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  1. PowerGenJim

    Oxygen and CO in GSU with no sign of overheating

    Thanks bacon4life. Yes it does, but the plants insurance inspector has reported in each of last two annual reports that the oil cup on the breather had oil level well below the normal line. I can't comment on the color of the desiccant (where color changes with saturation) at this time but have...
  2. PowerGenJim

    Oxygen and CO in GSU with no sign of overheating

    I read the post about oxygen in transformer oil. I am assisting a client with a GSU issue that sounds similar, BUT different. They have a >800MVA GSU with conservator, in service since late 2011. Looking at tests from 2015 thru last month August 2017, the unit has high CO (Condtion4 level of...
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