Featured Content

• 

  Comparative Testing of Helical & Concentric Shed Profiles on HV Bushings (Video)

  in Bushings

  Full-scale comparative testing was performed on commercially available transformer bushings during heavy rain after complete loss of hydrophobicity. Read More >

• 

  Test Requirements for HV Bushings

  in Bushings, HV/HP Testing

  Although bushings generally account for only 5 to 8% of the total installed cost of equipment, bushing failure can result in loss of costly assets with potentially long replacement lead times. Read More >

• 

  Manufacture of Porcelain Insulators

  in Insulators

  Due to continuous refinements in composition, processing and testing, modern electrical porcelain has remained the most widely used insulator technology found at substations the world over, in spite of growing inroads by advanced alternative technologies. Read More >

• 

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

  in Aisladores, INMR Español

  Read More >

• 

  Technical Review of RTV Insulator Coatings

  in Insulators

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

• 

  Bird Hazards to Transmission Lines

  in Wildlife Protection

  Birds present a persistent threat to the safe operation of overhead transmission lines and are a significant factor behind line tripping. Read More >

• 

  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 >

• 

  Type & Commissioning Testing of High Voltage Cables

  in Cables & Accessories

  Extruded XLPE cables in underground transmission systems now account for the vast majority of new installations. Read More >

• 

  Understanding Energy Rating of Distribution Arresters

  in Arresters, Editorial Columns, Woodworth on Arresters

  Read More >