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Green Liquid Leaked from CT Secondary Terminal Board of 132 kV GIS

  1. Nov 5, 2012 #1
    Hye everyone!

    An unknown thick-and-sticky green liquid was found leaked from 2 out of 9 feeders, of our 132 kV Switchgear. The liquid was leaked through the cable gland that connected to the Secondary Terminal Board insulating cap of the Current Transformer, at the GIS.

    I had done:
    1) gas leak test - no gas leakage detected
    2) hotspot test using thermography camera - no hotspot.

    According to our chargeman, around 6-7 years ago, there is a case when they found out that inside the CT secondary terminal board, there was cracks. And all CT secondary board for all feeders was then replaced.

    I just wondered if the same thing happened. Or the green liquid was just a kind of grease or softener for the cable.

    Hopefully someone can help me. Thank you!!!
  2. jcsd
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