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IEC 60156:2025 ED4

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

Jan 31, 2025

General information

60.60     Jan 31, 2025

IEC

TC 10

International Standard

29.040  

English  

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
IEC 60156:2018 ED3

NOW

PUBLISHED
IEC 60156:2025 ED4
60.60 Standard published
Jan 31, 2025

National adoptions

dnaSRPS EN IEC 60156:2025  
ISS

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

50.60   Close of voting. Proof returned by secretariat

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