How many ways to connect

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K2500

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So, I've got 2 transformers, for what I'll call a home lab expiement. I would like to connect them together. How many ways could I do this, within reason. They don't ussualy let me "play" with the transformers at work, something about shutting down the plant:grin: .

I was thinking maybe some parallel or series type connections, but I cant seem to find my ugly's book.
Just a little hands on is all I'm looking for, and we just did some control demo. Kinda worked out. A little math might help, to go along with it.

Edit to add: I have 240/120 single phase available.

Two Identical

.35 KVA INSL CLS 105

X1/X2 115V

H8 0V

H7 190V

H6 208V

H5 230V

H4 0V

H3 190V

H2 208V

H1- 230V
 
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if you send a diagram

if you send a diagram

I'll do the math.
It's combinations and permutations, probably using factorials.
 
langjahr@comcast.net said:
I'll do the math.
It's combinations and permutations, probably using factorials.
Click to expand...

Thank you, just know that if it gets to complicated I may have to start a new thread. On how to do the math.:)
 
K2500 said:
So, I've got 2 transformers, for what I'll call a home lab expiement. I would like to connect them together. How many ways could I do this, within reason. They don't ussualy let me "play" with the transformers at work, something about shutting down the plant:grin: .

I was thinking maybe some parallel or series type connections, but I cant seem to find my ugly's book.
Click to expand...

Do you want to include the possible autotransformer connections also?

Do you have a winding diagram? It looks like there are (2) multi-tap "H" windings and (1) "X" winding. Normally it is not a good idea to connect only between taps (i.e. H8 - H9) of transformers as they don't have enough turns to create a proper magnetic field.
 
jim dungar said:
Do you want to include the possible autotransformer connections also?

Do you have a winding diagram? It looks like there are (2) multi-tap "H" windings and (1) "X" winding. Normally it is not a good idea to connect only between taps (i.e. H8 - H9) of transformers as they don't have enough turns to create a proper magnetic field.
Click to expand...

Yes, but, what is an auto transformer connection?

Yup, multi-tap(2) H windings, and just the single X winding.
I guess I mispoke though, I am really interested in the more usefull of the connections. Parallel and series type would be good. Auto transformer connections, as soon as I find out what that is, and so on. I have found that when I wire them "inversely" I get 20 or 40 or whatever volts between any two taps, but I am glad you added that they don't have enough turns. Guess I could compare that to trying to load a stray wire with induced, or phantom, voltage on it.
 
K2500 said:
Yes, but, what is an auto transformer connection?
Click to expand...

Basically an autotransfromer connects the H windings in series with the X windings. This allows small, usually not more than 20%, voltage adjustments.
 
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