2711P-T12C10D2

2711P-T12C10D2

2711P-T12C10D2 

变频器是调速设备，并不具备节电的功能。相反，无论是变频器自身功耗，还是输入端整流造成的电流畸变，又或是输出端对电机损耗的增加，都说明变频器是耗电设备。

变频器带负载要节电的前提是负载能降低转速，单独依靠定频降压提高功率因数不但不经济更需要大马拉小车的工况才有一点用处。

从一些电工师傅那里听说变频器能省电，但一直没弄懂变频器为什么能省电，同时又能省多少，是高频省的多还是低频省的多？

2711P-T12C10D2 

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