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Ultrasonic Tip - Corona Found While Scanning Substation or Switchgear

May 24, 2007
(Ultrasound Testing)

If “corona” is found while scanning substation or switchgear with your airborne ultrasound instrument, take action to clean-up the gear. Corona exists to find ground. It should always be taken seriously.

Tip provided by Jim Hall


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Comments (1)

  • Exactly right, corona means insulation failure on your switchgear and it need to handle as soon as possible, if not, your substation or switchgear will get catastropic failure from short to ground

    Thanks for the tips

    1) Posted 4:45 am, 04 June 2011 by sofan

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