PROVN OF TROLLY MOUNTED TRANSFORMER AT MIL STN BARABANKI UNDER GE (EAST) LUCKNOW

Amount

Supply, installation, testing and commissioning 250 KVA (continuous loading capacity) 11/0.433 KV step down, 3 Phase, 50 Hz, Dyn 11 vector group, ONAN cooling, copper wound (Electrolytic grade 99.9% pure copper) transformer, core made of first quality Cold Rolled Grain Oriented (CRGO) sheet MOH grade or better suitable for out door/indoor applications with Off Load Tap Changer on HV side in range of ±2.5%, ±5% and ±7.5% in steps of 2.5% having cable end box on both sides to accomodate 3Cx95 sqmm 11 KV XLPE cable on HV side & 3.5Cx185 sqmm XLPE cable on MV side including first filling of filtered dehydrated mineral oil confirming to IS:335. The transformer shall be ISI marked as per IS:1180 (Part-1)/2014 with amendment No 4, for EEL-3. The permissible temperature-rise shall not exceed 40 dg.C for oil and 45 dg.C for winding. Tank of transformer shall be painted internally with liquid resistant paint and externally with one coat of thermo setting powder paint or one coat of epoxy primer followed by two coats of polyurethane base paint.

The transformer shall have following standard fittings/accessories:- (a) Two earthing terminals with the earthing symbol. (b) Lifting lugs for the complete transformer as well as for core and winding assembly. (c) Air release device. (d) Oil filling inlet pipe with plug. (e) Drain outlet pipe with brass gate valve. (f) Conservator tank with oil level indicator (g) Oil seal type transparent breather with silica gel (h) Two numbers inspection covers. (j) Two numbers thermometer pockets. (k) Pressure relief device or explosion vent. (l) Unidirectional flat rollers. (m) Oil level gauge indicating oil level at minimum, 30°C and maximum operating temperature

(n) WTI and OTI with suitable tripping mechanism above permissible limit. (o) Marking shall be provided with rating plate made of anodized aluminum/ stainless steel material securely fixed on the outer body, easily accessible, as per IS: 1180 Part-3. The entries on the rating plate shall be indelibly marked. (p) The transformer should have QR code which contain drawing, test report, OEM manual, Geo-Tag of manufacturing location etc. (q) Any other fittings/accessories necessary for satisfactory operation of the transformer shal be provided whether it is specifically mentioned or not in the item. Note:- Pre-dispatch inspection (PDI) and all routine tests stipulated in relevant standards shall be carried out at OEM's premises in the presence of nominated representative of the Accepting officer. The transformer OEM must have an in-house NABL accredited lab for carrying out all routine tests of transformer

M & L for complete trolley with flat top platform for min mounting of transformer of size 250 KVA. The size of platform 2 mtr x2.5 mtr, frame made out of structural steel MS sheet for platform 6 mm thick mounted on 4 wheels with 2 Nos axels wheels with rim tyre, complete with towing arrangement , jalli (XPM) around platform opening arrangement and locking arrangement from both side along range for eassy loading and unloading of transformer including bending and drilling holes, covered with GI Sheet painting with two coat of synthetic enamal paint over a coat of primer overall steel and iron surfaces complete.

Tecnical data is given below:- Size Dimension: L-3658mm x W-1829mm x H-2300mm (+- 10 mm) Main Chassis : 100 x 50 mm M.S Channel (6 mm thickness) Suport Channel : 75 x 40 mm M.S Channel (8 mm thickness) Floor : 6 mm Plate (approx) Side walls : Welded Wire Mesh Rear Door : Fixed by hinges and lock Axle : 02 Nos 63 mm Square Rim : (04 Nos) Double plated Tyres : (04 Nos.) 7-50:16 Paint : Sky Blue Enamel Paint Toe Hook : Forged Steel

Suspension : Axle will be fitted with leaf spring/suspension Weight : Approx. 1760 kg Roof : Covered with GI Sheet Carrying Capacity : 5 Ton (Approx) Bus bar Panel 3 mm thick outdoor type having 01 Nos of MCCB 300 Amps 4 pole and busbar 400 Amps copper -04 Nos with suitable legs fixed on trolly with suitable nuts, bolts and welding

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 95 sq mm

Supply, laying and testing cable Insulated ,screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded copper conductor of size 95 sq mm single core complete all as specified and directed

M & L for Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink end type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 sqmm to 120 sqmm complete all as specified and directed.

Supply and fix 25 mm dia 2 mtr long solid copper bar with 10 sqmm copper cable single core 20 mtr long connected with copper lugs at one side of copper rod and other end tappered to burried in ground in earth and outer end having copper thimble to connect the cable necessary all as specified and directed.

Diamond Electric Co. (BID ID -3404239)