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VFD DIAG

Discussion in 'Ask the Experts' started by backhoelover, Jan 10, 2020.

  1. backhoelover

    backhoelover SERVICE MANUAL MASTER GoldMember

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    Anyone in here diag VFD as a main job? If so would you pm me so I can Scratch you brain?
     
  2. Al Smith

    Al Smith Pinnacle OPE Member

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    A VFD basically works by changing AC to DC then making a variable frequency AC out put .I've never repaired or built one but I have installed several in an industrial setting . They work to a point but best on AC motors designed for inverter duty . Generally speaking a standard duty AC motor not so designed will experience over heating at lower than base speeds of operation for any length of time .
     
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