I'm building what is essentially a rack of power supplies to be used as a testing unit for an ion propulsion system. One of the requirements is some pretty high voltages, namely around a 1250V difference between some of our optics. However even at the high end we need a few different rails for a number of functions. In order to achieve this we are essentially connecting a couple of power supplies in series. However this leads to an issue where some of the smaller (output voltage) supplies that are essentially tacked on to the large ~1kV supply don't have a sufficient output to chassis ground isolation rating(600V). In order to get around this we are powering these supplies through an isolation transformer and encasing them in an insulating box to isolate them from the rails of the rack.
However while doing this we still need to be able to control/interface with the power supplies via LAN/Ethernet. I was able to find some information about ethernet galvanic isolation but was having trouble determining whether the isolation rating was for AC or DC and whether or not this application would be fine as is or if we would need to add some additional isolation transformers on the line to ensure the safety of the connection.
