The voltage effective value was figured out by mean square.

再通过其均方计算出电压有效值。

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GPS-based phasor measurement unit (PMU) can measure the voltage phasor directly, including the effective value and phase Angle.

基于GPS的相量测量装置(PMU)可以直接测得节点电压相量，包括电压有效值和相角。

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The tester designed can be used to measure the parameters, such as power factor, effective value of voltage and current, instantaneous value, etc.

所设计的电网参数测试仪可以测量功率因数、电压和电流的有效值、瞬时值等参数。

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