The utilities have buck boost transformers with tap changers in rural areas. If the volatage is low or high the tap will automatically change to a new position increasing or decreasing the voltage. They look like a transformer and they have a meter on the pole to determine setting and the voltage or boost or buck. Most distrubution is three phase so you will find three of these frequently over 1/2 miles of less. sometimes you will find all three on a pair of power of poles Darryl
--- On Mon, 12/20/10, Mark Frye <ma...@berkeleysolar.com> wrote: > From: Mark Frye <ma...@berkeleysolar.com> > Subject: Re: [RE-wrenches] Low grid voltage fix > To: "'RE-wrenches'" <re-wrenches@lists.re-wrenches.org> > Date: Monday, December 20, 2010, 11:05 AM > How do utilites go about adjusting > the voltage at any given site? Adjustable > taps on the transformers on the poles? Do they have to go > back to the > nearest sub-station? Re-arrange the distrubution of > customers across > differenat areas of the grid. > > I am in the dark here. > > Mark Frye > Berkeley Solar Electric Systems > 303 Redbud Way > Nevada City, CA 95959 > (530) 401-8024 > www.berkeleysolar.com > > -----Original Message----- > From: re-wrenches-boun...@lists.re-wrenches.org > [mailto:re-wrenches-boun...@lists.re-wrenches.org] > On Behalf Of August Goers > Sent: Monday, December 20, 2010 8:54 AM > To: RE-wrenches > Subject: Re: [RE-wrenches] Low grid voltage fix > > Hi Joel - > > Have you tried getting PG&E out to check the line > voltages? I believe they > need to be +/- 5% steady state (ANSI Range A) or possibly > +/- 10% (Range > B) or they need to fix it. 105 V is way too low. > > Here in the Bay Area I have found that PG&E is very > receptive to resolving > line voltage issues. They normally have a tech out to the > site within a few > hours after making a service call... > > Best, > > August > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
