应用在1140V电路中的DW45万能式断路器改型  

Improvement of DW45 Air Circuit Breaker Applied in the Circuit of 1 140 V

作　　者：王国忠 张正 王栋霖 

机构地区：[1]浙江方圆电气设备检测有限公司,浙江嘉兴314001

出　　处：《低压电器》2013年第20期56-58,共3页Low Voltage Apparatus

摘　　要：DW45万能式断路器(ACB)通过触头结构改进,将原多组并联触头分为两组后绝缘隔离再串联,形成双断点结构,从而将DW45 ACB最高额定工作电压由AC690 V提高到1 140 V,改型后DW45 ACB在AC 1 140 V极限短路分断能力技术指标达到35 kA。By improvement of the contact structure of DW45 air circuit breaker （ ACB ） , the original several groups of parallel contacts were divided into two groups. The two groups were insulated and then connected in series so as to form a double-break-contact structure, thus the maximum rated operating voltage of DW45 ACB was increased from AC 690 V to AC 1 140 V. The technical data of ultimate short circuit breaking capacity of the improved DW45 ACB can reach 35 kA/AC l 140 V.

关 键 词：万能式断路器 双断点触头结构 极限短路分断能力 

分 类 号：TM561.1[电气工程—电器]