Yes, the load voltage and battery voltage are always the same on the AD-155... I have never yet run into anything that I'd want to put on a tower that had an issue with the voltage varying a bit, pretty much everything this is happy until you get above 28 volts or so.
My favorite power supply for micropops is the Meanwell DRC-100B... I just wish they made a 48v version. On Mon, Mar 20, 2017 at 2:08 PM, Adam Moffett <[email protected]> wrote: > I'm 99.9% sure that load voltage and battery voltage are one and the same. > If you don't want the load voltage to vary then you have to add a DC/DC > converter. You probably don't need to. > > > ------ Original Message ------ > From: "Darin Steffl" <[email protected]> > To: "[email protected]" <[email protected]>; "[email protected]" <[email protected]> > Sent: 3/20/2017 3:03:33 PM > Subject: Re: [AFMUG] [WISPA Members] DC Power Site > > So it looks like we will go with the 24v system (AD-155B) for now. > > Does the voltage adjustment screw only change the Load voltage or also the > battery charge voltage? > > What happens if the batteries run completely dead? When AC power is > restored, will the power supply still boot up properly and provide DC power > for our load and start charging the dead battery? > > What do you all recommend for fuses and breakers as well for a microsite > like this? Any pics and/or part numbers would be greatly appreciated. I've > found plenty of info on the DIN rail solutions but not seen any pics with > the AD-155 yet. > > Thank you all! > > On Mon, Mar 20, 2017 at 1:51 PM, David Hulsebus <[email protected]> > wrote: > >> I discussed this last week with a power engineer. >> >> We plan to use 4 Trojan T105 batteries in series to create a 24V string. >> >> With 280 Ah batteries they said we would need a 40 amp charging circuit >> if I want to run from DC while batteries are also being charged. I use 8 >> amps of continuous power. >> >> Here are the two devices he spec'd for the project. >> >> DLS-27-40/IQ4 Iota charger >> >> RSD-300B-24 Meanwell 24V DC output 11.3A >> >> The power guy said the biggest mistake made is not sizing the charge >> device large enough. Sure we only need 8 amps, but the batteries may >> consume 30 or more during a bulk charge. >> >> Dave Hulsebus >> >> On 3/20/2017 2:10 PM, Scott Lambert wrote: >> >> We've had a lot of failures with the AD-155B. That could be something >> we're doing wrong. >> >> If you end up with a couple of AFs or some LTE gear onsite, you will want >> more than 150w. I'm leaning more toward having a 24v power supply that >> knows how to maintain batteries and running the load straight off the >> battery bank. >> >> >> >> On March 20, 2017 12:28:39 PM CDT, Josh Baird <[email protected]> >> <[email protected]> wrote: >>> >>> Just use a AD-155B or AD-155C like has been said. Don't bother with 12V. >>> >>> On Mon, 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 >>>>> <http://www.facebook.com/minnesotawifi> Like us on Facebook >>>>> <http://www.facebook.com/minnesotawifi> >>>>> >>>>> >>>>> >>>> >>>> >>>> -- >>>> Darin Steffl >>>> Minnesota WiFi >>>> www.mnwifi.com >>>> 507-634-WiFi >>>> <http://www.facebook.com/minnesotawifi> Like us on Facebook >>>> <http://www.facebook.com/minnesotawifi> >>>> >>>> _______________________________________________ >>>> Members mailing list >>>> [email protected] >>>> http://lists.wispa.org/mailman/listinfo/members >>>> >>>> >>> >> -- >> Sent from my Android device with K-9 Mail. Please excuse my brevity. >> >> _______________________________________________ >> Members mailing >> [email protected]http://lists.wispa.org/mailman/listinfo/members >> >> >> -- >> Portative Technologies >> 1995 Allison Lane, Suite 100 >> Corydon, IN 47112 >> >> >> >> ------------------------------ >> [image: Avast logo] >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> >> >> This email has been checked for viruses by Avast antivirus software. >> www.avast.com >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient> >> >> >> _______________________________________________ >> Members mailing list >> [email protected] >> http://lists.wispa.org/mailman/listinfo/members >> >> > > > -- > Darin Steffl > Minnesota WiFi > www.mnwifi.com > 507-634-WiFi > <http://www.facebook.com/minnesotawifi> Like us on Facebook > <http://www.facebook.com/minnesotawifi> > >
