Name of Work: Retrofitting of LT Air Circuit Breaker & MCCB at Uttrakhand Sub-Station in JNU
Sl. No.
Item Description
1
Retrofitting of 440V LT Panel at UttrakhandSub-station complete with modification ofexisting panel, bus bar, shrouding, sleeve, Replacement of rusted nut-bolts, washers & defective/broken insulating supports including dismentling of existing ACB/fuse units from the existing place with cradle, termination of Phase & Neutral bus bar & cable along with hardware/support/control wiring and other connections etc. with providing & fixing following switchgears and accessories on the existing LT Panel including control wiring, reconnecting all LT cable with glands & thimbles, spray painting, sign writingcomplete with high pot testing, commissioning etc as required. (a) Microprocessor based 1600 Amp. 3 Pole , 50kA EDO Air Circuit Breaker withUnder Voltage Protection Release -415V AC, shunt release-24 DC, closing coil-220V AC, Motor-240V AC TNC, Digital Voltmenter & Digital Amperemeter with CTs of suitable rating, RYB indication, on/off indication: 03 Set(b)400 Amp 3 pole 50 kA Thermal Magnetic release MCCB : 12 Nos.(c)630 Amp 3 pole 50 kA Thermal Magnetic release MCCB : 02 Nos.(d)250 Amp 3 pole 50 kA Thermal Magnetic release MCCB : 10 Nos.(e)Spreader Link of capacity 400 Amp : 12 Nos. (f)Spreader Link of capacity 630 Amp: 02 Nos.(g)Spreader Link of capacity 250 Amp : 10 Nos.(h) Feeder Panel Door: 40 Nos.(i) Alluminium Bus bar/Sleeves/Hard ware/Supports etc. for ACB/MCCB : 01 Lot
2
Earthing with G.I. earth plate 600 mm X 600 mm X 6 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 metre long etc. with charcoal/ coke and salt as required.
3
Providing and fixing 25 mm X 5 mm G.I. strip on surface or in recess for connections etc. as required.
4
Excavation of the cable trenches in hard rock not exceeding 1.5 metres in width, and lift upto 1.5 metres, including getting out the excavated soil and disposal of excavated soil as directed within a lead of 50 metres
5
Painting with synthetic enamel paint of approved brand and manufacture to give an even shade :Two or more coats on new work
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Two or more coats on new work
7
Buy back for the 03 Nos. 1600 Amp M-PACT English Electricold LT Breakers and 22 Nos. Fuse units.
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