Taking apart a large transformer

Ignoramus28225 wrote: ...

They are electrolytic capacitors and use a carbon aerogel as one of the "plates". Aerogels have a very large surface area per volume.

Anthony

and another DUFUS chimes in............ where do these guys live, before they show up here and display their lack of knowledge.......Maybe we could send them a CLUE in the mail........

Me

Yes, I do know which type the OP has, and it IS a DRY type, and always has been. It doesn't take a Rocket Scientist to figure out these things, even without hours, and hours, of DIRECT experience with ferroUPS equipment. If you don't know, just keep quiet, and the rest of the world, won't know, that you don't know. but if youinsist on opening your mouth, or typing out of your brain, you leave no doubt, that you don't know....

Me

Nice indeed, but it falls apart when using filenames with spaces in them :-O

Where did you get the convert utility from, it's not installed on my system and it's not on the install discs either, could you mail to me or post a url somewhere...

I've corrected the missing string encapsulations and are going through the script to make a little more HTML compliant, ie. add a and / and a few other bits, I'll post my version here when I'm finnished molestring it :-)

Regards

Morten

ps: You can mail me at mormordogs at zorland dot netdogs but please take out the dogs first, they need attention to :-)

Yes, definitly "Reactionay" in that you had NO Knowledge of the transformer in question, and when others explained that ALL these used in a FerroUPS, are DRY transformers, you still insist telling the world, your prepositioned agenda. Actually, some of US do know exactly what transformer the OP has, and what type it is, and that it doesn't have anything to do with PCB's. Now, do you know what PCB stands for, or is this another area that you knowledge base doesn't cover?

Me

Thanks, that makes complete sense. I also thought that X farad at 12 V vs. Yfarad at 250 V cannot be compared, what really matters (for some applications) is how much energy they can store for rated voltage.

What does that contactor do? What is it?

Thanks. Yes, I will pull it apart and try to sell various parts that I do not need.

I am pretty fascinated by the idea of having my own welder. Since there are many windings on this transformer already, it just might have one low voltage winding, and with a few big ass diodes I would have a serious DC power source.

I am now making a subpanel in my garage, so, it would all fit with having my own welding machine. Of course, I need to learn a lot about what is involved in welding equipment. Great idea.

That would not be for me...

All in all, great thoughts!

Great point. Look at 'system' call invocation, you can put single quotes around the filenames.

It is a part of the ImageMagick package.

Cool, wonderful!

Its a big relay, a solenoid actuated switch (sorta)

You'll probably have to wind another primary sized for the welding load.

On the secondary side you might be using something like #4 or bigger wire, and you'll have to add an inductor.

Look around on the web you should be able to use that transformer form for something really cool and dangerous

Welding is a skill that takes time and preferably instruction to master. I suggest that if you want to learn how to weld, you take a community college course.

The transformer is probably sized to make a decent welder, but the task is not trivial. You'll have to figure out the turns ratio, calculate the size of wire and number of turns for the new secondary, wind it, probably make an inductor and deal with the leads.

So, one thing at a time. Learn to weld, research building your own welder and go from there. Don't try to do it all at once.

Oh, I see. I have not gotten to it yet, I suppose. I would not miss it.

I will check out. This UPS is good for 60 amps incoming 208 volts.

I agree completely.

I hope that I can handle that. It is just simple math.

Okay. At first, I want to understand, basically, what is it that is necessary for declaring an apparatus a welding machine. What are the requirements for a good welding machine? DC, AC, amps, does it need to be adjustable voltage, etc.

You will notice that my suggestion was posted before any of these explanations arrived. Or, perhaps you won't notice.

In any case, it doesn't matter to you, really. You know that.

I did not know whether his transformer contained liquid, and neither did he. If nobody else had happened by to clarify, he may well have opened up a Pandora's box, so to speak. But, it doesn't matter at this point. Your only reason for being here is because you needed to vent some anger that came from somewhere else in your life.

I want to chime in.

I did know that the transformer was dry. Doug did not know that at the time he made his post. I feel that his warning was warranted, even though the facts that he did not know, obviated the need for his warning.

I personally would prefer to be informed of dangers, even though some of the warnings turn out to be irrelevant, as opposed to not being warned of dangers that "might" be actual.

This discussion of PCBs has been very enlightening to me and I thank both Doug amd "Me".

Thats almost what I did, I put any strings into \" and that solved the issue...

Yes, I know I just found it and installed it, so now that part works as well :-)

/Morten

The EPA web site refers to the capacitors containing PCBs but it says nothing about the transformers.

Which puts me at the limit of my knowledge, so I'd better take my own advice and shut up.

--RC "Sometimes history doesn't repeat itself. It just yells 'can't you remember anything I've told you?' and lets fly with a club. -- John W. Cambell Jr.

I hope that you can make good use of my script.

When I need to create a picture webpage I do this:

cd public_html/tmp mkdir MyDir cd MyDir gp # this gets pictures from the memory stick, my own script i-p # alias of the index-pix script

gp involves editing images with xv, which is extremely fast due to good ergonomics (use of keyboard). All I do is cropping and resizing.

No, those are DC electrolytic filter caps which do not contain PCB. The three oil filled AC paper caps in the picture behind the bank of blue electros would be prime contenders for PCB, but unlikely if manufactured