We do it Gino A. Villarini [EMAIL PROTECTED] Aeronet Wireless Broadband Corp. tel 787.273.4143 fax 787.273.4145
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mark Nash Sent: Monday, July 10, 2006 11:14 AM To: WISPA General List Subject: Re: [WISPA] DC Inverter help I'm curious if anyone has a) connected external batteries to an APC UPS... AND ... used the APC SNMP card to monitor the status of battery consumption. I currently use APC SU700NET UPSs in external 6"-deep boxes to condition power and provide battery backup. The SNMP card (AP9617) will e-mail our support if the site goes on battery power, giving us about 2.5 hours to get up the hill with a generator. When the batteries go below a threshold of charge left, it e-mails to let us know it's in a critically low charge state. So, if we put on extra batteries, does the UPS know this and does it know what kind of runtime it has left? Mark Nash Network Engineer UnwiredOnline.Net 350 Holly Street Junction City, OR 97448 http://www.uwol.net 541-998-5555 541-998-5599 fax ----- Original Message ----- From: "Mac Dearman" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]>; "'WISPA General List'" <wireless@wispa.org> Sent: Sunday, July 09, 2006 8:15 PM Subject: RE: [WISPA] DC Inverter help > Brian, > > I guess I am an idiot because I hadn't thought of that! I don't have any > (hardly) of my APC UPS's overloaded and it would probably be pretty easy > to > do that. I bought some rack mount Compaq 3000Watt UPS's for the NOC and > tied > 4 Gel Cell 100lb batteries to each of those Compaq's. That has been > working > like a charm, but it scares the fire out of me to mess around them. While > connecting them I managed to arc the wires and that produced a ball of > fire > that was bigger than I was! I later found out those 4 12VDC batteries in a > series (48VDC) produces more than enough DC voltage to knock your guts out > while it blows the bottom of your feet off. > > Sorry for that story - but it may keep some of us from "leaving here > early" > > Mac > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Brian Webster > Sent: Sunday, July 09, 2006 10:00 PM > To: WISPA General List > Subject: RE: [WISPA] DC Inverter help > > Mac, > Can you tap in to the battery lines on the UPS and add extra > external > batteries to extend the run time? This would give you the advantage of > conditioned power and automatic switch over of the UPS, and you would > still > have any other management features of the UPS still available to you. Just > an idea to consider. > > > > Thank You, > Brian Webster > > -----Original Message----- > From: Mac Dearman [mailto:[EMAIL PROTECTED] > Sent: Sunday, July 09, 2006 10:35 PM > To: 'WISPA General List' > Subject: RE: [WISPA] DC Inverter help > > > > Can anyone give me a lead as to what I am looking for? I believe this > http://tinyurl.com/lje7s is what I need, but I don't think I need 400Watts > as all I will be pulling at several new tower sites are a few RB532's with > their radios. I think I ought to keep the RB532s powered at 48VDC as they > will be in excess of 200' up a tower. My intentions are to put a couple > Marine batteries in an enclosure for back up power and have the DC > inverter > to keep them charged and have a seamless transfer if a power outage comes > along. I have been putting these big honking APC UPSs in all my > enclosures, > but am trying to get something that will last longer in times of outages > > Any help would surely be a appreciated. > > Thanks folks, > Mac > > > -- > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > > > -- > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > -- > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
