Designing & Testing Solid-Core Bushings for Long Service Life

Bushings are devices enabling one or several conductors to pass safely through an earthed partition such as a wall or tank, in most cases that of a HV power transformer. Although not the costliest component of a transformer, bushings nonetheless have an important influence on its service reliability. Read More >

Stress Corrosion Cracking & Brittle Fracture of 400 kV Insulator in Humid Environment

Composite insulators are inherently vulnerable to certain types of failure, the most prominent being brittle fracture. These failures have been researched for years and studies established that nitric acid was the principal corrosive medium that formed on composite insulators as a result of corona discharge activity. Read More >


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INMR offers expert independent technical content for T&D engineers and professionals. Special emphasis is on design, operation and maintenance of overhead lines, substations and power cable networks as well as on testing and certification of key components such as insulators, surge arresters, bushings, power cables and cable accessories, and more.

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