Some development in insulating materials and processes in Great Britain with special reference to thermal consideration

This paper is intended to show the lines along which the manufacturers of electrical apparatus in Great Britain are dealing with their insulation problems. Particulars are given of the facilities that have been established for insulation research, and the more important developments in insulating materials and processes employed in the various classes of electrical apparatus are discussed with special reference to thermal characteristics and consideration. The opinions of British electrical engineers upon certain aspects of temperature rating of machinery as affected by insulation are considered.