Electric Motor Voltage Questions

S

Scott R

Hot Rolled

Joined

Jul 8, 2005

Location

NE Ohio

• Jul 27, 2008

• #1

I need to replace a motor on my Marvel saw. Whats there now is a Lincoln totally enclosed 2hp 208/230/460 volt 145T frame motor. I found this on ebay but it's only for 200 volts. I have power Co. supplied 3 phase, 2 legs are 118volt and the wild leg is 211 this was measured legs to ground, Voltage measured between legs runs 236-241 volts. Question is can I use this motor?

http://cgi.ebay.com/Baldor-Super-E-...ryZ26226QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

 

Attachments

• 
  cdocumentsandsettingsexcessmydocumentsmypicturesebayelectricmotorsefm3157t-8image2.jpg

  73.2 KB · Views: 68

kevin johnson

Cast Iron

Joined

Feb 14, 2008

Location

lone jack mo

• Jul 27, 2008

• #2

According to the manual posted on listing, voltage must be with in + - 10%. Your high leg b service would be above this range. Good price though.

 

JunkyardJ

Titanium

Joined

Oct 30, 2007

Location

Howell Mi

• Jul 27, 2008

• #3

I wouldn't try it.

It might be OK, but it says usable @ 208v. It's designed for japanese 200v power, and other foreign countries. I'd hold off for another motor, there will be a proper motor designed for use in the US eventually. Here's a nice motor, brand new, same frame, should work. Little more $$$.

http://www.surpluscenter.com/item.asp?UID=2008072715422242&item=10-2394&catname=electric

 

peterh5322

Diamond

Joined

Dec 15, 2002

Location

Monterey Bay, California

• Jul 27, 2008

• #4

A 200 volt motor is a special motor intended only for use in Japan.

Motors intended for use in North America are desiged for 208-240/480 volts.

In order to safely operate that 200 volt motor on North America power, you would at least require a buck/boost transformer, wired in buck mode, to reduce the motor's voltage to 200.

 

S

Scott R

Hot Rolled

Joined

Jul 8, 2005

Location

NE Ohio

• Jul 27, 2008

• #5

Thanks for the link Junkyard.
I figured the ebay motor might not work. Is the stuff from Surplus Center Chinese made? If so I'd rather spend the $ and buy a USA brand.


http://cgi.ebay.com/Dayton-2HP-3Pha...ryZ26226QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

This might be a better deal.

 

JunkyardJ

Titanium

Joined

Oct 30, 2007

Location

Howell Mi

• Jul 27, 2008

• #6

That $200 motor is nice.

That's an expensive motor, but it's nice. The world wide electric motors are "imports" which probably means made in china or mexico. Who knows, they're not USA made though. I dunno if dayton motors are either anymore. I'd get the worldwide electric motor if it were me.

 

M

macplus

Cast Iron

Joined

Jan 12, 2008

Location

wny

• Jul 27, 2008

• #7

I agree with Peter, the transformer would be the way to go. If you want to replace the motor, try to find one that is just rated at 208vac ( like this Ebay motor, item# 370068029540 ).

 

R

RMeyers

Aluminum

Joined

Jul 16, 2007

Location

Chico, Ca

• Jul 27, 2008

• #8

200 volts is the NEMA voltage rating for 208 volts, it is fairly recent that 200V was used instead of 208V (10-15 years).



Standard US supplied voltages are 120,208,240,277,480.
"Rated" voltages are 115,200,230,265,460....

 

P

Pierce Butler

Hot Rolled

Joined

Jun 28, 2007

Location

Texas

• Jul 28, 2008

• #9

RMeyers said:

200 volts is the NEMA voltage rating for 208 volts, it is fairly recent that 200V was used instead of 208V (10-15 years).



Standard US supplied voltages are 120,208,240,277,480.
"Rated" voltages are 115,200,230,265,460....

Click to expand...

You are quite correct. Baldor states this quite clearly as well.