I'm not charging batteries. I just need to be able to parallel a psu with the load and batteries occasionally. On Apr 26, 2015 7:06 AM, "Chuck McCown" <ch...@wbmfg.com> wrote:
> The whole rectifier shelf, the module or the BC-2000? > > *From:* Lewis Bergman <lewis.berg...@gmail.com> > *Sent:* Sunday, April 26, 2015 7:55 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Power supply back feed loss? > > > I have an extra one of those if you want it. > On Apr 26, 2015 8:43 AM, "Chuck McCown" <ch...@wbmfg.com> wrote: > >> A load of that size really needs a regular telecom rectifier/charger. >> They are designed for exactly this application. If your load is 100 amps, >> the power supply needs to be probably 120 or 150 with current limiting so >> it can pull the load and charge the batts after an extended outage. Lately >> I have been using these: >> >> http://www.eltek.com/us/detail_products.epl?id=1233974&cat=24671&k1=&k2=&k3=&k4=&close=1 >> >> If you get the BC-2000 controller, you get a nice battery load test and >> telemetry option too. You can run the system just on batts for any >> specified amount of time and graph the discharge. Shows the life and >> health of the battery really quickly. >> >> >> On Apr 23, 2015 11:34 PM, "TJ Trout" <t...@voltbb.com> wrote: >> >>> I have a dc load that I need to power using a switching ac to dc power >>> supply but I also occasionally need to power the load from batteries, I was >>> planning to put the load, power supply and battery clamps in parallel, is >>> that a acceptable solution ? Can I power the load from battery and back >>> feed DC into the supply without damaging it? Would there be a significant >>> drain back into the supply? >>> >>> If this isn't ok, what's better solution? Diode ? SPDT switch ? >>> >>> The load is 50V 100A so that makes diodes and switches a challenge to >>> find. .. >>> >>
