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Recent content by southward

  1. southward

    Transfomer vector group

    Any advantage in choing which group to use
  2. southward

    pmcc

    What does the CUM stand for in Power Cum Motor control center
  3. southward

    Stator testing

    In API 546 Stator core test for Interlaminar insulation deficiencies (hot spots) are defined as being any core location 5°C above the adjacent core temperature. Does anyone have a precise definition of what "adjacent means" is it the next laminiation, a number of laminations or an area of the...
  4. southward

    Heat loss

    Got a room full of mcc , switchgear, transformers etc. What I would like is a way of estimating the heat given out by this equipment as a percentage of the ratings
  5. southward

    Heat loss

    Anyone got any information of heat loss from electrical equipment eg.MCCs, switchgear etc.
  6. southward

    starting sychronous motors

    This is a new installation. The motor is used to drive a gas compressor. The drive is used to start the motor and to provide a lower inrush current during starting
  7. southward

    starting sychronous motors

    This is a 13.8KV 15MW machine which is being stated using a Siemens 4MW VFD which will be switched out when the motor is running. Is there any chance that "cogging" could do any damage
  8. southward

    starting sychronous motors

    How do variable frequencty drives start synchronous motors
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