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  Designing & Testing Solid-Core Bushings for Long Service Life

  in Bushings

  While all current bushing technologies are characterized by high operational reliability, there is now a trend toward greater awareness of their safety aspects and this has resulted in greater focus on advancing dry technology. Read More >

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  Insulator Failure Versus Insulator Technology Failure

  in Insulators

  Although each insulator technology has a solid track record based on decades of successful applications across the globe, each also has notable examples of failure. Read More >

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  Protecting Neutral Terminals of Power Transformers at Distribution Substations

  in Utility Practice & Experience

  There are applications where, for specific reasons, a power transformer’s neutral can be grounded through impedance that can be resistive or inductive or even ungrounded. Read More >

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  Arrester Housing Design & Application

  in Arresters

  While a composite insulator is made primarily of polymer rubber on the outside and a fiberglass rod or tube on the inside, polymer-housed arresters feature a rubber material on the outside and a strength member binding the MOV disks beneath. Read More >

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  Impact & Mitigation of Icing on Power Network Equipment

  in Utility Practice & Experience

  The disruptive effects of icing result from excessive ice or snow accumulation, combined with wind forces, as well as subsequent jumping of cables and conductors following sudden ice shedding. Read More >

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  Knowledge & Experience in On-Site Commissioning Testing of High-Voltage Cable Systems

  in HV/HP Testing

  To ensure proper cable installation and the correct assembly of accessories, international IEC standards mandate electrical testing after installation—known as commissioning tests—for newly installed cable circuits. Read More >

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  Simplified Models of Lightning & Grounding Issues (Part 1 & Part 2)

  in Arresters

  The decision to apply line surge arresters (LSAs) in difficult terrain is informed by estimates of local ground flash density and the ‘critical currents’ that cause flashovers. Read More >

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  Limitadores de voltaje de pantalla para proteger cables eléctricos HV

  in INMR Español, Líneas, Pararrayos

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  Understanding Arrester VI Characteristic Curves

  in Arresters

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