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IEC 60156 ED4

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

General information

50.60     2 gush 2024

IEC

TC 10

International Standard

29.040  

Scope

IEC 60156 ED4:2024 (EN) 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.

Life cycle

PREVIOUSLY

PUBLISHED
IEC 60156:2018 ED3

NOW

IN_DEVELOPMENT
IEC 60156 ED4
50.60 Close of voting. Proof returned by secretariat
2 gush 2024