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Recent content by jimmymac2

  1. jimmymac2

    What is "IRR"?

    I believe that may be Initial Rate of Return.
  2. jimmymac2

    ABB TPU 2000R (Differencial Protection)

    The only problems I know of related to the TPU are software bugs and I believe these problems have been addressed in v4.3 of the WinECP software. If you're relay tripped on the differential element for a fault outside the zone of protection then I would re-evaluate your CTs. Make sure that they...
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