Re: [AFMUG] building our own 48volt DC sites grid tied.
Kevin Sounds similar to what we are looking to do. Any additional equipment in place to alert you if the site goes to battery or you hit a certain level of % of Battery? It would be nice to get an alert if the battery bank hit 50% just not sure what could be used for that application. Brandon From: Kevin Neal [mailto:ke...@safelinkinternet.com] Sent: Tuesday, June 19, 2018 12:19 AM To: Brandon Yuchasz Cc: af@af.afmug.com Subject: Re: [AFMUG] building our own 48volt DC sites grid tied. We have been using the IOTA DLS-54-13 (https://www.iotaengineering.com/dls5413.htm) for several years and they've been great workhorses. They've been able to handle most of our needs, we pair it with 4 12v batteries that all fit in the bottom portion of our standard 30" x 36" x 16" enclosures. On Sat, Jun 16, 2018 at 9:27 AM, Brandon Yuchasz wrote: After finally diving into our first 48 volt solar site last year we are now looking to convert some of our more critical sites to 48 volt battery banks that are still grid tied for charging the systems. The plan being to extend the run time on the sites when we lose power. Would anyone that is doing this type of system be willing to share some sources for the chargers that have stood the test of time in your network? I am seeing these sites as 4 12 volt deep cycles ( or if room allows 8 – 6 volt ) this battery bank will feed new Packetflux Rack injectors, and the battery banks will be kept topped off by the charge controller. Thanks everyone, Brandon -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- Kevin Neal IT Director Safelink Internet -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
Re: [AFMUG] building our own 48volt DC sites grid tied.
We have at least 100 MTS48/30FL-1U's out in the field now for ~1 year, been very happy with them so far. Brian On Tue, Jun 19, 2018 at 2:50 AM, TJ Trout wrote: > Although I have not deployed yet, I've heard some really good things about > MajorPower, I think they are eltek or similiar clones. > > Price is great and includes web gui and dc distribution with fuses (or > breakers if you prefer) > > https://www.majorpower.com/products/mts4830fl-1u > > On Mon, Jun 18, 2018 at 10:18 PM, Kevin Neal > wrote: > >> We have been using the IOTA DLS-54-13 (https://www.iotaengineering.c >> om/dls5413.htm) for several years and they've been great workhorses. >> They've been able to handle most of our needs, we pair it with 4 12v >> batteries that all fit in the bottom portion of our standard 30" x 36" x >> 16" enclosures. >> >> On Sat, Jun 16, 2018 at 9:27 AM, Brandon Yuchasz >> wrote: >> >>> >>> >>> >>> >>> After finally diving into our first 48 volt solar site last year we are >>> now looking to convert some of our more critical sites to 48 volt battery >>> banks that are still grid tied for charging the systems. The plan being to >>> extend the run time on the sites when we lose power. Would anyone that is >>> doing this type of system be willing to share some sources for the chargers >>> that have stood the test of time in your network? I am seeing these sites >>> as 4 12 volt deep cycles ( or if room allows 8 – 6 volt ) this battery bank >>> will feed new Packetflux Rack injectors, and the battery banks will be kept >>> topped off by the charge controller. >>> >>> >>> >>> Thanks everyone, >>> >>> >>> >>> Brandon >>> >>> >>> >>> -- >>> AF mailing list >>> AF@af.afmug.com >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> >>> >> >> >> -- >> >> *Kevin Neal*IT Director >> Safelink Internet >> >> -- >> 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
Re: [AFMUG] building our own 48volt DC sites grid tied.
Although I have not deployed yet, I've heard some really good things about MajorPower, I think they are eltek or similiar clones. Price is great and includes web gui and dc distribution with fuses (or breakers if you prefer) https://www.majorpower.com/products/mts4830fl-1u On Mon, Jun 18, 2018 at 10:18 PM, Kevin Neal wrote: > We have been using the IOTA DLS-54-13 (https://www.iotaengineering. > com/dls5413.htm) for several years and they've been great workhorses. > They've been able to handle most of our needs, we pair it with 4 12v > batteries that all fit in the bottom portion of our standard 30" x 36" x > 16" enclosures. > > On Sat, Jun 16, 2018 at 9:27 AM, Brandon Yuchasz > wrote: > >> >> >> >> >> After finally diving into our first 48 volt solar site last year we are >> now looking to convert some of our more critical sites to 48 volt battery >> banks that are still grid tied for charging the systems. The plan being to >> extend the run time on the sites when we lose power. Would anyone that is >> doing this type of system be willing to share some sources for the chargers >> that have stood the test of time in your network? I am seeing these sites >> as 4 12 volt deep cycles ( or if room allows 8 – 6 volt ) this battery bank >> will feed new Packetflux Rack injectors, and the battery banks will be kept >> topped off by the charge controller. >> >> >> >> Thanks everyone, >> >> >> >> Brandon >> >> >> >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >> > > > -- > > *Kevin Neal*IT Director > Safelink Internet > > -- > 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
Re: [AFMUG] building our own 48volt DC sites grid tied.
We use their DC/AC sine wave series as well as their intellicharge series for AC sites with battery backup, and the modular power series you posted above for pure dc, it works well. Great little product, a tad on the expensive side but you seem to get what you pay for. On Mon, Jun 18, 2018 at 7:55 AM, Adam Moffett wrote: > I got one of these puppies to try out after I bumped into them at WISP > America: > > http://www.ict-power.com/products/modular-power-series/ > > 700W 1+1, 700W 1+0, or 1400W 2+0, with battery management, network > monitoring, and 4 load breakers in 1U. You can also swap the load > distribution and battery module for additional 700W PSU's, but I'll never > have that much stuff at one site. > The network module does HTTP, SNMP, email alerts, syslog, and local > logging, it also has an auto-ping reboot if you're into that. > > Cons so far: > >- The DC bus connector bolts (1/4-20) are excessively long and >uncomfortably (to me) close to other metal parts. Will replace with >shorter ones before deployment. >- DC bus and battery terminal uses Nylock nuts, so no hand tightening. >- The battery terminal on battery module seemed to wobble quite a bit >while I was tightening. I worried I would break it. >- Was temporarily confused by having only one battery connection on >the device. Wiring diagram in the manual clarified that +battery post goes >to + DC Bus terminal, -battery post goes to -Batt terminal. >- A bit more expensive than our DIN rail setups. > > > Pros: > >- Everything in 1U, if you're going rack mount then this is way more >space efficient than putting a DIN rail in the rack. >- Simple, Intuitive web management >- Has every feature I wanted >- Cheaper than a comparable Valere Flatpack. > > > My "cons" list is very bitchy and nitpicky, but those are really my only > complaints so far. I'd be curious if anyone has used this and had anything > to add. > > -Adam > > > > > On 6/16/2018 12:49 PM, Brandon Yuchasz wrote: > > Thanks Chuck. > > We expect depending on which site to have between a 3 amp and 5 amp load. > Have not settled on the Ah of batteries yet just getting started on this. > > > > > > *From:* ch...@wbmfg.com [mailto:ch...@wbmfg.com ] > *Sent:* Saturday, June 16, 2018 10:36 AM > *To:* Brandon Yuchasz; af@af.afmug.com > *Subject:* Re: [AFMUG] building our own 48volt DC sites grid tied. > > > > Any telecom charger/rectifier will last for 20 years easy. > > What kind of load amps do you need to run? How big are the batts? > > > > Your rectifier needs to be able to pull the full load current plus the > heavy battery recharge current when the power comes back on. Having one > that limits current is good. Say you have a 5 amp load current and a 100 > Ah battery, you are going to have a minimum of 10 amps of battery charge > current after an outage. Probably more like 20. So a 25 amp rectifier to > run a 5 amp load plus batts would not be out of question. > > > > I like eltek/valere modular units. > > > > *From:* Brandon Yuchasz > > *Sent:* Saturday, June 16, 2018 9:27 AM > > *To:* af@af.afmug.com > > *Subject:* [AFMUG] building our own 48volt DC sites grid tied. > > > > > > > > After finally diving into our first 48 volt solar site last year we are > now looking to convert some of our more critical sites to 48 volt battery > banks that are still grid tied for charging the systems. The plan being to > extend the run time on the sites when we lose power. Would anyone that is > doing this type of system be willing to share some sources for the chargers > that have stood the test of time in your network? I am seeing these sites > as 4 12 volt deep cycles ( or if room allows 8 – 6 volt ) this battery bank > will feed new Packetflux Rack injectors, and the battery banks will be kept > topped off by the charge controller. > > > > Thanks everyone, > > > > Brandon > > > -- > > -- > 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
Re: [AFMUG] building our own 48volt DC sites grid tied.
There is an excellent looking white paper on this on the IEEE website. You used to be able to get all that stuff for free, but now it is $13 for members. I went to buy it an I guess I have forgotten my password. And the password change process does not seem to be working for me. Maybe they don’t restore passwords on the weekend. In any event, if I can get my hands on it, I will allow some scholarly fair use to happen here From: Brandon Yuchasz Sent: Saturday, June 16, 2018 10:49 AM To: af@af.afmug.com Subject: Re: [AFMUG] building our own 48volt DC sites grid tied. Thanks Chuck. We expect depending on which site to have between a 3 amp and 5 amp load. Have not settled on the Ah of batteries yet just getting started on this. From: ch...@wbmfg.com [mailto:ch...@wbmfg.com] Sent: Saturday, June 16, 2018 10:36 AM To: Brandon Yuchasz; af@af.afmug.com Subject: Re: [AFMUG] building our own 48volt DC sites grid tied. Any telecom charger/rectifier will last for 20 years easy. What kind of load amps do you need to run? How big are the batts? Your rectifier needs to be able to pull the full load current plus the heavy battery recharge current when the power comes back on. Having one that limits current is good. Say you have a 5 amp load current and a 100 Ah battery, you are going to have a minimum of 10 amps of battery charge current after an outage. Probably more like 20. So a 25 amp rectifier to run a 5 amp load plus batts would not be out of question. I like eltek/valere modular units. From: Brandon Yuchasz Sent: Saturday, June 16, 2018 9:27 AM To: af@af.afmug.com Subject: [AFMUG] building our own 48volt DC sites grid tied. After finally diving into our first 48 volt solar site last year we are now looking to convert some of our more critical sites to 48 volt battery banks that are still grid tied for charging the systems. The plan being to extend the run time on the sites when we lose power. Would anyone that is doing this type of system be willing to share some sources for the chargers that have stood the test of time in your network? I am seeing these sites as 4 12 volt deep cycles ( or if room allows 8 – 6 volt ) this battery bank will feed new Packetflux Rack injectors, and the battery banks will be kept topped off by the charge controller. Thanks everyone, Brandon -- 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
Re: [AFMUG] building our own 48volt DC sites grid tied.
Thanks Chuck. We expect depending on which site to have between a 3 amp and 5 amp load. Have not settled on the Ah of batteries yet just getting started on this. From: ch...@wbmfg.com [mailto:ch...@wbmfg.com] Sent: Saturday, June 16, 2018 10:36 AM To: Brandon Yuchasz; af@af.afmug.com Subject: Re: [AFMUG] building our own 48volt DC sites grid tied. Any telecom charger/rectifier will last for 20 years easy. What kind of load amps do you need to run? How big are the batts? Your rectifier needs to be able to pull the full load current plus the heavy battery recharge current when the power comes back on. Having one that limits current is good. Say you have a 5 amp load current and a 100 Ah battery, you are going to have a minimum of 10 amps of battery charge current after an outage. Probably more like 20. So a 25 amp rectifier to run a 5 amp load plus batts would not be out of question. I like eltek/valere modular units. From: Brandon Yuchasz Sent: Saturday, June 16, 2018 9:27 AM To: af@af.afmug.com Subject: [AFMUG] building our own 48volt DC sites grid tied. After finally diving into our first 48 volt solar site last year we are now looking to convert some of our more critical sites to 48 volt battery banks that are still grid tied for charging the systems. The plan being to extend the run time on the sites when we lose power. Would anyone that is doing this type of system be willing to share some sources for the chargers that have stood the test of time in your network? I am seeing these sites as 4 12 volt deep cycles ( or if room allows 8 – 6 volt ) this battery bank will feed new Packetflux Rack injectors, and the battery banks will be kept topped off by the charge controller. Thanks everyone, Brandon _ -- 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
Re: [AFMUG] building our own 48volt DC sites grid tied.
Any telecom charger/rectifier will last for 20 years easy. What kind of load amps do you need to run? How big are the batts? Your rectifier needs to be able to pull the full load current plus the heavy battery recharge current when the power comes back on. Having one that limits current is good. Say you have a 5 amp load current and a 100 Ah battery, you are going to have a minimum of 10 amps of battery charge current after an outage. Probably more like 20. So a 25 amp rectifier to run a 5 amp load plus batts would not be out of question. I like eltek/valere modular units. From: Brandon Yuchasz Sent: Saturday, June 16, 2018 9:27 AM To: af@af.afmug.com Subject: [AFMUG] building our own 48volt DC sites grid tied. After finally diving into our first 48 volt solar site last year we are now looking to convert some of our more critical sites to 48 volt battery banks that are still grid tied for charging the systems. The plan being to extend the run time on the sites when we lose power. Would anyone that is doing this type of system be willing to share some sources for the chargers that have stood the test of time in your network? I am seeing these sites as 4 12 volt deep cycles ( or if room allows 8 – 6 volt ) this battery bank will feed new Packetflux Rack injectors, and the battery banks will be kept topped off by the charge controller. Thanks everyone, Brandon -- 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
