460 volt welder in a home

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  #1  
Old 10-25-15, 07:06 PM
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460 volt welder in a home

Hello.

I am trying to correct a mistake I made by purchasing a 460/575/1/60 welder. I was under the impression from the seller that the welder was currently wired up at the plug for 460 and I asked her several times for that information and she wasn't able to provide me with it. So I bought the machine, spent the money on getting a 50 amp switch put in my fuse box as well as 30' of 6/3 wire. It wasn't until I had everything hooked up and tried to strike arc when I looked into the cover of the welder to find out its a 3 phase machine. My question is there a way for me to step up the voltage to 460 as well as get my single phase to 3 phase with out killing the bank?
 
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Old 10-25-15, 07:29 PM
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Welcome to the forums.

You need 460v/50a?/3 phase in your residence.

There is no cost effective way to increase the voltage at that amperage and then convert to three phase. Can it be returned ? If not.... you'll need to resell it.
 
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Old 10-25-15, 07:32 PM
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Best would be to sell it and buy one that will work on single phase 240 but if you will post the make and model number it may be possible to reconnect the winding for single phase 240. If it has a 3 phase cooling fan or wire feed though things get more complicated.

Tech note: You put fuses in a fuse box not switches. You put breakers in a breaker box. You need 6-2 wire not 6-3 for single phase.
 
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Old 10-25-15, 07:58 PM
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You could look at American Rotary phase converters. Their AR30 converts 240 single phase to 480 3 phase and is rated for about 40 amps in welder applications. Cost looks like 2-3K$ depending on options.

An electromechanical phase converter is likely the cheapest way to do what you want.
 
  #5  
Old 10-25-15, 08:19 PM
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Yeah I had a brain fart when it came to the technical terms. I put a 50 amp breaker in my breaker box using 6/2 wire for the 3 prong plug. The 6/3 wire was going to be used as a drop cord for the welder. The welder itself is a lincoln square wave 175 tig that is also a stick welder. It's a 460/575/1/60 welder. The wiring diagram is at this website with the model number 10387

http://www.lincolnelectric.com/en-us...Wave&type=text

I've listed back for sell on Craigslist and I'm hoping I'll be able to move it and get my money back out of it. If it can be rewired to work on 240 I'm game.
 
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Old 10-25-15, 10:22 PM
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460/575/1/60
That means 460v/575v/1 phase/60hz.

Thanks for posting the manual. That unit has a nameplate rating of 27amps and requires circuit protection of 50amps to cover peak load at 460v. It is a single phase unit..... not three phase.

However, there are two separate models.... a 240v model and a 460v model and you cannot re-tap the 460v transformer for 240v.

You could use a 240v x 480v 25Kva transformer to do what you need. I was looking on eBay and I see them for around $300.00. Biggest problem outside of the additional cost is having something like that shipped unless you could locate one locally. That transformer would need to be connected to the panel with a 2P100A breaker.

Square D Style Cat 25S3H 25KVA Single Phase Transformer | eBay
 
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Old 10-26-15, 01:40 PM
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Thanks for the help fellas. It's moments like this when I wish I had paid closer attention to things in high school. Then maybe I might have seen the problem from the beginning and not be in the situation I'm in now. I think right now my solution is going to be try and sell this thing an make a profit or get my money back.
 
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Old 10-26-15, 06:20 PM
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I was under the impression from the seller that the welder was currently wired up at the plug for 460
How did you think you could ever use a 460 volt welder at home?
 
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