具有熔断器特性的塑壳式选择性保护直流断路器的应用  

Application of Moulded Case Selective Protection DC Breaker with Fuse Characteristics

作　　者：南寅[1] 张自峰[1] 王洪刚[1] 朱金保[1] 

机构地区：[1]北京人民电器厂有限公司,北京102600

出　　处：《低压电器》2011年第1期52-55,共4页Low Voltage Apparatus

摘　　要：介绍了一种具有熔断器特性的GM5FB系列塑壳式选择性保护直流断路器。它克服了直流熔断器动作离散性大、产品特性无法检测、防护等级低(无防护等级)、报警触头动作不稳定等缺点,创新地将断路器短路脱扣器设计为短路短延时反时限脱扣器;克服了热磁式断路器短路瞬时脱扣器动作选择性差的缺点,同时又具有熔断器易于实现选择性保护,以及热磁式断路器动作稳定性高的优点,是电厂和变电站直流系统蓄电池出口及直流主馈电屏中理想的保护电器。The GM5FB series moulded case selective protection DC breaker with fuse characteristics was intro-duced.It overcame the disadvantages of discreteness,non-detectable product feautres,low protection grade（no protection grade） and unstable alarm contacts action etc,and the breaker short-circuit release was creatively de-signed to short-circuit short time delay inverse time release.The thermal magnetic type breaker short-circuit instan-taneous release had poor action selectivity,but it overcame this disadvantage.It was easy for the fuse to realize se-lective protection,and the thermal magnetic type breaker had high action stability.It was the ideal protection appa-ratus in DC system battery exit and main feed electric screen of power plant and substation.

关 键 词：选择性保护 直流断路器 熔断器 

分 类 号：TM563[电气工程—电器]