西门子 变频器 6SE6430-2AD31-8DA0 原装进口

详情描述：

       电动机使用变频器的作用就是为了调速，并降低启动电流。为了产生可变的电压和频率，该设备首先要把电源的交流电变换为直流电（DC），这个过程叫整流。把直流电（DC）变换为交流电（AC）的装置，其科学术语为“inverter”(逆变器)。一般逆变器是把直流电源逆变为一定的固定频率和一定电压的逆变电源。对于逆变为频率可调、电压可调的逆变器我们称为变频器。变频器输出的波形是模拟正弦波，主要是用在三相异步电动机调速用，又叫变频调速器。对于主要用在仪器仪表的检测设备中的波形要求较高的可变频率逆变器，要对波形进行整理，可以输出标准的正弦波，叫变频电源。一般变频电源是变频器价格的15－－20倍。由于变频器设备中产生变化的电压或频率的主要装置叫“inverter”，故该产品本身就被命名为“inverter”，即：变频器。
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