[Jewelry making - Article 00195] - Re: [Orchid] Using european 220 volt equipment in the USA

[Dan]

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>     some of my equipment is 220 volt/50 hz

    The 50 Hz should not be much of a problem. It will affect the speed
    of the motor making it run just a bit faster on 60 hz. Many motors
    are rated for both the European and the US voltages. The 220v is
    within +/- 10% of the 208-230v which is pretty standard here, you
    might have 240v, which should also be OK. Just watch it close and
    don't let it overheat as you have said and you will probably be OK I
    think the principal problem is when a motor is taken from here (US)
    and run at 50 hz there. The dual rated motors I've seen are de-rated
    for the speed and Horsepower (KW) of the motors. The bearings and
    cooling of the motor should not have problems at a slightly greater
    speed. It is running a motor at slower frequencies that requires an
    inverter rated motor (Variable Frequency Drive).

Dan Wellman

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