NF C26-230:1970 Methods of testing insulating materials. Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating material at power, audio and radio freq.
1970NF C26-230:1970 Methods of testing insulating materials. Recommended methods for the determination of the permittivity and dielectric dissipation factor of electrical insulating material at power, audio and radio freq.