VFD as a Phase Converter

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Ace Boeringa Guru Join Date: Mar 2006 Location: Washington USA Posts: 566 Good Answers: 53	VFD as a Phase Converter 08/03/2011 3:45 PM
	Can a VFD be supplied by 240VAC single phase power to operate a 1 HP 240VAC three phase inverter duty motor?
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Ace Boeringa Guru Join Date: Mar 2006 Location: Washington USA Posts: 566 Good Answers: 53	#1 Re: VFD as a Phase converter 08/03/2011 4:18 PM
	Sorry Continued my search and found the answers in a previous post. nevermind
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Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#3 Re: VFD as a Phase converter 08/03/2011 4:49 PM
	Yes. (If only to convey at least a little info.) __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
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JRaef Guru Join Date: Sep 2006 Location: California, USA, where the Godless live next door to God. Posts: 4665 Good Answers: 804	#4 Re: VFD as a Phase Converter 08/04/2011 6:44 PM
	Can, yes. Will, not all. Some mfrs use Phase Loss protection that cannot be defeated in programming, rendering them useless in this application. You have to check. __________________ All I every really wanted to be, was... A LUMBERJACK!.
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Ace Boeringa Guru Join Date: Mar 2006 Location: Washington USA Posts: 566 Good Answers: 53	#5 In reply to #4 Re: VFD as a Phase Converter 08/04/2011 8:09 PM
	This is new and valuable information to me, GA! Thanks!
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leveles Guru Join Date: Jan 2008 Posts: 1753 Good Answers: 59	#6 Re: VFD as a Phase Converter 08/04/2011 10:40 PM
	Electronic way it is getting expensive in a great hurry. The problem is that any single phase has 0Volt transitions, where voltage collapses on whatever it drives. If you try to size capacitors to bridge that for VFD, they become huge and expensive for low frequencies at significant power. UPS with batteries? Same. But sometimes old technology is the best: rotary 1 phase to 3 phase converter. Applied KISS principle, reliable, inexpensive. My ENCO catalogue: www.use-enco.com for example has it for $429 for 1 HP, $645 for 5HP in a great lineup. Having reliable 3 phase you are home free for VFD or any such thing requiring steady power! Talk to them: 800-USE-ENCO. Let them size it.
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