Thanks Chuck. We expect depending on which site to have between a 3 amp and 5 amp load. Have not settled on the Ah of batteries yet just getting started on this.
From: ch...@wbmfg.com [mailto:ch...@wbmfg.com] Sent: Saturday, June 16, 2018 10:36 AM To: Brandon Yuchasz; af@af.afmug.com Subject: Re: [AFMUG] building our own 48volt DC sites grid tied. Any telecom charger/rectifier will last for 20 years easy. What kind of load amps do you need to run? How big are the batts? Your rectifier needs to be able to pull the full load current plus the heavy battery recharge current when the power comes back on. Having one that limits current is good. Say you have a 5 amp load current and a 100 Ah battery, you are going to have a minimum of 10 amps of battery charge current after an outage. Probably more like 20. So a 25 amp rectifier to run a 5 amp load plus batts would not be out of question. I like eltek/valere modular units. From: Brandon Yuchasz Sent: Saturday, June 16, 2018 9:27 AM To: af@af.afmug.com Subject: [AFMUG] building our own 48volt DC sites grid tied. After finally diving into our first 48 volt solar site last year we are now looking to convert some of our more critical sites to 48 volt battery banks that are still grid tied for charging the systems. The plan being to extend the run time on the sites when we lose power. Would anyone that is doing this type of system be willing to share some sources for the chargers that have stood the test of time in your network? I am seeing these sites as 4 12 volt deep cycles ( or if room allows 8 – 6 volt ) this battery bank will feed new Packetflux Rack injectors, and the battery banks will be kept topped off by the charge controller. Thanks everyone, Brandon _____ -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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