PROVN OF 400 KVA TRANSFORMER AND VOLTAGE STABLIZER AT AFS MANDORE UNDER GE (AF) NO- 02 JODHPUR

Amount

Supply, installing, testing and commissioning Indoor type step down transformer, 11000/433 Volts (at no load) AC, 3 phase, 50 Cycle, 400 KVA, core type copper wound,ONAN oil immersed, naturally cooled, Oil natural, air natural (ONAN), with external cooling tubes, delta connected on primary side (HV) and star connected on secondary side (LV) in accordance with vector symbol. DYN- 11 (Vector Group) with neutral brought out on secondary side (LV side) and having tapping at (+/-) 2.5% to (+/-) 7.5% in steps (+/-) 2.5% HV side to be changed by means of hand operated off load tap changer gear. The maximum temperature rise should not exceed 45 degree Celsius in oil and 55 degree celsius in HV/LV coil winding when measured by resistance method after continuous full load run on an ambient temp of 50 degree Celsius. The transformer shall be IS 1180 : 2014, Level 2 marked and shall comprise of the following :-(a) One cable box on HV side (Primary side) consisting of 3 Nos porcelain bushing suitable for 11 KV complete with bushing, copper rods, nut and washers. (b) One cable box on LV side (Secondary side) consisting of 4 Nos porcelain bushing with copper rods suitable for 0.433 KV complete with bushing, copper rods, nut and washers. (c) Oil conservator with filter type drain valve and oil level gauge.(d) De-hydrating breather with first fill dehydrating agent (silica gel).(e) Explosive vent.(f) Thermometer pocket on tank cover.(g) One No 100 mm dia, dial type thermometer, vapour pressure type having range 0-120 degree Celsius with metal guard having maximum perimeter reading temperature indicator with resisting device for transformer.(h) Two earthing terminals to be provided diagonally on either side of tank cover to facilitate fixing of 32X6 mm galvanized iron earth strip for earthing of neutral and body.(j) Rating plate and terminal marking plate. (k) Oil level gauge. (l) Oil drain filler valve. (m) Lifting lugs (n) Oil filling hole with cap/plug with connecting plate complete.(o) Air release valve plug. (p) Four plain solid cast steel detachable rollers.(q) First filling of new and unused transformer oil IS-335/93 (fourth revision) marked filtered and tested up to 50 KV dielectric strength at 2.5 mm air gap between testing electrodes.(p) Earthing bolt/stud. (q) Off load tap changer switch with locking arrangement for HV variation from +5% to (-) 5% in step of 2.5%. (r) Rating and Diagram Plate. (s) Unidirectional roller wheel 04 Nos plain solid cast steel detachable rollers with locking arrangement. (t) Other accessories as per manufactures design. (u) Percentage impendence 4.00 % to 5.00. Note: The contractor shall produce the original copy of purchase voucher in support of amount paid by him with all taxes. excise duties surcharge etc delivery to the site of work including cost of installation, commisioning and testing charges etc actually paid by him.

Supply, laying, testing and jointing of cable XLPE insulated screened PVC beaded, galvanized steel strip or wire armoured, electric power cable (heavy duty) with aluminium stranded conductor, 11000V (E) grade of size 95 sqmm 3 core complete all as specified and as directed.

Supply, laying, testing and jointing of cable XLPE insulated screened PVC beaded, galvanized steel strip or wire armoured, electric power cable (heavy duty) with aluminium stranded conductor, 1100V grade of size 400 sqmm 3.5 core complete all as specified and as directed.

Supply ,fixing and testing ,commissioning of Servo Controlled Voltage stabilizer for automatic operation, three phase naturally oil cooled indoor type & designed for input variation between 340 V to 460 V with output voltage stabilized at 415 with accuracy ± 2.5% and speed of correction 50 Volts per second and of capacity 400 KVA complete all as specified and as directed.

Supply & jointing cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrinkable type joint complete with jointing material & accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 95 Sqmm complete all as specified and as directed.

Material and labour for earthing in any type of soil complete with galvanized steel earth plate electrode 60cmx60cmx6mm thick, buried directly in ground, vertically to a dpeth not less than 2.25 mtr deep below ground level with top edge of the earth plate at depth not lss than 1.5 mtr below ground level earth plate surrounded by 15 cm thick and packed layers of charcoal, dust and common salt, earth lead GI strip 32 x 6mm by means of bolts, nuts, check-nuts and wahsers of galvanised iron and thimbles and of earth wire protected by galvanised iron pipe light grade 40mm bore and water pipe 20mm bore GI medium grade with funnel and wire mesh complete 1:3:6 type C-1 using 20mm graded stone aggregate in lieu of CI cover and frame etc all as specified and shown in electrical plate No 3 of SSR- 2009 (Part-1) complete all as specified and as directed.

S & F GI strip 32x6mm burried in ground/laid in floor/fixed to wall on saddles/on porcelain insulators etc all as specified and as directed by Engineer in charge.

RISING ELECTRICALS

MONA GENERATOR SEVICES PVT. LTD.

Nvimal Engineers and Contractor

SHISHODIA ENTERPRISES

Nikhat nirman