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waross's latest activity

  • waross
    waross replied to the thread High School Engineering Project.
    Isn't the root cause more likely to be; The driver changed lanes without checking to see if the lane was clear. Compared to that, not...
  • waross
    waross replied to the thread flame sensor.
    There are approved industrial flame sensor boards that sense a flame and give an output. You do the ignition, manual or automatic, and...
  • waross
    waross replied to the thread Brake pad custom shape.
    My thought also.
  • waross
    waross replied to the thread How to use the Variac.
    That makes sense, given the energy required to raise a large transformer to operating temperature.
  • waross
    waross reacted to davidbeach's post in the thread How to use the Variac with Like Like.
    From the test reports I’ve seen the transformer testing is done at ambient temperature and then corrected to the operating temperature...
  • waross
    waross replied to the thread How to use the Variac.
    I failed when I tried that. The reason? The % imp of the transformer had been tested with the transformer at operating temperature...
  • waross
    waross replied to the thread Auxiliary Motor Speed Impact on Transient Undervoltage?.
    You should be able to hold in the contactors with a VFD. The smaller motors should be able to produce about 200% of rated torque before...
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