David, I already have a charger in my EV, but the input side of a UPS would make for a backup charger, in fact it might charge faster than the charger I have in my EV today. That is not always an advantage, as the UPS that I am looking at has a spec that it needs about 24A at 120V (L5-30 plug) so this will not let me charge at a regular wall outlet (NEMA 5-15) which my current charger *can* do. My current charger can also be switched over to 240V input, which I am not sure that the 9125 is capable of - I need to see what it can do when I get it. Maybe I can also turn down the charging current so I *can* use it as a backup charger (or charge from two 5-15 outlets double fast).
The 1-2kVA versions of 9125 typically use 48V packs, so even though it is one product line, they have quite different characteristics between the different model sizes. Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: [email protected] Private: http://www.cvandewater.com Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626 Tel: +91 (040)23117400 x203 -----Original Message----- From: [email protected] on behalf of David Sent: Mon 2/11/2013 12:28 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] EVs as power source Cor, Thats an interesting idea, what is the real difference between these and an inverter? Just the battery backup function? I just did a quick search and those 9125's are indeed cheap. I just saw a 48V 36A unit for under 70 dollars. So are they universal input IE: DC or AC or are you just planning to run off the extended battery connector alone? They obviously have some type of charging function so maybe would be useful to charge a pack as well. Dach. ________________________________ From: Cor van de Water <[email protected]> To: Electric Vehicle Discussion List <[email protected]>; Electric Vehicle Discussion List <[email protected]> Sent: Sunday, February 10, 2013 7:20 PM Subject: Re: [EVDL] EVs as power source Willie, One brand I know is the older 3kVA Powerware 9125 UPS that can be picked up for reasonable price "used - needs batteries" and run from your 120V pack. The Powerware uses 10x 12V batteries (120V string) so they should be able to work up to 150V DC or so. I have a 120V pack in my truck and I am working to get one of those inverters, so that I can access up to 3kW of 120V AC in case of emergency (or field testing). Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: [email protected] Private: http://www.cvandewater.com Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626 Tel: +91 (040)23117400 x203 -----Original Message----- From: [email protected] on behalf of Willie McKemie Sent: Sun 2/10/2013 8:49 PM To: Electric Vehicle Discussion List Subject: [EVDL] EVs as power source I tried my 120vac chainsaw on a 45 cell EV pack yesterday. Too high voltage, I guess. I guess I need something like a 100 vdc pack to make a 120vac motor happy? Can someone suggest a way to drop the pack voltage some? I guess (I'm doing a lot of guessing here) I should consider an inverter. Has anyone seen a 2-3kw inverter that accepts 140-160vdc input? Alternately, I guess I could use a 12vdc inverter, a big 12v battery and depend on my car's DC-DC to eventually recharge it. If my Belktronix DC-DC will do 300w, I guess I would need to use only a 30% duty cycle; use ~1kw only 1 hour out of 3. Comments? Suggestions? -- Willie, ONWARD! Through the fog! http://counter.li.org Linux registered user #228836 since 1995 Debian3.1/GNU/Linux system uptime 207 days 23 hours 36 minutes _______________________________________________ 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) _______________________________________________ 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... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130210/d812e40c/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) _______________________________________________ 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)
