An accidental energization occurs whenever an offline generator is unintentionally connected to the power system. Generator damage reported from these incidents has ranged from none to the complete distraction. The simplest form of accidental energization is an erroneous closure of the generator breaker. The most common scenarios involve closing a generator disconnect switch at a ring bus or breaker-and-a-half switchyards or a flashover across contacts of the open synchronizing breaker.