The common commerical frequency voltage test apparatus are divided into two categories, namely the traditional stepup transformer system and series resonance system.
常见的工频耐压设备大致可分为两类：传统的升压变压器系统和串联谐振系统。
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The method can both speed up positioning and ensure the positioning precision, and in addition, it provides solutions for the resonance vibration which occurs in the operation of the step-servo motor.