Can you run 220V 3 phase 60Hz motor on a 220V 3 phase 50Hz supply?

Answer 1

The motor will run, but it will turn slower than the nameplate rating, it will draw more current, it will run hotter than it would have on 60Hz, and it will not ouput the full rated horsepower. Depending on the application and how hard the motor is actually loaded, you might be able to get away with it, but usually not. 220V 60 Hz motors are rare. It is more likely a 208V, 230V or 240V motor. Some motors are actually dual-rated for both 50 and 60 Hz, with corresponding different speed and Amp ratings. Check the nameplate!

Answer 2

A 230v 50 Hz motor on 220v 60 Hz would run faster. Most 50 Hz motors are rated around 1550 rpm and would run somewhere around 1800 rpm on 60 HZ. I have connected several 50 Hz motors on 60 Hz power with no problems.

Answer 3

A motor designed to operate at 220v will not normally operate at 208v correctly unless it is a multi-voltage motor and then when it is wired the leads are wired in a different pattern. Unfortunately without the nameplate information i cannot help you further. As far as the risks of hooking up a 220v motor to 208v, first you have to calculate for the extra amp load on the wire to make sure you do not overload the wire or breaker, secondly if the motor is not multi-voltage and you apply 208v to it the motor will draw excessive amperage causing heat buildup thus destroying the windings. hope this helps.

Answer 4

Yes it can, but there are other factors involved. If the motor is a 'universal motor' such as in a vacuum cleaner or kitchen mixer, the applied voltage is the critical factor. These motors have brushes and a commutator and their speed is governed by the amount of current 'pushed' through them and the load on them. These motors are also sometimes referred to as 'universal motors' because they can generally operate well over a wide variation of frequency, some will even operate well on DC. A 'true' AC motor has its speed determined primarily by the frequency of the applied voltage rather than the voltage applied to it. It must receive enough current to maintain this speed, but will never exceed it's 'synchronous' speed regardless the amount of voltage applied or lack of load. While a 'true' AC motor designed for 220V 60Hz will operate at 220V 50Hz, it will rotate slower because of the lower frequency, so if it is a two pole motor (nameplate rated speed of 3500-3550 RPM) it will rotate at about 2900-2950 RPM. Another factor is that since the frequency of the applied voltage is less, the motor's windings will provide less reactance so more current will flow through the motor causing more heat to be developed and quite possibly resulting in a fire or at best a burned out motor. Check the spec plate on the motor as some motors are designed to operate on either 50 or 60 Hz. Otherwise look into a voltage reduction transformer.

Answer 5

It will turn but it will run at about 5/6 of the normal speed, it might overheat even on light load because of increased losses in the iron core of the magnetic circuit, and its oiwer output might be somewhat impaired.

Answer 6

If you are asking whether a 220-V, 60-Hz, load will work with a 220-V, 50-Hz, supply, then the answer is... probably! It depends on the nature of the load. For example, resistive loads such as incandescent lamps, heaters, etc., will work fine. But, at the lower frequency, Transformers and motors will likely overheat -this won't necessarily prevent them from working, but it's possible that they may fail earlier than intended (US servicemen, based in the UK, run their American-style fridges, etc., without much of a problem at the lower frequency).

Answer 7

Yes but it might run at 5/6 of the speed if it is an induction motor or synchronous motor. The magnetising current at the lower frequency might also cause the motor to heat up more, so it might have to be run at reduced power, with a reduced mechanical load.

Answer 8

Yes. It will work OK but run about 20% faster than the name plate indicates.

Answer 9

Yes but some types of motor would run more slowly and mighlt not supply their rated mechanical load.