隔离开关、熔断器性能及在低压配电中的应用  

Performance of Switch-disconnector and Fuse and Their Application in Low-voltage Distribution System

作　　者：任元会 REN Yuanhui(China Aviation Planning and Design Institute （Group） Co., Ltd., Beijing 100120, China)

机构地区：[1]中国航空规划设计研究总院有限公司,北京市100120

出　　处：《建筑电气》2016年第10期3-7,共5页Building Electricity

摘　　要：阐述熔断器在低压配电系统中的地位、依据标准,比较、分析熔断器和断路器主要性能,探讨低压配电线路保护电器选型、熔断器熔体电流值确定、隔离开关功能和应用等问题。针对当前建筑电气设计中隔离开关、熔断器应用中存在的问题提出建议,特别指出:应正确理解熔断器和断路器的特点和各自优势,恰当选用这两种保护电器,改变我国多年来单一选用断路器的状况。This paper elaborates the status and standards of fuse in low-voltage distribution system, compares and analyzes the main performance of fuse and breaker, and discusses issues including the type selection of protection electric appliances for low- voltage distribution lines, determination of current value of fuse-element as well as functions and application of switch-disconnectors. Recommendations on existing problems regarding to the application of swltch-disconnector and fuse in current electrical design are proposed. It is pointed out that we should correctly understand the respective features and advantages of fuse and breaker and select such electric appliances in a proper manner so as to change the situation in China where breakers have always been selected alone over the years.

关 键 词：低压配电系统 隔离开关 熔断器 断路器 保护电器选型 选择性 熔体电流 通断能力 

分 类 号：TM56[电气工程—电器]