3 phase and 1 phase - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Electrical
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 02-04-2009, 06:11 PM
awert's Avatar
58/58
 
Last photo:
Join Date: Feb 2007
Location: mn.
Posts: 196
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
3 phase and 1 phase

could somebody tell me the difference between 3 & 1 phase in a inverter type welder? I under stand 3 phase and it's relationship to electric motors, but welders???? Reason i ask is because i have a great opportunity to get the inverter i want, "cheap" but it's 3 phase, and i know all about rotary/static converters,or VFD, i built one. I don't want to go that rout. I want to change the guts of the welder to run on 220 1 phase. as you may or may not know, some welders come from the factory as 3 or 1 phase, just switch wires around and that's it. I know there is no difference in the electronics/ PCB. so what is different?

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 02-04-2009, 06:36 PM
1947 Chevy Coupe
 
Last photo:
Join Date: Jun 2008
Location: Las Vegas
Posts: 208
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I'm guessing it's just the input transformer and having six SCR's instead of four. I fixed a few welders about 23 or so years ago and this is all I think I remember.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 02-04-2009, 09:05 PM
Rustydawg's Avatar
Cruzin w/Elvis in Bigfoots UFO
 
Last photo:
Join Date: Nov 2004
Location: Edmonton AB, Great White North
Age: 48
Posts: 248
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
I helped myself to an image from http://islandcastaway.com/stuff/wind...%20Secrets.htm

here's a picture that shows DC, rectified single-phase AC and rectified 3-phase - you can see that you would get a more steady arc from the rectified 3-phase.
Attached Thumbnails
Click image for larger version

Name:	3phase.gif
Views:	79
Size:	3.5 KB
ID:	36109  
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 02-05-2009, 07:41 AM
Registered User
 
Join Date: Aug 2007
Location: Sterling Heights, Michigan
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
See if the mfg. has a web site and go there to find out about the machine your looking at. Many times they will list all the options and features of what they sell or have made in the past.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 02-06-2009, 01:15 PM
awert's Avatar
58/58
 
Last photo:
Join Date: Feb 2007
Location: mn.
Posts: 196
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
3 phase and 1 phase

I was at the Lincoln site before i asked the question, there answer was "Not practical to change it" Well it is to me, about $1000 bucks worth........I'm also thinking it is only a transformer swap. a schematic gives the tap Voltage, so it's just a mater of finding the Tf. to fit, and of course the right taps.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 02-06-2009, 01:28 PM
Registered User
 
Join Date: Aug 2007
Location: Sterling Heights, Michigan
Posts: 242
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
What you need is the print from the welder you are buying and the print from the same model in single phase. Then you can compare the two, many times the part numbers are there to help you along.

Can you buy this welder and trade it in on the model you want?
Good Luck
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 11:47 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.