F-C回路中电动机保护用熔断器的选型  

Selection of Fuse for Motor in F-C Circuit

作　　者：方学霞[1,2] 

机构地区：[1]华北电力大学,北京102206 [2]安徽省电力设计院,安徽合肥230601

出　　处：《安徽电气工程职业技术学院学报》2014年第1期35-39,共5页Journal of Anhui Electrical Engineering Professional Technique College

摘　　要：火力发电厂的高压厂用电源设计中,F-C柜被广泛应用于电动机电源回路,在电动机F-C电源柜中高压限流熔断器作为短路保护,开断短路电流;而综保装置作为过载保护,配合接触器切断过载电流。两者互相配合组成两段式电流保护。文章分析了F-C回路中电动机保护用熔断器的选择方法及与微机保护的配合原则,并对工程实例进行了分析。F-C circuit is widely used for motor power in thermal power plant. In the F-C circuit, the high- voltage current-limiting fuse opens short-circuit current as short-circuit protection, meantime computerized protection with contact opens overload current as overload protection. They make up two-stage overcurrent protection by working together. This article describes the selection method of the fuse for motor in the F-C circuit, and the coordination principle between the fuse and the computerized protection, analyses the engineering examples.

关 键 词：F-C回路 电动机 熔断器 微机保护 配合 

分 类 号：TM582[电气工程—电器]