Additives for the self-extinguishment of corona in gases

It has long been recognized that corona discharge, in addition to representing a power loss, causes damage to insulation, which may result in eventual failure. Even in equipment designed to be corona-free, flaws or defects, or abnormal conditions which result in high voltages, may produce corona. Moreover, if there would be assurance that corona would be suppressed, various combinations of the alternatives of smaller size, higher operating voltage or longer life of equipment would be possible.