silica gel)

Explosive vent & thermometer pocket on tank cover oil level gauge ,oil drain, filter valve ,lifting lugs ,oil filling hole with cap/plug with connection plate air release valve plug and four nos plain solid cast steel detachable rollers.

One no 100 mm dia , dial type thermometer ,vapor pressure type having range 0-120 degree celcius with metal guard having maximum perimeter temperature reading indicator with resetting device.

Two earthing terminals on transformer body to facitilate for fixing of 50 x 6 mm galvanised iron earth strip for earthing of neutral and body.

Rating and diagram plate and terminal marking plate.

Rates includes extra bushing for neutral on LT side for providing independent set of earthing for neutral 2 Nos.

First filling of new and unused transformer oil , IS 335 marked filtered and tested upto 60 KV dielectric

Note :- Any other items which are not mentioned above but are essential for smooth functioning of transformer shall also deemed to be included in the quoted rates.

M&L for block masonary transformer platform of size 3.0 mtr x 3.0 mtr with height 1.4 mtr above and 0.60 Mtr below GL consisting of cement concrete in foundation of 100mm thick PCC 1:4:8 Type D2 using 40 mm graded stone aggregate, PCC block masonary 1:3:6 in CM (1:4), moorum filling and consolidating inside the block masonery work, 100 mm thick sub base concrete with PCC 1:3:6 and 100 mm thick top PCC 1:2:4 type B2 & 15 mm plaster on side walls in 1:4 CM incl two coats of white wash and providing 2 Nos supporting channel of ISMC 100 of 2.0 Mtr long made of Fe 410 -W (Gde- E- 250) quality- A complete all as directed.

M & L for earthing complete with galvanised steel earth plate electrode 600 x 600 x 6.0 mm thick burried directly in gorund (earth pit not less than 2.25 Mtr normal ground level),and top edge of earth plate not less than 1.5 mtr below normal ground level, connected to galvanised earth plate means of earth wire 4 mm dia with bolts, nuts & check nuts, and washers of galvanised earth plate by iron protection pipe light grade of 20 mm dia and watering pipe medium grade of 20 mm dia and filled with alternate layer of charcoal and common salt, watering funnel with wire mesh, earth pit chamber and cover CI frame PCC 1:3:6 type C-2 all as shown in electrical plate No-3 of SSR part-I of 2009 connected to earthing test point complete all as directed and indicated including all earth work excavation, returning filling and disposal of surplus soil and testing on completion.

Supply, installation, commissioning and testing of centrifugal pumping-motor set with accessories, suction & discharge 80x65mm horizontal split casing pump with CI impeller , greater than or equal to two stage, electric motor driven not less than 37 KW/50 HP, 3 phase, 415V, 50 Hz,1450- 1500 RPM , head of pump greater than or equal to 90 Mtr capacity, including coupled on single base channel MS frame should be able to bear vibration/shock proof, pump of discharge capacity greater than or equal to 24000 GPH including all accessories i.e. base MS frame, coupling, coupling guard, foundation nut bolt washer complete all as directed.Make : Kirloskar/CG/ Havells .

S&F of soft starter variable frequency drive type panel suitable for 50 HP centrifugal pump motor set 3 phase, 415 volt, 50 HP/37 KW alongwith suitable contactor rating , over load relay fitted on CRCA sheet box including connecting copper wire 25 sqmm single core of suitable length for connecting from starter to pump-motor set complete all as directed including following:- Make : Havells, HPL, Universal (a) VFD drive 50HP/37KW/ Make: L&T/Hitachi/Danfoss/ABB/Siemens-01 No. (b) AUX. Contactor 9A with 2NO+2NC For Logic-02 Nos (c) Start/Stop Push Button-02 Nos (d) Ampere Meter-01, (e) Volt Meter-01 No (f) Aluminium Bus Bar 400A (30 x 10mm) TPN-03 Nos (g) MCCB Incomer 160A/4P-01 No (h) Termical block + wiring (j) Cable Duct, (k) R, Y, B Indicating LED Lamp-03 Nos (l) Indicating LED Lamp-On. Off & Trip-03 Nos (m) Sheet: CRCA Sheet Steel 2mm Powder Coated (n)Potentio Meter-01 No, (o) MCB 6A for logic-04 Nos (p)Cooling Fan-01 No, (q) Insulator one lot (r) Gasket -A lot, (s) Control T/F: 440/220VAC-01 Make: Havels/L&T/ABB

M&L for PCC 1:4:8 type D-2 (using 40mm graded stone aggregate) as in foundation, floors etc complete all as directed.

M&L for PCC 1:2:4 type B-1 (using 20mm graded stone aggregate) as in roof kerbs or mud stops rounded or chamfered edges etc complete all as directed.

S&F Steel work trusses including special shaped washer etc. complete using ERW or induction butt welded tubes conforming to I. S.1161- 1979 grade St.-240 complete all as directed.

THE SUVASH AND SONS (BID ID -3069930)