15 + Surge Arrester Corona Ring Background Images. A corona ring is traditionally used to electrically shield external hardware to prevent. Corona rings are installed at these points to prevent corona formation.
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Most equipment manufacturer provide corona ring base on testing such surge arrester, switches, CTs/PTs, etc. ground end hardware.
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15 + Surge Arrester Corona Ring Background ImagesYes they are station class GE Tranquell arresters. Selection of surge arresters depends on: importance of the risk, susceptibility of the devices and earthing system of the electrical network. A surge arrester is a protective device for limiting voltage on equipment by discharging or bypassing surge current.