低压断路器选型误区探析
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摘要
市场上低压断路器的制造商众多,规格、型号各异。用户在选择使用断路器上还存在一些误区影响了实际使用效果,轻者误动拒动、重者遭受财产损失危及生命。文章试图从产品标准着眼解释几个主要对低压断路器选择认识的误区:如何理解和选择低压断路器的I_(cu)、I_(cs)、I_(cw)等参数,低压断路器的使用类别与全选择性配合的关系,串联断路器间的全选择性和局部选择性保护,断路器脱扣值的误差对选择性配合的影响,低压断路器的允通能量及限流型断路器的作用等,并在分析的基础上给出作者的建议。
There are various LV circuit breakers with different manufacturers, specifications and models available in the market. Regarding circuit breaker selection and using, there are some common mistakes of users that influence the actual effect. At best,such mistakes result in malfunction and movement resistance; at worst, they lead to life and property loss. From the aspect of product standard, issues like several common mistakes in LV circuit breaker selection: understanding and selection of parameters like I_(cu), I_(cs)and I_(cw)of LV circuit breaker; relationship between LV circuit breaker's utilization category and full selective coordination; full and partial selective protections of circuit breakers in series; influence of circuit breaker's trip value on selective coordination;let-though energy of LV circuit breaker and function of current limiting circuit breaker are illustrated.Suggestions are proposed on the basis of analysis.
There are various LV circuit breakers with different manufacturers, specifications and models available in the market. Regarding circuit breaker selection and using, there are some common mistakes of users that influence the actual effect. At best,such mistakes result in malfunction and movement resistance; at worst, they lead to life and property loss. From the aspect of product standard, issues like several common mistakes in LV circuit breaker selection: understanding and selection of parameters like I_(cu), I_(cs)and I_(cw)of LV circuit breaker; relationship between LV circuit breaker's utilization category and full selective coordination; full and partial selective protections of circuit breakers in series; influence of circuit breaker's trip value on selective coordination;let-though energy of LV circuit breaker and function of current limiting circuit breaker are illustrated.Suggestions are proposed on the basis of analysis.
引文
[1]上海电器科学研究所(集团)有限公司,等.GB 14048.2-2008/IEC 60947-2:2006低压开关设备和控制设备第2部分:断路器[S].北京:中国标准出版社,2008.
[2]中国航空工业规划设计研究院.工业与民用配电设计手册[M].第3版.北京:中国电力出版社,2005.
[3]ABB S.p.A ABB SACE Division编著.低压配电设计安装手册[M].第4版.ABB(中国)有限公司译.北京:机械工业出版社,2008.
[4]ABB.Electrical installation handbook-Protection,control and electrical devices-Sixth edition 2010[M].2010:91,92.
[5]西门子(中国)有限公司基础设施和城市业务领域中低压集团.全集成能源管理-供配电系统设计手册第一册:配电系统设计原则[M].
[6]中机中电设计研究院.GB 16895.5-2012/IEC60364-4-43:2008低压电气装置第4-43部分安全防护过电流保护[S].北京:中国标准出版社,2013.
[2]中国航空工业规划设计研究院.工业与民用配电设计手册[M].第3版.北京:中国电力出版社,2005.
[3]ABB S.p.A ABB SACE Division编著.低压配电设计安装手册[M].第4版.ABB(中国)有限公司译.北京:机械工业出版社,2008.
[4]ABB.Electrical installation handbook-Protection,control and electrical devices-Sixth edition 2010[M].2010:91,92.
[5]西门子(中国)有限公司基础设施和城市业务领域中低压集团.全集成能源管理-供配电系统设计手册第一册:配电系统设计原则[M].
[6]中机中电设计研究院.GB 16895.5-2012/IEC60364-4-43:2008低压电气装置第4-43部分安全防护过电流保护[S].北京:中国标准出版社,2013.