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  1. hyoid

    How to run a single phase 220v 50 hz motor at 110 v 60 hz

    I have a lathe motor from Europe which is 220v 1/7 hp 0.8 amp 50 hz. My supply is 110 volts 60 hz. I do have a transformer which can up the voltage to 220 but I am concerned about the frequency. Is there a frequency converter or vfd which can work? Thank You
  2. hyoid

    need help troubleshooting a shunt wound dc motor

    Thanks Keith Actually one year ago the motor was submerged in a one hundred year flood. I opened it dried it out and changed the bearings and was good until now. What is an intermittent open? does it explain the inability to reverse and suddenly speed up? Joel
  3. hyoid

    need help troubleshooting a shunt wound dc motor

    I have a shunt dc motor which was working fine one day but not the next. I am a novice when it comes to motors. I took out the brushes which looked ok then opened the motor. I noticed a fine feathery white deposit on the field windings which looked like mold. It easily blew off. I measured the...

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