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Variable-frequency drive (VFD) current characteristic
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This video represents Primary and Secondary sides current behavior of VFD.
True-RMS Digital multimeter(DMM) will read about 20% higher output voltage than what actual Output voltage is.
The reason is that a standard True-RMS DMM cannot reliably filter out the PWM(Pulse Width Modulation of VFD)output waveform.
(Thanks to Mr. Roozbeh)
True-RMS Digital multimeter(DMM) will read about 20% higher output voltage than what actual Output voltage is.
The reason is that a standard True-RMS DMM cannot reliably filter out the PWM(Pulse Width Modulation of VFD)output waveform.
(Thanks to Mr. Roozbeh)
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