PROVN OF DEFICIENT TRANSFORMER AT AF STN KANPUR

Amount

Supply, installation, testing & commissioning of outdoor type power transformer having no load voltage ratio at rated voltage 33/11 KV , 5000 KVA oil immersed, naturally cooled 3 phase 50 Hz, veetor group DYN-11 and ON load tap changer with AVR & RTCCP +5% to 15% in step of 1.25% tap changing switch, star Delta connected internally with HV coil, copper double wound, LV side provided with 3 phase and neutral with the tempreture rise not exceeding 60 degree C by thermometer in oil and 55 degree celsius by resistance with first filling of oil as per IS grade 335 and transformer conforming to IS 2026 level 1 insulation level "class A" all as directed and specified with and including the following fitting and accessories including first fill of transformer oil necessary mounting on PCC floor mounted as per manufacturer's recommendations, specifications all as specified and directed.:-

(a). Lifting lugs, Top cover lugs & jacking pad (b) Earthing Terminals. (c) Conservator with oil gauge glass, filling hole with plug and drain plug (d) Transformer Drain valve (e) 04 Nos Bi Directional plain/flat rollers (f) Explosion vent with Diaphragm (g) Thermometer pocket (h) Air vent plug (j) First Fill silica gel Breather (k) Rating & Diagram plate, inspection cover, Terminal making plate. (l) Cooling Radiators (m) LV Neutral bushing brought out for external earthing. (n) First fill of EHV grade Transformer oil (o) Buchholz relay with contact for Alarm & trip contact. (r) Winding Temprature indicator with Alarm contact. (s) Marshaling Box.

Supply, laying & testing PVC insulated, PVC sheathed cable galvanized steel strip or wire armoured, electric control cables (Heavy duty) with stranded copper conductor of size 1.5 sqmm 4 core, 1100 volt grade complete all as specified and directed.

Supply, laying & testing PVC insulated, PVC sheathed cable galvanized steel strip or wire armoured, electric control cables (Heavy duty) with stranded copper conductor of size 1.5 sqmm 8 core, 1100 volt grade complete all as specified and directed.

Supply ,laying and testing XLPE insulated , screened, PVC bedded galvanised steel strip or wire armoured HT electric power cable heavy duty with aluminium conductor 33000 volts grade earthed cross sectional area 300 sq mm 3 core, laid in ducts complete all as specified and directed.

Supply ,laying and testing XLPE insulated , screened, PVC bedded galvanised steel strip or wire armoured HT electric power cable heavy duty with aluminium conductor 11000 volts grade earthed cross sectional area 300 sq mm 3 core, laid in ducts/wall complete all as specified and directed.

Supply and fixing cable jointing kit for HT 11 KV grade cable for outdoor termination, complete with jointing material (Heat shrink type) and accessories suitable for XLPE armoured aluminium conductor cable of size 240 to 300 Sqmm 3 core and testing after jointing complete all as specified and directed.

Supply and fixing cable jointing kit for HT 33 KV grade cable for outdoor termination, complete with jointing material (Heat shrink type) and accessories suitable for XLPE armoured aluminium conductor cable of size 300 Sqmm 3 core and testing after jointing complete all as specified and directed.

M&L for chemical earthing complete with copper plate electrode 900mm x 600mm x 5 mm thick buried directly in ground with top edge of plate not less than 4.5mtr deep below the normal ground level connected to copper strip 32 x 6mm thick copper strip as main earthing lead and connected and tinted copper bolt, nuts, check nuts ad washers besides brazing at all joints all as directed and connected to earth test point all as specified and directed with and including necessary excavation and earth work, returning filing, removal of extra soil etc, filing adequate quantity of charcoal dust, common salt and MgSO4 upto top of plate, PCC (1:3:6) type C-1 using 20mm graded stone aggregate for earth pit chamber with 40mm x 40mm x6 mm mild steel angle iron frame for cover, pre-cast 50 mm thick RCC cover in (1:2:4) type B-1 using 20 mm graded stone aggregate , reinforcement with 8mm TMT bar @ 75 mm c/c on both way , funnel with wire mesh and 50mm dia galvanised iron pipe light grade for earth lead protection and 40 mm dia galvanised iron medium grade for watering and 7.5 mtr copper strip including testing on completion complete all as specified and as directed. Note :- (i) Copper earth strip beyond 7.5 mtr shall be measured separately. (ii) On testing after completion if desired earth resistance less than 1 Ohm is not obtained, the earthing will be redone at no extra cost.

S&F Copper earth strip 32 x 6 mm thick for extension of earth and connected to transformer/equipment or panel with proper clamp,saddle,nuts,bolts and washers etc properly complete all as specified and as directed .

Supply & install PCVCB outdoor type three phase 33 KV 1250 amps 50 Hz 26.3 kA having standard IEC 62271-100 with higher system voltage 36 kV, basis insulation level 70/17-0 kVp minimum creepage 900 mm with controlling voltage 230 VDC spring charge motor 230 VAC, enclosure fabrication material Mild steel 3 mm thick all as specified and directed.

Supply, install, testing and commissioning of 11 KV, 3ph, 50Hz, indoor type, totally enclosed metal clad switch gear, floor mounted, complete with Vacuum circuit breaker having rupturing capacity 350 MVA, insulation level-12KV/28KV/75KVP, SC rating-18.4 KA for 1 Sec. IEC Ref-62271-200 or latest updated, overload and earth fault protection, ampmeter, voltmeter and of current rating not less than 800 Amps including necessary connection with existing cables including following details specification all as specified and directed.:- (i) (a)Digital numerical relays for earth fault, over current protection and models as directed by OEM . (b)high speed trip relays. (c )Closing coil, trip coils of 110V, DC (d) VCB will be horizontal break and horizontal draw out type. (e) VCB panel shall be suitable for local/remote control. (f) The panel will be provided with LED indicators as specified by OEM (g) CT/PT shall be cast resin dry type. (h) CT ratio for 200/100/5-5A and current rating 18.4 KA for use of metering and protection, minimum 15 VA burden. (i) Spring charging motor 0f 230V, AC (j) Auxiliary relay for transformer protection haaving buchholz alarm, Oil Temp alarm & Wdg Temp alram for Transformer feeder only (k) Relay setting after commissioning of VCB according to load/fault condition with secondary injection. (l) Provn of space heater and thermostat for heating (ii) Rate shall include for necessary addition/alteration/electrical connection if required for fixing of VCB.

Supply, installation, testing and commissioning of oil cooled, out door type 33 KV current transformer having ratio of 300-150/5+5+1 A having protection core class 5P10, burden of 15 VA and metering core class 1.0 and burden of 15 VA breaking cap of 13.1 KV for 1.0 second complete all as specified and directed.

Supply, installation, testing and commissioning 33 KV single phase out door oil cooled PT of ratio 33KV/ √3 / 110 V/√3 class 0.5 - 3 . Burden 200 VA. Insulation class 70/170 KV , voltage factor 1.2 cont and 1.9 for 30 sec , confirming to IS : 3156 complete all as specified and as directed. .

Leo Air and Power Solution pvt Ltd. (BID ID -3153732)

M.S CONSTRUCTIONS (BID ID -3159479)

KB PROJECTS (BID ID -3152404)

RAVINDRA BROTHERS (BID ID -3161412)