你知道橋架內的線纜為什么不能布滿嗎？其實，主要是因為散熱問題，為了讓大家更好的對問題進行了解，下面濟南電纜橋架廠家為您分析。

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.

主要是散熱問題，電纜布的越密發熱越多，電纜載流量越小，就有可能出現用電負荷電流超過電纜實際載流量且并未到達斷路器的過載長延時電流的情況，這時候電纜就會燒斷而燒斷前斷路器不動作。

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.

所以為了安全考慮，國家規范一般規定橋架里的線纜截面積不超過橋架截面積的40%，然而實際執行來說，電纜建議是不要重疊布置，因為重疊布置載流量下降很快，所以我公司一直是按電纜在橋架內只能單層平鋪考慮橋架大小的，不出現電纜重疊的情況。

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.

此外相關的電纜橋架布線原則也需要多加了解，比如：

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

在室內采用電纜橋架布線時，其電纜不應有黃麻或其他易燃材料外護層。

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

在有腐蝕或特別潮濕的場所采用電纜橋架布線時，應根據腐蝕介質的不同采取相應的防護措施，并宜選用塑料護套電纜。

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.

在電纜橋架上可以無間距敷設電纜，電纜在橋架內橫斷面的填充率：電力電纜不應大于40％；控制電纜不應大于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%.

電纜橋架不宜安裝在腐蝕性氣體管道和熱力管道的上方及腐蝕性液體管道的下方，否則應采取防腐、隔熱措施。

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.

針對“橋架內的線纜為什么不能布滿”這個問題，廠家為您進行了分析，您可以作為參考使用，有問題或者需求可以隨時聯系我們http://www.yeeones.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 http://www.yeeones.com ！