Dr. Johansson studied in Sweden and completed his PhD in the area of thermodynamics. He has has had a long career in areas that include silicon nitride ceramics and porcelain electrical insulators, joining Ceram/PPC Insulators in the 1990s as Group Head, Responsible for Ceramic Technology, before being appointed Chief Technical Officer. He has also served as Chief Operating Officer at WS Industries in India. Presently, he is an international consultant assisting insulator manufacturers in such areas as technical and economic improvement in production.
The different properties of porcelain, composite and glass materials have caused each technology to have specific market niches related to type of application, service environment and boundary conditions. Porcelain still dominates the HV insulator marketplace in general but this position is being increasingly challenged. This places growing pressure for continued improvements in both performance and cost. Based on investigating porcelain insulator production plants over 30 years, this presentation identifies trends and proposes areas where technical as well as economic improvements still remain possible.