When choosing the electric motor it is necessary to consider first of all features of the drive mechanism and load level. There are several types of the device.
Instruction
1. Direct current motors now are practically not used in life: for them the separate network is necessary, they demand more difficult leaving, and smoothness of adjustment of the course for which they were famous earlier, with the advent of cheap converters of frequency for engines of alternating current now, became not so important. Direct current motors are used at the enterprises where overload capacity and the high starting moment are important.
2. Synchronous motors have number of advantages: improve characteristics of network, easily cope with differences of tension, have high overload capacity and constant speed of rotation. But these electric motors have the high price and the difficult device, it is reasonable to use them, only if power over 100 kW is necessary for you.
3. Asynchronous engines are used for small and average loads. They are simplest in service and have the smallest price. However asynchronous engines are sensitive to supply voltage interruptions.
4. After the choice of type of the engine pick up specific models for power. For this purpose you need to know what power is necessary to set the required mechanism in motion. When choosing the electric motor make sure that your network will be capable to give the necessary tension and current for the correct work.
5. Different models of electric motors are developed under different operating modes. Make sure that the chosen model will be capable to work long time without stops or, on the contrary, will quietly sustain constant cycles of inclusion switching off, that is you have to pick up the engine corresponding to the nature of your technological process.
6. That use of the engine has quickly paid off, it has to be energy efficient. Upon purchase pay attention to energy efficiency class. The highest class - IE3, the engine of such class allows to save very large amount of energy, so, your means.