Hello Andrew, et al;
World Electricity Supplies which has been referenced in this thread is
available from the Int'l Product Safety Bookshop which can be found on the
Safety Link at:
www.safetylink.com/bookshop.html
Regards, Art Michael
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VoicePlus 6-341-2289.
-Original Message-
From: Paolo Gemma [mailto:paolo.ge...@icn.siemens.it]
Sent: 17 January 2002 17:56
To: acar...@uk.xyratex.com
Cc: emc-p...@majordomo.ieee.org
Subject: Re: What about 480 VAC in Europe? RE: 2 Phases
Peter
The star distribution with the center point neutral runs from the
distribution grid substation to the facility. So the utility company
provides the consumer with the four wires, which they then distribute
as required.
In a residential area, the three phases are split every third house,
-622243. VoicePlus
6-341-2289.
-Original Message-
From: Paolo Gemma [mailto:paolo.ge...@icn.siemens.it]
Sent: 17 January 2002 17:56
To: acar...@uk.xyratex.com
Cc: emc-p...@majordomo.ieee.org
Subject: Re: What about 480 VAC in Europe? RE: 2 Phases in North America
Also Italy have a nominal
Also Italy have a nominal phase to phase of 380VAC.
Ciao
Paolo
At 11:20 1/17/02 +, Andrew Carson wrote:
Terry
Then nominal EU phase to phase voltage is 400VAC with a +6/-10% Tolerance.
Distribution is Three Phase Star, Earthed Neutral.
Some countries are still a little behind in the
Andrew -
Please clarify something for me. Is the utility
distribution star configured (WYE connected), rather than
DELTA? Or are you speaking only wrt typical distribution
within a building? (In the US, distribution is generally
used to reference utility power distribution, for instance,
Terry
Then nominal EU phase to phase voltage is 400VAC with a +6/-10% Tolerance.
Distribution is Three Phase Star, Earthed Neutral.
Some countries are still a little behind in the voltage harmonization e.g..
Belgium is a nominal 380VAC. Other have not
changed as they fall within the tolerance
High all:
I have been away form the forum, very busy, and a quick review notes you have
been discussing Power distribution in USA.
What about Europe? We have an application needing 480 VAC here in USA.
How compatible will 480 VAC be in Europe?
Someone told me 390 VAC is more real in
Cc: Cortland Richmond 72146@compuserve.com, ieee pstc list
emc-p...@ieee.org
Subject: Re: 2 Phases in North America
Date: Mon, Dec 17, 2001, 1:44 PM
Ken:
I think that you did not miss too much - my Physics 101 however was over 50
years ago and harmonics were only
mentioned in acoustics
John Shinn wrote:
If we refer back to the series, and refer to the n-th term, we
would all be on the same page (and harmonic).
And in harmony!
Cortland
(disclaimer: my views, not Alcatel's!)
---
This message is from the IEEE EMC Society Product
To: mhopk...@thermokeytek.com; bogda...@pacbell.net;
cortland.richm...@alcatel.com
Cc: r...@canoga.com; john...@itesafety.com; bar...@melbpc.org.au;
emc-p...@majordomo.ieee.org
Subject: Re: 2 Phases in North America
Mike,
I don't go with you on this one...
0 implies nothing ( prehaps 0 ac
: 2 Phases in North America
Date: Mon, Dec 17, 2001, 12:04 AM
If we're smart (are we?) we'll say fundamental, and let whoever wants to
argue what 2nd means have the arena all to themselves!
I would say there are harmonics of the second order, third order, and so
on, to which we refer
Gentlemen:
I certainly did not intend to start philosophical contortions!
Season's greetings and a harmonic(*) New Year!
Bogdan.
(*) Now what will this start
lfresea...@aol.com wrote:
Mike,
I don't go with you on this one...
0 implies nothing ( prehaps 0 ac ) ... therefore the 0th
I read in !emc-pstc that lfresea...@aol.com wrote (in 169.5d0f58e.294f6
e...@aol.com) about '2 Phases in North America', on Mon, 17 Dec 2001:
0 implies nothing ( prehaps 0 ac ) ... therefore the 0th harmonic is
dc???
That fits with Fourier analysis.
if a squarewave is made up of odd
I can see that this subject hasn't fazed ANYONE.
Cortland
(speaking, as usual, for myself - and not my
employer)
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site at:
Esmore'; 'EMC-PSTC Forum'
Subject: Re: 2 Phases in North America
ok folks. This topic needs to be clarified.
With respect to each other, by definition, two conductors have a
potential
difference at 180 degrees. Period. The 90 degree stuff may pertain to
current but
not to voltage. You
Failed on the first try. Let's try again.
Peter
-Original Message-
From: Peter Tarver [mailto:peter.tar...@sanmina.com]
Sent: Friday, December 14, 2001 8:57 AM
To: 'EMC-PSTC Forum'
Cc: 'Barry Esmore'
Subject: RE: 2 Phases in North America
This is a recurring topic.
While
@compuserve.com
To: bogdan matoga bogda...@pacbell.net, ieee pstc list emc-p...@ieee.org
Subject: Re: 2 Phases in North America
Date: Mon, Dec 17, 2001, 12:04 AM
If we're smart (are we?) we'll say fundamental, and let whoever wants to
argue what 2nd means have the arena all to themselves!
I
Mike,
I don't go with you on this one...
0 implies nothing ( prehaps 0 ac ) ... therefore the 0th harmonic is
dc???
if a squarewave is made up of odd harmonics, we would have to rethink that,
correct?
Derek.
---
This message is from the IEEE EMC
: Jayasinghe, Ryan; Robert Johnson; 'Barry Esmore'; 'EMC-PSTC Forum'
Subject: Re: 2 Phases in North America
Cortland:
I always thought that 50 Hz or respectively 60 Hz was the 0-th harmonic!
Was
I mistaken? (I would not be surprised!) (: -) !!
Bogdan.
Cortland Richmond wrote:
This is rather
...@capecod.net]
Sent: 14 December 2001 22:33
To: 'Wagner, John P (John)'; 'Robert Johnson'; 'Cortland Richmond'
Cc: 'Barry Esmore'; 'EMC-PSTC Forum'
Subject: RE: 2 Phases in North America
Two Phase / 5 Wire (4 hots and a neutral) was a common power distribution
in US cities in the early part
If we're smart (are we?) we'll say fundamental, and let whoever wants to
argue what 2nd means have the arena all to themselves!
I would say there are harmonics of the second order, third order, and so
on, to which we refer, in short, as the second and third harmonics (and so
on). Don't forget,
Cortland:
I always thought that 50 Hz or respectively 60 Hz was the 0-th harmonic! Was
I mistaken? (I would not be surprised!) (: -) !!
Bogdan.
Cortland Richmond wrote:
This is rather similar to asking what the first harmonic of the power line
frequency is. (grin!)
Cortland
Jayasinghe,
ok folks. This topic needs to be clarified.
With respect to each other, by definition, two conductors have a potential
difference at 180 degrees. Period. The 90 degree stuff may pertain to current
but
not to voltage. You would need a four-phase transformer to get 90 degree
phasing and
simply
[mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of bogdan matoga
Sent: Friday, December 14, 2001 3:12 PM
To: Cortland Richmond
Cc: Robert Johnson; 'Barry Esmore'; 'EMC-PSTC Forum'
Subject: Re: 2 Phases in North America
Dear Esquire:
May I suggest that you partake in a course called
This is rather similar to asking what the first harmonic of the power line
frequency is. (grin!)
Cortland
Jayasinghe, Ryan wrote:
180° out of phase?
---
This message is from the IEEE EMC Society Product Safety
Technical Committee
I read in !emc-pstc that Price, Ed ed.pr...@cubic.com wrote (in
b78135310217d511907c0090273f5190d0b...@curly.ds.cubic.com) about '2
Phases in North America', on Thu, 13 Dec 2001:
At this point, you still have a single-phase system. The voltage is
240 Vrms, from one hot line to the other.
Should have put a (grin) symbol in that.
I've always understood two phase to mean a
distribution system using three wires, one common,
with two conductors whose phase differed by 90
degrees. These were used, I believe, mainly for
motors. I think this is what the original question
was asking
: Friday, December 14, 2001 3:14 PM
To: Robert Johnson; Cortland Richmond
Cc: Barry Esmore; EMC-PSTC Forum
Subject: RE: 2 Phases in North America
Actually, 2 phase systems have a phase rotation of 90 degrees, not 180.
Two phase systems have been used for control motors and the like
Dear Esquire:
May I suggest that you partake in a course called Basic Electricity
001?
Bogdan.
Cortland Richmond wrote:
By the definition below, *single phase* AC would require one wire
with no return. I want to see THAT one work before I pay for it!
Cortland Richmond
(the above being my
: Friday, December 14, 2001 10:38 AM
To: Robert Johnson
Cc: 'Barry Esmore'; 'EMC-PSTC Forum'
Subject: Re: 2 Phases in North America
By the definition below, *single phase* AC would require one wire with
no return. I want to see THAT one work before I pay for it!
Cortland Richmond
By the definition below, *single phase* AC would require one wire with
no return. I want to see THAT one work before I pay for it!
Cortland Richmond
(the above being my own opinion, not a statement of my employer's)
Robert Johnson wrote:
This
has just reopened the old two phase controversy
-
From: owner-emc-p...@majordomo.ieee.org
[mailto:owner-emc-p...@majordomo.ieee.org] On Behalf Of Price, Ed
Sent: Thursday, December 13, 2001 8:23 PM
To: 'Barry Esmore'; EMC-PSTC Forum
Subject: RE: 2 Phases in North America
-Original Message-
From: Barry Esmore [mailto:bar
-Original Message-
From: Barry Esmore [mailto:bar...@melbpc.org.au]
Sent: Thursday, December 13, 2001 2:39 PM
To: EMC-PSTC Forum
Subject: 2 Phases in North America
Hi All,
Can someone provide an estimate of the percentage of homes and businesses
that have 2 phases in Canada and the
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