电源总线干线截面计算及供电方案探讨——基于火灾自动报警系统  

Calculation of Power Bus Trunk and Discussion on Power Supply Scheme of Automatic Fire Alarm System

作　　者：张文辉[1] 

机构地区：[1]福建省建筑设计研究院,福建福州350001

出　　处：《福建建筑》2017年第5期100-102,共3页Fujian Architecture & Construction

摘　　要：火灾自动报警系统的可靠性很大程度上取决于系统供电的可靠性。为工程设计提供计算依据,避免因选择的电缆截面积过小,造成电压降过大,而导致消防设备在火灾发生时无法可靠动作以及工程建设成本控制,文章推导了在每层均为独立防火分区的典型公共建筑情况下电源总线干线截面积的计算方法,并对比了实际工程中两种不同供电设计方案。The reliability of the automatic fire alarm system depends largely on the reliability of the power supply. If the selected cable cross - section was too small, which resulted in excessive voltage drop, fire - fighting equipment could not be started timely when the fire broke out. To avoid this consequence, the present paper provided a calculation basis for engineering designs through deducing the calculation method for main cable cross - section of power buses in a typical building in which every layer was corresponding to one independent fire compartment, and two different power supply designs in practical projects were compared.

关 键 词：火灾自动报警系统 供电线路电压损失 导线截面选择 

分 类 号：TU855[建筑科学]