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The paper discusses the mechanical load limitations to dielectric material damage of high voltage suspension type insulators. For ceramic insulators, discussed are the design aspects of cap-and-pin insulators that play a role in the limits of time-load and thermal mechanical loads to prevent damage to the dielectric material. Brittle fracture, weathershed seals, interfaces between dielectric materials, and temperature, are discussed in terms of limiting the mechanical loads of non-ceramic insulators in order to prevent dielectric material damage.
Date of Conference: 7-10 May 2012