48vDC Output UPS

Bryan Holloway bryan at shout.net
Sat Dec 30 05:23:09 CST 2017


Eltek is worth a look. Really solid stuff. Used them for awhile now.

If you want battery back-up, it'll probably take more than 3 RU, though.


On 12/29/17 9:16 PM, Lewis,Mitchell T. wrote:
> I should have been more specific(Quite obvious by the responses I have been getting). I am looking for a rack mount rectifier type device for a remote site(Not a Datacenter/Colo) which outputs 48vdc & has an 120vac input. I would like it to be remote monitor-able via snmp(battery charge, running on batteries etc). I am looking for a runtime of about an hour at about 500w load. A built in battery would be great but an external battery would work as well-I would like the whole setup to be no more than 3ru.
> 
> The purpose this device will serve to allow remote monitoring of power conditions(Advance Power Outage Notification, Power Glitches etc) as well as power the connected devices for a short while in the event of a power glitch(Brown-Out, Power outages up to 30-45 minutes etc).
> 
> I hope this help clarify.
> 
> 
> Thanks & Regards,
> 
> Mitchell T. Lewis
> 
> [ mailto:MLewis at TechCompute.Net | MLewis at TechCompute.Net ]
> 
> 
> [ http://linkedin.com/in/mlewiscc ] |203-816-0371
> 
> PGP Fingerprint: 79F2A12BAC77827581C734212AFA805732A1394E [ https://pgp.mit.edu/pks/lookup?op=get&search=0x2AFA805732A1394E | Public PGP Key ]
> 	
> 
> 
> From: "William Herrin" <bill at herrin.us>
> To: "Lewis,Mitchell T." <ml-nanog at techcompute.net>
> Cc: "NANOG" <nanog at nanog.org>
> Sent: Friday, December 29, 2017 10:05:15 PM
> Subject: Re: 48vDC Output UPS
> 
> On Fri, Dec 29, 2017 at 7:58 PM, Lewis,Mitchell T. < [ mailto:ml-nanog at techcompute.net | ml-nanog at techcompute.net ] > wrote:
> 
> 
> I have been looking for a Rack Mount UPS that accepts AC power input but has 48vdc output(telco voltage). Anyone have any recommendations?
> 
> 
> 
> Hi Mitchell,
> 
> That's not usually called an UPS. What you need is a Rectifier that feeds a -48 battery system. You connect your equipment the battery and make sure the rectifier system puts out enough wattage to both power the equipment and keep the battery topped off.
> 
> Try searching ebay for "rack rectifier"
> 
> Regards,
> Bill Herrin
> 
> 


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