The utility runs the grid pretty hot around here, and it's common to have 250vac no load at the meter already... this is better for loads, but it is a problem for grid tied solar, because they are, by law, required to shut off around 260 to 264 volts -- and if you have any voltage drop, it's not hard to get there. We have problems with systems shutting off because the grid voltage is too high quite a bit. I've almost never seen grid voltage low. Maybe this is a Colorado thing.
Z On Fri, Jul 12, 2013 at 8:27 AM, Roland Wiench <[email protected]> wrote: > When you do have the next place rewire to a higher voltage, make sure you > tell the contractor to install 125/250 vac. This voltage is available at > the transformer and when we install transformers, this is what the voltage > is tap for at no load. > > As the load increases, it is normal for the voltage to drop to 120/240 > vac. Below 115/230 vac, equipment and motors do not run well. > > The last time we had 110/220 vac was in 1933. Increasing loads where > dropping this voltage to 100/200 vac, so we had to install new transformers > and initially tap them 115/230 vac so motors had the correct voltage. > > In some areas of the country, we step this up to 120/240 vac at load or > 125/250 vac no load. > > Roland > ----- Original Message ----- > From: SLPinfo.org<mailto:[email protected]> > To: Electric Vehicle Discussion List<mailto:[email protected]> > Sent: Friday, July 12, 2013 6:56 AM > Subject: Re: [EVDL] using dual voltage charger > > > Scott, > > Appreciate the input. Trojan recommends 17-22 amps (10-13% of C) which > is > consistent with your Lester manual so I'm fast coming to the same > conclusion that I need to get up to 220v charging soon. But I don't have > that in my garage and we're moving soon so I'm not about to invest in a > rewiring job. > > I probably will try to limp along at 110v until after the move and then > get > new batteries and,set up for 220v at the same time. Although 450-500 > cycles is clearly low even for a lead acid pack it's considerably better > than the 175 I got from the 12v batts I had in my previous EV > http://www.evalbum.com/1974<http://www.evalbum.com/1974> so I'm not > complaining. Hopefully I'll do > better with the next pack by charging at 220v. > > -Peter > On Jul 11, 2013 10:31 PM, "85VWCabrioletEV" <[email protected] > <mailto:[email protected]>> wrote: > > > > > >Hi folks, > > > > >My Quick Charge Select-A-Charge charger is getting old as are my lead > acid > > >batteries in my S-10 http://www.evalbum.com/3739< > http://www.evalbum.com/3739>. I've been using them > > for > > >about 2 years and have about 450 cycles on them. > > > > >For the past several weeds the charger never seems to get up to the > target > > >voltage. The display seems to get stuck at about 55-60% (varies a > little > > >from one day to the next) and then it just times out after about 11 > hours. > > >Using my DVM it looks like it's hitting about 135V or so which is > quite > > low > > >for my 120V pack. Clearly I'm undercharging my batteries. I sort of > knew > > >this would happen as I bought the charger used and it's only rated for > > >batteries up to 150 AH and mine are 170 AH Trojan T-875s. It also > only > > >puts out 10 amps at 110V so I may have been undercharging since day 1. > > > > Hi Peter, > > i am no expert on the subject, but when I recently purchased my 85 VW > > Cabriolet conversion, it came with an old Lester Electronics off board > > charger that has both 110vac and 220vac input. The Lester charger is a > > 120v > > charger which matches the 120v Flooded Lead Acid traction pack in my VW > > Cabriolet (20 New - US Battery US-125 xc2 6v batteries rated at > 242ah). My > > Lester also only outputs 10 amps at 110vac and jumps to approximately > 24 > > amps initial output at 220vac. The Lester manual specifically states > to > > use > > the 110vac input only for emergency charging, and that continued > charging > > at > > 110vac would result in under charging of the battery pack. Therefore I > > believe you may indeed have been undercharging since day 1. > > > > US Battery recommends initial bulk charge at 10% of rated amp hours, > or in > > my case approximately 24.2 amps which is what I get with the 220vac > input. > > I would expect the trojan battery algorythm to be similar. My DVM > > typically > > reads between 157v and 159v just prior to the Lester Charger shutting > > itself > > off. > > > > I cant answer your question on how to wire your new Elcon to accept > 220vac > > input, but you may want to consider upgrading to the 220vac sooner than > > later..... especially if you end up purchasing new batteries. > > > > Goodluck, > > Scott > > > > > > > > > > > > -- > > View this message in context: > > > http://electric-vehicle-discussion-list.413529.n4.nabble.com/using-dual-voltage-charger-tp4664138p4664169.html > < > http://electric-vehicle-discussion-list.413529.n4.nabble.com/using-dual-voltage-charger-tp4664138p4664169.html > > > > Sent from the Electric Vehicle Discussion List mailing list archive at > > Nabble.com. > > _______________________________________________ > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub< > http://www.evdl.org/help/index.html#usub> > > http://lists.evdl.org/listinfo.cgi/ev-evdl.org< > http://lists.evdl.org/listinfo.cgi/ev-evdl.org> > > For EV drag racing discussion, please use NEDRA ( > > http://groups.yahoo.com/group/NEDRA< > http://groups.yahoo.com/group/NEDRA>) > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130712/cef6b49c/attachment.htm > < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130712/cef6b49c/attachment.htm > >> > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub< > http://www.evdl.org/help/index.html#usub> > http://lists.evdl.org/listinfo.cgi/ev-evdl.org< > http://lists.evdl.org/listinfo.cgi/ev-evdl.org> > For EV drag racing discussion, please use NEDRA ( > http://groups.yahoo.com/group/NEDRA<http://groups.yahoo.com/group/NEDRA>) > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130712/33ac7493/attachment.htm > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > -------------- next part -------------- An HTML attachment was scrubbed... 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