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Full Description

Gives a method for determining the relative thermal endurance of electrical insulating varnishes by means of coating on glass cloth and measuring electric strength before and after heat ageing for establishing temperature indices to assist in determining suitability of electrical insulating varnishes for use in electrical systems.
 

Document History

  1. IEC 60370 Ed. 2.0 b:2017


    Test procedure for thermal endurance of insulating resins and varnishes for impregnation purposes - Electric breakdown methods

    • Most Recent
  2. IEC 60370 Ed. 1.0 b:1971

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    Test procedure for thermal endurance of insulating varnishes - Electric strength method

    • Historical Version