Abstract
A PAPER on this subject was read before the Institution of Electrical Engineers in London on February 9 by B. L. Metcalf. In the South Wales coalfield, where approximately 16 per cent of the total output of Great Britain is raised, the transmission and distribution of electricity introduces special problems owing to the hilly nature of the country. To give some idea of the potential demand at collieries to be obtained, the load for a typical group of collieries is analysed. Some notes are included on the choice of switchgear for collieries and on the influence on this choice of the proposed amendments to the Regulations for the Use of Electricity in Mines. Information is given regarding the damage to transmission towers during the ice storm of 1940, and a proposal is made to amend the regulations of the Electricity Commissioners governing ice-loading for conductors. A new design of cross-arm for a single-circuit 33-kV. overhead line is illustrated. Recommendations are made for the standardization of equipment required for the electrification of collieries.
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Transmission and Distribution of Electricity in Mines. Nature 153, 219 (1944). https://doi.org/10.1038/153219c0
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DOI: https://doi.org/10.1038/153219c0