oil cooled set 3 or 1 phase ?

[sardine]

Been offered a big 3 phase oil cooled set for free, 3 or 400 amps, I'm wondering if they can all run off 1 phase at low amps output or will it be 3 phase only ? ( I don't want more than 200 amps. )

 

[WorkshopChris]

Most of the big oxfords had a 240v tapping but not all and there were other makes that were 3 phase only(420v - 2 legs of 3 phase supply)
Can you get a photo of the terminal box?

 

[The_Yellow_Ardvark]

Grab it, if it is no use to you. you could pass it on for some folding beer tokens and buy one.

But to see if can be ran on 240v, a detail picture of the connections and data plate.

 

[sardine]

The trouble is the thing is so blinkin heavy, its not an easy thing to salvage, my sensible brain cell says leave it, but my Steptoe cell says otherwise.

 

[Parm]

The trouble is the thing is so blinkin heavy, its not an easy thing to salvage, my sensible brain cell says leave it, but my Steptoe cell says otherwise.

Nothing to think about really, go and get it !!

 

[daleyd]

Steptoe cell

 

[Turbo]

Take it and if it's no use sell it. If it doesn't sell you could scrap it as it's full of copper!

 

[sardine]

Take it and if it's no use sell it. If it doesn't sell you could scrap it as it's full of copper!

Is there a market for monster 3 phase oil cooled sets ?

 

[The_Yellow_Ardvark]

@sardine
Do one legged ducks swim in circles, do bears..........

 

[sardine]

What about the hernia I get from trying to shift it ?

 

[The_Yellow_Ardvark]

Bend at the knees, load close to body......
Dam H&S kicks in again.

 

[sardine]

Went to check its still available, and they have pushed it onto a scrap pile upside down, all the oil is gone, but they are keeping it for me. Should be mine by the end of the week. I will split it into 3 loads, big tranny, small tranny, box. I unbolted the lid and its good inside but a load of rusty crud in the bottom of the tank, so it will need cleaning out anyway. There is a set of terminals inside with a bolt on solid link that look like you can change it from star to delta, just my guess though, I know zero about 3 phase.

 

[sardine]

Top of the picture is the link and terminals i mentioned.

 

[brightspark]

if that says 380 450 volts single phase it wont run on 240v . a lot of old motors on farms worked on 2 wire 415 volt and that's an old welder

 

[sardine]

if that says 380 450 volts single phase it wont run on 240v . a lot of old motors on farms worked on 2 wire 415 volt and that's an old welder

Is it a scrapper then ?

Or might it just be the same machine but wired differently internally ? I wonder what the link and terminals are at the top of the picture ?

 

[fixerupper]

looks like a big old bit of kit ...a place I worked at years ago had a massive Oxford ,it worked as smooth as a smooth thing on planet smooth .....Is there an elf 'n'safety issue about the oil in these oil cooled beasts and the PCBs..? ...jeff

 

[Parm]

looks like a big old bit of kit ...a place I worked at years ago had a massive Oxford ,it worked as smooth as a smooth thing on planet smooth .....Is there an elf 'n'safety issue about the oil in these oil cooled beasts and the PCBs..? ...jeff

Nothing a bit of common sense won't deal with, PCBs are hazard by skin contact primarily so use gloves that are impervious to oil

 

[Parm]

If you scrap it, keep the data plate, cleaned up they make good wall ornaments in the workshop

 

[normspanners]

It should still give 50v output at 240v in,though,and that is still enough volts to weld with,I would have thought.
But the copper in it, is worth a bunch.

 

[sardine]

Found this on the interweb..

In a previous life I was involved in the sales/installtion/servicing of a range of industrial welding equipment. Most of the larger oil cooled arc welders & AC/DC TIG's were like this. If they are connected by a BS4343 socket just connect across two phases & the earth as normal. Same if wired directly into a 3ph isolator. Some machines also have an input connector which you have to select the correct input voltage for the supply. I was for ever getting called out to supposedly faulty equipment which turned out to have been wired across a phase & neutral rather than across 2 phases!