Voltage increase

[R Kraft]

It looks like it is hooked up properly.
Robert

 

[Weldingartisan]

No you would not require 3 phase, it's a single phase machine but using a step up TX from your supply would be the same as using the 240v connection in the machine which in effect has it's own step up TX built in. You would be drawing the same current from your 240v supply either way. W/A

 

[Frank]

Okay, thanks for that.

 

[Barking Mat]

Hiya, my Oxford 180, at full power seems happiest with 3.2 rods, although it is running on three phase. Have you tried a smaller rod?

 

[W.I.R.E.Ltd]

Hi guys had to join in. think few of you are getting a little confused about voltage and phases. most of these small mma sets use single phase but you will have several voltage tappings. ie on an oxford 180 you have 4 pins marked 0v 220v 380v and 440v. so in u.k you connect either neutral and live across 0 and 220 or a single phase of your three phase across 0 and 440.
machine output will be the same but input amperage will be halved. sorry if i went on a bit.

 

[Frank]

Hi Barking mat,
Interesting about using a smaller rod....would this penetrate right thru two 5mm plates butted together? The reason I bought the 180amp arc welder is because I intend building a trailer and I don't want to have to mess about gapping or grinding vee's on the joins or even having to weld both sides.

Regards, Frank.

 

[the snooper]

to use this machine on 380 / 440 you would connect it to 2 of the phases of a three phase outlet which would give you the increased voltage
in three phase power if you include a neutral connection into the equasion then each of the phases will be 240 volt when used with the neutral connection see the link below
http://genmakhirdavat.com/used-mach...hold-electricity-on-a-foreign-2-phase-network

the welder will have 2 primary coils in the transformer that will be run in parallel for 240 v and in series for 380 / 440 v
its the same principle for generators the alternator has 2 primary 110v coils run in parallel for 110 v and then switched in to series to produce 240 volt thats why you cant get 110 and 240 v at the same time from a generator

 

[W.I.R.E.Ltd]

quite true snooper . two phases across 0v and 440v . my mistake but it is late .

 

[the snooper]

it must be late none of the three phases are 0v they are all live individually at 240 v

 

[W.I.R.E.Ltd]

think you misunderstood me. you are correct that inbetween each phase you got 415v, and between each phase an earth you got 240v.
i was saying that on an oxford 180 there are 4 terminal posts . 0v 220v 380v 440v and it cant be connected to three phases.
only single or two phases.
maybe i explained the point badly.

 

[the snooper]

yes you made your point alot better that time agree completely with you
the picture i have added may help some understand how this thing is wired its a bit basic but demonstrates how the welder can operate on both voltages (if the picture appears correct)