SAIC MG350/360/550/750 Auto Parts Car Spare Starter -1.5T -10029939 Power System Auto Parts Leverandør Engros MG Katalog Billigere fabrikkpris.

Startmodus for starteren
Startmodus for tre-fase asynkron motor
1, direkte start. However, when the three-phase asynchronous motor starts directly, the current can reach 6-7 times the rated current, which has a large impact on the power grid, especially the high-power motor.
2, Redusert spenningsstart. Bukkestarten inkluderer hovedsakelig varm autoroot Buck Start og Star Triangle Buck -start.
Hot autobuck starting means that the motor voltage is reduced and the starting current is reduced at the same time when the autotransformer is started. Det reduseres generelt til omtrent 55% -75% av den nominelle spenningen. Fordelen er at startspenningen enkelt kan endres ved å endre antall kraner på autotransformatoren. Ulempen er behovet for å bruke autotransformatoren, kostnadene er større.
Star triangle step-down starting refers to a method of changing the starting voltage by changing the connection mode of the motor, so as to reduce the starting current, which can only be applied to the normal connection mode of the triangle connection of the motor. When starting, the relay method is used to make the motor wiring mode star-shaped, at this time, the voltage of each phase of the motor is reduced to one-third of the original root sign, the motor speed reaches about 80% of the rated speed, and the control relay changes the motor wiring mode to triangle, and the motor starts to operate normally. The advantage is that it can save the autotransformer, reduce the cost, and the wiring method is simple and the reliability is greater. Ulempen er at forholdet mellom startspenning ikke kan endres, og motoren kan ikke brukes i stjerneforbindelsen.
3, frekvensmotstandsstart. Frequency sensitive resistance starting means that the frequency sensitive resistance is connected in series in the main circuit when the motor is started, thereby reducing the starting current. Frekvensfølsom motstand kan endre startstrømmen jevnt og har mindre innvirkning på strømnettet, så det er en ideell startmodus. However, high-power frequency-sensitive resistors are in the form of inductors, so they will produce a large electromagnetic eddy current in use, which will reduce the power factor of the grid.