Re: [PSES] 3 phase 408V in EU and Emissions Classification

Carl, Standard AC mains voltage in the EU is 400V +10%, -5%, 3P. This accommodates everything from 380 V nominal legacy systems through 440 V nominal legacy systems. The same is done for 1P systems: 230V +10%, -5%, so the 408 V nominal that your customer is asking for is accommodated within

Re: [PSES] 3 phase 408V in EU and Emissions Classification

Doug, Excellent response. So if I'm understanding you correctly, the 408 V ac supplied to an apartment complex can be via the low-voltage public AC mains. Thanks very much, Carl On Thu, 19 Nov 2015 11:13:00 -0500, Douglas Nix wrote: Carl, Standard AC mains voltage in

Re: [PSES] 3 phase 408V in EU and Emissions Classification

Carl, An apartment complex is a shared low-voltage distribution network, and would be viewed as Class B. The concern is that conducted emissions from one user will affect equipment in another user’s premises, since there is no attenuation by the substation equipment and the intervening MV

Re: [PSES] 3 phase 408V in EU and Emissions Classification

Thank you John. This is very helpful. Carl On Thu, 19 Nov 2015 11:30:29 -0500, John Allen wrote: The answer regarding 408V – which is a N.American standard voltage ) - is "possible but doubtful" on any predictable basis because the defined voltage is

Re: [PSES] 3 phase 408V in EU and Emissions Classification

The answer regarding 408V - which is a N.American standard voltage ) - is "possible but doubtful" on any predictable basis because the defined voltage is 2301Ph / 400V 3Ph with a tolerance of +/-10%, and has been for decades, but the actual voltage will vary from country to country - so the UK

[PSES] 3 phase 408V in EU and Emissions Classification

Group, Please forgive my ignorance, but I would appreciate some education concerning 3 phase power in the EU generally. I'm looking at a water handling system that is to employ 408 V ac, 3 phase in the EU. It would be used with HVAC systems and I'm told that it can be used in apartment

Re: [PSES] 3 phase 408V in EU and Emissions Classification

I fully agree with Doug on the need for Class B compliance (certainly on emissions) because the use of “industrial” equipment (especially motorised) in residential and “light commercial” premises can be a notably source of interference to equipment in surrounding rooms as most of that will be