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Reviewing Modes of Insulator Failure

There are three proven insulator technologies being deployed in delivery of electrical power throughout the world. Porcelain and glass insulators have been used since the start and have had a solid record of performance and reliability. In fact, the success... Read More

Standards & Progress in Insulator Technology

Standards have great impact on any industry since quality of standards determines quality and stability of products and ultimately customer confidence in these products. As such, it is fair to state: “no standard – no business”. IEC TC 36, the Standards... Read More

Applying Composite Line Insulators Under Natural Pollution

Failures of transmission line insulators due to natural pollution are often associated with changes in service environment or with incorrect parameters when specifying insulation during project design. Such outages normally occur when water on an insulator... Read More

Assessing EHV & UHV Station Post Insulators

Developments in station post insulator technologies can help minimize arcing distances needed at busbars, disconnectors and similar apparatus and therefore contribute to more flexible substation design. In general, station posts can be optimized by using... Read More

Insulator Failures from Improper Selection

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

Key Issues for Future of Composite Insulators: View from China

Application of silicone rubber composite insulators has increased significantly over the past 30 years and among the essential factors behind continued growth is the confidence shown in them by power utilities. This edited article, contributed to INMR by... Read More

Insulator Dimensioning for AC to DC Line Conversion

Increasing market integration between countries and introduction of renewable energy sources on a larger scale has resulted in a growing demand for enhanced capacity in transmission systems. As a consequence, several utilities in Europe and elsewhere have... Read More