Re: Japan mains voltage

[T.Sato]

On Fri, 7 Jun 2002 16:33:16 -0500,
  ggars...@us.tuv.com wrote:

> Standards aside, one other practical point to consider (all countries), the
> +/- 10% (or whatever) that may be quoted by (or required of) the utility
> company applies only to the point at which they deliver to their customer.
>
> There will then be an additional volt-drop within the customer's
> installation, from the utility supply point to the equipment connection. In
> a large industrial facility (factory), this may be significant.

In Japan, utility companies should maintain "100V" mains voltage
within 101V +/- 6V at utility supply point.

I think it is rare to mains voltage goes below 90V at the equipment
point in general, but I think it not bad idea to provide more margin
by designing equipment to work perfectly witin 85V to 110V.

Regards,
Tom

--
Tomonori Sato  
URL: http://member.nifty.ne.jp/tsato/


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Re: Japan mains voltage

[ggarside]

Standards aside, one other practical point to consider (all countries), the
+/- 10% (or whatever) that may be quoted by (or required of) the utility
company applies only to the point at which they deliver to their customer.
There will then be an additional volt-drop within the customer's
installation, from the utility supply point to the equipment connection. In
a large industrial facility (factory), this may be significant.

The volt-drop might tend to be higher in 100V than 230V systems. Also, in
many cases, the utility will be providing supply to a building or an entire
factory site, at MV voltages, and the customer will be responsible for
transforming to 100V (or 110/115/120/230/240V, etc.), and they will usually
be free to decide whether they want to bother keeping to the +/- 10% range
or not.

best regards, glyn

--
TUV Rheinland of North America, Inc.
Product Safety & Quality
Industrial Machinery Division (Chicago Office)

Glyn R. Garside
Senior Engineer
1945 Techny Rd, Unit 4
NORTHBROOK, IL 60062-5357, USA
Tel  (847)562-9888 ext 25
mailto:ggars...@us.tuv.com
http://www.us.tuv.com


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Re: Japan mains voltage

[Neil Helsby]

Yes, we have experienced similar problems at some sites in Japan. 
This is one of the reasons why we specify our power supplies (we buy 
them in) to cover the range from 85 V.


Regards,

Neil Helsby


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RE: Japan mains voltage

[Robert Wilson]

In designing power supplies, it is common to use nominal mains voltage
+/-15% (e.g. in North America, 115 +/-15%, or 98V to 132V) as a design
guideline. The same +/-15% is generally true for European 230 V designs.
Thus, using +/-10% for Japan seems a little skimpy. Given the rather odd
collection of voltages, line frequencies and power systems in use there,
if it were me, I'd allow for AT LEAST +/-15%. 

Bob Wilson
TIR Systems Ltd.
Vancouver.

-Original Message-
From: Van Compernolle, Eric [mailto:eric.vancomperno...@barco.com] 
Sent: June 4, 2002 8:22 AM
To: 'emc-p...@ieee.org '
Subject: Japan mains voltage


Hello,

As you probably know  the mains voltage for Japan is 100V. 
For safety we are testing up to - 10%: 90 V.
However for some situations in Japan ,  it seems you can even  expect
85 V.
So we are planning to define a  general rule that a product for Japan
must
handle 85 V.
Is this low voltage rule known or common use in your company?


best regards,

Van Compernolle Eric
Reliability Manager 
Barco Projection Systems
Noordlaan 5
8520 Kuurne
Phone:+32 56 368 373
Fax:+32 56 368 355
mailto:eric.vancomperno...@barco.com
http://www.barco.com


> 

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RE: Japan mains voltage

[ron_wellman]

Hello Eric,

Some companies have environmental test programs that subject their products to 
all types of power line conditions that are not covered in regulatory 
requirements. As far as line voltage tolerance testing, this depends on the 
specifications you publish externally for your products. However, what 
tolerance you test to internally may be greater than what you publish with a 
product specification.

It just so happens, when I was with the old Hewlett-Packard, we usually tested 
to +/- 12% for test and measurement products when the published tolerance was 
+/- 10%. However, these products were intended for light industrial and 
laboratory environments.

Finally, to the best of my knowledge, I haven't heard of Japanese line voltages 
dropping below 90 Vac.

Regards,
+=+
|Ronald R. Wellman|Voice : 408-345-8229   |
|Agilent Technologies |FAX   : 408-553-2412   |
|5301 Stevens Creek Blvd.,|E-Mail: ron_well...@agilent.com|
|Mailstop 54L-BB  |WWW   : http://www.agilent.com |
|Santa Clara, California 95052 USA|   |
+=+


-Original Message-
From: Van Compernolle, Eric [mailto:eric.vancomperno...@barco.com]
Sent: Tuesday, June 04, 2002 8:22 AM
To: 'emc-p...@ieee.org '
Subject: Japan mains voltage



Hello,

As you probably know  the mains voltage for Japan is 100V. 
For safety we are testing up to - 10%: 90 V.
However for some situations in Japan ,  it seems you can even  expect  85 V.
So we are planning to define a  general rule that a product for Japan must
handle 85 V.
Is this low voltage rule known or common use in your company?


best regards,

Van Compernolle Eric
Reliability Manager 
Barco Projection Systems
Noordlaan 5
8520 Kuurne
Phone:+32 56 368 373
Fax:+32 56 368 355
mailto:eric.vancomperno...@barco.com
http://www.barco.com


> 

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Re: Japan mains voltage

[John Woodgate]

I read in !emc-pstc that Darren Pearson  wrote
(in <001a01c1ba0c$c7243fa0$0a00a8c0@darrendesktop>) about 'Japan mains
voltage', on Wed, 20 Feb 2002:
>Can anyone tell me what the mains voltage is in Japan,
> 
>I  think it is 110V but I do not know the frequency.
> 
It's 100 V, and half the country has 50 Hz and half has 60 Hz.
-- 
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk 
After swimming across the Hellespont, I felt like a Hero.
PLEASE do NOT copy news posts to me by E-MAIL!

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RE: Japan mains voltage

[WELLMAN,RON (A-PaloAlto,ex1)]

The attached GIF image shows frequency allocation in Japan.
 

Regards, 
+=+ 
|Ronald R. Wellman|Voice : 408-345-8229   | 
|Agilent Technologies |FAX   : 408-553-2412   | 
|5301 Stevens Creek Blvd.,|E-Mail: ron_well...@agilent.com| 
|Mailstop 54L-BB  |WWW   : http://www.agilent.com
  | 
|Santa Clara, California 95052 USA|   | 
+=+ 
| "Common sense is the collection of prejudices acquired by age   | 
|  eighteen." - Albert Einstein   | 
+=+ 

-Original Message-
From: Darren Pearson [mailto:dar...@genesysibs.com]
Sent: Wednesday, February 20, 2002 4:46 AM
To: emc-p...@ieee.org
Subject: Japan mains voltage


Can anyone tell me what the mains voltage is in Japan,
 
I  think it is 110V but I do not know the frequency.
 
apart from this, does any one know of a web site  that gives information
about the mains voltage and frequency of various countries ?
 
  Regards Darren.
 
 
Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com  
web: www.genesysibs.com  

<>

RE: Japan mains voltage

[Brian Epstein]

The "Guide to Worldwide Plug/Socket Patterns and Power Mains (Single Phase)"
reports Japan as 100V, 50/60 Hz.  See:

http://www.panelcomponents.com/guide.htm

Brian Epstein
Sr Regulatory Compliance Engineer
Veeco Metrology
112 Robin Hill Rd
Santa Barbara, CA 93117
brian.epst...@veeco.com

-Original Message-
From: Darren Pearson
To: emc-p...@ieee.org
Sent: 2/20/2002 4:46 AM
Subject: Japan mains voltage

Can anyone tell me what the mains voltage is in Japan,
 
I  think it is 110V but I do not know the frequency.
 
apart from this, does any one know of a web site  that gives information
about the mains voltage and frequency of various countries ?
 
  Regards Darren.
 
 
Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com  
web: www.genesysibs.com  

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Re: Japan mains voltage

[MartinJP]

Darren,

The information that I have seen from the two sources listed below is that
Japan is nominally 100V 50/60 Hz.  The 50 Hz is primarily in Eastern Japan
(Tokyo, Kawasaki, Sapporo and Yokohoma).  The 60 Hz is primarily in Western
Japan (Osaka, Kyoto, Nagoya and Hiroshima).

Check out the two web sites below.  They both contain lists for voltages
and frequencies for around the world.

http://www.interpower.com/guide.htm

http://kropla.com/electric2.htm

Regards

Joe Martin
EMC/Product Safety Engineer
Applied Biosystems





 
"Darren Pearson"
 
To:   
 
Sent by:   cc:  
 
owner-emc-pstc@majordomSubject: Japan mains 
voltage  
o.ieee.org  
 

 

 
02/20/02 04:46 AM   
 
Please respond to   
 
"Darren Pearson"
 

 

 




Can anyone tell me what the mains voltage is in Japan,

I  think it is 110V but I do not know the frequency.

apart from this, does any one know of a web site  that gives information
about the mains voltage and frequency of various countries ?

  Regards Darren.


Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com
web: www.genesysibs.com




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RE: Japan mains voltage

[Robert Wilson]

One of the Japanese islands also has a 50Hz power grid. Apparently it's
a real dog's breakfast there, as far as AC power systems are concerned.
The voltage is 100 V, not 110V (as the original poster had mentioned).
 
Bob Wilson
TIR Systems Ltd.
Vancouver.

RE: Japan mains voltage

[richwoods]

The standard voltages are 100 V (the standard outlet) and 200 V, and one
half of the country uses 50 Hz while the other half uses 60 Hz. The division
is North and South, but I don't recall which half uses 50 Hz.
 
Richard Woods 
Sensormatic Electronics 
Tyco International 

-Original Message-
From: Darren Pearson [mailto:dar...@genesysibs.com]
Sent: Wednesday, February 20, 2002 7:46 AM
To: emc-p...@ieee.org
Subject: Japan mains voltage


Can anyone tell me what the mains voltage is in Japan,
 
I  think it is 110V but I do not know the frequency.
 
apart from this, does any one know of a web site  that gives information
about the mains voltage and frequency of various countries ?
 
  Regards Darren.
 
 
Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com  
web: www.genesysibs.com  

RE: Japan mains voltage

[Peter Tarver]

Darren -

the Japan mains voltage in the range you request is 100V.
As I understand it, though this is open to correction, Japan
has both 50Hz and 60Hz distribution systems, depending upon
where you are located, even on the large island.  I do note,
however, that the US Dept. of Commerce's publication,
"Electric Current Abroad," indicates only 50Hz.  I have
other sources that indicate both 50Hz and 60Hz.


Regards,

Peter L. Tarver, PE
Product Safety Manager
Sanmina-SCI Homologation Services
peter.tar...@sanmina-sci.com

-Original Message-
From: Darren Pearson
Sent: Wednesday, February 20, 2002 4:46 AM

Can anyone tell me what the mains voltage is in Japan,

I  think it is 110V but I do not know the frequency.

apart from this, does any one know of a web site  that gives
information about the mains voltage and frequency of various
countries ?

  Regards Darren.


Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com
web: www.genesysibs.com


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RE: Japan mains voltage

[David_Sterner]

Much of Japan is 100V 50Hz (worst case for transformers).  Japan approval
should cover 50/60Hz.  Hotels generate a 120V 60Hz for US appliances.
 
The 200V supply is more complicated.  I had a JEOL electron microscope that
wanted 3-phase 200 volts.  They would not let us run it on 208V 3-phase and
we had to install an elaborate conversion network.
 
David

-Original Message-
From: Crabb, John [mailto:jo...@exchange.scotland.ncr.com]
Sent: Wednesday, February 20, 2002 8:33 AM
To: emc-p...@ieee.org
Subject: RE: Japan mains voltage


According to "World Electricity Supplies" from BSI,
voltage is 200/100, 60 Hz.
We have certainly produced 100V 60 Hz "specials" for
Japan.
 
Regards,
John Crabb, Development Excellence (Product Safety) , 
NCR  Financial Solutions Group Ltd.,  Discovery Centre, 3 Fulton Road,
Dundee, Scotland, DD2 4SW 
E-Mail :john.cr...@scotland.ncr.com 
Tel: +44 (0)1382-592289  (direct ). Fax +44 (0)1382-622243.   VoicePlus
6-341-2289. 

-Original Message-
From: Darren Pearson [mailto:dar...@genesysibs.com]
Sent: 20 February 2002 12:46
To: emc-p...@ieee.org
Subject: Japan mains voltage


Can anyone tell me what the mains voltage is in Japan,
 
I  think it is 110V but I do not know the frequency.
 
apart from this, does any one know of a web site  that gives information
about the mains voltage and frequency of various countries ?
 
  Regards Darren.
 
 
Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com <mailto:dar...@genesysibs.com> 
web: www.genesysibs.com <http://www.genesysibs.com> 

RE: Japan mains voltage

[Mavis, Robert]

Japan Mains Voltage is 100V. The north half of the country is 50 Hz and the
South Half is 60 Hz. Or is it vice-versa...

-Original Message-
From: Darren Pearson [mailto:dar...@genesysibs.com]
Sent: Wednesday, February 20, 2002 4:46 AM
To: emc-p...@ieee.org
Subject: Japan mains voltage


Can anyone tell me what the mains voltage is in Japan,
 
I  think it is 110V but I do not know the frequency.
 
apart from this, does any one know of a web site  that gives information
about the mains voltage and frequency of various countries ?
 
  Regards Darren.
 
 
Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com  
web: www.genesysibs.com  

Re: Japan mains voltage

[T.Sato]

On Wed, 20 Feb 2002 12:46:19 -,
  "Darren Pearson"  wrote:

> Can anyone tell me what the mains voltage is in Japan,
> 
> I  think it is 110V but I do not know the frequency.

The nominal voltage is 100V, and the frequency can 50Hz or
60Hz depends to the area.

> apart from this, does any one know of a web site that gives
> information about the mains voltage and frequency of various
> countries ?

Some URLs are listed in the section 2.2 of the s.e.e.c FAQ, at
http://users.metro2000.net/~purwinc/compliance_faq.html

Regards,
Tom

--
Tomonori Sato  
URL: http://member.nifty.ne.jp/tsato/
   xvkbd-2.1 (virtual keyboard for X) available 

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Re: Japan mains voltage

[kkeegan]

>
>Daren:

The voltage in Japan is 100VAC, however the frequency is 50 or 60HZ
depending where you are in the country.

Regards

Kevin P.Keegan

KES & Associates
Ottawa, Ontario
Canada
>
>Can anyone tell me what the mains voltage is in Japan,
>
>I  think it is 110V but I do not know the frequency.
>
>apart from this, does any one know of a web site  that gives information >about
the mains voltage and frequency of various countries ?
>
>  Regards Darren.
>
>
>Darren Pearson
>Radio & Telecom Approval Services
>Genesys
>Singleton Court, Wonastow Road
>Monmouth, NP25 5JA
>UK
>Tel: +44 1600 710300
>Fax: +44 1600 710301
>email: dar...@genesysibs.com
>web: www.genesysibs.com
>
>
>
>---
>This message is from the IEEE EMC Society Product Safety
>Technical Committee emc-pstc discussion list.
>
>Visit our web site at:  http://www.ewh.ieee.org/soc/emcs/pstc/
>
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---
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RE: Japan mains voltage

[Naftali Shani]

A good source is http://kropla.com/electric2.htm
 .
 
According to that site: 
Japan100V50/60 Hz*   A, B 
*Eastern Japan 50 Hz (Tokyo, Kawasaki, Sapporo, Yokohoma, and Sendai);
Western Japan 60 Hz (Osaka, Kyoto, Nagoya, Hiroshima
 
The plugs (A, B) are shown on http://kropla.com/!ab.htm
 .
 

Regards,
Naftali Shani, Catena Networks (www.catena.com)
307 Legget Drive, Kanata, Ontario, Canada K2K 3C8
613.599.6430/866.2CATENA (X.8277); C 295.7042; F 599.0445
E-mail: nsh...@catena.com 

-Original Message-
From: Darren Pearson [mailto:dar...@genesysibs.com]
Sent: Wednesday, February 20, 2002 7:46 AM
To: emc-p...@ieee.org
Subject: Japan mains voltage


Can anyone tell me what the mains voltage is in Japan,
 
I  think it is 110V but I do not know the frequency.
 
apart from this, does any one know of a web site  that gives information
about the mains voltage and frequency of various countries ?
 
  Regards Darren.
 
 
Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com  
web: www.genesysibs.com  

RE: Japan mains voltage

[Hare, Paul]

The table on this page is a pretty good reference:
 
http://www.voltageconverters.com/voltageguide.htm
 

Paul Hare   e: ph...@pirus.com 
Compliance Engineer w: 978.206.9179 
Pirus Networks  f: 978.206.9199 
43 Nagog Park   c: 508.450.0376 
Acton, MA 01720 i: www.pirus.com 

-Original Message-
From: Darren Pearson [mailto:dar...@genesysibs.com]
Sent: Wednesday, February 20, 2002 7:46 AM
To: emc-p...@ieee.org
Subject: Japan mains voltage


Can anyone tell me what the mains voltage is in Japan,
 
I  think it is 110V but I do not know the frequency.
 
apart from this, does any one know of a web site  that gives information
about the mains voltage and frequency of various countries ?
 
  Regards Darren.
 
 
Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com  
web: www.genesysibs.com  

Re: Japan mains voltage

[JRadomski]

Darren,

The mains voltage in Japan is 100V +/- 10%. Half of Japan is supplied from
a 50Hz system and another half is supplied from a 60Hz system.

John Radomski
Clare




 
"Darren Pearson"
 
   To:
 
Sent by:  cc:   
 
owner-emc-pstc@majordom   Subject: Japan mains 
voltage   
o.ieee.org  
 

 

 
02/20/02 07:46 AM   
 
Please respond to   
 
"Darren Pearson"
 

 

 




Can anyone tell me what the mains voltage is in Japan,

I  think it is 110V but I do not know the frequency.

apart from this, does any one know of a web site  that gives information
about the mains voltage and frequency of various countries ?

  Regards Darren.


Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com
web: www.genesysibs.com




---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.

Visit our web site at:  http://www.ewh.ieee.org/soc/emcs/pstc/

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 majord...@ieee.org
with the single line:
 unsubscribe emc-pstc

For help, send mail to the list administrators:
 Ron Pickard:  emc-p...@hypercom.com
 Dave Heald:   davehe...@mediaone.net

For policy questions, send mail to:
 Richard Nute:   ri...@ieee.org
 Jim Bacher: j.bac...@ieee.org

All emc-pstc postings are archived and searchable on the web at:
http://ieeepstc.mindcruiser.com/
Click on "browse" and then "emc-pstc mailing list"

RE: Japan mains voltage

[Crabb, John]

According to "World Electricity Supplies" from BSI,
voltage is 200/100, 60 Hz.
We have certainly produced 100V 60 Hz "specials" for
Japan.
 
Regards,
John Crabb, Development Excellence (Product Safety) , 
NCR  Financial Solutions Group Ltd.,  Discovery Centre, 3 Fulton Road,
Dundee, Scotland, DD2 4SW 
E-Mail :john.cr...@scotland.ncr.com 
Tel: +44 (0)1382-592289  (direct ). Fax +44 (0)1382-622243.   VoicePlus
6-341-2289. 

-Original Message-
From: Darren Pearson [mailto:dar...@genesysibs.com]
Sent: 20 February 2002 12:46
To: emc-p...@ieee.org
Subject: Japan mains voltage


Can anyone tell me what the mains voltage is in Japan,
 
I  think it is 110V but I do not know the frequency.
 
apart from this, does any one know of a web site  that gives information
about the mains voltage and frequency of various countries ?
 
  Regards Darren.
 
 
Darren Pearson
Radio & Telecom Approval Services
Genesys
Singleton Court, Wonastow Road
Monmouth, NP25 5JA
UK
Tel: +44 1600 710300
Fax: +44 1600 710301
email: dar...@genesysibs.com  
web: www.genesysibs.com