Which CUT50P.... aka which UK based eBay seller? Or suck it up and buy Stahlwerk...

[gaz1]

been looking further back

https://www.mig-welding.co.uk/forum/threads/drag-tips-or-normal-tips.77262/#post-1077446

 

[pondy]

Has anyone ever put a torch such as a Trafimet on one of these Chinese plasmas? If so did it cut any better or just the same?
Still struggling to work out how 50 Amps can really only cut 10mm at a push.

I swapped the generic Pt31 torch to a sg55 torch on my r tech 30 plasma after having alot of cutting quality issues and the difference was night and day. Quality was much better, cut slightly thicker steel faster and didn't eat consumables any more

 

[Tangledfeet]

I swapped the generic Pt31 torch to a sg55 torch on my r tech 30 plasma after having alot of cutting quality issues and the difference was night and day. Quality was much better, cut slightly thicker steel faster and didn't eat consumables any more

The torch that came with mine is an AG-60 / SG-55 torch; glad getting one made a positive difference!

Well... had another play this evening and working out what amps (Chinese one, obvs) I could get up to with the plasma running before the 16A breaker in the workshop tripped. I also tried charging the compressor fully and then turning it off at the wall to see if it kicking in midway through a cut a difference; turned out that it didn't seem to.

It seems that my CUT '50' is, with my 16A supply, actually a CUT 30; enough to cut 6mm mild steel without tripping the breaker - my torch technique the limiting factor on edge finish! Air regulator set to 5bar, and dragged the torch along a wooden edge - the cutting tip still fine after numerous cuts so @gaz1 inferred the 'spit-back' was gumming up the tip last night, not through lack of air pressure but through the clearance I'd created with the technique I was using.

I'd love to know what a much, much more expensive plasma cutter (Cebora, ESAB, Thermal Dydamics, Hypertherm, etc., etc.) can do from the same supply - I'm curious after @Memmeddu commented about voltages, etc. Guess it is the same as in most things in life, tools in particular.

Do I regret buying it and spending circa' £100 over an eBay plasma..? Dunno... I have the warranty should the need arise. One pays one's money and taketh one's choice...

 

[anto44]

My stahlwerk cut 50 will go to about 30 or 35 amps on the display on a 13 amp plug before the fuse blows, goes to 53 amps on the 16 amp plug and will sever cut 12mm no problem.

 

[Tangledfeet]

My stahlwerk cut 50 will go to about 30 or 35 amps on the display on a 13 amp plug before the fuse blows, goes to 53 amps on the 16 amp plug and will sever cut 12mm no problem.

I'm at a loss to explain why my experience is so different; out of curiosity I've just been out to plug mine in and see what it'll go up to on the 16A supply - 47A.

 

[Memmeddu]

The torch that came with mine is an AG-60 / SG-55 torch; glad getting one made a positive difference!

Well... had another play this evening and working out what amps (Chinese one, obvs) I could get up to with the plasma running before the 16A breaker in the workshop tripped. I also tried charging the compressor fully and then turning it off at the wall to see if it kicking in midway through a cut a difference; turned out that it didn't seem to.

It seems that my CUT '50' is, with my 16A supply, actually a CUT 30; enough to cut 6mm mild steel without tripping the breaker - my torch technique the limiting factor on edge finish! Air regulator set to 5bar, and dragged the torch along a wooden edge - the cutting tip still fine after numerous cuts so @gaz1 inferred the 'spit-back' was gumming up the tip last night, not through lack of air pressure but through the clearance I'd created with the technique I was using.

I'd love to know what a much, much more expensive plasma cutter (Cebora, ESAB, Thermal Dydamics, Hypertherm, etc., etc.) can do from the same supply - I'm curious after @Memmeddu commented about voltages, etc. Guess it is the same as in most things in life, tools in particular.

Do I regret buying it and spending circa' £100 over an eBay plasma..? Dunno... I have the warranty should the need arise. One pays one's money and taketh one's choice...

Try increasing air pressure to about 6 bar

 

[Memmeddu]

My stahlwerk cut 50 will go to about 30 or 35 amps on the display on a 13 amp plug before the fuse blows, goes to 53 amps on the 16 amp plug and will sever cut 12mm no problem.

Theoricaly you could sever up to 18mm or even more
But is the torch that makes the difference

 

[Tangledfeet]

Try increasing air pressure to about 6 bar

Might this have an influence on the plasma tripping out at much more than 30A..?

 

[Memmeddu]

I'm at a loss to explain why my experience is so different; out of curiosity I've just been out to plug mine in and see what it'll go up to on the 16A supply - 47A.

Seriously?
This an important factor to me because 16A is all what I have , and I'm looking to get a plasma cutter

 

[Tangledfeet]

@Memmeddu Yes; the display shows 47A maximum.

 

[Memmeddu]

Might this have an influence on the plasma tripping out at much more than 30A..?

Unfortunately I can't say if is surely true but some manufacturers decided to put a chart on their cut50 with pressures and thickness ,so I believe that is possible increase the cutting deep by changing the air pressure

 

[Memmeddu]

@Memmeddu Yes; the display shows 47A maximum.

Have you a picture of your plasma cutter?
As I said up in the comments and in something like 5 topics I'm looking for a plasma cutter and I can take one in few weeks so it's time to make a choice between various models in the market

 

[Hood]

I run my plasma full whack all the time but not sure what current it takes as it is on 3 phase and into a 32Amp socket. It is a dual voltage machine but I have never run it on single phase, not even sure what the data plate says the current requirements are for the 65Amps, will have a look and see. It is a transformer based plasma though so...

 

[Hood]

Mine says 32Amps on single and 20 Amps 3 phase.

 

[Tangledfeet]

Have you a picture of your plasma cutter?

I've already posted photos, or are you saying you don't believe me that the display shows 47A maximum - it does?!

 

[Memmeddu]

I've already posted photos, or are you saying you don't believe me that the display shows 47A maximum - it does?!

Nope far away from me to say that you are saying something false .
I would like to see which model is because I need one and if I can get something that gives some amps more than another unit using 16A is way better to me

 

[Tangledfeet]

I would like to see which model

I went for the Stahlwerk CUT 50 ST;

https://www.stahlwerk-schweissgeraete.de/en/Plasma-Cutting-Machines/CUT-50-ST/

 

[Tangledfeet]

I've sent an email to Stahlwerk...

Two weeks ago I bought, directly from Stahlwerk, one of your CUT-50 ST plasma cutters - order #####.

I am unable to get anywhere near 50A from my 16A workshop supply (it has a Type C curve breaker) without the cutter tripping the breaker almost instantly; in fact the highest the display will show is 47A. It has a good supply of air from a brand new air compressor.

I am only able to cut at 30A without the breaker tripping after ten seconds or so; I am obviously disappointed to have bought a 50A plasma that I can only use at 30A!

What can you suggest or offer in the way of support - do I have a faulty machine?

 

[Memmeddu]

I've sent an email to Stahlwerk...

Two weeks ago I bought, directly from Stahlwerk, one of your CUT-50 ST plasma cutters - order #####.

I am unable to get anywhere near 50A from my 16A workshop supply (it has a Type C curve breaker) without the cutter tripping the breaker almost instantly; in fact the highest the display will show is 47A. It has a good supply of air from a brand new air compressor.

I am only able to cut at 30A without the breaker tripping after ten seconds or so; I am obviously disappointed to have bought a 50A plasma that I can only use at 30A!

What can you suggest or offer in the way of support - do I have a faulty machine?

You definitely need 32A
I miss understood the previous posts
Nothing is created, nothing is destroyed, everything is transformed

You have to stick with 30 output or change power supply to 32A (6 kW)

 

[zx9]

You definitely need 32A
I miss understood the previous posts
Nothing is created, nothing is destroyed, everything is transformed

You have to stick with 30 output or change power supply to 32A (6 kW)

I am not sure about your logic, the primary and secondary currents are not so directly related are they?
As an example my 200A AC/DC inverter tig will run off a 16A outlet at or near to full power DC though I have to admit I have never tried it on AC at full power.
That said I don't have a plasma cutter, are some of them less efficient?