50 Hertz to 60 Hertz Frequency Converter

Have you tested the machine? With 60 hz, a motor will run faster, which means you need to change a pully size. A 50 hz motor has more iron and will run both cooler and faster.

The voltage is important. What if Dubai is 240 volts 50 Hz and the Phillipines is 120 volts and 60 Hz. In which case you need a step up transformer to make 240 from 120 at the rated power needed.

The faster agitating speed makes up for the reduced time.

Don't be silly. Replace them with the correct appliances locally.

In philippines it's 220V 60 hertz and dubai where I bought the appliances it's also 220V 50 hertz so I need only frequency converter. I already read the thread same with my case. And I wrote this again just to get reply from someone who knows where I can get that frequency converter here in dubai or in philippines? Thanks

Oops, I knew that. Whenever I get caught up in someone sending American appliances to the Philippines they have to convert from 115 VAC to 230 VAC.

I really shouldn't answer questions or do anything serious until after my brain gets officially switched on about 8:30 AM.

Well, you could ask Mr. Google. Only, he doesn't respond to CR4 postings so you'll have to go directly. I'm not going to do that for you because that might make you lazy, and we don't want that, do we?

Crabtree, Yes I tried that I asked google about supplier or someone selling it here in dubai and philippines but unfortunately I didn't get what exactly what I want. That is why Im asking here maybe someone has same problem or know where exactly I can buy what I need.

Then find it in another country. Trade is global these days, or hadn't you heard?

Merci bocoupe mr Crabtree but preferred to buy it in our country so I can get the exact and correct machine that I need and if there's something wrong I can easily return it.

OP: "I bougth washing machine and refrigerator here in Dubai which are running on 50 hertz and sent to my country in Philippines which is 60 hertz requirement."

Crabtree: "Trade is global these days, or hadn't you heard?"

Your wit is getting very dry, almost British, Bravo, Monsiour, Bravo.

Don't waste your money, a frequency converter for the power needed for such a machine, will probably cost more than a new washing machine.....or at least a significant part!!

The frequency converter will cost as much as the appliances....

http://www.amazon.com/Frequency-Converter-Household-Version-2000w/dp/B00QZCRY7O

^{The frequency converter will cost as much as the appliances....}

Beat me to it. Supply frequency is something that so many people ignore, yet it is so critical. It's nowhere near as simple as just buying a transformer...

JUST BUY APPLIANCES WHERE YOU LIVE.

And by the way it's not as simple as just having things run faster either. In washers, there are pumps and when a centrifugal pump designed to run at 50Hz runs at 60Hz instead, that's 20% faster. The Affinity Law on speed change tells you that a centrifugal machine's power requirement increases at the cube of the speed change, so that 50Hz designed pump would require 173% more power at 60Hz, which will likely overload the motor and burn it up.

Even if that is not an issue, using a solid state frequency converter also runs the risk that the electronics of the appliance will be incompatible with the pseudo-sine wave output of the frequency converter, not only for things like timers and clocks, but also for some types of motors and motor drives. There are so many different ways appliances are powered now, there are no longer any general statements that apply.

About the only safe bet is to buy a motor-generator set: an AC motor that runs at 60Hz powering an AC generator that puts out 50Hz. Expensive, energy wasteful and prone to wear and tear.

If the frequency is different, whatever you thought you saved by buying appliances in the wrong country is completely consumed in making them function at home, and then some...

I found a good simple explanation for when using a 50Hz motor on 60Hz, what it basically says is = no Problems! That is also my personal take.....

In the other direction its a bit more complicated and possibly has more problems.

See here:-

Changing-an-Induction-Motors-Power-Supply-Frequency-Between-50-and-60Hz

I think that there will be basically no problems at all.....

73% more, possibly; not 173% more

'..so that 50Hz designed pump would require 173% more power at 60Hz,...'

.

Minor correction; it would require 73% more power at 60Hz than at 50Hz. The power required at 60Hz is 173% of that required at 50Hz.

.

It was probably more if a typo than something misunderstood and it certainly doesn't change the validity of the point made.

Dear Mr.raffylauta,

Your equipment is rated for 50 hertz supply and running at 60 Hertz will involve the following.

Washing machine and fridge will run at 60/50 = 1.2 times more.. Regarding, washing machine - the higher basket speed will generate unbalance force by 1.44 times more and may lead to basket damage. You can change pulley ratio so as to have 1.0/1.2 = 0.83 times the original ratio since the basket is driven by v belt pulley sustem with appropriate ratio for 50 Hertz supply. This should be possible. and safer.

Regarding refrigirator, no pulley drive can be used though technically it is possible, since motor drives the compressor. and not wort.

In both cases, the motor will run more hotter at 60 hertz supply which will shorten the life of motor. Pl. get an inverter with 50 Hz output, or dispose the equipement.

DHAYANANDHAN.S

My expereince is motor run cooler at 60 hertz because they are iron loaded for 50 hertz currents. AT 6 hertz current are a little lower. Might also produce less power per rotation, but making more turns it might balance.

these discuss the topic

GA from me.

Not to be a stick in the mud but,,,,

I don't see anything in the OP post saying what " kind " of washer he bought in Dubai.

I bought a washer here locally a few years ago and it does not use a belt and a pulley,

It has a combination motor/transmission/ drive assembly that is connected directly to the basket,,,

The solution depends on the appliances you purchased. Some years ago, I had a 50Hz clothes dryer. When our city was changed from 50Hz to 60Hz (Taif in Saudi Arabia) the dryer rotated so fast that the clothes stuck to the wall of the drum and did not dry. We solved this by changing the motor pulley.

In your case, have you tried using the washing machine? If it works you win, if it fails just throw it away and go to Abensons for a new one. No need for voltage converter since Dubai and Manila are 220V. A frequency converter would likely cost more than a new washer.

Many washing new machines and fridges have a vfd built in. If only the manufacturers would have a method of reprogramming them for input frequency or an auto detect.

Assuming that you got the AC voltage right and this is an up to date design machine, it may have a VFD and not use the frequency of the mains at all for anything......

As someone posted already, if its an old fashioned design, it may turn a little faster, so big deal!

Try it out, what do you have to lose now.....

If replacing the mains plug, DO make sure that you connect the earth, I have never seen such a machine that was double insulated and it has water in it.......safety first.....

I live in The Philippines as well (expat from UK, where the power is 240v 50hz) & I worried about this problem a lot. I couldn't find a frequency converter at a sensible price so I did what everyone on the forum is suggesting, plug it in and run it. Didn't seem to cause any problems, although it may have shortened the life of a couple of the devices.

I suggest you do the same. If it eventually burns out you can buy another automatic washing machine from 'Abenson' for less than 20,000 pesos. (last year I purchased an electrolux auto washing machine there for 17,000 pesos.)

As the items you are running are INDUCTIVE, . . they may not develop the magnetic fiels and torque required . . . to run the compressor or the washing machine.

You need to get an auto-boost transformer to increase the voltage by 20%. Things will start running . . except for the refrigerator light - that will burn out - remove it!

Oleh

The newer washing machines are a whole different animal.

They do not use a standard A/C single phase motor,as in the older models.

There are also no Wig-wag solenoids.

Everything is done by simply controlling speed and direction of the motor.

That is one amazing transmission and control logic!

They control the variable reluctance motors with a controller card in the machine.

These are not easily converted to 60 cycles from 50 cycles,or vice-versa because of the electronics involved.

It can be done, but it is not for those unskilled in electronics.

A VFD is your best bet,and can be purchased ,for a single function,for less than$150 US.

Link: http://www.ebay.com/itm/110V-VARIABLE-FREQUENCY-DRIVE-INVERTER-CONVERTER-VFD-1-5KW-UPDATED-5-48-400HZ-/301654000383?hash=item463bfac2ff

How much did the machine cost?

It might be best to sell it locally,and purchase one when you get home.

Good luck!

Thanks everyone for your time and replies. Washer and refrigerator are both brand new and already sent home and I'm also coming home tomorrow. I will try to bet frequency converter in my country as I expected that someone here who know where to get that thing in Philippines. If I didn't get it I will try what all of you suggested. So good luck to me. But if still someone there from Philippines who got same case with me please share it here. Thanks again folks. God bless!

The combined price of new automatic washing machine and a refrigerator from 'Abenson' will still be about two thirds of the price of a frequency changer. IMO use them on the 60hz supply. If they fail in a few months then buy new.

However if you find a frequency changer here in The Philippines for less than 30,000 pesos please let me know!

Freight for a washing machine must have been quite high, unless the OP was able to get his employer to pay that cost. Air freqight would have been even more.

Hi I found a voltage regulator here in dubai but I'm not sure if it is the right one. How to post a photos here?

I can;t enlarge the picture enough to read the info sheet, but to me that looks like a voltage regulator, not a hz 'adjuster' (If it is just a voltage converter there are lots of those for sale in Philippines)

The device is a voltage regulator. It is not useful for your application.

A further example of 50hz machines running ok on 60hz is a bread maker I purchased in the UK 4yrs ago. Bread Makers are reputedly sensitive to hz, but this machine is still functioning happily