Ac asynchronous motor under the rated voltage starting, the initial starting current is big, often more than many times the rated current (usually 5-7 times), in order to lose Less starting current, not to affect the grid, often start with a lower voltage method of ac asynchronous motor, commonly used an tihy pertensive method is a reactor or from the lotus rhizome Transformer, ac motor starting process is very short (generally several seconds to 2 minutes), will step down after starting up the use of the reactor and the lotus root transformer. The production Product is based on high voltage asynchronous motor start the design features, general matching motor power 220-4800 - kw.