GE I R AND D/CHD-40/2023-24 PROVN OF 1 X 1000 KVA TROLLY MOUNTED STAND BY TRANSFORMER AT DIHAR, LEH

Amount

Supply, installation, testing and commissioning of 1000 KVA transformer, step down, 11 KV (primary side)/433 volt (secondary side) as pe IS-1180-2014, BEE Level-11, double copper wound on load suitable for AC, three phase, 4 wire, 50 hz system, outdoor type, oil immersed having Vector group DYN-11, no load voltage ratio- 11/10, 433 KV, Oil Natureal Air Natural (ONAN) cooled with and including first filling of transformer oil and standard fitting/accessories delta connection on HV (primary winding), star connection on LV (secondary winding), with neutral, manually, operated 7 position off load tap changer on HV side to vary secondary voltage to +5% &-10% in steps to 2.5% each including facility to connect buchholz realy of transoformer and control cable XLPE armoured of size 185 sqmm 3 core having length 15 metre including two nos suitable size end termination jointing kit from 11 KV two pole structure to transformer complete all as specified and directed:- (a) HV cable box (without cable gland) and LV cable Box (with cable glands) (b) Oil conservator with filter type drain valve and oil level gauge. (c) Dehydrating breather with first fills of dehydrating agent (Silica Gel) (d) Air release device (e) Thermometer pocket on tank cover. (f) One number 100mm dia, dial type thermometer, vapour pressure type having range 0-120 degree Celsius. (g) Two earthing terminals body earthing and two additional for natural brought out on byushing. (h) Rating plate and terminal marking plate. (j) Oil level gauge, (k) Oil drain valve (l) Lifting hooks (m) Oil filling inlet pipe with plug (n) Bidirectional MS wheels 04 Nos with lock pins. (o) OTI (having contact for alarm and trip) (p) WTI (having contact for alarm and trip) (q) Buchholz relay (contact for alarm and trip) (r) Marshalling box having TTB only. (s) Any other fittings as recommended by the manufacturer of efficient functioning of the transformer. Notes:- (i) Transformer specification shall be as per IS: 1180-2014with amendment No 1, 2, 3 & 4. (ii) The transformer shall be tested as per IS for all routine tests in the factory premises in the presence of rep of Accepting Officer on the receipt of request from the contractor in addition to routine tests. The transformer shall be tested for 10% over load at factory premises for minimum 01 hour after full load cycle of 08 hours. (iii) Ther transformer shall be tested by SEI/EI/AEI before commissiong as & when requested by contractor. (iv) All necessary arrangements i.e co-ordination with the manufacturer & testing officer, arranging equipments and material to facilitate testing at the manufacturer's premises etc. shall be borne by the contractor.

Supply Trolly 4 wheeler of suitable size to accomodate and bear load of 1000 KVA transformer and connected accesories with following specification & details 1.Main chasis made of MS channel min 150x75 mm side runner side runner and cross members channel made of min MS 100x50 mm, 100x50 mm, 2.Leaf springs: 4 Nos leaf spring of size min 70x11x900 mm, consisting of minimum 13 leaf each Axle 02 Nos made of min 75x75 mm square with water proof steel forged hubs and taper roller bearings. 3.Turn table: 02 Nos angle rings min 50x6 mm with male female pipe bushes with loking boll 35 mm Draw bar: Triagular draw bar detachable type made of MS channel min 75x40 mm Towing arrangement Spring loaded steel towing hook of 36 mm round . 4 Floor fully covered with min 5 mm thick MS chequerred sheet. 5.Landing jacks 04 Nos landing jacks fitted on four corners of the trailor.Roof covered with GI sheet & having suitable height from the side all to top of the sheet with MS channel min 50x5 mm carryig capacity 05 Ton (approx). 6 Isolator mounting -63x63x4 mm Box pipe 50x50x5 mm MS plate 75x38 mm C channel clamp for transformer Side wall side wall height min 1900 mm openable three sides made of MS welded wire mesh 4 mm and angle min 35x5 mm supported with min 40x5 mm MS . 7.Insulation mat with danger notice board plate 11 KV HT. 8. New Tyre assembly 04 Nos of size 7.50x16 any standard make Apollo/ JK/ MRF 9.Finishing and painting:- finishiong with grinding and one coat red notice (Primer) and two coats of super synthetic enamel paint (Army green colour) 10. Fitings:- Necessary fittings like 04 Nos light reflectors 02 Nos number plates of suitable size quoted rates. Notes:-(i) The trolley shall be provided as per Drg attached forming part of tender documents. The items not shown in Drg but specified above shall be provided as pe direction of EIC and cost of the same deemed to be covered in quoted rates. (ii) All four side of trolly cage to be provided with danger notice plate for 11 KV HT supply with standard skull and bone sign. The rates for the same will be inclusive in the quoted rate All side of cage and door / roof top should be detachable type for easy dismantling during maintenance of transformer item rate will be inclusive of mounting the transformer on trolley with fixtures and any T&P and labour reqd be provided by the contractor. Before placing the order of trolley drawing of the same should be approved by GE.

HUMERS INFRATECH

Electromech Engineers

SUMEET TRADING CORPORATION

M/S HIGHLAND ENGINEERING

national engineering