Hello Andrew, et al; "World Electricity Supplies" which has been referenced in this thread is available from the Int'l Product Safety Bookshop which can be found on the Safety Link at:
<www.safetylink.com/bookshop.html> Regards, Art Michael ------------------------------------------------------------------------------ On Fri, 18 Jan 2002, Andrew Carson wrote: > > Peter > > The star distribution with the center point neutral runs from the > distribution grid substation to the facility. So the utility company > provides the consumer with the four wires, which they then distribute > as required. > > In a residential area, the three phases are split every third house, > providing each residence with a single phase and a neutral. The logic > here is that if one phase fails, the whole street is not plunged into > darkness. > > A very good handbook I recommend is "World Electricity Supplies" > published by BSi Standards. Covers all the worlds distribution voltages > up to 22kV grid level. Plus shows you what phase configuration is used > by the generator to distribute the power. > > Peter Tarver wrote: > > > Andrew - > > > > Please clarify something for me. Is the utility > > distribution star configured (WYE connected), rather than > > DELTA? Or are you speaking only wrt typical distribution > > within a building? (In the US, "distribution" is generally > > used to reference utility power distribution, for instance, > > "distribution transformer," as opposed to "facility > > transformer.") > > > > I ask because DELTA is used by utilities in the US and > > Canada to simplify connections save the unnecessary cost of > > running a Neutral (star reference point conductor) between > > distribution transformers (or so it was 'splained to me, > > Lucy). > > > > Regards, > > > > Peter L. Tarver, PE > > Product Safety Manager > > Sanmina-SCI Homologation Services > > peter.tar...@sanmina-sci.com > > > > > From: Andrew Carson > > > > > > Terry > > > > > > Then nominal EU phase to phase voltage is 400VAC > > > with a +6/-10% Tolerance. Distribution is Three > > > Phase Star, Earthed Neutral. > > > > > > Snip < > > > > > > Andrew Carson - Senior Compliance Engineer, Xyratex, UK > > > Phone: +44 (0)23 9249 6855 Fax: +44 (0)23 9249 6014 > > -- > > Andrew Carson - Senior Compliance Engineer, Xyratex, UK > Phone: +44 (0)23 9249 6855 Fax: +44 (0)23 9249 6014 > > > > ------------------------------------------- > 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/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > 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: > No longer online until our new server is brought online and the old > messages are imported into the new server. > ------------------------------------------- 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/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org 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: No longer online until our new server is brought online and the old messages are imported into the new server.
