CWE/HILLS/RKT/65 OF 2023-2024 SPECIAL REPAIR TO 11 KV (HT) SWITCH GEAR SYSTEM AT MRS RANIKHET AND ALMORA UNDER GE RANIKHET

Amount

Taking down old unserviceable OCBs from site and transporting to MES store or any other location within the station as specified by Engineer-in-charge including disconnecting and removing all electric cable connections complete all as specified and directed.

M&L for cable jointing kit for 11 KV (Earthed) grade cable for indoor termination cold shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 120 to 400 sqmm complete all as specified and directed.

M&L for earthing complete with galvanised steel, earth plate electrode 600x600x6mm thick buried directly in ground (earth pit not less than 4.5mtr below ground level) with top edge of the plate not less than 3.75 mtr below normal ground level connected to galvanised earth strip as earthing lead (32mmx6mm) by means of bolts, nuts, check nuts and washer of galvanised iron/steel connected to main switch board/main DBs/earthing test point including all necessary excavation and earth work in hard/dense soil common salt and charcoal dust mixed and packed 150mm thick all round the GI earth plate wetering pipe 20mm dia GI medium grade GI sheet 0.63mm thick funnel , wire gauge, 50mm thick RCC cover in PCC 1:2:4 type B1 duly reinforced with MS round bars 6mm dia @ 150 c/c both ways and pit/chamber in PCC 1:3:6 type C1 with suitable lifting handle to cover, GI protection pipe 40mm dia light grade upto 7.5 mtr from electrode and engraving of earth marking on near by structure/painting of earth results etc, complete all as specified and indicated on electrical plate No-1 SSR Part-I 2009 and as directed including testing on completion. Note :- (i) Earth lead beyond 7.5 mtr from electrode to earth terminal point/main switch & GI pipe light grade 15mm dia for protection against mechanical damage to lead shall be measured separately. (ii) On testing after completion if desired earth resistance is not obtained, the earthing will be redone at no extra cost.

Ditto as per item no 6 above, but using copper plate 60cm×60cm×3.15mm thick electrode and 20×3mm copper strip as earthing lead complete all as specified and directed.

shahji contractors

Amit Engineering

kumaon and hills strument engnering services

Roy and Sons Infrastructers

Perfect Electricals and Engineers

RAVINDRA BROTHERS

M/S NAYAL ELECTRICALS

AJA BUILDERS