Earthgrid Design


A new earth grid or modifications to existing earth grids were designed using computer modelling for several 33 / 11 kV zone substations and industrial 11 / 0.4 kV transformers. Installation specifications and designs were completed to ensure step and touch potentials comply with industry and international standards. The detailed design included analysis of soil electrical resistivity test results, computer modelling, earth grid layout design, equipment earth connections design and earthing conductor specification.