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分析了小浪底电厂400 V开关备自投失败的原因,分别阐明了DY-36电磁型低电压继电器与JY-12B集成电路型低电压继电器的工作原理,并指出其优缺点。
The reasons for failure of self-switching of 400 V switchgear in Xiaolangdi Power Plant were analyzed. The working principle of DY-36 low-voltage relay and JY-12B low-voltage relay were explained respectively, and their advantages and disadvantages were pointed out.