摘要
分析小型断路器的脱扣曲线特性及其在低压配电系统中的应用。指出了在有保护选择要求的场所,不能够选择两串联小型断路器进行配电保护,以及不宜选择小型断路器作为消防负荷的过载保护。该分析有助于小型断路器的正确使用。
The protection features of miniature circuit breaker（MCB） and its application in low-voltage distribution system were analyzed. It was pointed that two MCBs which were connected in series couldnt be selected to protect power distribution system, and the MCB couldnt be selected as over-load protection for fire-fighting equipment in site which needed protective selection. The analysis can help right use for MCB.
出处
《低压电器》
北大核心
2009年第15期49-51,共3页
Low Voltage Apparatus
关键词
小型断路器
脱扣曲线
过负荷保护
miniature circuit breaker（MCB）
release curve
over-load protection
