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  Test Requirements for HV Bushings

  in Bushings, HV/HP Testing

  The cost of bushings generally accounts for only 5 to 8% of the total installed cost of equipment but their failure can prove catastrophic and result in loss of costly assets with potentially long replacement lead times. Read More >

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  Applying Surge Arresters to Mitigate Breaker Transient Recovery Voltage

  in Arresters

  Transient Recovery Voltage of a circuit breaker is the voltage difference measured between each side of the breaker to ground and the most severe TRV 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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  Safety of MV & HV Underground Cables & Accessories in Urban Areas

  in Cables & Accessories, HV/HP Testing

  Due to linear installation in vertical and horizontal layouts and relative ease of flame propagation, power cables carry risks with potentially catastrophic consequences. Read More >

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  Transient Analysis of Power Transformers Using Finite Element Method

  in Utility Practice & Experience

  Accurately and efficiently predicting currents and voltages on the primary and secondary windings of transformers can be challenging, especially for cores with non-linear material properties. Read More >

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  Protecting Neutral Terminals of Power Transformers at Distribution Substations

  in Utility Practice & Experience

  Whenever a power transformer’s neutral is grounded through impedance that can be resistive or inductive or even ungrounded, it is important to protect the neutral terminal from surges that can be transferred through the transformer. Read More >

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  Technical Review of RTV Insulator Coatings

  in Insulators

  Different maintenance practices have been developed for HV insulators operating in polluted environments. Read More >

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

  in INMR Español, Pararrayos

  Read More >

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  Reviewing Insulator Design Criteria, Operating Parameters & Applicable Standards

  in Insulators

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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 >