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A power factor (pf) meter measures the power factor of an electrical system, which is the ratio of real power (measured in watts) to apparent power (measured in volt-amperes). The meter operates by detecting the phase difference between voltage and current waveforms; a phase shift indicates the presence of reactive power. By calculating the cosine of this phase angle, the meter provides a direct reading of the power factor, helping to assess the efficiency of electrical systems and identify potential issues related to power quality.

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1mo ago

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