Insulating oil leak containment

  • US 6,476,723 B1
  • Filed: 08/06/1996
  • Issued: 11/05/2002
  • Est. Priority Date: 03/08/1995
  • Status: Expired due to Term
First Claim
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1. An apparatus for preventing environmental contamination by leaks of electrical insulation oil from an electric power transmission device having an external oil filtration system, said apparatus comprising the combination of:

  • an insulating oil circulation system having an oil filtration unit and a motor driven circulation pump;

    a first circulation flow conduit between said filtration unit and an electric power transmission device;

    a second circulation flow conduit between said pump and said power transmission device;

    a secondary containment volume enclosing said filtration unit, said pump, said first flow conduit and said second flow conduit;

    a sump volume having a gravity flow channel connection with said secondary containment volume; and

    oil sensing means for transmitting a signal in response to the accumulation of insulating oil in said sump volume.

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