86216 PROVISION OF TROLLEY MOUNTED SPARE OUTDOOR STEP DOWN TRANSFORMER OF CAPACITY 500KVA/22KV/433V ALONG WITH OTHER CONNECTED ACCESSORIES AT AFMC PUNE UNDER GE (CENTRAL) PUNE

Supply, install, testing and commissioning of trolley mounted step-down outdoor type distribution transformer complete with all standard fittings as per IS: 1180 and latest amendments thereafter, LEVEL III (Maximum Total loss 1422 Wats at 50% load and 4104 Watts at 100 % load at impedance 4.5%, 22KV /433 V (at No load) of Capacity 500 KVA, AC, 3Ph, 50 Htz 4 wire, core type, copper wound (copper 99.9% Purity Electrolytic grade wound) , oil immersed naturally air cooled, Oil natural/Air natural (ONAN) with external cooling tubes/fins, vector symbol Dyn-11, HV-delta, LV-Star connected complete with off load type tap changer (OCTC) hand operated winding Tap for voltage variation from + 5% to -10% in equal steps of + 2.5% of HV, Permissible temperature rise shall not exceed the limits of 45°C when measured by resistance method for transformer winding and 40°C measured by thermometer for top oil. The transformer shall be double wound, core type, non ageing, high permeability CRGO Prime core grade M-OH/ZDKH/TCH grade including of First filling of new transformer oil of suitable dielectric strength.

NOTES FOR SER. ITEM NO. 1.00 ABOVE : (a) The OEM of the transformers should have in house LAB Certificate for Accreditation from National Accreditation Board for Testing and Calibration laboratories. (b) Manufacturer /OEM must have type test / short circuit reports for each & every rating from CPRI / ERDA (matching all the major parameters including the Loss Figure) shall not be older than 5 years. (c) CPRI Short circuit test report for exactly similar transformer (matching all major electrical parameters including Loss Figure) shall not be older than 5 years to be furnished). (d) OEM should be BIS and BEE certified for all the ratings of the transformer that are to be submitted. (e) BLANK (f) BLANK (g) The transformer shall have complete standard fittings such as two earthing terminals with earthing symbols for body, Air release device, rating and terminal marking plates, conservator tank with oil filling hole, filter type drain valve and oil level gauge. The transformer shall also have dehydrating breather with first fill of dehydrating agent (silica Gel), drain cum sampling valve, winding temperature indicator and oil temperature indicator, lifting lugs for the complete transformer as well as core and winding assembly, pressure release device/explosion vent,unidirectional flat rollers , inspection holes, LV earthing arrangement (h) HT side cable box type consisting of 3 numbers of Porcelain bushing with Brass rods complete with nuts and washers, with cable glands suitable for reception / taping out 3 core HT cable 22 KV grade of size upto 185 Sqmm and a LT side cable box consisting of 4 numbers of porcelain bushing with Brass rods (Bimetallic flexible connecter and copper bus bar of suitable rated capacity with insulator support) and an additional neutral terminal brought outside the LV cable box for earthing etcwith complete with nuts and washers, with cable glands suitable for reception / taping out 3.5 core LT cable 1100 V grade of size upto 400 Sqmm. (j) The contractor shall submit a letter of acceptance from the transformer manufacturer along with a sample, seeking approval. The manufacturer must clearly confirm in the letter that their company agrees to provide all requisite details and documentationand certification requirements as mentioned in the succeeding paragraphs.

NOTES FOR SER. ITEM NO. 1.00 ABOVE CONTD.... (k) Expenses/cost of FAT and necessary travel/freight/conveyance/stay expense for inspecting/testing officers as nominated by accepting officer for FAT shall be included in the rate quoted. (l) BLANK (m) The contractor or his authorized representative shall submit the complete documentation and certificates to the Factory Acceptance Testing officer detailed by the department. The details shall include but not be limited to : (i) Rating of Tapping parameters/steps of the transformer. (ii) Maximum permissible temperature rise in the Core and Oil of transformer. (iii) Manufacturer details of the material used in core/winding conforming to CRGO specifications, including, Grade of CRGO, name of the manufacturer along with supporting documents such as invoice copy, mill test certificate, customs certificate, and any other relevant proof. (iv) Test report of the Flux density of the core. (v) Test report of the Overflux withstand capacity, including duration (in minutes) the transformer can sustain for in overflux conditions. (vi) Test report for Noise level of the transformer, as per standard norms. (vii) No-load current consumptionPercentage of the transformer. (viii) Burr level certificate indicating maximum burr level value in the transformer. (ix) Certification of purity of copper used in transformer winding. (n) All transformer test reports must clearly indicate that they pertain to the transformer itself, along with the acceptance parameters and the applicable Technical Authority or literature—such as IS 1180:2014 (Part I) and its subsequent amendments, IS/IEC 60076, CBIP Manual 317, NEMA standards, or any other recognized Government authorized body.

Supply and testing of trolley made out of Structural steel for frame strong enough to bear transformer (500 KVA) having proper space to place Transformer properly. The trolley must posses the following items, but shall not be limited to these only for safe, reliable, and satisfactory performance and as directed by Engineer-in-charge :- (a) Main Chassis Frame MS Channel section minimum of size 100 × 50 mm, heavy duty, conforming to IS standards. (b) Leaf Springs 4 sets, each of minimum 13 leaves, size 70 × 11 × 800 mm, forged steel, ISI marked or equivalent approved make. (c) Axel 2 Nos., MS solid square section 60 × 60 mm, heavy duty, conforming to IS standards. (d) Tyre Assembly 4 Nos., size 7.50 × 16, Nylon type, ISI branded. Make: MRF / CEAT / Apollo / JK / Birla or equivalent ISI marked make. (e) Draw Bar Bolts 25 mm dia, heavy duty, as per IS standards. (f) Towing Hook Spring loaded, 36 mm forged steel, ISI marked or equivalent approved make.

SER. ITEM No. 2.00 Contd.... (g) Light Reflectors 06 Nos., as per safety norms (2 front, 2 rear, side reflectors (h) Turn Table System Heavy duty, suitable for designed load capacity, ISI standard or equivalent approved. (j) Draw Bar (Triangular/circular, Detachable) MS Channel 150 × 75 mm, heavy duty. (k) Platform Sheet MS Chequered Plate, 6 mm thick, full trolley size with extension for LT panel, IS standard quality. (l) Wire Mesh (Side Walls/Protection) MS Angle 50 × 50 × 5 mm with MS Flat 40 × 6 mm frame, welded mesh, ISI marked or equivalent approved. (m) Danger Notice Plates - 04 Nos. 22 KV type NOTE - The above parameters/items are tentative and indicative in nature. They have been prepared for preliminary reference and may vary as per actual ground/site conditions and requirements observed during execution. The contractor shall prepare and submit the detailed drawing of the trolley, duly incorporating all parameters/specifications (including any additions as required for site suitability and obtain prior approval of the Engineer-in-Charge before procurement of materials or commencement of fabrication. The Engineer-in-Charge reserves the right to modifications in design, size, or specifications during the approval stage.

Supply, fix and testing of HT XLPE insulated screened PVC bedded galvanised steel strip or wire armoured, electric power cable (heavy duty) 22000 Volts grade (earthed) with aluminium conductor 3 core 95 sqmm ISI marked confirming to IS 7098 jointing complete all as specified and as directed. Note : Cost of provision of suitable double crimpped lugs and glands / packing at FRFR HT Box shall deemed to be included in quoted rates.

Supply, fix and testing of ISI marked XLPE insulated screened, PVC bedded galvanized steel strip or wire armoured electric power cable (heavy duty) with multi strande aluminium conductor 1100 Volts grade cross sectional area 3.5 core x 240 Sq mm complete all as specified and as directed.

Supply, fix and testing of heat shrinkable end jointing kit for 22 KV (Earthed) grade cable for outdoor type termination jointing and complete with jointing material and accessories suitable for 3 core XLPE armoured Al conductor cables of size 95 sqmm complete all as specified and as directed.