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煤矿井下电机烧毁清况十分严重,据调查,烧毁率达到0.7～0.8台/万吨,个别局矿达到了1台/万吨,影响了煤矿的安全生产.我院根据生产的急需,在上级的关怀、指导下和兄弟单位配合下,研制成功了JDB—120、225型电机综合保护器.煤炭部技术发展司和生产司于1983年5月31日至6月2日在开滦矿务局共同组织召开了由我院研究设计、三溪矿山电器厂试制的JDB—120、225型电机综合保护器鉴定会,参加会议的有科研、院校、厂矿等27个单位92名代表,我院科研处及机电二系负责人及课题组教师6人参加了会议.
According to the survey, the burnout rate reached 0.7-0.8 units / million tons, and the individual bureau mines reached 1 unit / 10000 tons, affecting the safe production of coal mines. According to the urgent need of production in our hospital, Under the guidance of the brothers and units with the cooperation of the successful development of the JDB-120,225 motor integrated protection of the Ministry of Coal Technology Development Division and Production Division in May 31, 1983 to June 2 in Kailuan Mining Bureau jointly organized and held by the Institute of Design, trial production of Sanxi Mines Electric Factory JDB-120,225-type motor protector identification will attend the meeting of scientific research, institutions, factories and mines, 27 units 92 representatives, our hospital Research Department and the second person in charge of electromechanical and task force teachers attended the meeting.