Open Wye 3 pot bank

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Open Wye 3 pot bank

Post  rcdallas on Mon Feb 13, 2012 3:15 am

New to some, but not new to all. Open Wye-3 pot bank. 120/208 Only took me about 1.5 years to finally lays my eyes on one.
















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Re: Open Wye 3 pot bank

Post  Highplains Drifter on Mon Feb 13, 2012 4:31 am

It is new to me, must be an oil field thing ,so what is the advantage of it?
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Re: Open Wye 3 pot bank

Post  hotwiretamer on Mon Feb 13, 2012 10:17 am

New to me too. What would be the need??
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Re: Open Wye 3 pot bank

Post  rcdallas on Mon Feb 13, 2012 2:11 pm

If you need 3 phase service 120/208 or 277/480 and all you have is two phases of primary. Climbsomemore was talking about where one of the phases on the secondary might show a little low but it's enough to fool a motor little while back.

wtdoor67 is the one who showed me where this bank was; can't remember how much experience he has with building one of these.

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Heres a two pot open wye bank

Post  admin on Mon Feb 13, 2012 2:29 pm


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Re: Open Wye 3 pot bank

Post  rcdallas on Mon Feb 13, 2012 3:29 pm

Top that's an open wye-open delta bank you have in your diagram.

Now there is also another configuration to what I posted utilizing two pots on a 120/208 or 277/480 service but it can only be done with a 4 external secondary bushing transformer (167kva). I have a diagram of it stashed away somewhere.

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Re: Open Wye 3 pot bank

Post  admin on Mon Feb 13, 2012 3:57 pm

Here's a picture of a 4 bushing transformer. I believe the middle tub is a 4 bushing and the outside tubs are 3 bushing.


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Re: Open Wye 3 pot bank

Post  wtdoor67 on Mon Feb 13, 2012 8:27 pm

rcdallas wrote:If you need 3 phase service 120/208 or 277/480 and all you have is two phases of primary. Climbsomemore was talking about where one of the phases on the secondary might show a little low but it's enough to fool a motor little while back.

wtdoor67 is the one who showed me where this bank was; can't remember how much experience he has with building one of these.

I've never built one except in one of those training centers where they have the little pots to practice on.

I knew about it since the 80's but never saw one in use until I landed in Chickentown.

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Thanks..........

Post  johnbellamy on Tue Feb 14, 2012 1:27 am

For the pictures, it must work, I do not think I will ever come across one in these parts, but I will keep an eye out, probably find Sasquatch first, he has been duckin me for years.
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Re: Open Wye 3 pot bank

Post  rcdallas on Tue Feb 14, 2012 1:41 am

wtdoor67 wrote:
I've never built one except in one of those training centers where they have the little pots to practice on.

I knew about it since the 80's but never saw one in use until I landed in Chickentown.

If I could ever get my Ben Stein instructor back out to bring me those little pots I'd have a field day with all the things that I've learned beyond the basic bank hookups. I remember when I played with them before they do require a 3 phase hookup on them.

I tell you when I pulled over at that toll place to take those pictures I didn't know if they we're going to call the cops on me for being a little suspicious just parking and taking pictures and driving off.


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Vectors

Post  jammer817 on Fri Oct 10, 2014 1:00 pm

Sorry to bring this back from the dead, but I would love to see a vector diagram of this if someone knows what it would look like.

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Re: Open Wye 3 pot bank

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