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220V 50HZ to 110V 60HZ

11/08/2008 7:56 AM

I will be moving to a country that uses 220 50hz and I want to be able to use my woodworking tools that are 120 60hz.

What type of converter will I need and where can I find one

Thanks

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Guru
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#1

Re: 220V 50HZ to 110V 60HZ

11/08/2008 8:13 AM

I am scared, Most of 60 Hz equipments are not recommended to operate on 50Hz directly as they can start Burning more power for nothing.

Device that can you can use for this purpose is called cycloinverter, But I Think its going to be expensive.

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Member

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#2

Re: 220V 50HZ to 110V 60HZ

11/08/2008 9:27 AM

i would prefer you to simply get a 220/120 volts transformer.although transformer cant change the frequency but it would be not a problem with 60 hz on operating at 50 hz.

i have already used such a system and it is working fine

regards

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Guru
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#4
In reply to #2

Re: 220V 50HZ to 110V 60HZ

11/08/2008 1:47 PM

Sorry but this is not always going to work. To start with you suffer a 20% power loss when running a 60Hz motor on 50Hz. Universal brush type motors are not too bad but inductive type motors will have more dificulty starting. If the motor is equipped with starting caps you wil lin al llikely hood blow the caps. I know, I tried it. Results were unsatifactory.

Hand drills and small power tools may work as long as you do not load them up as much. Lathes, band saws, and planers which normally use inductive motors should be refitted with a suitable motor designed for 50Hz. Most contemporary electric motors have too little iron core and copper windings to run with a lower frequency. you will find many of them run too hot and this also reduces working life.

The wiring and switches should be okay because if they are UL or CSA approved the rating of the insulation is usually 600v and thus suitable for 230V service. However if it is only 300V then you are also looking at a rewiring job. Failure to do so will cause dielectric breakdown and a popped breaker as the least worry. But it could also pose a shock hazard which could be lethal.

Moving from a 50Hz environment to a 60Hz environment is usually less trouble than going the other way round. Unless the cost to replace the machinery is prohibitive, you may be better of selling the 60Hz stuf befoer yo umove then buying new replacements when you arrive. If the weight of tools and machinery is considerable you need to factor in the shipping costs as part of the overall price to move when looking at the cost to buy replacements.

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#3

Re: 220V 50HZ to 110V 60HZ

11/08/2008 10:43 AM

lkertchaai; look at the name plate on the motors, many are reconnect-able for 220/230 volts. some motors are a series wound with brushes that would be marked AC/DC 25-60 cycles or hertz, you could you a diode or scr type variable speed control, some motors
are a permanent magnet motor with a full wave rectifier to change the a AC to DC to run the motor other wise a autotransformer to step the voltage down to 110/120 volts. perry

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#5

Re: 220V 50HZ to 110V 60HZ

11/09/2008 12:09 AM

I moved to europe, shipped my winnebago motorhome over to live in, took all my shop tools and all I had to do was buy a transformer. transforms 240 50 to 120 60. No problems except the G damn thing had a faulty circuit breaker so I bought another one, bigger, and have had no trouble. Bought the transformer in Berlin and I now hang out in the south of spain.

Happy trails,

jazz

jazzridez@hotmail.com

by the way it's 240 v and 50 h all over europe. Transformer works like a top.

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#6

Re: 220V 50HZ to 110V 60HZ

11/09/2008 1:23 AM

I moved to europe and shipped my winnebago motorhome there also. I took all my tools and before I could use them I had to purchase a 240/50 to 120/60 transformer. Within a few months the circuit breaker went south so I bought a bigger one, installed it and have not had any trouble since. transformer at Conrad Electronics in Berlin was 200 euros. ....$300 USD. No trouble. Don't let anybody tell ya different. It's that easy.
happy trails
jazz

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#7

Re: 220V 50HZ to 110V 60HZ

11/09/2008 8:12 AM

You will need a simple 220 vac x 120 vac transformer to correct the voltage, and these are relatively inexpensive. Of more concern is the the difference in frequency, as a 60 Hz motor can run on a 50 Hz electrical supply, but it will only run at 5/6 of its normal speed. And, it will run a bit warmer when subjected to a load than it would if operated on a 60 Hz electrical supply.

Look at the electrical escutcheon of each tool, and see if the tool it is rated for 50/60 Hz operation. Many modern tools are capable of safe operation at either frequency because they have heavier windings with better thermal transfer capabilities. If your tools are not dual frequency rated, they can still be used. You just will not attain the speed and power levels you once had, and they will run a bit warmer.

You can purchase a frequency converter, and they are a bit expensive for a high-quality unit. Surely one of the larger electrical firms makes a combination of a voltage transformer with a frequency converter that will be of suitable size? I just never needed one so I can't furnish you with a specific manufacturer or model.

Best Regards,

Ing. Robert Forbus

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Guru

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#8

Re: 220V 50HZ to 110V 60HZ

11/09/2008 4:27 PM

Woodworking tools generally use high-speed serial motors so frequency is not critical. If there is no built-in speed-control you can supply them even with DC. The difference between the 60/50 Hz must not mean any problem for the speed control so you will only need a transformer.

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Guru
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#9

Re: 220V 50HZ to 110V 60HZ

11/09/2008 5:50 PM

Are you just talking about small hand tools or real wood working tools like table saws planers, sanding machines etc. ? Electric hand tools with universal brush motors that have commutators will work on both frequency and only require a voltage change using a transformer. BUT. . . . inductive ( no commutator or brushes) motors will run slower on 50Hz if designed for 60Hz. And they will heat up. Not t omention which they wil no thav eas much power and performance may prove disappointing. Saws and planes may bog down. Vacuums may burn out. So called dual frequency motors have proved disappointing in practice. They invariably fail in a year or so. I have stopped using such motor in my designs because of the negative feed back from the users in the field. .

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#10

Re: 220V 50HZ to 110V 60HZ

11/09/2008 8:19 PM

I have used an occassional circular saw and variable speed reversible drill over in Europe now and then just using a transformer - they would do the job run okay, but tended to heat up pretty fast. I think the motors ran a little slower as well, but I'm not sure. As long as we were careful to watch the duty cycle and not overdo it, they did okay.

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Guru
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#11

Re: 220V 50HZ to 110V 60HZ

11/10/2008 8:47 AM

Just went through a similar scenario at work. We must test a signal panel with only a 10A 24VDC power supply present to use AC power - remaining devices in the panel run off this power supply. The power supply is universal (i.e. - the input voltage can be 85 to 285 VAC @ any frequency, or even DC) but the equipment it is on is being used in Asia. The customer insists we use 230VAC 50Hz to test, not our in house 208VAC 60Hz. I Googled "Frequency Converter", and found numerous companies that make converters that accept most any input (120/208/230/240VAC @ 50 or 60Hz) and give you what you specify you want as an output. (in your case - 120VAC 60Hz) Basically they work like a variable frequency drive - AC in at what ever frequency - AC out at specified frequency.

Be fore warned - these things aren't cheap. A known big time manufacturer wants about $6000 for a 10KVA unit. A small shop unknown manufacturer in S.E.Asia will sell one for $1200.

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#12
In reply to #11

Re: 220V 50HZ to 110V 60HZ

11/10/2008 11:25 AM

phys; i would like the name of that power supply, would it work on 6,12,48, volts DC also thanks perry

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Anonymous Poster
#13
In reply to #11

Re: 220V 50HZ to 110V 60HZ

07/27/2009 7:51 AM

Do you have the name of this shop in S.E. Asia?

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Users who posted comments:

Anonymous Poster (2); elnav (2); Ing. Robert Forbus (1); jazzridez (1); jpsdhanny (1); perry (2); Phys (1); Qqberci (1); rakesh_semwal (1); Sleddriver (1)

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