I have designed a power supply with a 3kV output. I need connect it to external heat-sinked load. I have purchased some 15kV twisted pair cable to do this.
I am unsure the best way to bring this voltage from the board, to the load.
I have been told 600V terminal blocks will do the job.
Won't I be exceeding the voltage rating?
The voltage is floating from ground, also, so I will need two wires from the terminal block - one for VOLT+ and one for VOLT-. If using a terminal block, this means the full voltage will be imposed upon it (to my understanding.)
Is it better to just have a via, sized to the AWG of the 15kV wire, which is soldered directly into the board? Possibly then, coated with some high voltage insulation material such as silicon or what not to increase breakdown capability? Possibly I could use the PCB footprint of the terminal block, but not actually place the component at time of manufacture - instead just directly soldering the 15kV wires into the hole with HV potting applied over it.