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Advantages And Disadvantages Of Single Phase Motors

Thursday - 04/05/2017 08:50
If you are thinking about using a single phase motor in an application, we are sure that you are wondering whether you’ve made the right choice or not.
Advantages And Disadvantages Of Single Phase Motors
As there are a handful of other motors available that may be able to perform the same or a similar function, this wonderment is not unfounded. In this article, we have outlined some of the main advantages and disadvantages that you should be aware of when using such a unit.

Advantages

There are a number of advantages associated with single phase motors, but we have focused only on the main ones here. All of these points are things that will enhance your use of the unit.

Lightweight, Compact Unit

As the transmission voltage is high, the current through the line will be less. This means that the conductor can be quite lightweight and compact in size, which also results in the supporting tower becoming lighter. The unit is, overall, quite a portable one.

Efficient Transmission

Another result of the low current is that the I2R losses are reduced. This means that the efficiency of the transmission increases, ensuring that the unit operates at its optimum.

Less Substations Required

Another result of the I2R reduction is that the distance between the two substations can be increased. This means that fewer substations are required for these systems. The substations can also be located near to the high voltage grid, which reduces the initial cost of transmission.

Disadvantages

There are also a number of disadvantages associated with these motors; we have focused on the main ones here. It is important that you are aware of any issues or challenges you are likely to face.

High Insulation Costs

As the system voltage is quite high, you will find that the cost of insulation is quite expensive. Insulation depends on the voltage of the unit, whilst the size of the wire will depend on the current. So, whilst the motor will run quite efficiently, it will be costly to insulate.

Not Uniform Torque

You will also find that the torque obtained by these units is not uniform, like that obtained by three phase and even DC motors. This is a result of the frequency and can affect operation quality.

Cannot Handle Overload

Finally, you will also find that these units cannot handle much overload, whereas DC models can handle a lot of overload quite easily. If your application is likely to overload the system, this is not the best motor choice and you would be better off looking elsewhere.

We hope that the information provided in the lists above has allowed you to determine whether a single phase motor will best meet the needs of your application or whether you would be better off looking elsewhere.

At the end of the day, it’s important to remember that every motor you consider will have advantages and disadvantages. It is your responsibility to be aware of them all and to weigh them up in regards to your needs.

 

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