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Bridgeport 3 phase question

Dakotahm88

Plastic
Joined
Dec 31, 2022
I’m very familiar with three phase…. But now I am confused.
I have seen:
120/208 where line to neutral is 120 and line to line is 208

I have also seen:
277/480 where line to neutral is 277 and line to line is 480

Both of the above are Wye configurations.

What the heck is 230v three phase? Is it wye? Delta? What would the line to neutral measure?

Seems like all the old bridgeports and lathes are either 208, 230, or 480 and I can’t find any info on the 230v three phase. I did notice that people like haas still manufacture 230 three phase equipment. But it’s not common in Oklahoma.
 

Dakotahm88

Plastic
Joined
Dec 31, 2022
Although I didn’t find the answer to my question, I solved my problem by finding a Rotary phase converter with a transformer sold as a package from Phoenix. I was trying to figure out which transformer I needed to run my 460v lathe, and still need to run the 230v saws and rollers.
 

4GSR

Diamond
Joined
Jan 25, 2005
Location
Victoria, Texas, USA
240v 3-phase is delta y, where any two lines will measure 240v. Wild leg to ground will vary from around 190 something to 240v.

Here's a thread on using a step up transformer maybe even sizing one.
 








 
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