And unless you have 12 volt only loads, the cost is about the same for a 24 volt site.
From: Justin Wilson Sent: Monday, March 20, 2017 11:33 AM To: [email protected] Subject: Re: [AFMUG] DC Power Site Our site was a backhaul, an rb750, and an Omni. We had tons of issues with it until we upgraded to 24volt. Under load it would draw more amperage and things would suffer. Had another similar site and it’s issues went away after an upgrade to 24 volt. Justin Wilson [email protected] --- http://www.mtin.net Owner/CEO xISP Solutions- Consulting – Data Centers - Bandwidth http://www.midwest-ix.com COO/Chairman Internet Exchange - Peering - Distributed Fabric On Mar 20, 2017, at 1:25 PM, Darin Steffl <[email protected]> wrote: Justin, Our planned load for this site is only 70 watts for two backhauls, an omni, and netonix. This should be well within range of the 155 watt power supply, no? Our ethernet runs are also only 30 feet or less. I also don't see that the voltage is adjustable on the AD-155 though? Spec sheet doesn't mention it or have a picture of that. On Mon, Mar 20, 2017 at 12:21 PM, Justin Wilson <[email protected]> wrote: Don’t skimp by going with the lower voltage. You will run into an amperage issues pretty quickly. Seen a 12-13 volt site with 1 backhaul and an omni run into amperage issues within a week. Voltage is fine, just way too much amperage. It’s not worth the headache. Justin Wilson [email protected] --- http://www.mtin.net Owner/CEO xISP Solutions- Consulting – Data Centers - Bandwidth http://www.midwest-ix.com COO/Chairman Internet Exchange - Peering - Distributed Fabric On Mar 20, 2017, at 1:11 PM, Darin Steffl <[email protected]> wrote: Hello all, We're looking to build our first DC power site for small MicroPops and I see two options after reviewing the WISPA archives. The first option would be the the SDR-240-24 and DR-UPS40 with Two 12v batteries powering a Netonix DC switch. The second option we were looking at is just doing the AD-155A with one 12v battery but I see the charging current is only 0.5 amps and voltage is only 13.3V which is not an optimal float voltage. My question is, to keep cost down, would we be OK going the AD-155A route with the slightly lower float voltage with a 35ah battery? We're ok with the battery taking longer to charge but I'm just most worried if the 13.3V will wreck the battery or not. Thanks all -- Darin Steffl Minnesota WiFi www.mnwifi.com 507-634-WiFi Like us on Facebook -- Darin Steffl Minnesota WiFi www.mnwifi.com 507-634-WiFi Like us on Facebook
