Damping Factor Function in AC Electrical Arc Models. Part 1: Heat Process Relaxation Phenomena, their Approximations and Measurement

The article is dedicated to technical evaluation of knowledge about arc damping factor function. Special attention is paid to its specific value - the time constant, which decides about the functioning quality of electrotechnological devices and electrical apparatus. Factors affecting heat process relaxation phenomena in electrical arc have been described. Approximation possibilities of energetic process damping factor functions in electrical arc have been examined. Experimental methods of determining dynamic parameters of AC arc have been described.