【摘要】 三相电动机极限状态参数主要包括超温、断相和过电流等项,对电动机实行软保护,首先必须解决这些参数的测量问题。签于金属热继电器检测元件及其性能方面的缺陷,介绍了一种新颖的综合保护器,包括超温、断相和过电流等保护及有关测量线路的设计方法,试验结果表明各项性能均得到很大改善。更多还原

【Abstract】 The three-phase motor′s limit state parameters included super-temperature and phase wire breaker and over-current etc.For protecting the motor,the first problem was to measure them.Because of shortages of the metal thermal relay in the functions,a kind of the motor synthesize protection measuring circuit was introduced.Its functions were better.更多还原