功率和功率因数
- 功率、电能和功率因数在测量仪的电压和电流输入测得的样本测量结果提供用于计算功率和功率因数的数据。
- 电流相角与电压相角的偏移电流可能会滞后、超前、或与交流电压波形同相，通常与负载类型有关 – 电感负载、电容负载或阻性负载。
- 真实功率、无功功率和视在功率
(PQS)典型的交流电力系统负荷均具有阻性负载组件和无功（电感或电容）组件。
- 功率因数 (PF)功率因数 (PF) 是真实功率 (P) 与视在功率 (S) 之比。
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