What happens if I use a 60 Hz appliance in 50 Hz_ - Quora multinational debit card owned by mastercard

What happens if I use a 60 Hz appliance in 50 Hz_ – Quora multinational debit card owned by mastercard

It depends on the voltage as well.

If the voltage remains same in both cases, then the appliance will get hot. This is because the V/f ratio will increase which will lead to the rise in current drawn and thus heating the device. It can be also analysed in this way, loads are inductive in nature so the reactance(2*pi*f*L) decreases because frequency is decreasing, which leads to rise in the current drawn thus heating the device. Also since frequency is decreasing, so the speed of cooling part now decreases, which further increases the temperature. But if the appliance involves universal motor or is a heating element, then there will be no effect on it.

Now, if the voltage rating in case of 50 hz is higher, say 230 V in 50 hz and 110 V in 60 hz, which is generally the case then, since the current will almost double in this case and if the windings are not designed to carry this large amount of current then the instrument will get damaged or otherwise may heat up drastically and finally get damaged.Multinational debit card owned by mastercard

Edit : there will be no effect if the rectifiers are involved. This is because the rectifiers do not involve the frequency term in the final relations. In this case there will be a little increase in the ripple in the voltage but this increase is quite low and hence wont affect on its working. Hence not much effect on chargers will be seen and they will work effectively on both frequencies.

Thanks for the A2A.

As long as the voltage is still correct, some appliances won’t care.

Electronic devices which use internal power supplies to rectify and lower the voltage for internal use will handle 50/60 hz without a problem. Some of these devices don’t care too much about the voltage either, allowing anything from 100VAC to 260VAC. I’ve even known people to take the risk and run their mains tvs on 100VDC without the TV having an issue.Multinational debit card owned by mastercard the risk here is that DC is prone to arcing and an unsafe connection could do a great deal of damage.

Some motor-driven devices (power drills etc.) have universal motors which don’t care about AC, DC or frequency. You’ll notice very little difference in their operation. If the motor screams when running, it’s probably a universal. This comes with a caveat: if the device includes electronic control (speed, power etc.) it may be negatively affected.

Devices which use induction motors will be the most affected, from wall clocks machine shop equipment. Valve tvs used the mains frequency as a clock pulse and some mains powered clocks rely on the synchronous motors to stay on time. If you connect a 60hz clock to 50hz mains, it will run slower and get further and further behind.Multinational debit card owned by mastercard reversing the situation, means the clock will run faster.

I am aware of someone who shipped her IBM selectric II typewriter from the US to australia. Even after converting to the correct voltage, the machine ran too slowly to be of any use, and there was also the risk that the motor could overheat, because the fan wasn’t going to cool the motor adequately.

Devices with induction motors usually run more quietly, and often use mechanical switching for speed control; 3-speed pedestal fans being the most notable. Speed is controlled by switching distinct sets of coils to achieve different speeds.

Edit: additional information in response to praveer yadav :

This is only in the case of synchronous induction motors.

I will make a very crude comparison between a 50hz three-phase motor and a stepper motor (usually four-phase for digital reasons).Multinational debit card owned by mastercard

If you look inside an induction motor (e.G., a lathe), there is no electrical connection between the stator coils and the rotor coils. The current flow in the rotor coils is induced by the stator coils. In the case of three-phase, you have three sets of coils that are peaking in voltage (in rotation) at 150hz. The armature has to follow these peaks to stay in operation rather like the stepper motor following the DC coils — the faster you switch the pulses, the faster the stepper runs.

This means, depending on wiring, that the induction motor will usually run at 3000rpm to stay in sync with the power, although some are wired slightly differently to give a speed of 1500 rpm. If you increase the frequency to 60hz, then the peaks being followed by the armature increase to 180hz, and the motor will run at 3600rpm.Multinational debit card owned by mastercard

Three phase: