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Three phase power went through our single phase butters mig. no fan or torch now

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Hi:

Sorry to say this but feeding 3 phase current to a single phase machine will fry the PC board.

You will need to send the machine to your nearest welding/maintenace shop.

Posted on May 23, 2011

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1 Answer

I have a Miller CST 280, do I just drop a phase to run it 220 1 phase


If you have 3 phase power, it wont work unless you have a convertor to convert it to single phase

Dec 29, 2016 | Miller Welding Tools

1 Answer

We had a Delta vfd037b23a running a fan (we only use it to change the speed) and it was 3 phase input and only drawing 7.5 amps (max is 17). We have moved and no longer have 3 phase line power, we do have...


To cut down on power usage, look into either purchasing or trading for a smaller three phase inverter.


Or the best choice for you is to get a VFD that runs off either single or three phase so that you can move it about at will (to single or three phase set ups).


As for hurting the VFD by using it in the overpowered but underused mode, not likely.

Oct 29, 2012 | Delta Vfd037b23a Ac Drive Vfd B Inverter...

1 Answer

1993 KD15 series miller delta weld 300 can it be hooked up to 220 single phase


Theoretically yes, but it would be a great deal of work and would draw a little over 6 times the current it did when on three phase power.

It would entail replacing the fan motors, connecting the 6 windings of the 3 phase primary in phase and in parallel. Plus adding a 115 circuit " tapping off half of the 220 single phase" incoming power for some aspects.

The control board would also need modifications as well. because it uses 3 current sense transformers and you would need to rework that circuit to compensate.

The short answer if you were wanting to set one up for home use- just invest in a "Sidekick" They did have a 240 volt single phase version, and if you consider the time invested to change something over that could trip the 200 amp service breaker, if you value your time- the money for a Sidekick would be well worth it.

If you want proof- open up the primary side of the Deltaweld and look at all of those connections you have before you- you would not be using 1/3 of them, and you would need to take the time to make sure the 6 windings were in phase otherise the transformer burns out- it may burn out anyway because the current draw increase beacause all the low impedance windings are now in parallel on a nominally lower voltage- just the potential of fire from that arrangement makes the money spent for a Sidekick to be considered "cheap insurance."

Mar 29, 2012 | Miller Welding Tools

1 Answer

I just need to know what my sp250 idlearc lincoln mig welder is single phase or three phase, my gurage has three phase running in how do i wire in ,if single phase


Hi:

Your Machine is single phase, and it could be a 208/230V or a 230/460/575V depending on the model. Check what kind of voltage do you have at your garage first, before attempting to do the following:

On a three phase wiring you will have 4 wires with the following colors; green, red, white and black. If you have 208/220/230 volts available at your garage you can connect the green, white and black wires, always green being the ground cable in the middle, black and white don't matter which side you screw them in.

Before attempting to connect a 480V to the machine check machine's plaque information in the front (or back) for real voltage, because this voltage can burn the PC board of you machine. The same color sequence applies to the 480V.

Good luck.

If this was useful to you, please vote.

Mar 19, 2011 | Welding Tools

1 Answer

I bought an older syncrowave 250 i dont know where the torch is connected and there it doest spark


Torch goes to ground side where gas will flow out of it. Use a tig torch 17 if water cooling is not needed or a size 20 for water cooled one.

Dec 01, 2010 | Miller Electric Mfg Co 907314 Shopmate 300...

2 Answers

Taking my P660 out out a building with 3 phase power and into one with only single phase. Converter says motor will run on 2/3 power. Good or bad idea????


Good!

MOTOR:

21?2 H.P., Hobart designed, high torque ball bearing,

ventilated within mixer enclosure. Single-phase is

capacitor-start, induction-run type.


Three-phase is

polyphase squirrel cage, induction-run type.


Single Phase 208V 20.0 Amps

240V 17.0 Amps


Three Phase 208-240V 8.6 Amps

Nov 26, 2010 | Hobart P660 Stand Mixer

1 Answer

How can i get single phase power from my 3 phase generator


I have not wire this myself
Wiki says under heading of single-phase:
http://en.wikipedia.org/wiki/Three-phase_electric_power
Single-phase loads may be connected to a three-phase system in two ways. A load may be connected across two of the three phase conductors or a load can be connected from a live phase conductor to the system neutral. Single-phase loads should be distributed evenly between the phases of the three-phase system for efficient use of the supply transformer and supply conductors. Where the line-to-neutral voltage is a standard utilization voltage (for example in a 230 V/400 V system), individual single-phase utility customers or loads may each be connected to a different phase of the supply. Where the line-to-neutral voltage is not a common utilization voltage, for example in a 347/600 V system, single-phase loads must be supplied by individual step-down transformers.

So it sounds like you take 2 legs of the 3-phase.
or
Take one leg of the 3-phase and connect to neutral ... neutral could be a ground rod.

I would put a meter on that circuit before hooking up my power saw.

Nov 17, 2010 | Electrical Supplies

1 Answer

I have a miller cp 300. It is wired for 3 phase power. I need to hook it up to 230 volt power. How do I do this correctly.


You cannot do this... 3 phase and single phase cannot be inter used... see 3 phase is 440 V AC, single phase is 230 Vots AC. This is unless the unit has Dual capability, in this case the wiring could only be wired to a Single Phase. of the unit. You will need a slow blow breaker of the correct rating and also the cable must be similarly CURRENT rated. If it IS only 3 phase, you can purchase after market single phase to 3 phase converters, that will allow you to plug the 3 phase into a single phase circuit and work, they quite costly though.

Mar 22, 2010 | Welding Tools

2 Answers

Can I change model 754 machine from three phase to single phase by just replaceing the three phase motors with single phase motors?


no you cannot. The cost to replace the dasher motor and compressor would be extreme. In addition, you would need to convert the controls from 3 phase controls over to single phase controls.

Those machines are designed for 3 phase power. If you could get the same components in a single phase version, you would spend more money economically than its worth.

Take the money you would spend converting and purchase a single phase countertop unit. They are made.

Feb 11, 2010 | Taylor 632-27 Ice Cream Maker

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