IEC 60156 Insulating Liquids - Determination of the Breakdown Voltage at Power Frequency - Test Method
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IEC 60156 Document Information:
Title
Insulating Liquids - Determination of the Breakdown Voltage at Power Frequency - Test Method
Isolants liquides - Determination de la tension de claquage a frequence industrielle - Methode d'essai
International Electrotechnical Commission
Publication Date:
Jul 1, 1995
Scope:
This International Standard specifies the method for determining the dielectric breakdown voltage of insulating liquids at power frequency. The test portion, contained in a specified apparatus, is subjected to an increasing a.c. electrical field by means of a constant rate of voltage rise until breakdown occurs.
The method applies to all types of insulating liquids of nominal viscosity up to 350 mm2s-1 at 40 degrees C. It is appropriate both for acceptance testing on unused liquids at the time of their delivery and for establishing the condition of samples taken in monitoring and maintenance of equipment.
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