Dual Voltage Motor

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drajesh1985 Active Contributor Join Date: Feb 2008 Posts: 18	Dual Voltage Motor 02/01/2010 10:16 AM
	Can any one please clarify me how to make a power as well as control wiring for a dual voltage motor? recently i came across a motor whose voltage detail in name plate was 208-230/460 V and it was a 9lead dual voltage WYE Connection.
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: Dual Voltage motor 02/01/2010 11:22 AM
	What power rating is it? What else is on the plate? __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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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	#2 Re: Dual Voltage Motor 02/01/2010 11:50 AM
	You will need to know a little more about your, but here is a reference for all standard winding patterns used by motor mfrs. The 208-230V issue has only to do with the range. What they do is design it for 220V +- 10%, so that covers 200-240V systems. You will only have 2 connection patterns to deal with, but you will need to know if it is Y or Delta wound. The motor nameplate should tell you. __________________ All I every really wanted to be, was... A LUMBERJACK!.
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RDGRNR Guru Join Date: Dec 2009 Location: San Antonio, TX USA Posts: 844 Good Answers: 29	#3 Re: Dual Voltage Motor 02/01/2010 3:13 PM
	Here's a sample data tag. As was said, you need to know if your motor is wye or delta wound. If the tag on your motor looks like this you're in business. If not, let us know. Also low voltage is either the 208 or 230 and high is the 460. Be advised these are NEMA configurations. There may be differences if you're an IEC kind of guy. __________________ "Do not worry about your difficulties in Mathematics. I can assure you mine are still greater". - Albert Einstein
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drajesh1985 Active Contributor Join Date: Feb 2008 Posts: 18	#4 In reply to #3 Re: Dual Voltage Motor 02/01/2010 9:37 PM
	Dear RDGRNR, your comment is exactly right, but the thing is in low voltage terminals should i provide a 3 phase 208 - 230 V supply through transformer.
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RDGRNR Guru Join Date: Dec 2009 Location: San Antonio, TX USA Posts: 844 Good Answers: 29	#5 In reply to #4 Re: Dual Voltage Motor 02/02/2010 10:17 AM
	The motor is configured so that you can use either voltage. High or low. Strap the motor for the existing power at your facility. No need to go to the extra expense of obtaining a xfmr. I'm thinking you might want an electrician to check your work before you flip the switch. __________________ "Do not worry about your difficulties in Mathematics. I can assure you mine are still greater". - Albert Einstein
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drajesh1985 (1); JRaef (1); PWSlack (1); RDGRNR (2)

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