Q: What are some of the negative power quality impacts from voltage variances and transients on variable frequency drives (VFDs)? And, what are some recommended solutions to resolve this VFD site issue?
OUR EXPERT | Paul Wright, P.Eng, engineered drive solutions manager, Electrical Controls Manufacturing (Edmonton) Inc.
A: The supply voltage from the utility grid should be sinusoidal with almost no signs of distortion as shown in waveform A in Figure 1 (see image). However...
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Grounding and Bonding are the least understood, the most misinterpreted and confusing elements in modern electrical and electronic systems and leads to poor design and installation work — especially as it relates to the Canadian Electrical Code (CEC) and to the National Electrical Code (NEC)...
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