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... 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