For repairing and maintenance of 12 nos. GOAB Switch 3.3KV /11KV and New installation of 2. nos GOAB switch and 4Nos Lightning arrestor 3.3/11KV with earth pit 4nos and at near different transformers under G M unit Kathara Area

Part ( A ) Providing and fixing of GOAB switch complete set and Lightning arrestor etc. Earthing with copper earth plate 600 mm X 600 mm X 3 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.

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

Supplying and erection of three piece nonlinear resistor type lightning arrestor suitable for 3 wire, 11 KV overhead lines with rated voltage 9 KV (rms) with a nominal discharge current rating of 5 KA and complete with galvanised clamping arrangement, G.I. bolts, nuts, washers etc. as required.

Providing of super enamel copper wire 4 sqmm (6x3x x2 m) =36 mtr for AB Switch to Horn gap

Supplying of two lengths of channel iron 75 mm X 40 mm X 6 mm (7.14 kg per metre) double pole cross arm for three wire 11KV over head line conductors complete with through bolts and nuts for clamping to the poles, 50 mm X6 mm M.S. flats welded on one side to the channel iron and with bolts and nuts on the other side for tying the cross arms together, including drilling holes for insulator pins/ fittings, bolts, nuts and washers etc (as per drawing) and painting with primer and finish paint as required.

Erection of double pole 3 wire cross arm for 11KV/ 22KV/ 33 KV over head lines as required.

Providing of GOAB switch 800 AMP Heavy duty (Horizontal type) 3.3/11 KV O/H line

Providing of horn gap fuse unit set with insulator 3.3/11 KV grade

Labour charge for above items no 1.07 and 1.08

Part ( B )Repair/Maintence of GOAB switch for ( 12 Nos ) Providing of copper connector 3.3 KV/800 Amps GOAB switch