Military Engineer Services Tender

Taking shutdown, disconnecting all connections & lifting of old tansformer from existing plateform & shifted to MES store / a place whereas directed complete all as specified and directed. Note :- Quoted rate is deemed to include rate of T&P and necessary manpower to shift transformer at a place whereas directed.

Supply, installation, testing and commissioning out door type, floor mounted step down transformer, 11KV/ 433 Volts ( At no load) AC 3 ph, 50 Hz, present energy efficient level - 2 confirming to relevant IS (ISI maked and BEE Approved), capacity 500 KVA CRGO with M4 grade, core type, double copper wound, oil immersed, naturally cooled, oil natural- air -natural (ONAN), Class A insulation with external cooling tubes, delta connected on primary side (HV) and star connected on secondary side( LV) in accordance with vector group Dyn- 11 with neutral brought out on secondary side (LV) and having tappings +/- 5% at the step of 2.5% on HV side to be changed by means of hand operated off load tap changer gear. The maximum temprature rise should not exceed 40 degree C in oil and 45 degree C in HV /LV windings when measured by resistance method after countinuous full load run on an ambient temp of 50 degree C complete all as specified & directed and shall also comprises of the following:- (a) 01 cable box chamber on HV side ( primary) consisting of 03 Nos poreclin bushing with copper bus bar complete with nuts and washers, with 01 No cable gland suitable for XLPE HT cable. (b) 01 cable box chamber on LV side ( secondary) consisting of 04 Nos poreclin bushing with copper bus bar complete with nuts and washers, with 02 No cable gland suitable for XLPE LT cable. (c ) Oil conservator tank with filter type drain plug and oil level gauge. (d) Dehydrating brether with first fill of silica gel. (e) Explosive vent, thermameter pocket on tank cover, oil level guage, oil drain filter valve, lifting hucks, oil filling hole with cap/ plug with connection plate, Air release valve plug at four Nos plate, soil cast steel detachable rollers complete. (f) 01 No 100 mm dia, dial type thermometer, vapour pressure type, having range 0-120 degree C with metal guard having maximum perimeter temperatre reading indicator with resetting device.

(g) 02 Nos earthing terminals on tank cover to facilitate fixing of 32 x 6 mm copper earth strip for earthing of body. Rating plate and terminal marking plate. (h) Extra bushing for neutral, in the LT cable box for providing independent set of earthing for natural. (j) First fill of new and unused transformer oil, as per relevant IS, filtered and tested up to 60 KV die electric strength at 2.5 mm air gap between testing electrodes (make: savita / Power Oil). (k) Providing adequate size and Numbers of channels, embedded in flour, for movement of transformers. (l) Buchholtz relay complete with electric connection up to relay - 01 No (m) Provn of new platform with suitable working space for inspection as per manufacturer specification and drawing having load bearing power more than 4.5 ton or suitable for 500 KVA transformer including plastering & whitewash. This also including demolition of existing platform, returning, filling, leveling and ramming and removal of extra material. Note:- (i) The transformer should be designed and manufactured by Original Equipment Manufacturer (OEM ) only and drawing shall approved by GE before manufacturing of the same. (ii) OEM will stand warranty of 02 years for complete design, supply and inspection upto site service support.