UPGRADATION OF 11 KV SUB STATION IN POST GRADUATE GOVT. COLLEGE FOR GIRLS, SECTOR 11, U.T., CHANDIGARH.

DSR 3.7 Supply, installation, testing and commissioning of following capacity (continuous loading) BEE 3 Star rated (Corresponding Level as per BIS amended upto date of receipt of tender) , 11/0.433 KV step down, 3 Phase, 50 Hz, Dyn 11 vector group, ONAN (Oil Natural Air Natural) copper wound transformer (Electrolytic grade 99.9% pure copper, Core made of first grade Cold Rolled Grain Oriented (CRGO) Core grade MOH or better, suitable for outdoor/indoor applications with On Load Tap Changer (OLTC) on HV side having AVR relay and Remote Tap Changer Control (RTCC) for automatic sensing of incoming voltage, automatic operation of OLTC and facility for remote and manual operation of OLTC HV side in range of +5% to -15% in steps of 2.5%, having cable end boxes on HV side suitable for 3x300 sqmm XLPE cable of 11 KV grade, including bus trunking arrangement on LV side including supplying and laying of copper conductor multicore control cable from transformer to HT breaker/panel for safety tripping, complete with all accessories and safety provisions as per relevant IS Code including first filling of filtered dehydrated oil, i/c supplying and grouting of suitable M.S. Channel with all accessories and transformer shall be confirming to IS : 2026 (Part 1 to Part 5), IS : 1180 and duly ISI Marked and as per CPWD specifications complete in all respects etc as required at site. The maximum flux density in any part of the core and yoke at rated voltage and frequency shall be such that the flux density with + 12.5 percent combined voltage and frequency variation from rated voltage and frequency does not exceed 1.9 Tesla. The permissible temperature-rise shall not exceed 35 dg.C for oil and 40 dg. C up to 200 KVA and 40 dg.C for oil and 45 dg. C for above 200 KVA for winding. Inside of tank shall be painted with varnish or liquid resistant paint. For external surfaces one coat of thermo setting powder paint or one coat of epoxy primer followed by two coats of polyurethane base paint shallbe used. IS: 1180 (Part 3) shall be referred to for paint thickness for normal to medium corrosive atmosphere. For highly polluted atmosphere and special application external paint work shall be as per direction of Engineer-in-Charge. Design ambient condition : a) air temperature 50 deg C, b) Relative Humidity 90 % Max, c) Seismic Zone as per location of site, d) Altitude as per location/site. Noise level Shall not exceed limits as per NEMA TR-1 with all accessories running measured as per IEC 551 / NEMA standard. The transformer should have QR code which should contain drawing, test report OEM manual,Geo- Tag of manufacturing location etc. Marking Each transformer 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. Fitting and Accessories : The following fittings shall be provided:- a) Two earthing terminals with the earthing symbol b) Oil level gauge indicating oil level at minimum, 30°C and maximum operating temperature; c) Air release device (for non-sealed type transformers) d) Rating and terminal marking plates; e) Silica gel breather f) Drain-cum-sampling valve (¾″ nominal size thread, IS 554) preferably steel with plug for three phase transformers; g) Thermometer pocket with cap; h) Oil filling holes having (1¼″ nominal size thread) with cover (for sealed type transformers without conservator); i) Lifting lugs for the complete transformer as well as for core and windingassembly; j) Pressure relief device or explosion vent above 200 kVA; k) One filter valve on the upper side of the tank (for transformers above 200 kVA); l) Unidirectional flat rollers (for transformers above 200 kVA); m) Inspection hole (for transformers above 200 kVA); n) HV side neutral grounding strip (where one of the HV bushing terminal is connected to earth); o) Buchholz relay for transformers above 800 kVA. p) Arcing horns or suitable rating lightning arrestors for HT side – 3 Nos. q) Bird guard; r) Oil temperature indicator and winding temperature indicators for transformers above 200 kVA with suitable tripping mechanism above permissible limit s) Jacking pads (for transformer above 1 600 kVA); t) Additional Neutral separately brought out on bushing for earthing. u) Magnetic oil level gauge

MAIN PANEL (NORMAL SUPPLY) Supplying, Installation, Testing & Commissioning of Modular, Sectionalized (Form-4B Construction) Low Voltage Panel suitable for 415 V, 3 Phase, 4 wire 50 Hz AC supply system as per standard IEC 61439 Part-1 & Part-2 as Totally Type Tested Assembly and of suitable size fabricated in compartmentalized design from CRCA sheet steel of 2mm thick for frame work and covers & doors of 1.6mm thick sheet, 3 mm thick for gland plates with stiffeners wherever required, having vibration free structure chemically treated with seven tank process before painting for surface treatment and powder coated, with suitable electrolytic grade high conductivity Aluminium busbar extensible type, DMC/SMC bus bar supports, bottom base channel of MS section not less than 100mm x 50mm x 5 mm thick, fabrication shall be done in transportable sections, entire LENGTH panel shall have a common copper earth bar of suitable size at the rear with 2 Nos. earth stud, solid connections from main bus bar to switch gears with required size of Aluminium bus bars and control wiring with 2.5 Sq.mm. PVC insulated copper FR conductor S/C cable for voltage & Current respectively. The board shall be dust and vermin proof with degree of protection IP42, free standing type mounted on base channel as per complete item no.2 of DNIT.

35 Sq.mm. 3.5 Core PVC Aluminum conductor Armored cable.

50 Sq.mm. 3.5 Core PVC Aluminum conductor Armoured cable.

70 Sq.mm. 3.5 Core PVC Aluminum conductor Armoured cable.

120 Sq.mm. 3.5 Core PVC Aluminum conductor Armoured cable.

S/E of 4 nos. sand buckets of 10 ltr. Capacity each made out of 24 Gauge G.I sheet. The buckets with sand shall be hanged on Suitable size of angle iron stand fabricated out of 1 ¼ x 1 ¼ x1/8” angle iron having hooks for hanging the buckets in two rows. The job includes the cost of painting with two coats of red paint of superior quality after one coat of primer on buckets and stands to complete the job up to the entire satisfaction of the Engineer–in–charge.

Supply of Erection of medium size first aid box made of 16 gauge MS sheet of size 14”x7”x5” with 6 wound dressings, 3 burn dressings, 13 gms absorbent cotton wool, one dressing scissors, one bottle of spirit of sal volatile, 1 tube of burn ointment (Burnol) tablets of aspiring, 1 No. artificial respirator.

Supply and Erection of shock treatment chart written in Hindi and English and local language duly framed in wood frame with glass complete as required as per India Electricity Act. (Safety rules).