28/EE(M-33kV)/Elect./2025-26

Providing conductive concrete earth grid of 2 Nos. interconnected earth electrodes with installation & Testing connection including connection with application-Normal Soil earthing to deliver earth results not exceeding 2 Ohms for sub station equipment i.e HT Panel Board. SPECIFICATIONS a) Earth Electrodes :- Metal Electrode Cu-Bonded MS road Size : Dia 60mm (+-0.5mm), Length - 3 Mtrs with enhanced conductive concrete embedding size dia :100mm Length 3 Mtr. of each earth electrode b) Interconnecting strip :-All the 2 Electrodes of the grid will be horizontally inter-connected with metal conductor : Cu Bonded MS Flat size 50mm X 6mm & enhanced conductive concrete embedding size 75sqmm buried at 600mm below the ground level c) Test Links :- Test Links Cu-Bonded MS Flat of size : 50mm X 6mm shall be provided , one no. at any of the two electrodes for the grid for the connection between earth grid pit and the application d) Pit Covers :- RCC Pit Cover frame at size 300mm X 300mm shall be provided at two earth electrodes

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