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'[EE]: 220VAC power in the UK?'
2000\07\10@122533 by Jason Wolfson

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I have a PIC based controller that has your basic transformer based power
supply.
Setup to run at 220VAC it works great in the US and in Holland but I'm
getting reports
of problems from customers in the UK.

What is the difference with UK power?

Thanks,

Jason Wolfson

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Lipidex Corp
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   Duxbury MA 02332
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2000\07\10@125429 by James Paul

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Jason,

Frequency possibly?   Or how about brownouts?   Is the UK voltage
stable?  Food for thought.

                                        Regards,

                                          Jim


On Mon, 10 July 2000, Jason Wolfson wrote:

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jimspamKILLspamjpes.com

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2000\07\10@125851 by Peter Schultz

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Jason,
Isn't UK 240V instead of 220V ?
Peter

-----Original Message-----
From: James Paul [.....jimKILLspamspam.....JPES.COM]
Sent: Monday, July 10, 2000 9:53 AM
To: EraseMEPICLISTspam_OUTspamTakeThisOuTMITVMA.MIT.EDU
Subject: Re: [EE]: 220VAC power in the UK?


Jason,

Frequency possibly?   Or how about brownouts?   Is the UK voltage
stable?  Food for thought.

                                        Regards,

                                          Jim


On Mon, 10 July 2000, Jason Wolfson wrote:

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2000\07\10@125857 by Ricard / Modem

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It is not 220V/50Hz in the UK. It is 240V/50Hz. That is probably the reason
of your problems.
Regards,
Ricard Camprodon
TESI S.L.

http://www.tesi.es

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2000\07\10@131717 by Richard Rooney
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Hi Jason,
        It's a common misconception that we outside the U.S. all use
220VAC. Check out the following table and you'll see some interesting
deviations from 220VAC. The U.K.'s 240VAc may be giving you some problems if
your power supply is very basic ...

http://www.wire.net.au/%7Eczar/InfoAlley/0896/05/performa.html

Richard.


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2000\07\10@132723 by Oliver Broad

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----- Original Message -----
From: Jason Wolfson <RemoveMEjasonspamTakeThisOuTLIPIDEX.COM>
To: <PICLISTEraseMEspam.....MITVMA.MIT.EDU>
Sent: Monday, July 10, 2000 5:23 PM
Subject: [EE]: 220VAC power in the UK?


>
> What is the difference with UK power?
>

UK tends to be a bit higher for a start.

The spec for most of  Europe is 230v -10%,+6%
The spec for UK is 230v +10%,-6%

The tolerances are fudged to allow the old national standard, 240V.

We're also on 50Hz, not 60, which takes the transformer a bit nearer
saturation.

Oliver.

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2000\07\10@154444 by Andy Howard

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> From: "Jason Wolfson" <EraseMEjasonspamLIPIDEX.COM>
> I have a PIC based controller that has your basic transformer based power
> supply.
> Setup to run at 220VAC it works great in the US and in Holland but I'm
> getting reports
> of problems from customers in the UK.

> What is the difference with UK power?


The main difference is that UK power can run 10 volts or so higher than
mainland Europe does.

Have a look at http://www.lyons.demon.co.uk/seecfaq2.txt
where you will find an excellent FAQ containing more info than anyone would
care to remember about the subject.

Section 2.2.1 is probably where you want to start, though the section on CE
marking written for non-european manufacturers might be of interest too.















.

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2000\07\10@235316 by Russell McMahon

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May be 50 Hz versus 60Hz
A 50Hz transformer will be less fluxed at 60 Hz and may not have the
regulation or oomph (technical term) you expect.

Going the other way a 60Hz transformer will draw more magnetising current at
50 Hz and if the iron has been pushed all the way up to the knee of the
magnetisation curve (which real people do to make maximum use of the iron)
then it can get veeeery hot on 50 Hz.

Also note that mains may be 220, 230 or 240 depending where you are.
A transformer set for the low end can be severely challenged at the other
end of the range in a worst case design.

What is the nature of the problems?

On the web you can find lists of voltage and frequency for most places on
earth.



     Russell McMahon
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{Original Message removed}

2000\07\11@015308 by Nigel Goodwin

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In message <RemoveMENCBBLCINIKMHAGNCNIIMCECAEDAA.jasonEraseMEspamEraseMElipidex.com>, Jason
Wolfson <RemoveMEjasonspam_OUTspamKILLspamLIPIDEX.COM> writes
>I have a PIC based controller that has your basic transformer based power
>supply.
>Setup to run at 220VAC it works great in the US and in Holland but I'm
>getting reports
>of problems from customers in the UK.
>
>What is the difference with UK power?

All of the EEC is standardised at 230v mains, however, the UK doesn't
use the same tolerance as the rest of Europe - so UK mains can be 240v
and still be within permissible limits. No where in the EEC uses 220v
anymore, so you shouldn't supply 220v equipment to any EEC countries.
--

Nigel.

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2000\07\11@015328 by Nigel Goodwin

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In message <EraseME20000710165242.27410.cpmtaspamspamspamBeGonec004.sfo.cp.net>, James Paul
<RemoveMEjimKILLspamspamJPES.COM> writes
> Jason,
>
> Frequency possibly?   Or how about brownouts?   Is the UK voltage
> stable?  Food for thought.

The UK mains frequency is highly accurate, the voltage is highly stable,
and 'brownouts' are exceedingly rare. I suspect the UK has one of the
most reliable national grids anywhere in the world!.

I live in a small village, and in 1990 we had a really severe winter and
snow storms brought down huge areas of electrical distribution cables,
we had no electric, water, or telephones for almost two weeks!. After
this I bought a petrol generator, and I've had no occasion to use it
during the last ten years!.
--

Nigel.

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2000\07\14@031821 by Kevin Blain

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No it's not! The UK AND Holland is 230V @ 50Hz (It's PAN european - i.e.
everyone in europe meets this.)

The tolerance on the voltage (pan european) is +/- 10%, i.e maximum 253V
minimum 207V.

The tolerance on the mains frequency is +/1 1%, but it must average out to
zero over any 24hr period.

Any power supplys sold in europe must accept these supply inputs.

Kevin

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