Featured Content

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  Pollution Test Procedures for Insulators Made from Hydrophobicity Transfer Materials

  in HV/HP Testing, Insulators

  The need for an updated technical review of pollution testing of insulators made from hydrophobicity transfer materials (HTM) originated during discussions held at the 2019 INMR WORLD CONGRESS. Read More >

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  Developing Next Generation HV Cable Accessories

  in Cables & Accessories

  Power distribution networks are changing rapidly as integration of renewables as well as creeping urbanization require updated concepts in power infrastructure. Read More >

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  Overview of Cable Testing: State-of-the-Art, Standards & Technologies

  in Cables & Accessories, HV/HP Testing

  One of the biggest challenges in testing power cable systems is finding the optimal balance between highest efficacy and lowest risk of damage. Read More >

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  Failure Statistics from Testing Cables & Surge Arresters

  in Arresters, HV/HP Testing

  Years of experience testing components and equipment for medium and high voltage power networks have offered valuable insight into issues of quality and performance. Read More >

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  Increasing Transformer Reliability by Proactive Bushing Fleet Management

  in All Articles, Bushings

  If a bushing fails, the typical result is extended downtime of a power transformer with not only heavy financial losses but also challenges imposed on the system operator to compensate for the lost unit. Read More >

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  Maximizing & Validating Ultimate Capacity in High Strength Insulator Applications

  in Insulators

  Power projects with ‘High Strength’ within their scope typically receive special attention since high strength insulators have the potential to improve their efficiency through shorter duration and lower total cost. Read More >

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  UV & IR Imaging of Defects in HV Components

  in Corona, Utility Practice & Experience

  Ultraviolet discharges and thermal hotspots are reliable indicators of defects at electrical installations and being able to efficiently visualize these has therefore been a longstanding goal among power utilities. Read More >

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  Case Study for Application of Composite Interphase Spacers

  in Transmission Structures, Utility Practice & Experience

  Galloping is large amplitude, low frequency, wind-induced oscillation of overhead lines, often from ice accretion on the conductor that modifies its normal cross-sectional shape such that it becomes aerodynamically unstable. 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 >