Plasma C Wiring

I'm more with snowgoer on this one. Stating it another way. Hypertherm say that the voltage on the divider will never exceed 18v. Maybe it is clamped off at that level in some way. We don't know.

But with a 20:1 divider, 18 * 20 = 360V

I think 300 volts will be exceeded on piercing or on void crossing. I know my plasma cutter will occasionally go to its full scale of 300 volts and beyond.

Either way, its not a concern for us due to the overvoltage capacity of the THCAD. The 18 volt limit is not a concern as it won't fry our circuit.

tommylight wrote:

None of that matters, if the voltage goes above the set point the THC will already be adjusting the height, no matter how high the voltage is.

Only if the THC is enabled. The big peaks are typically when the THC is disabled and are therefore ignored.

Probably the main thing to be aware of is that there needs to be enough headroom for a void crossing event to be detected. It the maximum while cutting by the specs is 140 volts, then 200 volt full scale is probably close to perfect!