Abstract
ECONOMICAL considerations are leading electrical engineers to use very high voltages fortransmitting electrical energy over long distances. The accessories used with high-voltage cables or overhead lines require to be specially tested. This has made it necessary to build high-voltage laboratories and to design insulating devices which will withstand these high pressures. Inthe early days of testing, the perfection of a testing set was judged mainly by the length and appearance of the spark and the loudness of the noise it made. Nowadays these measurements have to be made with high accuracy in accordance with stringent specifications. On the result of the acceptance tests, errors of a few per cent may turn the scale for rejection, leading to losses of thousands of pounds to the manufacturer. In certain cases discrepancies of ten per cent are shown in the results obtained in different laboratories, leading to considerable dissatisfaction.
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High-Voltage Testing Equipment. Nature 133, 491 (1934). https://doi.org/10.1038/133491c0
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DOI: https://doi.org/10.1038/133491c0