CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Re: U.S. 220 vs Euro 220

Posted by Jon Elson
on 2001-05-17 14:08:52 UTC
info.host@... wrote:

> What is Star and Open Delta (?Wye?)? Do you remember where abouts it was
> that uses 440V raw in the house? I'm off to get my multimeter. `.^)

Star is a winding where there is a neutral connection for all three phase
windings. This is sometimes also called '4-wire', as there is a 4th wire,
the neutral. Delta has no neutral connection, each phase winding goes from
line to line. Open delta is a scheme to provide 3-phase power step-down
from high voltage mains with 2 single phase transformers, instead of
3 single phase transformers or one transformer with all 3 phases on it.
For heavy motor loads or very imbalanced loads, open delta will not give
the same phase balance as a true 3-phase transformer, but for moderate
loads it works fine. The advantage is where pole-mounted transformers
are used, it is much easier to put two small thransformers on the pole than
3 small ones or one great big, 3-phase monster. Also, one transformer
can be added to the existing transformer to get 3-phase power at the lowest
incremental cost.

Oh, star and wye are synonyms.

Jon

Discussion Thread

blueveil@e... 2001-05-16 10:14:17 UTC U.S. 220 vs Euro 220 wanliker@a... 2001-05-16 10:59:37 UTC Re: [CAD_CAM_EDM_DRO] U.S. 220 vs Euro 220 Carol & Jerry Jankura 2001-05-16 13:01:23 UTC RE: [CAD_CAM_EDM_DRO] U.S. 220 vs Euro 220 stevesng@n... 2001-05-16 16:32:42 UTC Re: U.S. 220 vs Euro 220 JanRwl@A... 2001-05-16 17:27:06 UTC Re: [CAD_CAM_EDM_DRO] U.S. 220 vs Euro 220 A. G. Eckstein 2001-05-16 17:45:07 UTC Re: [CAD_CAM_EDM_DRO] U.S. 220 vs Euro 220 info.host@b... 2001-05-17 05:08:15 UTC Re: [CAD_CAM_EDM_DRO] U.S. 220 vs Euro 220 machines@n... 2001-05-17 05:36:32 UTC Re: U.S. 220 vs Euro 220 info.host@b... 2001-05-17 11:56:44 UTC Re: [CAD_CAM_EDM_DRO] Re: U.S. 220 vs Euro 220 Sven Peter, TAD S.A. 2001-05-17 12:10:22 UTC Re: [CAD_CAM_EDM_DRO] U.S. 220 vs Euro 220 blueveil@e... 2001-05-17 12:18:10 UTC Re: U.S. 220 vs Euro 220 Carol & Jerry Jankura 2001-05-17 13:03:59 UTC RE: [CAD_CAM_EDM_DRO] U.S. 220 vs Euro 220 Sven Peter, TAD S.A. 2001-05-17 13:09:10 UTC Re: [CAD_CAM_EDM_DRO] U.S. 220 vs Euro 220 Sven Peter, TAD S.A. 2001-05-17 13:11:34 UTC Re: [CAD_CAM_EDM_DRO] Re: U.S. 220 vs Euro 220 Carol & Jerry Jankura 2001-05-17 13:38:58 UTC RE: [CAD_CAM_EDM_DRO] U.S. 220 vs Euro 220 Jon Elson 2001-05-17 14:08:52 UTC Re: [CAD_CAM_EDM_DRO] Re: U.S. 220 vs Euro 220 Jon Elson 2001-05-17 14:46:54 UTC Re: [CAD_CAM_EDM_DRO] Re: U.S. 220 vs Euro 220 wanliker@a... 2001-05-17 15:26:56 UTC Re: [CAD_CAM_EDM_DRO] Re: U.S. 220 vs Euro 220 Sven Peter, TAD S.A. 2001-05-17 17:04:58 UTC Re: [CAD_CAM_EDM_DRO] U.S. 220 vs Euro 220 JanRwl@A... 2001-05-18 19:55:09 UTC Re: [CAD_CAM_EDM_DRO] Re: U.S. 220 vs Euro 220 ballendo@y... 2001-05-21 18:17:47 UTC Re: U.S. 220 vs Euro 220 Ward M. 2001-05-21 23:43:29 UTC RE: [CAD_CAM_EDM_DRO] Re: U.S. 220 vs Euro 220