Re: Grounding improvements after adding VFD?
Originally Posted by
sploo
I was referring to the original diagram more as context for the question, rather than a statement of correctness.
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Very few actually know what a ground loop is, it is a difference in potential that may exist on earth ground conductors or points of system ground at different points in the system.
Now in Industrial systems that mix low level and high level high frequency signals, it is advised to use something called equi-potential bonding.
This is use a dedicated conductor to ground bond each separate metallic parts of a system. Generally ending up at the earthed star ground point
If this is done properly, it virtually eliminates all chance of ground loops.
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