河北华盛电缆桥架的荷载选择与电缆敷设知识

河北华盛电缆桥架的荷载选择与电缆敷设知识

从技术要求上考虑：不同电压、用途的电缆不适合敷设在同一层电缆桥架内：

一个比较重要的地方，若不同等级的电缆敷设在同一电缆桥架时，中间应增加隔板隔离。当钢制电缆桥架直线段长度超出30m，铝合金电缆桥架超出15m时.或当电缆桥架经过建筑伸缩(沉降)缝时应留有O-30mm补偿余量.其连接宜采用伸缩连接板。而且设计的时候要考虑一下几点，同一路径向一级负荷供电的双回路电缆;第二1kV以上和1kV及以下的电缆；第三应急照明和其他照明的电缆;最后电力，控制和电信电缆。

电缆桥架的荷载等级选择时，电缆桥架的工作均布荷载不应大于所选电缆桥架荷载等级的额定均布荷载，如果电缆桥架的支吊架的实际跨距不等于2m时。电缆梯架、托盘宽度和高度的选择应符合填充率的要求，电缆在梯架、托盘内的填充率一般情况下，动力电缆可取40%-50%，控制电缆可取50%-70%.且宜预留l0%-25%工程发展裕量。

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