Save energy analysis for a large capacity motor to start up

The startup current will be higher when extra large capacity motor starts up directly with full voltage,which can result in significant vibration of power grid voltage and has a bad effect on other devices connected in the same power grid.At present,the general method to isolate its effect is to set up an independent transformer supplying large capacity motor in actual engineering.However,it only solves the problem of power grid voltage vibration when the motor starts up.The high voltage motor soft startup device of switching transformer mode can handle it and save energy comparing it with independent transformer mode.