electric motors 60HZ

by **phatmax** » November 11, 2010, 2:44 pm

I'm moving all my shop equipment over from the States in a few months. Includes a stationary planer, wood lathe, table saw, air compressor... I've talked to an electric motor specialist here and he sez that even if I use a converter to knock the voltage down from 230 to 110, the frequency change of 60HZ to the Thai 50HZ will make the motors burn out very fast. Specifically the lower HZ will not turn the rotor fast enough for them to kick off the capacitor starters.

Fair enough but there's nothing like some real-world experience to validate the point. Has anyone brought capacitor-start motors to LOS and had them function OK? The RPM's won't be what it was w/ 60HZ but other than that, are the motors holding up OK?

by **udonthani** » November 11, 2010, 4:12 pm

As an electronic enginner I can say to you, that your source re. 60Hz and 50 Hz is right. your motors will run warm very fast and thus in turn burn out, and I guess an converter nwill be out of question here, too expensive. For 50 Hz your motors has not enough iron to make a prober magnetic felt

by **BobHelm** » November 11, 2010, 7:37 pm

phatmax the electricity in Thailand is 220v 50hz. I am not sure what your equipment is as I think just about every voltage is available in USA, but I do know that it is certainly usually 60hz.
If you have quality equipment (which I imagine that you do) then it will be very hard to find an equal quality in Udon, it might be possible to find in Bangkok, but, again it will be take a while to search out. It will not be cheap either.
On the 60hz down to 50hz I am sure that what udonthani advices is probably true. It might be worth your while looking at this site (I have no idea if the prices are sensible

) & maybe buying in the USA before you come. I have not seen anything like it in Udon, but, again, I have never seriously looked for one. As with the equipment though much of the electrical equipment available locally is not of the highest quality (

). Good quality equipment is not excessively cheap either as it is usually imported from Germany or USA.
http://www.hzfrequencyconverter.com/#Fr ... Conversion

by **Bandung_Dero** » November 12, 2010, 6:44 am

Might be cheaper just to replace the motors now (if possible), as above, they will not have a long life at 50Hz and in doing so now at least save the costs involve installing a step down transformer. Then of coarse there is the danger aspect of it. You'll have to use GPO's and plugs on your hardware that in no way can fit into Thai receptacles and visa versa, a moment of inattention could see a big cloud of smoke or even worse.

by **LilRed** » November 12, 2010, 9:37 am

In my experience, smaller, particularly intermittent duty 60 hz electric motors, perform ok in 50 hz. Hand saws, drills, fans, etc... I have used my 60 hz Craftsman saw and drill in 50 hz service off and on for 30 years. Both perform properly today, in 50 hz, here in beautiful Ban Chai Pon.

Heavier duty, continuous duty motors do have burn out problems, for example, 5 hp and up electrical motors.

Suggestion:

Bring 'em on. If they fail, there's lots of electrical motor shops can replace/repair the types of motors the stuff you mention typically has...

electric motors 60HZ

electric motors 60HZ

Re: electric motors 60HZ

Re: electric motors 60HZ

Re: electric motors 60HZ

Re: electric motors 60HZ

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