INMR - Enriching Technical Knowledge of T&D Professionals

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Coating Porcelain Line Insulators to Prevent Pollution Flashover

Taking down and coating existing porcelain long rod insulators with RTV silicone was deemed more cost effective than the alternative of a wholesale change in insulator technology. Read More >

Thermal Inspections Help Prioritize Maintenance

Infrared and ultraviolet imaging have been used for decades and rely on specialized cameras that have evolved towards greater portability, improved data sharing and more ease in assessing the severity of whatever problems are identified. Read More >

Commissioning Testing HV Power Cables

Increasing Resilience of Underground Distribution Lines Against Heat Waves (Video)

On-Line Condition Monitoring & Field Testing of Surge Arresters

Interchangeability of Traditional MV Porcelain Bushings with Composite Polymeric Types (Video)

Visualizing Defects in HV Components

in Corona, Insulators

Ultraviolet discharges and thermal hotspot activity are indicators of defects on high voltage components and being able to efficiently visualize their source has long been a goal of power engineers. Read More >
Compact Design Allowed Upgrade Under Severe Restrictions

in Utility Practice & Experience

What do you do when right-of-way restrictions make upgrading an existing 125 kV transmission line to 400 kV impossible using traditional design? That was the challenge facing engineers at a Swiss power supplier. Read More >
Comparative Testing of Helical & Concentric Shed Profiles on HV Bushings (Video)

in Bushings

Full-scale comparative testing was performed on commercially available transformer bushings during heavy rain after complete loss of hydrophobicity. Read More >
Testing for Safety & Other Risks of HV Cable Terminations, Bushings & Arresters

in Arresters, Bushings, Cables & Accessories, HV/HP Testing

Catastrophic failure of an oil-insulated HV cable termination can launch porcelain shards at high velocity in all directions. Read More >
Testing to Reduce Transformer Failure Risk

in From the World of Testing

Failure of a large power transformer can be a nightmare due to the enormous repercussions. Read More >
A los aisladores les pueden pasar cosas malas

in Aisladores, INMR Español

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Beneficios que justifican el mayor uso de pararrayos en las líneas de transmisión

in INMR Español, Pararrayos

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Best Practice in Lightning Protection for Distribution Systems

in Arresters, Woodworth on Arresters

As demand for reliable power continues to grow worldwide, improving the lightning reliability of distribution systems becomes more and more common. Read More >
Understanding Energy Rating of Distribution Arresters

in Arresters, Editorial Columns, Woodworth on Arresters

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About us

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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