prBAS EN IEC 60156:2026

Insulating liquids - Determination of the breakdown voltage at power frequency - Test method


General information
Status:Project
Number of pages:37
Adoption method:Proglašavanje
Language:engleski
Edition:1.
Realization date:27.11.2025
Forseen date for next stage code:08.12.2025
Technical committee:BAS/TC 53, Fluids and fluids systems
ICS:
29.040, Insulating fluids

Abstract
IEC 60156:2025 specifies the method for determining the dielectric breakdown voltage of insulating liquids at power frequency. The test procedure is performed in a specified apparatus, where the oil sample is subjected to an increasing AC electrical field until breakdown occurs. The method applies to all types of insulating liquids of nominal viscosity up to 350 mm2/s at 40 °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.

Lifecycle
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Original document and degree of correspondence
EN IEC 60156:2025, identical
IEC 60156:2025, identical


Work material

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