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  Monitoring Condition of Surge Arresters

  in Arresters

  Metal oxide surge arresters have high reliability and will function as intended almost indefinitely, assuming that they have been well designed, properly manufactured and operated within their specified range of applied voltage, temporary overvoltage, surge magnitude and surge energy. 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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  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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  Corona Rings & Composite Insulators

  in Corona

  Composite insulators used at transmission voltages must be equipped with properly dimensioned corona rings to reduce risk of erosion to their housings. Read More >

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  Dielectric Frequency Response to Diagnose Condition of Bushings

  in Bushings, Maintenance

  It is important that all maintenance programs include bushing condition assessment since a problem with even a single bushing can prevent a transformer/reactor from returning to service. Read More >

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  Dimensionamiento de pararrayos para sistemas de subtransmisión que utilizan transformadores de puesta a tierra

  in Aisladores, INMR Español

  Los transformadores de puesta a tierra se utilizan para detectar fallas de línea a tierra y estabilizar el neutro durante situaciones de desequilibrio del sistema, como fallas. Read More >

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  Overview of Failure Modes of Line Insulators

  in All Articles, Insulators

  Electrical, mechanical and environmental service stresses can result in significant differences in types and rates of failures of the three different insulator technologies. 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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  Composite Insulating Cross-Arms for 400 kV Lattice Towers

  in Utility Practice & Experience

  A great deal of research has been devoted to finding tower designs that utilize composite cross-arms to replace insulators as well as traditional steel cross-arms. Read More >