In three-phase asynchronous motors, the delta and y-connections are commonly used, which is familiar to everyone. Today, the editor of Dalan Motor introduces you to another connection method-Yanbian triangle connection.
The extended triangle is a combination of the two connection methods, so that the stator winding of the motor is connected to a Y shape, and the other part is connected to a â–³ shape. From the graphical symbol, it is like extending the three sides of a â–³ "Yanbian triangle".
The methods of buck start are generally: "resistor buck", "star-delta buck start" and "compensator start", etc., they all have major disadvantages.
When the resistance voltage drop starts, a large resistance box needs to be connected in series in the stator circuit, which not only greatly increases the volume of the equipment, but also consumes a lot of electric energy, so it is not used much.
The starting power of the star-delta starting is very small, and it is only suitable for starting the motor under no-load or light-load state. The heavy load or full load must be started with a compensator. However, the compensator is expensive and consumes a lot of non-ferrous metals and ferrous metals during manufacturing, and it has the defect that it does not allow frequent starting, which is not suitable for electric motors that require frequent starting. good idea.
Yanbian triangle start is a new type of three-phase asynchronous motor starting method. Using this method to start, you can completely remove the burden of resistors, compensators and so on, and only use the certain connection method of the nine terminals of the motor (more than three connectors are drawn in the stator winding of the motor). The purpose of depressurization can be achieved when starting, so it can greatly steam copper, silicon steel sheets and other metal materials.
At the same time, the use of this starting method can also improve the starting performance, expand the scope of use, and overcome the defect that the original compensator does not allow frequent starting. It is not only smaller in volume and lighter than compensators of the same capacity, but also convenient for complete equipment and user-made, achieving reliable operation, convenient maintenance, and energy saving and effective purposes.
----- Responsible Editor: Dalan Oil Pump Motor 02-Procurement Consultant
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