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Recent content by PDAGuru

  1. PDAGuru

    Electrical Test Question for larger transformers

    I would say no. The impulse test itself is already a test for deterioration of winding insulation. It does contribute somewhat to aging but applying another surge, even a large one like that endured in an impulse test, should not significantly deteriorate the insulation.
  2. PDAGuru

    IEC 61850 Interoperability Course / Training / Workshop

    Re Nick75's post: Kinectrics also has a course on IEC 61850 which includes lab testing of IEDs from several different vendors for true inter-operability (i.e. not just compatibility with the 61850 standard). The software tools, engineering and modifications required to do that are covered...
  3. PDAGuru

    Stator testing

    No, I don't think anyone has a precise definition of "adjacent" core temperature. Its kinda subjective, like asking 'how long is a piece of string?' In a thermal scan, it could be interpreted as 5 C above the temperature of the surrounding area (i.e. the blue area, hopefully, around the...
  4. PDAGuru

    Generator Inspection

    Partial Discharge Analysis, both off-line testing and especially on-line monitoring, is a good (fast, easy) way of testing the condition of generator stator insulation while the nachine is in normal operation and under all the usual thermal, mechanical and electrical stresses that it sees in...

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