Just to clarify the position in the UK, although it was stated below that the nominal voltage is 415V, I am almost certain that the DECLARED VOLTAGE is 400V. I base this on the fact that domestic consumers were advised that the declared voltage changed from 240V to 230V, and 230 X 1.732 = 400V, and my 1996 BSI "World Electricity Supplies" shows the UK voltage (and the Italy voltage) to be 400/230V. In practice, the voltage didn't change - we went from 240 +/- 6% = 225.6 - 254.4, to 230 -6%/+10% = 216.2 - 253, and the "old" voltage fits within the window of the "new" voltage, if you accept that 253 and 254.4 are near enough the same. Regards, John Crabb, Development Excellence (Product Safety) , NCR Financial Solutions Group Ltd., Discovery Centre, 3 Fulton Road, Dundee, Scotland, DD2 4SW E-Mail :[email protected] Tel: +44 (0)1382-592289 (direct ). Fax +44 (0)1382-622243. VoicePlus 6-341-2289.
-----Original Message----- From: Paolo Gemma [mailto:[email protected]] Sent: 17 January 2002 17:56 To: [email protected] Cc: [email protected] Subject: Re: What about 480 VAC in Europe? RE: 2 Phases in North America Also Italy have a nominal phase to phase of 380VAC. Ciao Paolo At 11:20 1/17/02 +0000, 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 voltage harmonization e.g.. Belgium is a nominal 380VAC. Other have not changed as they fall within the tolerance limits already, e.g. the UK is a nominal 415VAC Generally with switch mode supplies, provided your incoming wiring feed is changed to take into account the Star and not Delta, configuration. They can accommodate the voltage difference. Terry Meck wrote: > 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 Europe. !?! > How do you see this 480 VAC being impacted by the EN 61000-3-3 harmonic standard? > > Thanks for any input in advance! > > Best regards, > Terry J. Meck > Senior Compliance/Test Engineer > [email protected] >
