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download between 0-24 hoursReleased: 2025-01-31
IEC 60156:2025
Insulating liquids - Determination of the breakdown voltage at power frequency - Test method
Isolants liquides - Détermination de la tension de claquage à fréquence industrielle - Méthode d’essai
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| Standard number: | IEC 60156:2025 |
| Released: | 2025-01-31 |
| Language: | English/French - Bilingual |
DESCRIPTION
IEC 60156:2025
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.