Delta Connexió Motor

Títol

Delta Connexió Motor

Breu Introducció

It can be seen that the voltages of the △ and Y-shaped connection methods are 220V and 380V, respectivament, and there is another commonly used motor with △ and Y-shaped connection methods, that have voltages of 380V and 660V, respectivament; The voltage of the Y-shaped connection method is three times the root sign of the voltage of the △ connection method. The power of these two connection methods is the same, P=UI, because the voltage of the △ connection method is small, the current of the △ connection method is large, and similarly, the current of the Y-shaped connection method is small; So in engineering, the Y-shaped connection method is sovint used because the current of the Y-shaped connection method is is small. Quan seleccionant cables, els cables can be finner, que can estalviar algun diners i és més econòmic.
Someone has a question, can the voltage of these two connection methods be reversed? Why are the voltages of the two connection methods different? The answer is that it cannot be reversed, which is determined by the internal winding of the motor. After a certain motor is manufactured, the voltage and current that its winding can withstand are also determined. Taking the nameplate above as an example, the voltage that the winding of this motor can withstand for a long time during normal operation is 220V, When using the △ connection method, the line voltage is equal to the phase voltage (PS: When the voltage and current mentioned in three-phase equipment are not specified, they are default to the line value, that is, the 220V and 380V on the nameplate are both line voltages. Regarding what is line voltage and phase voltage, and their relationship, we will explain them in later articles, pay attention to not getting lost), so the voltage of each phase winding is 220V; When using the Y-shaped connection method, the line voltage is equal to three times the phase voltage of the root sign, so the voltage of each phase winding is 380 divided by the root sign three, which is also 220V; So it cannot be reversed.
El conseqüències de revers connexió connexió: Primerament, quan el △ connexió mètode és utilitzat a connectar 380V, it és equivalent a sobretensió de el motor, excedint el voltatge borne per el bobinatge, que maig causa aïllament avaria de el motor bobinatge i motor burnout; Secondly, quan el Y-shaped connection is 220V, it is equivalent a undervoltage of the motor. When the load carried by the motor roman inalterat, it és equivalent a constant potència. però, as el voltatge disminueix, el corrent augments, que can causa el motor a sobreescalfament i fins i tot cremada fora. Això explica per què it no pot ser invertit.

Principal Tècnic Paràmetres

Esquema Dimensions

Motor Paràmetres

Aplicacions

The YE3 Series LV Motor is commonly used to drive water pumps, compressors, conveyors and other transmission machinery in different areas.

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