Insulating liquids – Test methods for the determination of interfacial tension of insulating liquids – Determination with the ring method

Published by	Publication Date	Number of Pages
IEC	09/20/2018	41

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Category: IEC

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IEC 62961 Ed. 1.0 b – Insulating liquids – Test methods for the determination of interfacial tension of insulating liquids – Determination with the ring method

IEC 62961:2018 establishes the measurement of the interfacial tension between insulating liquid and water by means of the Du No°y ring method close to equilibrium conditions. In order to obtain a value that provides a realistic expression of the real interfacial tension, a measurement after a surface age of approximately 180 s is recorded.