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冶金工厂和矿山广泛地应用着异步电动机。这些电动机大部是在粉尘、潮湿和无人监护的条件下运行;兼之不完善的保护系统而造成的电动机烧毁事故还是严重存在的。电动机故障中断相烧毁占有较大的比重。几年来,华铜铜矿、龙烟铁矿和北京矿冶研究院根据电动机断相的特点研制出多种适于冶金矿山的无触点断相保护器。应用效果良好,深受各部门的欢迎。现把应用于龙烟铁矿六坑六
Induction motors are widely used in metallurgical plants and mines. Most of these motors operate under conditions of dust, humidity and unattended operation. The motor burnout caused by the imperfect protection system is still serious. Motor failure interrupt phase occupy a larger proportion. In recent years, Huacai Copper Mine, Longyan Iron Mine and Beijing Institute of Mining and Metallurgy developed a variety of non-contact phase failure protectors for metallurgical mines according to the characteristics of motor phase failure. Application effect is good, welcomed by all departments. Now used in Longyan iron ore six pit six