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 Post subject: Downstream of VFD
PostPosted: Thu Oct 14, 2010 3:20 pm 
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Joined: Wed May 07, 2008 5:00 pm
Posts: 823
Location: Rutland, VT
Hello,

I was curious to see how other people are handling equipment downstream of VFD's. I don't have much experience with VFD's but I would think that due to the nature of a VFD it would not support much of an arc due to rapid circuitry response.

Thoughts/comments/discussion?

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Barry Donovan, P.E.
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PostPosted: Fri Oct 15, 2010 10:20 am 
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Joined: Wed Jan 28, 2009 2:19 pm
Posts: 72
Location: Georgia
I handle disconnects downstream of VFD's the same way as I handle them if there were no VFD installed. The VFD makes no impact on my study of downstream equipment. Most VFD's are non-regen and will not allow current from the motor to pass backward to the supplying bus.


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