Protecting Composite Insulators from Corona

One of the important design differences between composite insulators and porcelain or glass cap & pin types is smaller shank diameter, made possible by the high strength glass-fibre reinforced core rod. However, slimmer profile also means smaller metal end fittings and the issue of corona has to be addressed, even at lower voltage levels. Read More >

UV Versus IR Inspection of Overhead Lines & Substations

Maintenance of overhead lines and substations requires understanding what is being revealed during ultraviolet and infrared inspections of equipment and hardware. Do the two technologies highlight the same problem or are they rather complementary, each revealing a different aspect of that problem? Moreover, is it correct to assume that each different type of defect carries a unique ‘signature’ and therefore requires its own specific inspection technology? Read More >

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