A
Alan Horowitz
- Jan 1, 1970
- 0
what is the attraction of three-phase power? Why not 9 0r 317
phases? Why not plain ole hot & neutral?
phases? Why not plain ole hot & neutral?
Alan said:what is the attraction of three-phase power?
what is the attraction of three-phase power? Why not 9 0r 317
phases? Why not plain ole hot & neutral?
The motor is effectively running on a much higher voltage than single phase,Alan said:what is the attraction of three-phase power? Why not 9 0r 317
phases? Why not plain ole hot & neutral?
In rec.radio.amateur.equipment Alan Horowitz said:what is the attraction of three-phase power? Why not 9 0r 317
phases? Why not plain ole hot & neutral?
And in most places, "plain ole hot & neutral" comes in as 2 phase, also
called "220".
Alan Horowitz said:what is the attraction of three-phase power? Why not 9 0r 317
phases? Why not plain ole hot & neutral?
Actually, this is normally called "split phase" rather than 2 phase because
the the neutral 'splits' the single phase 240 volt drop.
Actually, this is normally called "split phase" rather than 2 phase because
the the neutral 'splits' the single phase 240 volt drop.
Actually, this is normally called "split phase" rather than 2 phase because
the the neutral 'splits' the single phase 240 volt drop.
318; you forgot the ground prong.9 phases.... 317 phases, have you ever wired a 317 prong plug?
In rec.radio.amateur.equipment John Woodgate said:I read in sci.electronics.design that Brenda Ann <[email protected]>
wrote (in <[email protected]>) about 'why 3-phase power?',
The question of whether 120-0-120 is split-phase or two phase is not
just a fighting issue in the US, it's a TOTAL ANNIHILATION issue. (;-)
Wholly incredible to this poor Brit.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
Interested in professional sound reinforcement and distribution? Then go to
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John said:I read in sci.electronics.design that Frank Bemelman
318; you forgot the ground prong.
In England a 230 V single phase is just that, one wire is nutral, nominalySpehro Pefhany said:Perhaps so, but "2 phase" is wrong.
I read in sci.electronics.design that Brenda Ann <[email protected]>
wrote (in <[email protected]>) about 'why 3-phase power?',
The question of whether 120-0-120 is split-phase or two phase is not
just a fighting issue in the US, it's a TOTAL ANNIHILATION issue. (;-)
Wholly incredible to this poor Brit.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
Interested in professional sound reinforcement and distribution? Then go to
http://www.isce.org.uk
PLEASE do NOT copy news posts to me by E-MAIL!
earth but seperate from the true earth, and the other caries 230V ac.
I belive the American system is 2 x 110 V ac lines with respect to earth,
but at 180 degree phase angle, to give 220 V ac potential between them.
I would say it's fair to call this 2 phase.
John Woodgate said:I read in sci.electronics.design that Frank Bemelman
318; you forgot the ground prong.
Spehro Pefhany said:It better uses transformer iron and makes better/cheaper induction
motors. For making DC it requires less in the way of filtering. It
would be nice if we had something like 6 phase power, we could get rid
of the input filter caps in most equipment, the only part that we
can't make smaller by increasing efficiency and frequency of SM power
supplies.
Spehro Pefhany said:Yes (or is it now 240 nominal there)?
120V, but close enough.
Not fair, just WRONG, though I can see that electricians who think of
"phase" as equivalent to "hot wire" might find it okay. True two phase
could be converted to 3, 6 or whatever phase using Scott-T
transformers.
line. You can go right or left on a one-dimensional line from zero,
but it's still in one dimension..