低压断路器脱扣器整定电流的选择  

Selection of Setting Current for Release of Low Voltage Circuit Breaker

作　　者：苗琳璐 牟业龙[1] 雒虎生 刘浩然[1] MIAO Lin-lu;MU Ye-long;LUO Hu-sheng;LIU Hao-ran(Northwest Research Institute of Mining and Metallurgy,Baiyin 730900,China)

机构地区：[1]西北矿冶研究院,甘肃白银730900

出　　处：《甘肃冶金》2021年第1期82-85,共4页Gansu Metallurgy

摘　　要：介绍了低压断路器选择的重要性。详细论述了断路器额定电流及脱扣器整定电流的选取,并阐述断路器在400 Hz系统及温度大于40℃时,断路器长延时过电流脱扣器整定值的修正。举例说明了断路器在选矿厂熔铸车间的选型分析。This paper introduces the importance of low voltage circuit breaker selection.The selection of the rated current of the circuit breaker and the setting current of the release are discussed in detail,and the correction of the setting value of the long delay over-current release of the circuit breaker is expounded when the circuit breaker is at 400 Hz system and the temperature is greater than 40℃.An example is given to illustrate the selection and analysis of circuit breaker in a casting workshop of dressing plant.

关 键 词：低压断路器 脱扣器整定 400 Hz系统 温度修正 

分 类 号：TM561[电气工程—电器]