Our typical setup medium sized sites is: Traco TSP-360-148 (360W @ 48V) Traco TSP-BCM48A (we usually put a string of 4 12-33ah 12V batteries on these)
For very small sites, where we only need (or can fit) 1 12V battery, but still require 48VDC, we do: Meanwell SDR-240-48 Traco TSP-BCMU (good for ~220W, can output either 24VDC or 48VDC with a single 12VDC battery.. we usually put a single 18-33ah battery on these) Voltage drop obviously depends on length of the run, but you should be able to easily calculate that. We usually adjust our PSU's (at the bottom) to ~54VDC and we typically see ~49-51VDC at the top. Yes, you can tweak the output of both the Meanwell and the Traco to compensate for voltage drop if needed. We use a Shireen hybrid fiber cable which has a 12AWG pair for DC. We use these up to 200ft or so. On Thu, Jun 20, 2019 at 3:47 PM Sterling Jacobson <sterl...@avative.net> wrote: > So what’s the Traco parts list for that? > > > > I don’t do this stuff normally, so excited to get started and try it out. > > > > If I’m pushing 48v up top to a roof, what’s the voltage drop? > > > > I assume these DC units can somehow be tweaked so that output can > accommodate for voltage drop. > > > > What size wire is everyone using typically for this, usually 30-100 ft max > length? > > > > I’m assuming it’s something like 10 AWG? At 48v and 5A and 50’ is maybe > 47.5v at the end? > > So I would push 49 or 50v just to be safe? > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of * Josh Baird > *Sent:* Wednesday, June 19, 2019 8:19 AM > *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> > *Subject:* Re: [AFMUG] UPS and DC to DC conversion > > > > FWIW - we have lots of EdgePoint S16's that are powered by Traco BCM/TSP > combos @ ~54V with no issues. > > > > I agree with others - your battery plant should be 48VDC. > > > > On Wed, Jun 19, 2019 at 10:15 AM Sterling Jacobson <sterl...@avative.net> > wrote: > > Yeah, I’ll probably just use 48v battery array in series and float higher. > > > > That particular device can do 48v, it just may shut down POE if it gets > lower than 48v. > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *ch...@wbmfg.com > *Sent:* Wednesday, June 19, 2019 8:11 AM > *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> > *Subject:* Re: [AFMUG] UPS and DC to DC conversion > > > > Why not run your system at 54 volts? If the radio freaks out above 54, > just set it at 54 and you should be fine. Battery strings don’t exceed the > float voltage of the rectifier. If you are worried about it float at 53.75 > volts. > > > > *From:* Sterling Jacobson > > *Sent:* Tuesday, June 18, 2019 11:19 PM > > *To:* AnimalFarm Microwave Users Group > > *Subject:* Re: [AFMUG] UPS and DC to DC conversion > > > > Having a hard time figuring out the exact part/price for something like > this. > > > > Which Meanwell part would take 48v and make it 50v or 54v 5A? > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *Adam Moffett > *Sent:* Tuesday, June 18, 2019 10:21 PM > *To:* af@af.afmug.com > *Subject:* Re: [AFMUG] UPS and DC to DC conversion > > > > That's weird to me. Any telecom equipment made for 48v I would have > assumed they intended it to be used with a rectifier, and consequently I > would assume it'd be ok up to at least 56v continuous; and maybe more like > 60-70v for a short duration. But yeah, DC-DC converter is the fix. > > On 6/18/2019 11:36 PM, Sean Heskett wrote: > > You need to use a DC-DC converter for sensitive equipment like that. > Meanwell has a good selection. > > > > On Tue, Jun 18, 2019 at 8:12 PM Sterling Jacobson <sterl...@avative.net> > wrote: > > Apparently the UBNT EP-S16 freaks out if it goes above 54v. > > Is there any way to assure it doesn’t float/charge above 54v, or maybe > even just 50v? > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *TJ Trout > *Sent:* Tuesday, June 18, 2019 7:26 PM > *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> > *Subject:* Re: [AFMUG] UPS and DC to DC conversion > > > > contact talley or tessco for a price, don't trust what you see on google, > it's like 50% less > > > > On Tue, Jun 18, 2019 at 6:25 PM TJ Trout <t...@voltbb.com> wrote: > > all 48v systems for battery power will float at 54v, it's also adjustable > via the battery chemistry > > > > On Tue, Jun 18, 2019 at 3:33 PM Sterling Jacobson <sterl...@avative.net> > wrote: > > Ok, cool. > > > > So can the 7bc2 be adjusted slightly to output 50v instead of just 48v? > > > > There will be some loss going 100’ or so, right? > > > > > > *From:* AF <af-boun...@af.afmug.com> *On Behalf Of *TJ Trout > *Sent:* Tuesday, June 18, 2019 4:23 PM > *To:* AnimalFarm Microwave Users Group <af@af.afmug.com> > *Subject:* Re: [AFMUG] UPS and DC to DC conversion > > > > 12-54v is inefficient, if you want 200ah of battery use 4x50ah batteries > for a 48v string > > ICT24048-7BC2 360W 54v AC-DC + LVD + Charger > ICT-TMP - Temp sensor for charge compensation if batt's outside > ICT-WMB - Wall mount bracket > SITE Monitor - Voltage monitoring > > Or > > Alternativly; > > 48v din mount PSU > 48v 'dc ups' to charge batt's and provide LVD > OR > 48v din 'dc ups' with integrated psu + lvd + charger (i.e. DIN-UPS 48-5 > cheaper options available) > > > > On Tue, Jun 18, 2019 at 2:50 PM Sterling Jacobson <sterl...@avative.net> > wrote: > > I’m trying to put a “box” system together for our house POP sites and need > help with the DIN stuff and UPS. > > > > Can you guys give me an idea or example of the following? > > > > I want to take standard AC 15A in from a breaker outside the box. > > And using maybe one or two 12v 105AH AGM batteries, supply 50v 6A up the > side of the house. > > > > I have never ordered DIN parts like this, guess I don’t have to use DIN, > but would be nice. > > > > Having a problem finding a DC to DC converter that takes 12v and > upconverts to 50v 5-6A. > > > > Is this the cost effective method? Something like this: > > > > Monitoring Sitemonitor Base Unit II SMON Base > II 1.00 > $100.00 $100.00 > > UPS Monitor Sitemonitor Int MorningStar MeterBus SMON > MorningStar 1.00 $60.00 $60.00 > > UPS Charge MorningStar Sunsaver > Dual > 1.00 $165.00 $165.00 > > Battery AGM Deep Cycle 105AH NPP > FT12-105AH > 2.00 $225.00 $450.00 > > DIN Parts like DC fuse/breakers and trunk > stuff > 1.00 $100.00 $100.00 > > DC 12v to 50v > 5A > 1.00 $150.00 $150.00 > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > > > > ------------------------------ > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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