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  1. #1
    Join Date
    Apr 2012
    Posts
    1

    Default Delta 450 phase conversion

    Can the Deltaweld 450 be converted to a single phase machine? We have a rotary phase converter,but everyone has said they dont weld well off a converter. thanks for anyhelp.

  2. #2
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,742

    Default

    Simply NOT happening

  3. #3
    Join Date
    Dec 2011
    Posts
    392

    Default

    Deltaweld 450 is 3 phase only. Checkout the manual on this site for that machine. Input current is 81 amps @ 200v to 28 amps @ 575volts. I'm pretty sure your phase convertor is not even remotely close to being up to that job. So yeah, what Cruizer said "Simply NOT happening "
    Go to plan "B"
    Good luck---Meltedmetal

  4. #4
    Join Date
    Feb 2010
    Location
    YOUNGSTOWN, OHIO
    Posts
    172

    Default

    Quote Originally Posted by cruizer View Post
    Simply NOT happening
    Cruizer,
    just curious as to why not. Is it that the phase converter puts out "dirty" power and the deltaweld will not run properly???
    If it is just a supply issue as far as enough power, it is fairly simple to find a 30 HP 575V 3 phase motor to use for conversion.
    I plan on making a converter to run a dimension or deltaweld and am curiuos before I waste time and money
    JIM

    Owner Operator of JNT Mobile Welding & Repair LLC
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  5. #5
    Join Date
    Dec 2011
    Posts
    392

    Default

    Quote Originally Posted by jpence38 View Post

    If it is just a supply issue as far as enough power, it is fairly simple to find a 30 HP 575V 3 phase motor to use for conversion.
    True enough Jim but how easy is it to find a 50 HP single phase motor to drive it? And what kind of single phase entrance do you have to run it?
    Meltedmetal

  6. #6
    Join Date
    Oct 2004
    Location
    Edmonton, Alberta
    Posts
    7,742

    Default

    The problem is with the circuit boards which pulls synchronized voltages off the transformers to fire the SCRS in the rectifier. All 3 of the phases must be in perfect syncronization with each other, or you'll poof the main board, and likely a set of secondary transformers.

    Plus they need a maintained 60hz to properly run. when loaded the rotary ones tend to bog down, thus no 60HZ, may drop down to 40 or 50 hz, which will fry everything.

    The only unit you may be able to get away with is a Miller SRH stick machine on a rotary, Even then if you bog down, you'll fry your primary transformer.

    To get away from this you'd need a rather large converter/motor that will handle the load.

    A high powered $$$ digital converter might be a better bet, though there are alot of great single phase machines around that might betterserve your purpose.

  7. #7
    Join Date
    Feb 2010
    Location
    YOUNGSTOWN, OHIO
    Posts
    172

    Default

    Thanks for the info. Glad I found out beforehand. The reason I was thinking of going with the 3 ph. is that I can get practically new machines for next to nothin'. Looks like I will just stick with the 1 ph.
    JIM

    Owner Operator of JNT Mobile Welding & Repair LLC
    Millermatic 350P Aluma Pro
    Dynasty 200DX
    Maxstar 150 STL
    Trailblazer 302
    Suitecase 12RC
    Extreme 12VS
    Extreme 8VS
    Spoolmatic 30A
    Miller HF251D-1
    Passport Plus
    Spoolmate 100
    Hypertherm Powermax 45 and 85
    Ingersoll Rand Engine Driven Compressor
    Dake 75 ton H-Frame Press
    JD Squared Model 32 Bender
    Miller Digital Elite

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