Yup an isolated 48v to 48v power supply.
If you connect 48v and -48v equipment to the same power supply then
something bad will happen.
------ Original Message ------
From: "Gilbert T. Gutierrez, Jr." <mailing-li...@phxinternet.com>
To: af@afmug.com
Sent: 8/18/2016 9:19:36 PM
Subject: [AFMUG] 48v and -48v
I have a site that I am converting to DC from AC. All of the gear
powers at traditional 48v with a negative ground. I have a PTP800
though that I am told is -48v (ground tied to positive). How do I get
-48v for the PTP800?
The site has a NewMar DIN-UPS 48-10. It states that the outputs are
isolated (it has 2) but I do not think they are isolated from each
other, just from ground. To tell you the truth I am lost. I was
thinking maybe a DC to DC converter of some sort.
Thank you,
Gilbert
