Oops 440v Into a 220v Century 160 MIG - Now What? - 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> Garage - Tools
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 12-18-2012, 05:39 PM
sparkydog's Avatar
Spa Mercenary
 

Last journal entry: Updates July 2012
Last photo:
Join Date: Nov 2009
Location: Fallbrook, CA
Posts: 98
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Oops 440v Into a 220v Century 160 MIG - Now What?

Long story short. I took a new-to-me Century 160 MIG welder and wired it up to a 1phase 440v supply. (Not intentionally.) Flicked on the power switch and got a loud bang in about 4 seconds. The short tripped the supply breaker. I did not use the trigger on the gun.

Opened up the unit and the control transformer (aka the "Drive Transformer") primary winding is clearly blown and melted. No other obvious damage that I can see. I tried calling the Century tech support line a few times but no human contact. I got creative and called my local Lincoln repair facility and they tell me that sometimes the only thing that blows is this transformer and other times it takes out more stuff - such as the controller board downstream of the transformer.

I have removed the damaged control transformer and have deduced that the specs for it (off the Century parts list) are 230VAC in 24VAC out 6amp rating. I have ordered a 240vac to 24vac 150 VA transformer from automation direct and intend to quickly hook it up, apply correct supply voltage (208 in my case) and see if it works and that nothing else seems to be inop. If so then I will permanently mount the new control transformer and move on.

Is there anything else I should be aware of or think about? Thanks for reading and I appreciate any advice you guys might have.

Sparky.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 12-18-2012, 06:29 PM
Shelby1's Avatar
Steel Dreams
 
Last photo:
Join Date: Nov 2006
Location: Lillian,AL
Age: 69
Posts: 317
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
sparky when a transformer has the wrong voltage applied to the primary it will still induce a voltage in the secondary before it blows/shorts out etc.,the next thing in line ( most times ) is the rectifier diodes and filter caps, if any thing else is going to be blown it should be them, and that should protect the main board......hopefully
Good Luck !
Kenny
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 12-18-2012, 06:59 PM
BOBCRMAN@aol.com's Avatar
Member
 
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,130
Wiki Edits: 0

Thanks: 25
Thanked 267 Times in 250 Posts
One of my kids did same to a Lincoln Mig. Not so lucky. Got transformer, circuit board and even the cooling fan!
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 12-19-2012, 12:19 PM
sparkydog's Avatar
Spa Mercenary
 

Last journal entry: Updates July 2012
Last photo:
Join Date: Nov 2009
Location: Fallbrook, CA
Posts: 98
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by Shelby1 View Post
sparky when a transformer has the wrong voltage applied to the primary it will still induce a voltage in the secondary before it blows/shorts out etc.,the next thing in line ( most times ) is the rectifier diodes and filter caps, if any thing else is going to be blown it should be them, and that should protect the main board......hopefully
Good Luck !
Kenny
The big capacitors "look" OK and the diode bridge on the wire feed control board seems OK too. No burned traces or any other evidence of trauma. Keeping my fingers crossed and waiting for the new control transformer to arrive.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 12-21-2012, 08:25 AM
sparkydog's Avatar
Spa Mercenary
 

Last journal entry: Updates July 2012
Last photo:
Join Date: Nov 2009
Location: Fallbrook, CA
Posts: 98
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Whew I got lucky. New control transformer is in and everything works OK!
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 12-22-2012, 06:39 PM
Shelby1's Avatar
Steel Dreams
 
Last photo:
Join Date: Nov 2006
Location: Lillian,AL
Age: 69
Posts: 317
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by sparkydog View Post
Whew I got lucky. New control transformer is in and everything works OK!
Outstanding !!!!
Kenny
Reply With Quote Quick reply to this message

Recent Garage - Tools 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
century 160 welder control board trouble ulrtrawide Garage - Tools 5 12-20-2012 07:25 PM
Checking 220V Outlet daveh Garage - Tools 13 02-19-2011 08:05 PM
what type of 220v mig has stitch weld feature? 37ford4dr Garage - Tools 6 10-12-2006 02:57 PM
Century 160 MIG Welder Phrank Garage - Tools 5 11-30-2004 05:08 PM
220v mig welder extension cord? fatherandson53 Garage - Tools 36 01-18-2004 10:51 AM


All times are GMT -6. The time now is 03:42 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.