I have a circuit at a high potential compared to ground, up to 30kV, in which I have to measure a current of like 2A. Because the whole circuit is at 30kV I could just measure it with a normal multimeter but my problem is that the whole thing should be in an isolated box for obvious safety reasons. So the "Display" needs to be connected to ground.
I know there are some wireless options like a current clamp or optocoupler but I don't know if they are isolated enough for 30kV compared to ground. The difficulties I see with a shunt and a voltage divider is that the voltage at the resistor would be much much smaller than the 30kV so the divider would need to be super precise. I hope someone has experience with stuff like this.
Thanks in advance