3 phase buck boost transformer - Need help with wiring

Fal Grunt · Oct 9, 2018

It's late, my brain is over complicating this, it has been a long day.

Ordered the recommended ACME buck boost transformers to bring down my voltage from 245 to 230.

I am getting confused on the connections.

Can someone who is fluent with these help me with the necessary connections?

rklopp · Oct 9, 2018

I am curious about the need to drop from 245 to 230. My local utility sends me 245-247 V, which my machines are happy with.

thermite · Oct 9, 2018

Fal Grunt said:
It's late, my brain is over complicating this, it has been a long day.

Ordered the recommended ACME buck boost transformers to bring down my voltage from 245 to 230. View attachment 239768

I am getting confused on the connections.

Can someone who is fluent with these help me with the necessary connections?

I'm old and tired too. Don't over-think it. There are only a few possible choices. None of them go nuclear.

Pick the diagram you think is the right one. Wire it that way.

Put some simple dummy load on it such as incandescent lamps or any small don't-give-a-shit-aboucha 3-P motor. Old coolant pump or such.

Make safe meter connections. Electrocution is close enough to "nuclear" to be worth giving a miss.

MEASURE what yah got.

If you didn't hit it on the first go, you will on the second. And you, not "we" will OWN that Acme transformers a**, ever-after.

As it should be. Bugger didn't sign YOUR paycheck, did it? It don't get to be boss, then.

Fal Grunt · Oct 10, 2018

The diagram pictured is the connection I need to wire.

Input 1 - X1 & X3
Output 1 - X4 & H1

Input 2 - H4 & H4 - Output 2

Input 3 - X1 & X3
Output 3 - X4 & H1

Jumper H2 & H3 in both transformers

X2 connection?

Correct?

thermite · Oct 10, 2018

Fal Grunt said:
The diagram pictured is the connection I need to wire.

Input 1 - X1 & X3
Output 1 - X4 & H1

Input 2 - H4 & H4 - Output 2

Input 3 - X1 & X3
Output 3 - X4 & H1

Jumper H2 & H3 in both transformers

X2 connection?

Correct?

Dunno. I didn't wind the bugger. Acme doesn't usually lie, though. They'd get caught.
The used transformers I traffic in? Damaged labels? Even PAPER labels?

What did your meter say?

Not as if one cannot make a temp connection is mere minutes and FIND OUT, is it?

I test off a mere 15A "QO" breaker. Screw the dog, not much harm.

Confident it's OK, tape it up and close it up. THEN it goes onto the "real" load. No drama.

SAF · Oct 10, 2018

Fal Grunt said:
The diagram pictured is the connection I need to wire.

Input 1 - X1 & X3
Output 1 - X4 & H1 & X2

Input 2 - H4 & H4 - Output 2

Input 3 - X1 & X3
Output 3 - X4 & H1 & X2

Jumper H2 & H3 in both transformers

X2 connection?

Correct?

Corrected, SAF Ω

Fal Grunt · Oct 10, 2018

SAF said:
Corrected, SAF Ω

.
Thank you.

SAF · Oct 10, 2018

Fal Grunt said:
.
Thank you.

If your running a phase converter, put the generated leg in the center. Keep the utility legs on the outsides, for the best balance and performance.

SAF

reedeprintice · Oct 13, 2018

I just did this

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3 phase buck boost transformer - Need help with wiring

Fal Grunt

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rklopp

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thermite

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Fal Grunt

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thermite

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SAF

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Fal Grunt

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SAF

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reedeprintice

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