你知道桥架内的线缆为什么不能布满吗？其实，主要是因为散热问题，为了让大家更好的对问题进行了解，下面 济南电缆桥架厂家为您分析。

Do you know why the cables in the cable tray cannot be filled? In fact, it is mainly because of the heat dissipation problem. In order to let everyone better understand the problem, the following Jinan cable tray manufacturer will analyze it for you.

主要是散热问题，电缆布的越密发热越多，电缆载流量越小，就有可能出现用电负荷电流超过电缆实际载流量且并未到达断路器的过载长延时电流的情况，这时候电缆就会烧断而烧断前断路器不动作。

It is mainly a heat dissipation problem. The denser the cable cloth is, the more heat is generated and the smaller the cable current carrying capacity is. It is possible that the electrical load current exceeds the actual cable current carrying capacity and does not reach the overload long delay current of the circuit breaker. At this time, the cable will be burnt out and the circuit breaker will not act before burning out.

所以为了安全考虑，规范一般规定桥架里的线缆截面积不超过桥架截面积的40%，然而实际执行来说，电缆建议是不要重叠布置，因为重叠布置载流量下降很快，所以我公司一直是按电缆在桥架内只能单层平铺考虑桥架大小的，不出现电缆重叠的情况。

Therefore, for safety reasons, it is generally stipulated in national regulations that the cross-sectional area of cables in the cable tray shall not exceed 40% of the cross-sectional area of the cable tray. However, in practice, it is recommended not to overlap the cables. Because the current carrying capacity of the overlapping arrangement decreases rapidly, our company has always considered the size of the cable tray according to the fact that cables can only be laid in a single layer in the bridge frame, without cable overlap.

此外相关的电缆桥架布线原则也需要多加了解，比如：

In addition, we also need to know more about the relevant cable tray routing principles, such as:

在室内采用电缆桥架布线时，其电缆不应有黄麻或其他易燃材料外护层。

When cable tray wiring is adopted indoors, its cable shall not have outer sheath of jute or other flammable materials.

在有腐蚀或特别潮湿的场所采用电缆桥架布线时，应根据腐蚀介质的不同采取相应的防护措施，并宜选用塑料护套电缆。

When cable tray wiring is used in places with corrosion or especially damp, corresponding protective measures shall be taken according to different corrosive media, and plastic sheathed cables shall be selected.

在电缆桥架上可以无间距敷设电缆，电缆在桥架内横断面的填充率：电力电缆不应大于40％；控制电缆不应大于50％。

The cable can be laid on the cable tray without spacing. The filling rate of the cross section of the cable in the cable tray: the power cable shall not be greater than 40%; The control cable shall not be greater than 50%.

电缆桥架不宜安装在腐蚀性气体管道和热力管道的上方及腐蚀性液体管道的下方，否则应采取防腐、隔热措施。

The cable tray should not be installed above the corrosive gas pipeline, thermal pipeline and below the corrosive liquid pipeline, otherwise anti-corrosion and thermal insulation measures should be taken.

针对“桥架内的线缆为什么不能布满”这个问题，厂家为您进行了分析，您可以作为参考使用，有问题或者需求可以随时联系我们 //www.comprepyme.com！

The manufacturer has analyzed the problem of "why the cables in the cable tray cannot be full", and you can use it as a reference. If you have problems or need, you can contact us at any time //www.comprepyme.com ！