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Old 11-25-2010, 10:14 PM   #1
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What type of Delta?


What type of Delta hook-up gives up a high leg?
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Old 11-25-2010, 10:17 PM   #2
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What type of Delta?


"high-leg delta".
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Old 11-25-2010, 10:17 PM   #3
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What type of Delta?


No joke. That's what it's called... or "center-grounded delta" but that name irritates me since the center of a triangle is just a void.

http://en.wikipedia.org/wiki/High_leg_delta
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Old 11-25-2010, 11:04 PM   #4
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What type of Delta?


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Originally Posted by emolatur View Post
No joke. That's what it's called... or "center-grounded delta" but that name irritates me since the center of a triangle is just a void.

http://en.wikipedia.org/wiki/High_leg_delta
it's the center of one of the windings that is grounded. That is why it is called center grounded or center tapped.

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Old 11-26-2010, 12:19 AM   #5
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What type of Delta?


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What type of Delta hook-up gives up a high leg?
4 wire high leg delta system.


I know it sound little funny but really the high leg is actally 208 volts from wild leg to netural and not often used in resdentail beside few older spots still have it but commercal / industrail still used them but not really widespread anymore due the safety issue with 4 wire delta system and this kind of set up is genrally not a DIY item at all if you are not aware with the connections.

That one thing many POCO are dropping it out going with full Wye connection.

Yeah there is other delta system out there but right now I am not going to list it for now unless you request it.

Merci.
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Old 11-26-2010, 12:25 AM   #6
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What type of Delta?


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it's the center of one of the windings that is grounded. That is why it is called center grounded or center tapped.

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? I know this. It's the system the OP was originally asking about.

I know what the term means - I just don't like it.
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Old 11-26-2010, 12:29 AM   #7
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What type of Delta?


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? I know this. It's the system the OP was originally asking about.

I know what the term means - I just don't like it.
Just trying to toss some explanation into the situation. Your statement about the center of a triangle and all was likely a bit confusing to the OP. I know what you meant but it is likely the OP didn't.
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Old 11-26-2010, 01:03 AM   #8
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What type of Delta?


True dat.
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Old 11-26-2010, 06:35 AM   #9
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What type of Delta?


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No joke. That's what it's called... or "center-grounded delta" but that name irritates me since the center of a triangle is just a void.
To put a neutral in the center of the triangle we use the wye system as opposed to the delta system. Then we get the 120/208 and 277/480 volt systems.

Theoretically each of the three transformer windings producing one delta 3 phase system can be center tapped allowing balanced 120/240 volt loads on each of the AB, BC, and CA leg pairs. But in practice this can never be done because only one of those neutrals can be grounded.

A delta system is either high-leg (usually the high leg is designated B) or does not have a fourth wire as a neutral (is 240 volt only in the case of a 240 volt system).
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Last edited by AllanJ; 11-26-2010 at 03:24 PM.
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Old 11-26-2010, 10:28 AM   #10
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What type of Delta?


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A delta system is either high-leg (usually the high leg is designated B) or does not have a fourth wire as a neutral (240 volt only in the case of a 240 volt system).
Ahem... corner*COUGH*grounded*HACK*
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Old 11-26-2010, 12:54 PM   #11
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What type of Delta?


high leg on delta is not a corner grounded sys.
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Old 11-26-2010, 01:08 PM   #12
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What type of Delta?


also with a 480 wye,you can connect any phase to N and get 277 single phase for lighting.
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Old 11-26-2010, 01:28 PM   #13
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What type of Delta?


does anyone follow continuity on here?

oleguy74, I was responding to the guy I quoted. I'll leave it at that because I'm in such a mood right now that any further would result in some people learning a new vocabulary.
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Old 11-26-2010, 01:43 PM   #14
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What type of Delta?


yeah,i would not want you to learn something...and put you in a bad mood.
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Old 11-26-2010, 03:38 PM   #15
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What type of Delta?


Wow...
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