Cable bridge is the full name of the rigid structure system with dense supporting cables, which is composed of the straight section, bending channel, member, supporting arm (arm bracket), hanger, etc. of the bridge or ladder. Trough type cable tray is a kind of component bent from all steel plates into trough type. The difference between its concept and trough type cable tray is that the height is different, the width ratio is different, the trough type cable tray is shallow and wide, and the trough type cable tray has a certain depth and closure.

　　槽式電纜橋架可用于全封閉電纜敷設。更適用于高敏感系統(tǒng)的計算機電纜、通信電纜、熱電偶電纜等控制電纜的敷設。對控制電纜的屏蔽干擾和電纜在重腐蝕環(huán)境中的保護效果良好。

　　Trough type cable tray can be used for fully enclosed cable laying. It is most suitable for laying computer cables, communication cables, thermocouple cables and other control cables in highly sensitive systems. The shielding interference of the control cable and the protection effect of the cable in the heavy corrosion environment are good.

　　通道式電纜橋架接地點:

　　Channel type cable tray grounding point:

　　1. 電橋系統(tǒng)應具有可靠的電氣連接和接地(僅適用于金屬電橋)。

　　1. The bridge system shall have reliable electrical connection and grounding (only applicable to metal bridge).

　　2. 當允許橋接系統(tǒng)構成接地主電路時，應滿足下列要求。電橋兩端連接電阻不大于0.00033歐姆，并絕緣涂層的接地孔。在中性點1KV及以下的直接接地系統(tǒng)中，接收設備的接地與系統(tǒng)的中性點接地連接。電源站安裝動態(tài)切斷時，橋步長方向的金屬截面積不得小于規(guī)定值。

　　2. When the bridge system is allowed to form the ground main circuit, the following requirements shall be met. The connection resistance at both ends of the bridge shall not be greater than 0.00033 ohm, and the grounding hole of the insulating coating shall be removed. In the direct grounding system with the neutral point of 1kV and below, the grounding of the receiving equipment is connected with the neutral point of the system. When the power station is installed with dynamic cut-off, the metal cross-sectional area in the direction of bridge step length shall not be less than the specified value.

　　3.當接地線沿橋架全跨敷設時，各區(qū)段(包括非直線區(qū)段)應少與接地線有一個可靠的連接點。

　　3. When the grounding wire is laid along the whole span of the bridge, each section (including non-linear section) shall have at least one reliable connection point with the grounding wire.

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