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| 1 | Supply , installation , testing and commissioning of isolation tranfromer ,3 phase, 50 HZ , 400 KVA Indoor type , copper wound , oil cooled , class of insulation A , metallic body powder coated designed for input voltage range 415 volt, + - 5% and output voltage rangr 415V , + - 5% , with ratio of 1:1 vector grouph Dyn11, delta - star with first filling of tranformer oil of requist dielectric strength up to level , efficiency moire than 95% seprate neutral bushing shall be brought out for earthing. potential diffrence between neutral to earth less than 1 volt with all standards fittings like digital tempreture meter, lifting hooks one set, earthing terminals 2 nos.with OEM product code VNITTO-400415 with overload and short ckt protection all as specified and directed by eng-in -charge |
| 2 | Supply, installation, tyesting and commissioning of Servo voltage stabilizer 400 KVA forautomatic operation 3-phase, 50 Hz , Naturally oil cooled, indoor, unbalanced type, copperwound, digital display type, relay free smooth and silent operation with 1 filling of transformer oil(IS 335: 2018 ) having following specification.Specification(a). Input voltage 300V-480V(b). Out put Voltage 415V + 1% (adjustable )(c ) Rated frequency 50 Hz (No distortion in wave form(d) response time not to exceed 10 mile seconds(e) Sensitivity (+) 1%(f) Rate of correction more then 6 volts/second for per phase(g) Class of insulation- A(h) No load losses less then 0.5% & Full load losses less than 2.5%(j) Efficiency more than 95%.Protections:-(a). Over load/short circuit protection(b). High/ Low voltage cut off(c ) By pass arrangement in case of emergency(d) Single phase sequence change protection |
| 3 | Supply & fix end termination of LT 1.1 kV grade XLPE Aluminium cable 3.5C × 300 sqmm using heat shrinkable termination kit complete with aluminium crimping lugs, ferrules, sealing compound, heat shrink tubes, glands and all accessories suitable for connection to transformer LT bushings and LT panel busbar, complete in all as specified and directed by eng-in-charge. |
| 4 | supply,laying,testing and jointing of cable XLPE Insulated, screened, PVC bedded, galvanised steel strip or wire armoured, electric power cables (heavyduty) with aluminium conductor, 1100 volts Earthed, grade of size 300 sqmm 3.5 core complete all as specified and as directed. |
| 5 | Material and labour for Earthing in any type of soil complete with galvanisedsteel earth plate electrode 60×60cm.× 6mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level,earth plate surrounded by 15 cm thick and packed layer of charcol,dust and common salt earth lead GI strip 32x6 mm by mean of bolts, nits, check-nuts and washers of GI and thimbles and of earth wore protected by GI pipe light grade 40mm bore and water pipe 20mm bore GI medium grade with finnel and wiore mesh complete 1:3:6 type C -1 using 20mm grade stone aggregate in lieu of CI cover and frame etc all as specified and shown in electrical plate No. 3 connected to earthing tes point all as specified and directed . |
| 6 | Material and labour for Earthing in any type of soil complete with galvanisedsteel earth plate electrode 60×60cm.× 6mm thick, buried directly in ground (earth pit not less than 2.25 metres deep below ground level) with top edge of the plate not less'than 1.5 metres below normal ground level,earth plate surrounded by 15 cm thick and packed layer of charcol,dust and common salt earth lead GI strip 25x4 mm by mean of bolts, nits, check-nuts and washers of GI and thimbles and of earth wore protected by GI pipe light grade 40mm bore and water pipe 20mm bore GI medium grade with finnel and wiore mesh complete 1:3:6 type C -1 using 20mm grade stone aggregate in lieu of CI cover and frame etc all as specified and shown in electrical plate No. 3 connected to earthing tes point all as specified and directed . |
| 7 | supply and fi GI Strip 32x6 mm burried in ground / laid on floor / fixed to wll on saddled / on porcelain insulator with complete strip cover etc as directed |
| 8 | supply and fi GI Strip 25x4 mm burried in ground / laid on floor / fixed to wll on saddled / on porcelain insulator with complete strip cover etc as directed |
| 9 | Supply, fabrication, installation, testing & commissioning of Heavy Duty LT MCCB Control Panel suitable for 400 kVA, 415V, 3 Phase, 50 Hz isolation Transformer, continuous industrial duty, short circuit withstand 50 kA for 1 sec, complete with 630A, 4P MCCB (50/65 kA breaking capacity, adjustable T&M / Microprocessor trip), door interlocked rotary handle;3.12mm sheet panel powder coated 800A overrated electrolytic grade tinned copper RYB + 100% Neutral busbar with heat shrink insulation; full size copper earth busbar; multifunction digital meter (V, A, kW, kVA, PF, Hz, kWh) with LED phase indication lamps; control MCB; Type-2 SPD; CRCA floor mounted enclosure (2.5 mm base, 2.0 mm structure, 1.6 mm doors), powder coated, IP-55, Form-3b separation; bottom cable entry with removable gland plate suitable for 400 sqmm 3.5C cable 2 run double compression glands; FRLS copper internal wiring with ferruling; double earthing studs; complete with all accessories, hardware, labeling and conforming to IEC 61439 / IS 8623, IS 60947 & IS 3043, complete in all specified and directed by eng-in-charge. Please Enable Macros to View BoQ information |
