High-Tension Insulator Porcelain

Porcelain used in the manufacture of high-tensioin insulators must meet certain requirements as to mechanical strength, ability to resist, sudden changes of temperature, porosity, homogeneitv and temperature, coefficient of resistivity. A further suggestion as to the influences of the Piezo electric effect and the deterioration of seemingly perfect porcelain is presented with a brief discussion of the degree of progress made in the art to date.