Mean Well RSD200C-48 will work just fine. Put it between your 48v UPS
load side and -48 gear. The output of the RSD is floating and you should
have no problem tying the + side to ground.
On 8/18/2016 8:19 PM, Gilbert T. Gutierrez, Jr. wrote:
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