Service experience with epoxy resin for both insulation and construction material and its application in a future design of insulation enclosed switchgear

The authors show that epoxy resin is an excellent insulation material which leads, provided it is properly designed, to safe and reliable switchgear. They then describe the use of epoxy resin as an insulation and construction medium, in a new design of substation switchgear for 12 and 24 kV. A brief description is given of the overall design of the new installation. Special attention is then paid to the characteristics of the insulation material, such as dielectric and mechanical requirements, temperature management and appropriate tests. Finally, the area of application of the relevant switchgear is specified