With the continuous development of urbanization, the use of galvanized cable bridge can be seen everywhere, whether on the road or in the building. But what do you know about building cable trays? Today, let me explain to you how to select the cable tray inside the building? Hope to help you.

在建筑物內(nèi)安裝電纜橋架，要注意電纜橋架和支吊架、引入和引出金屬電纜導(dǎo)管都要進(jìn)行保護接地，且不能少于2處。當(dāng)允許利用電纜橋架構(gòu)成接地干線回路時，電纜橋架和支吊架、連接板應(yīng)能承受接地故障電流，并且滿足熱效應(yīng)的要求。作為接地干線的電纜橋架，它的托盤、提價端部之間的連接電阻也有一定的要求。

When installing cable trays in buildings, first pay attention to the protective grounding of cable trays, supports and hangers, incoming and outgoing metal cable conduits, and there shall be no less than 2 places. When the cable tray is allowed to form the grounding trunk circuit, the cable tray, supports and hangers and connecting plates shall be able to withstand the grounding fault current and meet the requirements of thermal effect. As the cable tray of the grounding trunk line, the connection resistance between its tray and the price increase end also has certain requirements.

全線單獨敷設(shè)接地干線時，干線可采用扁鋼，室內(nèi)敷設(shè)面積不能小于60平。在引入引出建筑物時，橋架應(yīng)注意與建筑物室內(nèi)接地干線或室外接地裝置相連接。如果使用鋁合金橋架，應(yīng)注意橋架上不能用裸銅作為接地干線，這樣做是為了防止電化學(xué)腐蝕作用。

When the grounding main line is laid separately along the whole line, the main line can adopt flat steel, and the indoor laying area shall not be less than 60 square meters. When introducing and leading out buildings, the bridge shall be connected with the indoor grounding trunk line or outdoor grounding device of the building. If aluminum alloy bridge is used, it shall be noted that bare copper cannot be used as the grounding main line on the bridge to prevent electrochemical corrosion.

對于建筑物內(nèi)部電纜橋架你知道怎么選擇嗎?下面看看槽式電纜橋架、型有孔托盤以及組合式電纜橋架等。

Do you know how to choose the cable tray inside the building? Let's take a look at trough cable tray, energy-saving perforated tray and combined cable tray.

槽式電纜橋架是比較常見的橋架，它別名有蓋無孔型托盤，是全封閉的金屬殼體，具有抑制外部電磁干擾，防護外部有害液體和粉塵侵蝕的作用，如果您的使用環(huán)境有相關(guān)方面的要求，不妨試試這種橋架型式。

Grooved cable tray is a common tray. It is also called covered non perforated tray. It is a fully enclosed metal shell, which can inhibit external electromagnetic interference and protect against external harmful liquid and dust erosion. If your service environment has relevant requirements, you might as well try this tray type.

型有孔托盤(即托盤式電纜橋架)和梯級式電纜橋架大多應(yīng)用在一般情況下，這兩類橋架通風(fēng)散熱性良好，能達(dá)到節(jié)電效果。另外，沒有屏蔽要求的控制電纜也可以使用這兩種橋架。

Energy saving perforated tray (i.e. tray cable tray) and stepped cable tray are mostly used in general. These two types of trays have good ventilation and heat dissipation and can achieve power saving effect. In addition, these two types of trays can also be used for control cables without shielding requirements.

組合式電纜橋架，別名組裝托盤、組合式托盤，在電纜多、荷載重、截面大、具有成片安裝固定的空間條件的場所中可以使用這類橋架。一般組裝托盤都是單層的，更便于敷線和維護。很多大型配電控制的地下技術(shù)夾層中也多使用這類橋架。

Combined cable tray, also known as assembly tray and combined tray, can be used in places with many cables, heavy load, large section and fixed space conditions. Generally, the assembly tray is single-layer, which is more convenient for wiring and maintenance. Many large-scale distribution control underground technology mezzanine also use this kind of bridge.