Featured Content

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  Self-Cleaning Properties of Super-Hydrophobic Silicone for High Voltage Insulators

  in Insulators

  High temperature vulcanized silicone high voltage insulators are known for exceptional hydrophobic properties such that water droplets stand separately over the surface and do not form a continuous film. Read More >

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  Lessons from 25 Years Testing Polymeric Insulators

  in HV/HP Testing, Insulators

  Before installation on overhead lines, the quality of polymeric insulators must be approved through design and type testing. Read More >

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  Protective Devices Installed to Reduce Wildlife Outages at Distribution Substation

  in Maintenance, Wildlife Protection

  Among the most vulnerable links in a power network are points of interaction between live equipment and wildlife such as birds and scavenging carnivores. Read More >

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  Reconditioning, Recycling & Disposal of Insulators

  in Insulators

  With increased scrutiny of all issues linked to climate change, manufacturers and users are paying more attention to the net ecological impact of insulators – from extraction of their raw materials to how they are manufactured to what happens to them at end-of-life. Read More >

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  Impact of Arrester-Transformer Separation Distance at Substations

  in Arresters

  Locating arresters as close to transformer bushings as possible is usually recommended but not always feasible, especially at higher system voltages. Read More >

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  Shielding Failures & Stroke Flashovers

  in Transmission Structures

  Once shielding failure occurs, wisdom in IEEE Standard 1243 is that a flashover will occur. Read More >

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  Applying Surge Arresters to Mitigate Breaker Transient Recovery Voltage

  in Arresters

  The most severe Transient Recovery Voltage from an amplitude point of view follows interruption of the first phase to clear an ungrounded three-phase fault. Read More >

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  Interchanging Traditional MV Porcelain Bushings with Composite Polymeric Types

  in Bushings

  Replacement or retrofit of medium voltage bushings is common practice after decades operating a power transformer. Read More >

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  Corona & RIV Testing of Transmission Line Assemblies

  in Corona

  Read More >