Re: 48vDC Output UPS

["Lewis,Mitchell T." <ml-nanog () techcompute net>]

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 

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From: "William Herrin" <bill () herrin us> 
To: "Lewis,Mitchell T." <ml-nanog () techcompute net> 
Cc: "NANOG" <nanog () 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 () techcompute net | ml-nanog () 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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bill () herrin us ] 
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