| 摘要 |
PROBLEM TO BE SOLVED: To determine a sort and an operation state of an electric apparatus in using from a current waveform independently of a sort of a power supply and a degree of power supply voltage distortion.SOLUTION: A method for measuring a waveform of a current flowing in a distribution line of a power consumer in order remove influence of power supply voltage distortion on characteristics of the current includes: a step for recording the waveform of the current flowing in the distribution line of the power consumer; a step for recording a waveform of voltage applied to the distribution line of the power consumer; a step for converting the recorded current waveform and the recorded voltage waveform into frequency characteristic areas; and a step for acquiring a current waveform which is corrected by multiplying the current waveform converted into the frequency characteristic area by an inverse of the voltage waveform converted into the frequency characteristic area. |
