For preventive maintenance and repairing of 11KV and 3.3KV production overhead line during monsoon of Balkudra outsource under Bhurkunda Colliery.

Erection of all aluminium conductor of 7/1.96 mm to 7/3.10 mm diameter including binding etc. as required. 25 spanX3 wireX50 Mtrs. X 0.394 Kg/Mtrs= 1477.50 KG say 1478 KG

Supplying and erection of galvanised stay set for 11 KV over head lines complete with 19/ 20 mm dia X 1.8 metres long stay rod, anchor plate of size 45 cm X 45 cm X 7.5 mm thick, thimble, stay clamps, turn buckle ( 20 mm X 600 mm ), 7/ 4.00 mm dia G.I. stay wire and 11 KV strain insulator etc 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.

Supplying and erection of 11 KV disc insulator for 11 KV over head lines with galvanised insulator fittings, ball and socket type and complete with galvanised strain clamps, bolts, nuts, washers etc. as required.

Supplying and erection of 11 KV pin insulator complete with large steel head G.I. pin, nuts, washers etc. as required.

With 3 mtrs GI pipes having outer pipe dia of 50mm having 80-200 micron galvanising inner pipe dia of 25mm having 200-259 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 standard around electrode upto ground level.

Providing and fixing 25 mm X 5 mm G.I. strip on surface or in recess for connections etc. as required.

Fixing of lightning conductor finial (single prong) with base plate including holes etc. complete 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.

Supplying of 8 SWG GI wire for 30 Span earthing and 20 Span cradling

Erectiom of GI wire No. 8 SWG including binding etc as required 30 Span