What Are Motor Starters?

This electronically functioned device supports the starting and ending of a motor. Motor starter (มอเตอร์ สตาร์ท เตอร์, which is the term in Thai) are available in different types depending on various factors. The need for a motor starter highly depends on the kind of motor one would be working with. Usually, low-powered motors do not require a starter but again the factors that determine a low-powered motor might vary. The main factor that determines whether you need a motor starter would be the amount of current that is drawn on startup. 

How To Choose A Precise Motor Starter?

Selecting the right motor starter requires one to have in-depth knowledge of the application and the purposes it would be serving. Knowing about the voltage and the current rating of the motor is necessary as well as knowledge about the available control voltage. The current rating would always include both- the full load current alongside the maximum current. 

There are other considerations that one should be aware of including knowing whether to choose an IEC or NEMA rated starter. Usually, while purchasing, one should know that NEMA starters are larger than the IEC models and also tends to be a bit on the expensive side. But they are highly flexible and could meet all the different applications required in a versatile working environment. 

Types Of Motor Starters Depending On Starting Methods

  • Across The Line Starter 

This kind of starters usually connect the motor with the power line directly and offer full voltage. The motors which are connected this way come with a low power rating making sure not to cause a voltage drop. 

They are used in applications where they have to run in one direction and come with low ratings.

  • Reversing Starter 

This kind of motor starter comes with two magnetic contractors with two phases- mainly the forward and the reverse one. It is used for different applications where the motor has to run in both directions and for controlling, the contactors are used.

  • Multispeed Starter 

When it comes to varying the speed of an AC motor, knowing how to vary the AC supply frequency is crucial too including knowing how to vary the poles. Motor starters are used with pre-selected speed so that all their operational requirements are met.

  • Reduced Voltage Starter 

When it comes to starting a motor, the most common type would be by reducing the voltage of the motor at the starting so that no inrush current could cause any kind of damage. Otherwise, the windings of the motor could be damaged and this could cause a huge dip. These starters are usually seen for high-rated motors. 

Therefore, these are some of the known types of motors, and knowing how to select the right one is crucial too. Knowing what to look out for and based on what is vital so that you safely start and stop the motor and reverse the direction of the motor without any hassle.

By Richard