Specifies the method for determining the dielectric breakdown voltage of insulating liquids at power frequency. The test portion, contained in a specified apparatus, is subjected to an inreasing a.c. electrical field by means of a constant rate of voltag
IEC 60156:1995 history
0000 IEC 60156:2018 RLV
1995IEC 60156:1995 Insulating liquids - Determination of the breakdown voltage at power frequency - Test method
1970IEC 60156:1963 Method for the determination of the electric strength of insulating oils