Automatic torch protection

When consumables have a catastrophic failure (or blow out) at high current settings, torch damage can occur. This torch damage can occur from the plasma arc or from molten copper or brass that gets into the coolant paths of the torch.

If catastrophic consumable failure occurs, the chopper or choppers in the plasma power supply can find the problem at its start through the Electromagnetic Interference (EMI) or noise signature of the current that is being supplied to the torch. The chopper adapts quickly to stop the cutting system and to prevent damage to the torch. The electrode will have a catastrophic failure (a blow out), and there can be possible damage to other consumables, but catastrophic damage to the torch will not occur.