Auxiliary converter system isolation contactor failure is more common converter

"Auxiliary converter I" of the two converters to Vll and V 12, "auxiliary inverter 11," the two converters to V21 and V22, a total of four sets of the entire vehicle, respectively, for the respective auxiliary power unit . Set any of them fails,  electric transformer  by isolation, conversion contactor load reallocation, can ensure locomotive maintenance operation. Kind, car segment more than three years in my practice, auxiliary converter system isolation, conversion contactor failure is more common, due to  air circuit breaker handling crew, resulting in more  circuit breakers , therefore, affecting the transportation and production.  failure is more common converteris faulty twisted addictedslave wild side ironing full clarity of J junction compensation in order to better and more S J Lin turned flower locomotive in practical problems.