Tony,
A guy is trying to flog me this for 950 Euros, what do you think ?
A bit expensive right ?
A nice machine but not sure I want to spend that much on it.
Hinzmann GmbH - Wickelmaschinen
A guy is trying to flog me this for 950 Euros, what do you think ?
A bit expensive right ?
A nice machine but not sure I want to spend that much on it.
Hinzmann GmbH - Wickelmaschinen
above #18, i tend to do the winding manually since turns count is very low...
experience will tell you which wires to run in the machine and which one can be done by hand...
i once did a traffo with #12 primary and #10 secondary, took me and two of my brothers-in-law to build the coil by hand....
experience will tell you which wires to run in the machine and which one can be done by hand...
i once did a traffo with #12 primary and #10 secondary, took me and two of my brothers-in-law to build the coil by hand....
you have to know turns ratio, impedance ratio, and power levels...
type of material for the core....
Hi All
I did want to make a weld transformer who has to go to max 140 amp on a 220 v grid.
I have found some used trafo,s who has a big core, amp get regulated with primary windings and fixed secondary windings, make the trafo for the highest amperage 30 % and the lowest 100% of time before it get to hot.
I did not find the formulas to calculate this properly.
regards
kees
I did want to make a weld transformer who has to go to max 140 amp on a 220 v grid.
I have found some used trafo,s who has a big core, amp get regulated with primary windings and fixed secondary windings, make the trafo for the highest amperage 30 % and the lowest 100% of time before it get to hot.
I did not find the formulas to calculate this properly.
regards
kees
Hi Andrew
this picture lets see what I mean, use primairy as current setting only on high current I can weld not so long before heat then on low amperage who can weld continu.
But find formulas for the calculation is noet everywhere so I have to do it myself.
shematic is example, so diodes are just choosen for easy quick schematic.
regards
kees
this picture lets see what I mean, use primairy as current setting only on high current I can weld not so long before heat then on low amperage who can weld continu.
But find formulas for the calculation is noet everywhere so I have to do it myself.
shematic is example, so diodes are just choosen for easy quick schematic.
regards
kees
Attachments
Sorry but diodes are wired wrong.
And the transformer needs some means to limit current, brcause the secondary arc behaves like a short.
It can have an adjustable gap, an adjustable series inductance, or both.
Hi it is just a sample, quickly drawn, just to give a idea what I want.
Like it is drawn so it sits in the welder machine, however trafo is 3 fase and I need one
so make a new transformer, winding it is not complicated but calculate it for this way
is more difficult.
regards
kees
I have a normal big trafo who core is big enough, I have to rewind it for what I want to do.
As tell, the diodes are normal 150 ampere types 4 pieces with a elco 10.000 uF for a CO2 welder.
adjustable airgap I do now it is most vor ac welders with a stick and a wheel, but not usable for the Co2 welding machine, this need a trafo like drawn.
regards
you have devise some means to limit primary current so that
the core don't saturate under load...in case your traffo is like
the one you showed, then a variac can help you....
another way would be a triac circuit controlling primary current..
http://www.iascaled.com/docs/psu-400w/an308.pdf
the core don't saturate under load...in case your traffo is like
the one you showed, then a variac can help you....
another way would be a triac circuit controlling primary current..
http://www.iascaled.com/docs/psu-400w/an308.pdf