西门子 变频器 6SE6420-2UC12-5AA1 勇于创新

详情描述：

变频不是到处可以省电，有不少场合用变频并不一定能省电。 作为电子电路，变频器本身也要耗电（约额定功率的3-5%）。一台1.5匹的空调自身耗电算下来也有20-30W,相当于一盏长明灯. 变频器在工频下运行，具有节电功能，是事实。但是他的前提条件是：
大功率并且为风机/泵类负载；
装置本身具有节电功能（软件支持）；
长期连续运行。
这是体现节电效果的三个条件。除此之外，无所谓节不节电，没有什么意义。如果不加前提条件的说变频器工频运行节能，就是夸大或是商业炒作。知道了原委，你会巧妙的利用他为你服务。一定要注意使用场合和使用条件才好正确应用，否则就是盲从、轻信而“受骗上当”。
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