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  • Users: Hertz
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  1. Hertz

    IEEE-518

    IEEE-518, dealing with the separtion between power and control cable trays was withdrawn in 1997. Does anybody know if is replaced by another standard or another standard covers the material?
  2. Hertz

    Motor Insulation Class

    Has anybody heard of Class C insulation for canned (sealless motors)?
  3. Hertz

    Unit-Substation Transformers Efficiency

    Does anyone has a graph showing the efficiency vs. loading for unit-substation transformers rated 1500-2500 kVA? In double-ended unit-substations these trafnsformers are usually loaded at 50%, and I am interested in seeing what penalty one pays for this. Thanks
  4. Hertz

    Induction vs Synchoronous Motors

    I am looking for a graph of hP/rpm, showing the suitability of induction/synchoronous motors. Any Ideas?

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