PROVN OF TROLLY MOUNTED 500 KVA TRANSFORMER AT MIL STN JAMMU UNDER GE SATWARI

Supply, installing commissioning and testing of 500 KVA, 11/0.433 kv, 3 phase, 50 hz, EEL-3 of IS 1180(Part-1) 2014, onan cooled oil immersed Copper wound outdoor type step down transformer complete with first filling of IS: 335 ISI Marked filtered & dehydrated transformer oil and other standard fittings / accessories and 7 position off circuit tap changer (tapping range +7.5% in steps of 2.5% each) with vector Group dyn11, powder coated and to be changed means of hand operated off laod/tap changing gear including 1st filling of new transformer oil of dielectric strength not less than 40 KV with all fittings and accessories such as LT box at LT side, breather, oil leveler & assembling with trolly complete work etc all specified and directed as per site requirement complete all as specified and as directed by Engr-in-Charge. Note : Necessary manufacturer certificate to be obtained for 99 % copper purity before installation. (a). Transformer shall be oil immerse, naturally self cooled doubled coppper wound, winding core type, MS radiator cooled tank complete first filling of IS I marked filtered & Dehydrated transformer oil plus 5 % spare oil as per IS 335 of 1980 . The temprature of oil shall not rise more than 40 degree centigrade to ambient temp and 50 degree centigrade of winding. Transformer shall be painted with two coats of epoxy paint as per IS-632 The transformer shall be complete with all standards fittings and accessories required as per latest specification, gauges

(b). The followings standard accessories shall also be provided:- (i) Rating and diagram plate. (ii) HT Cable Bushing 11 KV Rating. (iii) LT Cable Bushing 0.433 KV Rating. (iv) Earthing terminals. (v) Lifting lugs. (vi) Air release hole with plug .(vii) Breather assembly with silica gel. (viii) Oil Temprature Meter. (ix) Oil drain walve with plug (x) Oil Lavel indicator (xii) Filter Valve with plug (xiii) Air Release plug (xiv) 7 position off circuit tap changer (tapping range +7.5% in steps of 2.5% each) with vector Group dyn11

Supply and fabrication of rigidly rubber welded construction, 4 wheeled, 4 Ton Trailer ribbed bed mild steel trolley suitable for mounting of 500 KVA transformer step down outdoor type complete with suitable cap of 01x LT feeder pillar box (01 no incomer MCCB 630 amps capacity, 50 kA) and allied stranded fitting. The Trolley should with stand field use & will not be adversely affected by mechanical hazards like bump shock, vibration etc. the overall dimensions of the 4 wheeled Trailer is as under:- length-3500 mm,width-2500 mm, Height-900mm from ground, incl. The trailer is designed to be towed by any load carrying vehicle. Note: The rate quoted includes the rate of 01 no LT feeder pillar box of description as mentioned.

Supply and fabrication of rigidly rubber welded construction, 4 wheeled, 4 Ton Trailer ribbed bed mild steel trolley suitable for mounting of 500 KVA transformer step down outdoor type complete with suitable cap of 01x LT feeder pillar box (01 no incomer MCCB 630 amps capacity, 50 kA) and allied stranded fitting. The Trolley should with stand field use & will not be adversely affected by mechanical hazards like bump shock, vibration etc. the overall dimensions of the 4 wheeled Trailer is as under:- length-3500 mm,width-2500 mm, Height-900mm from ground, incl. The trailer is designed to be towed by any load carrying vehicle. Note: The rate quoted includes the rate of 01 no LT feeder pillar box of description as mentioned.

Axles and suspensions :- Front and rear axles are made of solid 63 mm square EN8 material and 50 mm square EN8materials respectively. The specification of the front full straight Axle (Rigid) and rear axle should be Stub Axle type (Ackere man type) 1700 mm at ground level and bearing type should be Tapper Roller make SKF(ptNo-30209, NBC, KOYO or equi. A hand breaker level is mounted under the frame, on the LH side of the trailer connected by a rod and YOKE to an equalizer and by cables to the wheels. Through these connections, it actuates the breaks in the rear wheels. An eccentric provided on the emergency breaks operating lever permits

Draw Bar and Steering arrangement:- The draw bare is 'V' shaped frame with forged steel toying eye. Steering head is bolted to the chassis front cross member by high tensile bolts. Steering yoke is pivoted in the steering head by a steering bolt. Draw bar is connected to steering yoke. Steering rod leavers and ball stud joints. Steering arms LH and RH are pivoted on the axle blank through kina nins

Spare Wheels Carrier :The spare wheels with suitable storage arrangement is provided as per specification given below:- Wheels size -6.00G-16degSDC, Tyre 9.00x16/5 deg, 16PRCC pattern (40 PSI for normal roads), Tyre pressure 30 PSI for cross country track. In addition, the trailer must have the following items.(d) Supply, fabrication and fixing of outdoor type LT feeder pillar box fabricated from suitable gauge CRCA sheet, powder coated with weatherproof finish, complete with hinged lockable door, gland plate, cable entry arrangement, internal aluminium busbar, neutral link, earth terminal and all necessary hardware. Provided with MCCB 630 amps, 415 volt, 4 pole, 50KA rupturing capacity, Icu=50kA, Ics=100% Icu with thermal magnetic release with standard accessories as applicable. The LT feeder pillar box shall be properly positioned aligned and securely mounted on the trolley platofrm by providing suitable MS supports, clamps and welding. The complete assembly shall be rigid, mechanically strong and suitable for safe transportation of the mounted equipment, complete all as specified and directed by engr-in-charge. (a) Side railing 65cm with welded melded mesh 25x50x4 mm galvanised iron wire (b) Painting with two coats synthetic enamel paint over a coat of red oxide zinc chrome primer. (c) System for free movement of tyres at 180 degrees in the toeing direction will be avoided with provision of mild steel plate, bushing bearing system with addn channel frame and complete with all other items to make the functional all as enarifiad and directed.

(d) Supply, fabrication and fixing of outdoor type LT feeder pillar box fabricated from suitable gauge CRCA sheet, powder coated with weatherproof finish, complete with hinged lockable door, gland plate, cable entry arrangement, internal aluminium busbar, neutral link, earth terminal and all necessary hardware. Provided with MCCB 630 amps, 415 volt, 4 pole, 50KA rupturing capacity, Icu=50kA, Ics=100% Icu with thermal magnetic release with standard accessories as applicable. The LT feeder pillar box shall be properly positioned aligned and securely mounted on the trolley platofrm by providing suitable MS supports, clamps and welding. The complete assembly shall be rigid, mechanically strong and suitable for safe transportation of the mounted equipment, complete all as specified and directed by engr-in-charge.

Suitabile cap of 01x LT control panel ( ACB 800A ,415 volt ,4 pole manual draw out type , 50KA rupturing capacity,Icu=Ics=Icw with adjustable setting 80% to 100% thermal magnetic release with standrad accessories as applicable and 02 outgoing MCCBs 400A arrangment with bus bar,Digital amp meter,volt meter and RYB indicators) and allied stranded fitting incl locking arrangmet complete all asspecified directed by engr-in-charge.

Supply & Fixing XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty earthed) with aluminium conductor, 11 KV, grade cross sectional area 95 Sqmm 3 Core laid in trenches/road crossing/on wall etc complete and all as specified directed by engr-in-charge.