SPECIAL REPAIR/REPLACEMENT OF BER HT INSTALLATION TRANSFORMER AT CQA (GS), UNDER GE (I) KANPUR

Amount

M&L for taking out of existing Transformer, of capacty 600 KVA with HT OCB/ VCB 11 KV / 433 V, AC, 3 Phase, 50 Hz, by using suitable T&P and shifted to MES Yard ( within 10.00 KM range) including disconnecting , removing existing connections / fittings / fixtures etc complete all as as specified and as directed.

Supply, Installation, Connection, Commissioning and Testing of distribution Transformer, Step Down, Outdoor Type, Platform Mounted with standard fittings, 11 KV / 433 V (at No load), AC, 3 Phase, 50 Hz, of 630 KVA, level-III capacity, Double Copper Wound, Oil immersed, CRGO Core type Naturally cooled, Built-up with class "A" insulation, having Primary Voltage (HT) 11 KV and Secondary Voltage (LT) of 433 Volts, Delta connected on 11 KV Side & Star connected on 433 Volts side, designed & constructed with particular reference to Tropical Condition, conforming to IS – 1180 with latest amendment complete all as specified and directed and comprising of the following Specification and Fittings: Continuous Rating : 630 KVA No-Load Voltage Ratio : 11 KV / 433 V Tapping on HV [%] : ± 7.5, ± 5, ± 2.5 (Off load) Phase & Frequency : 3 Phase & 50 Hz Connection : Delta Star Vector Group : DYN 11 Cooling : ONAN Type : Outdoor

Terminal Arrangement: (a) HV & LV Side: Cable Box (b) Quad furcating cable box with five compression glands for PVC Cable and One additional neutral terminal shall be brought out separately for earthing purpose on LV Side. (c) First filling of new and unused Transformer Oil (IS – 335 Marked), filtered and tested up to 50KV dielectric strength at 2.5mm air gap between testing electrodes. Certification of dielectric strength shall be submitted by the Contractor after filling the oil. (d) Apart from routine tests mentioned in these tender documents and relevant IS, pre-commissioning inspection of Transformer shall be carried out by Senior Electrical Inspector / Electrical Inspector.

Fittings: (a) Externally hand operated Off–Circuit Tap Switch with position indicator and locking device. (b) Conservator with Oil Gauge, filling hole with plug & drain hole with plug (c) Undercarriage with four plain rollers (d) Oil filling hole cum air release plug (e) Drain Valve cum Sampling Valve (f)Top Filter Valve with Plug (g) Rating Plate with Diagram Plate (h) Lifting lugs for Transformer (j) Lifting lugs for Core (k) Earthing Terminals (l) Thermometer Pockets (m) Silica Breather (n) Explosion Vent (o) Double Float Buchholz with alarm and trip contacts including control cable of copper conductor of size & length from Marshalling Box to Relay of VCB (p) 150mm size Oil Temperature indicator, dial type with alarm and trip contacts (q) 150mm size Winding Temperature indicator, dial type with alarm and trip contacts (r) Buchholz Relay with 2 Shut-Off Valves (s) Marshalling Box with Double Window (t) OCTC

Supply, install ,testing and commissioning SF6 insulated outdoor type compact R.M.U. extandable on both sides with rated voltage 11 KV rated current 630 A, short circuit breaking current 16 KA and making capacity 40 KA ,fully arc proof metal enclosed, free standing, floor mounting, flush fronted type consists of manually operated non draw out type SF6 filled load break switch-01 No (Incomers) and 2 Nos outgoing SF6 filled load break switches with integrated relays and related CTs as specified below, cable switch module and an interlocking mechanism with the earthing switch complete all as specified and directed. Degree of protection shall be as per manufacturer's specifications. (a) Fixed type voltage indicators and electronic short circuit indicators for simple fault indication (b) Resin cast CT with ratio 75/1-1 with 15VA burden class1 for metering and class 5 P10 for protection-Set of three (c) Resin cast potential transformers with ratio 11KV/1.732, 110V/1.732, 200 VA class1 with HT fuses mounted on with drawable rack (d)Self powered microprocessor controlled numeric relay comprising of three over current , one earth fault protection relay with high set for both phase & earth and with fault memory, universal auxliary supply Model No.IRI1- WD of C&S make / Model No MC-61A of L&T /SIEMENS/ABB/AREVA (e) Trip circuit supervision relay Model No. MRA1 of C&S make or equivalent in L&T/SIEMENS/ABB/AREVA (f) Master trip relay Model No. CLR of C&S make or equivalent in L&T/SIEMENS/ABB/AREVA (g) Power pack equipment , with back up for 15minutes including batteries complete suitable for operation of relays

M&L for transformer platform of size 2.0 x2.0 x1.2 Mtr with RR masonry in CM 1:6, 200 mm PCC 1:4:8 (using 40 mm graded aggregate) as in foundation and 100 mm thick PCC 1:2:4 (20 mm graded stone aggregate) at top of the platform, 20mm thick plastering in CM 1:6 and three coats of white wash complete all as specified and directed. Note:- foundation as per OEM recommendation.

Supply, laying & testing cable XLPE insulated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty)with stranded aluminium conductor, 11000 volts grade, of size 3 core 95 sqmm including taking down old cable complete all as specified and directed.

Supply, laying in trenches or passing through pipe/ducts, fixed to wall or poles XLPE insulated screened PVC sheathed galvanized steel strip or wire armoured electric power cable with aluminium conductor of size 400 sqmm 3.5 core suitable for earthed system including testing and commissioning and taking down of old cable complete all as specified and directed.

Supply and fix cable jointing kit for 11 KV grade cable for outdoor termination heat shrink type joint with jointing material and accessories suitable for 3 core XLPE, armoured, Al conductor cable of size 95 sqmm complete all as specified and directed.

Boring of holes under road, pavement, hard standing by manual/ trenchless technology using ultra sounding technique and necessary machine including HDPE pipe of 150 mm dia suitable for 0.4 mpa working pressure complete all as specified and directed.

Earthing complete with GI earth plate electrode of size 60cm X 60cm X 6mm buried directly in ground vertically at a depth not less than 2.25 metre below normal ground level with top edge of earth plate at a depth not less than 1.5 metre below normal ground level surrounded from all sides by 15 cm thick and packed layer of charcoal dust and common salt filling in alternate layers etc and connected to and including GI strip of size 32x6 mm up to 7.5 mtr by means of bolts, nuts, check nuts and washers made of brass and protected by light grade 40mm dia upto 7.5 mtr long GI pipe connected to main control board and GI pipe light grade 20mm bore for watering and including funnel, wire mesh, RCC pit cover 50mm thick and PCC chamber pit with PCC 1:2:4 type C2 (including excavation and earth work disposal of surplus soil to a distance not exceeding 50 metre) and testing after completion all as specified and shown on plate No 3 of SSR Part-I 2009 including taking down old unserviceable complete all as specified & directed by Engr-in-charge.

Excavation in trenches / foundation in soft / loose soil not exc. 1.5 metre wide and n'exc. 1.5 m deep for HT / LT under ground cable / pole fondation and getting out including forming bottom surface to required level or slop, complete all as specified and directed.

Returning filling of excavated soil after laying the cable with spreading leveling watering and well ramming in layers not exceeding 25cm thick in loose/soft soil complete all as specified and directed.

Removal of surplus soil/excavated material obtained from ground level to a distance not exceeding 50 metre and depositing where directed at a level not exceeding 1.5 metre above from the starting point complete all as specified and directed.

M&L for sand cushning to U/G cable in layers of 23cm thick (8 Cm before laying the cable and 15 cm thick after laying the cable) in trenches including watering and consolidation, complete all as specified and directed. Note: Only punned thickness 18 cm shall be measured and paid.

M&L for Sub class ‘B’ bricks old size laid dry flat over the cable abutting each other, length of cable equal to width of brick all as required complete all as specified and directed.

Supplying and laying un-reinforced precast concrete cable cover, class HVP, type 1 with peak, size 300mm x 180mm x 40mm complete all as speified and directed. Note: Purchase voucher and manufacturer test certificate shall be submitted by contractor while claiming payment..

M&L for construction of chain link fencing of size (4.5MtrX 3Mtr X2 Mtr) for protection of transformer complete all as specified and directed with following items :- (i) S&F Mild steel angle iron for posts and struts as in fencing post including cutting tops to shape as directed, drilling holes, notching for wire, etc, flat iron fillets (for securing wire mesh etc.) including all necessary drillings, bolting or riveting, etc and similar confirming to Fe 290 Gde E- 165 complete all as specified and directed -120KG (ii) S&F mild steel galvanised chain link fencing made of galvanised steel wire dia of wire not less than 2.50 mm of fixed to flat iron rails with RCC/angle iron post all as specified and directed :-40KG (iii) M&L for mild steel plain straining bars 10 mm dia cut to length bent to shape required including making hooks at end woven in chain link and fixed with nut and bolts Fe 410 (W)Gde Fe 410-W(Gde E-250) quality -A or Fe-290 (Gde E-165) complete all as specified and directed. :-20KG (iv) M & L for preparation of new steel or iron surfaces of any description n exc 10cm in width or girth and applying two coats of synthetic enamel paint over and including a coat of primer of zinc chrome red oxide complete as specified and directed :- 5.5 RM (v) M&L providing cement concrete 1:4:8, Type B1 (using 20mm graded stone aggregate) as in surface channels of drains complete all as specified and as directed. :- 0.5 cum (vi) M&L for preparation of new steel surfaces of any description over 10cm width or grith not otherwise described and applying two coats of synthetic enamel paint over and including a one coat of red oxide primer including writting letter or drg, signs of any size and in any colour etc complete all as specified and directed Qty :-10 Sqm