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ELC 117- VFD & Motor wired and programmed by Nathan Piercy and Luke Matthews
Автор: Durwood King
Загружено: 2021-03-17
Просмотров: 3728
Описание:
Shows comparison of Fluke 1587 multimeter with "low pass" filter and the Fluke Scopemeter. The 1587 gives true RMS readings of the 60 Hertz fundamental frequency because it filters or blocks the harmonics that are present in VFD outputs (pulse width modulated) The Scopemeter has wide bandwidth of 20 Mhz (megahertz)
so it calculates the harmonics. The Scope simply gives us the waveform vi
ew and correct frequency value. We get our correct voltage reading from the Fluke 1587.
Thanks for watching, Durwood King, Instructor, Sampson Community College
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