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通过研究和应用一种开关电流抑制器,解决了高速动车组伴热变压器在启动瞬间因励磁电流过大造成伴热变压器前级断路器跳闸保护导致车下伴热设备不能正常工作,引起水箱、排水管路等车下设备低温环境下的故障问题。
Through the research and application of a switch current suppressor, the heat tracing equipment of the high-speed motor train unit can not work normally due to the tripping protection of the preceding-stage circuit breaker of the heat-tracing transformer due to the excessive excitation current at the starting moment, Drainage and other equipment under the car low temperature environment problems.