I am working on a high-side current sensor, where the high-side is around 3kV. I have come to the conclusion, with some help from you kind folks, that it is best that I float the majority of my circuit up at that 3kV level. However, I need to get the signal out to ground level, so that it can be input to a microcontroller. I am having a hard time finding any isolation devices who isolate at such a high working voltage, rather than transient voltage. Does anyone have any suggestions of such a device? I guess I also need an isolated DC/DC converter, that will let me power the 3kV floated circuit from a power supply at the ground level...I also am struggling to find such a thing.
Any help or suggestions would be greatly appreciated.
Thank you so much.