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Commentary by Pigini

PPC Insulators

Polymeric Materials for HV Insulators

It may surprise some but polymeric type insulators have been applied on high voltage lines and at substations since as far back as 1960. The best measure of their success in delivering real benefits versus traditional ceramic technologies is that they now... Read More

Passing of Two Leaders in Development of Insulation Coordination

This past year, the world’s high voltage community lost two exceptional individuals who, apart from their unique skills, were also unusually charming gentlemen: Lorenzo Thione and Karl Heinz Weck. Among numerous other activities in the industry, Dr. Thione... Read More

Insulators & Meteorology

Insulators & Meteorology

Over the past 24 years of INMR’s existence there have been several tendencies when it comes to R&D for electrical power systems. A first phase, during the 1990s, focused on product innovation and examples are composite insulators and zinc oxide... Read More

End of Life of Electrical Components: Recycling vs. Disposal

End of Life of Electrical Components: Recycling vs. Disposal

The focus when it comes to electrical products and components has traditionally been on quality and performance in service. Increasing public awareness of environmental issues, however, has now led both manufacturers and users to pay much greater attention to... Read More

Reliability of Cap & Pin Insulators

In his landmark (but now hard to find) book Insulators for High Voltages, J.S.T Looms offered the following insight: “The purchase price of insulators, especially those of glass or porcelain, is totally dominated by market forces and bears no relation... Read More

Pre-Coating RTV Silicone onto Glass Cap & Pin Insulators

Pre-Coating RTV Silicone onto Glass Cap & Pin Insulators

Traditionally, application of RTV silicone material has been a remedial measure to mitigate pollution-related flashovers of porcelain substation insulators suffering poor service performance. Indeed, coatings have been viewed mainly as a maintenance product... Read More

Most Insulator Failures Result from Improper Selection

Most Insulator Failures Result from Improper Selection

At a past CIGRE meeting and in particular during the realted Study Committee B2 session on Overhead Lines, there was discussion on the still debated issue of the ‘state-of-the-art’ of composite insulator technology. A spectrum of contradictory case... Read More