Its electric frequency, voltage, and current "are not sufficient to create health issues in a healthy person," Cademartiri said.

它的频率、电压及电流“不足以对健康的人造成健康问题，”Cademartiri解释说。

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Accurate and fast estimation of electric frequency is the basis of operation, control, and regulation of power system and electric equipments.

电频率快速、准确测量是电网及电气设备运行、控制、调节的基础。

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Backup generators are filthy, wasteful and prone to performance problems depending on the frequency and duration of electric grid outages.

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ABB's best trick is its ability to take electric current of any voltage and frequency, chop it up into tiny bits and reassemble it into the form needed.

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Phasor measurements track the amount of stress placed on the electric power grid by providing granular data about frequency, voltage and phase angle conditions in real-time.

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