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                  夏季停电你准备好了吗?

                  浏览数量: 0     作者: 本站编辑     发布时间: 2020-11-19      来源: 本站

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                  功率因数是能源效率的体现。它通常以百分比表示,百分比越低,电力使用效率越低。


                  功率因数 (PF) 是工作功率(以千瓦 (kW) 为单位)与视在功率(以千伏安 (kVA) 为单位)的比率。视在功率,也称为需求,是在一定时期内用于运行机械和设备的功率量的度量。通过乘以 (kVA = V x A) 即可得出。结果以 kVA 单位表示。


                  PF 表示电路中使用的有功功率与传递到电路的视在功率之比。 96% 的功率因数比 75% 的功率因数表现出更高的效率。在许多地区,PF 低于 95% 被认为是低效的。

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