Re: [PSES] [EXTERNAL] Re: [PSES] Electric Current Abroad

[Douglas Powell]

I'm going to check out this Scott-T transformer.  It looks very interesting.

-Doug


Douglas E Powell
Laporte, Colorado USA
doug...@gmail.com
http://www.linkedin.com/in/dougp01

On Wed, Oct 28, 2020 at 4:46 PM Ted Eckert <
07cf6ebeab9d-dmarc-requ...@listserv.ieee.org> wrote:

> As John noted, some are a “bit different”. For example, you will
> occasionally find Scott transformers
>  in Japan. Then there
> is Brazil where you could find practically anything. Single-phase could be
> 110 V, 120 V, 127 V, 220 V or 230 V. It can vary within different locations
> in a city.
>
>
>
> Ted Eckert
>
> Microsoft Corporation
>
>
>
> The opinions experessed are my own and do not necessarily reflect those of
> my employer.
>
>
>
>
>
>
>
> *From:* John E Allen <09cc677f395b-dmarc-requ...@listserv.ieee.org>
> *Sent:* Wednesday, October 28, 2020 3:00 PM
> *To:* EMC-PSTC@LISTSERV.IEEE.ORG
> *Subject:* [EXTERNAL] Re: [PSES] Electric Current Abroad
>
>
>
> That worldstandards  list is, in reality, inaccurate w.r.t. the 3-phase
> voltages in the UK, and in countries where UK design practice prevails,
> where the “real world” 3-phase (STAR/WYE config) was/is around  415V (even
>  though the UK now “conforms” to the long-ago EU agreed level of 380V
>  because 380V +10% is 418V - i.e. = 415V, or “near enough”).  In reality
> that means the 1-phase voltage is around 240-245V (recently measured 243V
> upstairs in this house).
>
>
>
> Thus one should take that list with the proverbial “pinch of salt” as the
> “real world” voltages in some countries may be a “bit different” to the
> nominal ones.
>
>
>
> John E Allen
>
> West London, UK
>
>
>
> *From:* Scott Aldous <0220f70c299a-dmarc-requ...@listserv.ieee.org>
> *Sent:* 28 October 2020 21:19
> *To:* EMC-PSTC@LISTSERV.IEEE.ORG
> *Subject:* Re: [PSES] Electric Current Abroad
>
>
>
> Hi Doug,
>
>
>
> Have you seen the list from worldstandards? It doesn't cover the phase
> configurations directly but does have a column for number of wires.
>
>
>
> https://www.worldstandards.eu/electricity/three-phase-electric-power/
> 
>
>
>
> On Wed, Oct 28, 2020 at 1:48 PM Douglas Powell  wrote:
>
> All,
>
>
>
> In the distant past I struggled to learn what were the expected electrical
> voltage, frequency, and phase configurations (delta, wye, high-leg, etc)
> for commercial/industrial facilities in various countries. I know about IEC
> 60038 standard voltages, but standard voltages don't always represent real
> life in specific locales. What I wanted was a good country-by-country
> listing for three phase power. The source I most often used was "
> http://www.ita.doc.gov/media/Publications/pdf/current2002FINAL.pdf
> ".
> A 2002 reprint of the 1998 document, and now a broken link. After a generic
> search of  www.ita.doc.gov
> ,
> It seems it is no longer available.
>
>
>
> Yes, I realize the information was getting old but finding no up to date
> alternative, I searched elsewhere.  And besides, It's not likely that such
> things like this change rapidly.
>
>
>
> Google Books: Link
> 
>
> Wayback Machine: Link
> 

Re: [PSES] [EXTERNAL] Re: [PSES] Electric Current Abroad

[John E Allen]

Absolutely!

 

Thus, an equipment mfr  really does need to ask their local importer/agent in 
the country concerned to confirm the  local 3-/1-phase voltage actually IS in 
the location(s) where that kit will/might be installed/sold – especially in 
less-developed/”3rd World” countries.

 

John E Allen

West London, UK.

 

From: Ted Eckert  
Sent: 28 October 2020 22:47
To: john_e_al...@blueyonder.co.uk; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [EXTERNAL] Re: [PSES] Electric Current Abroad

 

As John noted, some are a “bit different”. For example, you will occasionally 
find Scott transformers   in 
Japan. Then there is Brazil where you could find practically anything. 
Single-phase could be 110 V, 120 V, 127 V, 220 V or 230 V. It can vary within 
different locations in a city.

 

Ted Eckert

Microsoft Corporation

 

The opinions experessed are my own and do not necessarily reflect those of my 
employer.

 

 

 

From: John E Allen <09cc677f395b-dmarc-requ...@listserv.ieee.org 
 > 
Sent: Wednesday, October 28, 2020 3:00 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG  
Subject: [EXTERNAL] Re: [PSES] Electric Current Abroad

 

That worldstandards  list is, in reality, inaccurate w.r.t. the 3-phase 
voltages in the UK, and in countries where UK design practice prevails, where 
the “real world” 3-phase (STAR/WYE config) was/is around  415V (even  though 
the UK now “conforms” to the long-ago EU agreed level of 380V  because 380V 
+10% is 418V - i.e. = 415V, or “near enough”).  In reality that means the 
1-phase voltage is around 240-245V (recently measured 243V upstairs in this 
house).

 

Thus one should take that list with the proverbial “pinch of salt” as the “real 
world” voltages in some countries may be a “bit different” to the nominal ones.

 

John E Allen

West London, UK

 

From: Scott Aldous <0220f70c299a-dmarc-requ...@listserv.ieee.org 
 > 
Sent: 28 October 2020 21:19
To: EMC-PSTC@LISTSERV.IEEE.ORG  
Subject: Re: [PSES] Electric Current Abroad

 

Hi Doug,

 

Have you seen the list from worldstandards? It doesn't cover the phase 
configurations directly but does have a column for number of wires.

 

https://www.worldstandards.eu/electricity/three-phase-electric-power/ 

 

 

On Wed, Oct 28, 2020 at 1:48 PM Douglas Powell mailto:doug...@gmail.com> > wrote:

All,

 

In the distant past I struggled to learn what were the expected electrical 
voltage, frequency, and phase configurations (delta, wye, high-leg, etc) for 
commercial/industrial facilities in various countries. I know about IEC 60038 
standard voltages, but standard voltages don't always represent real life in 
specific locales. What I wanted was a good country-by-country listing for three 
phase power. The source I most often used was 
"http://www.ita.doc.gov/media/Publications/pdf/current2002FINAL.pdf 

 ". A 2002 reprint of the 1998 document, and now a broken link. After a generic 
search of  www.ita.doc.gov 

 , It seems it is no longer available.  

 

Yes, I realize the information was getting old but finding no up to date 
alternative, I searched elsewhere.  And besides, It's not likely that such 
things like this change rapidly.  

 

Google Books: Link

Wayback Machine: Link 

Re: [PSES] [EXTERNAL] Re: [PSES] Electric Current Abroad

[Ted Eckert]

As John noted, some are a “bit different”. For example, you will occasionally 
find Scott transformers in 
Japan. Then there is Brazil where you could find practically anything. 
Single-phase could be 110 V, 120 V, 127 V, 220 V or 230 V. It can vary within 
different locations in a city.

Ted Eckert
Microsoft Corporation

The opinions experessed are my own and do not necessarily reflect those of my 
employer.



From: John E Allen <09cc677f395b-dmarc-requ...@listserv.ieee.org>
Sent: Wednesday, October 28, 2020 3:00 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [EXTERNAL] Re: [PSES] Electric Current Abroad

That worldstandards  list is, in reality, inaccurate w.r.t. the 3-phase 
voltages in the UK, and in countries where UK design practice prevails, where 
the “real world” 3-phase (STAR/WYE config) was/is around  415V (even  though 
the UK now “conforms” to the long-ago EU agreed level of 380V  because 380V 
+10% is 418V - i.e. = 415V, or “near enough”).  In reality that means the 
1-phase voltage is around 240-245V (recently measured 243V upstairs in this 
house).

Thus one should take that list with the proverbial “pinch of salt” as the “real 
world” voltages in some countries may be a “bit different” to the nominal ones.

John E Allen
West London, UK

From: Scott Aldous 
<0220f70c299a-dmarc-requ...@listserv.ieee.org>
Sent: 28 October 2020 21:19
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Electric Current Abroad

Hi Doug,

Have you seen the list from worldstandards? It doesn't cover the phase 
configurations directly but does have a column for number of wires.

https://www.worldstandards.eu/electricity/three-phase-electric-power/

On Wed, Oct 28, 2020 at 1:48 PM Douglas Powell 
mailto:doug...@gmail.com>> wrote:
All,

In the distant past I struggled to learn what were the expected electrical 
voltage, frequency, and phase configurations (delta, wye, high-leg, etc) for 
commercial/industrial facilities in various countries. I know about IEC 60038 
standard voltages, but standard voltages don't always represent real life in 
specific locales. What I wanted was a good country-by-country listing for three 
phase power. The source I most often used was 
"http://www.ita.doc.gov/media/Publications/pdf/current2002FINAL.pdf".
 A 2002 reprint of the 1998 document, and now a broken link. After a generic 
search of  
www.ita.doc.gov,
 It seems it is no longer available.

Yes, I realize the information was getting old but finding no up to date 
alternative, I searched elsewhere.  And besides, It's not likely that such 
things like this change rapidly.

Google Books: 
Link
Wayback Machine: 
Link