Magnum inverters have an AC input cutoff where if it dips below, they invert and cancel charge.
Very, very good rugged units. American made with good warranties. On Dec 27, 2016 11:55 AM, "Ken Hohhof" <[email protected]> wrote: > I’ve never used the Tripp Lite APC series, but I believe their main > purpose is emergency vehicles, RVs, boats, etc. where they switch > automatically between battery and shore power. Using similar units in the > past, I have found one thing to look for is how low the shore (commercial) > power has to be for the transfer switch to switch to batteries. They may > just use a relay, assuming commercial power is either there or it isn’t. > But we get a lot of partial voltage situations like 60 or 80 volts, and a > lot of our electronics won’t run on that. It’s very frustrating to drive > out to a site that is down, and find a fully charged battery string that > isn’t being used because the ATS thinks 80 volts is plenty. > > > > > > *From:* Af [mailto:[email protected]] *On Behalf Of *Josh Corson > *Sent:* Tuesday, December 27, 2016 11:48 AM > *To:* [email protected] > *Subject:* Re: [AFMUG] Battery backup at large sites > > > > How about a APC750 or APC1250 tripplite inverter/charger? > > Also I wanted to have a way to monitor how long of runtime the batteries > have remaining...like the APC smart UPS units. > > > On Dec 27, 2016, at 2:52 AM, Forrest Christian (List Account) < > [email protected]> wrote: > > The tool you're looking for in relation to the monitoring is a packetflux > sitemonitor base unit. > > > > Others can point you toward the chargers. > > > > On Dec 26, 2016 11:36 PM, "Josh Corson" <[email protected]> wrote: > > What is everyone using as a battery backup at sites that cannot use a > standard off the shelve UPS? > The site in mention is probably using 500 watts max. The battery side > of things is a no brainer - calculate run time, determine your bank, > buy batteries. > However, what are you using for: > > 1. Inverter / charger > 2. Network monitoring capability when AC goes out with SNMP. > > The hardest challenge I've found is sourcing something for network > monitoring that isn't an all in one charger/inverter like the ICT > models at 1k. > > Always wondered if you could rig a APC network card to work in a battery > bank... > > If anyone could share the layout of their system I'd appreciate it! > > Josh > > Sent from my iPhone > >
