低压电线电缆不同敷设方式的载流量问题  

Current-carrying Capacity of Low-voltage Wires & Cable with Different Laying Methods

作　　者：谢炜 任长宁 

机构地区：[1]苏州一科科建建筑设计研究院有限公司,江苏省苏州市215006 [2]美国理想工业中国有限公司北京代表处,北京市100028

出　　处：《建筑电气》2014年第10期49-52,共4页Building Electricity

摘　　要：结合GB/T 16895.15-2002/idt IEC60364-5-523:1999《建筑物电气装置第5部分:电气设备的选择和安装第523节:布线系统载流量》标准,指出在工程设计中应正确选择低压电线电缆的载流量,区分线缆敷设在槽盒、托盘与梯架内的载流量不同,并注意多回路或多根多芯电缆不同敷设方式成束敷设的降低系数,建议积极采用IEC标准,提高电气安全性。The paper points out that the current-carrying capacity of the Low-voltage wires and cables shall be correctly selected during the engineering design and distinguished when laying in trunking, trays and ladders, in combination with GB/T 16895. 15-2002/idt IEC 60364-5-523： 1999 《Electrical installations of buildings-Part 5： Selection and erection of electrical equipment-Section 523： Current-carrying capacities in wiring systems》. In addition, the reduction factor of multi-loop or multi-core cables laid in bundles shall be considered. It is suggested to adopt the IEC standard to improve the electric safety.

关 键 词：IEC标准 载流量 降低系数 槽盒 托盘 梯架 电气火灾 防电击 

分 类 号：TU852[建筑科学]