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Corona Rings And Shielded Rings

Developed from high strength copper and aluminum, the offered range of Corona Rings and Shielded Rings is used for corona controlling of electrical arrester, shunt reactor, power cable and high voltage bushing. The presence of these rings can be noticed in high voltage power distribution lines where these are required to minimize corona releasing rate. The releasing of corona leads to malfunction in electrical insulators that may cause failure of catastrophic insulation. Hot dip galvanized surface of these rings is completely rust and moisture protected. Standard quality, homogeneous electric field, long working life, durable structure and precise dimension are the key attributes of these Corona Rings and Shielded Rings.

Features
  • These rings are made of standard grade aluminum and copper with galvanized surface.
  • These are effective in reducing corona discharging level.
  • Accurate dimension
  • Long service life
Corona Rings
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Corona Rings
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Corona Rings are round shaped metal, which is attached to a terminal of high voltage appliances. These are used to distribute the electric field gradient and reducing its maximum value below the threshold, thus preventing corona discharge. To prevent corona formation, large rounded balls and toruses are installed on the terminals of high voltage equipments. These rings are installed at attachment points where wires or bus bars are connected to insulators.
Corona Rings for Surge Arrestors
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Corona Rings for Surge Arrestors
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Corona Rings for Surge Arresters are customized form of corona rings to use with surge arresters. These increase the lifetime of insulator surfaces by diminishing the corona discharge effect. The method of suspended rings is the most common way of improving the voltage distribution. There are various customizations available in these rings. The rings are designed and fabricated with advanced types of equipment and progressive engineering techniques. These rings are available in different technical specifications according to the needs.
Corona Rings for Insulators
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Corona Rings for Insulators
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Corona Rings for Insulators are customized to use corona rings together with insulators. These are drawn and fabricated using best quality metal. The rings are used to reduce corona discharge on insulators. The impact of corona rings on insulators can be determined by the concept of efficiency. The ring parameters are optimized to measure the effect of reducing the field stress on insulators. Greatest impact on field reduction is caused by variation of corona ring diameter.