RE: Single vs Two Phase

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "John H. Couture by way of Terry Fritz <twftesla-at-qwest-dot-net>" <couturejh-at-mgte-dot-com>


DWP -

Not correct. The electrical delta system is represented as three vectors in
the form of a triangle with three 60 degree angles, not 120 degrees as you
indicated. Don't confuse with the Y system with 120 degrees between vectors
. For practice draw the vector diagrams including arrows for both systems.
Then draw the vectors for a transformer with a delta primary and a Y
secondary. What are the angles between the primary and secondary vectors,
30, 45, 60, 90, 120?

John Couture

-------------------------------


-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Sunday, January 06, 2002 3:55 PM
To: tesla-at-pupman-dot-com
Subject: Re: Single vs Two Phase


Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<davep-at-quik-dot-com>


> The two phases

	TWO phases?

> in the standard utility 3 phase Y system are 120 degrees apart. The
> two phases in the standard utility delta system are 60 degrees apart.

	3 phase Delta is 120 degrees, just as Y.

	(They can be interconnected with transformers).

	best
	dwp