The significance of oxygen permeability in electrical insulation systems

In this paper, we will confine our attention to a new method for the testing of slot cell sheet stock insulation components. However, the test procedures may be eventually extended to evaluating other forms of insulation materials. The purpose of this paper is to describe a program of study of oxygen diffusion and oxygen permeability in sheet stock insulation materials. The technique of investigation is new and unproven, and the authors may make errors in interpretation. However, if other investigators will be stimulated to use and improve this technique of study and evaluation, this exposition of testing procedures will have served its purpose.