Supply and installation of spike type copper lightening arrestor with required earth pits at different 6.6KV 440V substation under Township of Rajrappa Area

Amount

Erection of metallic pole of following length in cement concrete 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size) foundation including excavation and refilling etc. as required.

Above 11.0 metre and upto 13.0 metre

Providing and fixing 25mm x 5 mm GI strip on surface or in recess for connection etc as required

Jointing copper / G.I. tape (with another copper/ G I tape, base of the finial or any other metallic object) by riveting / nut bolting/ sweating and soldering etc as required.

Supply and erection of approved make safe earthing electrode consisting pipe-in?pipe technology as per IS 3043-1987 made of corrosion free G.I. pipes with constant ohmic value surrounded by highly conductive compound with high charge dissipation suitable for effective and maintenance free earthing in earth pit of minimum bore dia. 150mm size,With 3 metre G.I. pipes having outer pipe dia of 50mm having 80-200 micron galvanizing, Inner pipe dia. of 25mm having 200-250 Micron galvanizing, connection terminal dia. of 12mm in nominal soil with 50 kg (two bag) back filling bentonite compound UL listed and confirm to relevant international/ Indian standards around electrode upto ground level.

Supply of 5 spike Copper lightening arrestor complete set ,Dimension of ball 50 mm round ,rod dia-25mm ,length 50 cm ,size of base plate 150mmx150mmx6mm

Providing masonry enclosure with cover plate having locking arrangement etc as required .

Total impact of GST for the purpose of CTC

M/s. Balajee Construction

M/S SHREE BALAJEE ENG.CO.