Author Topic: Will a Samsung QLED TV rated at 60Hz work on 50Hz?  (Read 380 times)

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Offline rfengg

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Will a Samsung QLED TV rated at 60Hz work on 50Hz?
« on: August 20, 2018, 10:47:00 am »
All,

Got a funny issue  :-// to deal with, so out to you guys for your  expertise.
Got hold of a new Samsung QN65Q9FNAFXXR QLED TV for a good price directly from South Korea where these are made.
The label on the back clearly says its rated for 220-240V but 60Hz.
I need to take it to a country which uses 220V , however the line frequency there is 50Hz.
Was wondering if the 50Hz line voltage will cause any issues?
Will there be any flicker on the screen due to the frequency difference?

Similar question for a washing machine and a fridge, both are made for 60Hz but voltage wise is fine.......will the motors in these machines run slower if I run it on a 50Hz supply?

thanks and BR.
 

Offline james_s

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Re: Will a Samsung QLED TV rated at 60Hz work on 50Hz?
« Reply #1 on: August 20, 2018, 10:59:04 am »
I would be shocked if the TV has any issue at all, almost always the first thing that happens in the power supply is the AC is turned into filtered DC. The only difference between the 50 and 60Hz models is probably the label, assuming the regions in question use the same broadcast format.

The second question is definitely a case of "it depends." AC induction motors are frequency dependent and will run slower on 50Hz, which may or may not be a problem depending on what it is. Another issue is that the inductive reactance of the windings will be lower on 50Hz so a motor or transformer designed for 60Hz may saturate and overheat on 50Hz. I don't know if tech has changed but every refrigerator I've seen has an induction motor in the compressor so if it does work on 50Hz the cooling capacity will be reduced because the compressor will be pumping slower.

Now a washing machine you might have better luck. In North America they historically have used AC induction motors but in Europe it has been much more common to use DC or universal motors. A lot of modern washers worldwide are now using brushless DC or switched reluctance motors which shouldn't be dependent on line frequency however some machines may have control transformers or small motors driving water pumps that may have issues.
 
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