When installing the cable tray, one operation step is to install the grounding, and this installation operation must be carried out correctly, otherwise once the wiring error will seriously affect the later use safety. So let's talk about some precautions when changing the bridge grounding installation.

1、電纜橋架系統(tǒng)應(yīng)具有可靠的電氣連接并接地（只對金屬橋架）。

1. The cable tray system shall have reliable electrical connection and grounding (only for metal tray).

2、當允許利用橋架系統(tǒng)構(gòu)成接地干線回路時應(yīng)符合下列要求。橋架端部之間連接電阻應(yīng)不大于0.00033歐姆，接地孔應(yīng)絕緣涂層。在1KV及以下中性點直接接地系統(tǒng)中，受電設(shè)備的接地與系統(tǒng)中性線接地相連。裝有處動切斷供電裝軒時，橋架的級長方向金屬橫截面積應(yīng)不小于規(guī)定值。

2. When the bridge system is allowed to form the grounding trunk circuit, the following requirements shall be met. The connection resistance between bridge ends shall not be greater than 0.00033 ohm, and the insulating coating shall be removed from the grounding hole. In the neutral point direct grounding system of 1kV and below, the grounding of power receiving equipment is connected with the neutral line grounding of the system. When a power cut-off device is installed, the metal cross-sectional area in the level direction of the bridge shall not be less than the specified value.

3、沿電纜橋架全長另敷設(shè)接地干線時，每段（包括非直線段）橋架應(yīng)少有一點與接地干線可靠連接。

3. When another grounding main line is laid along the whole length of the cable tray, at least one point of each section (including non-linear section) of the tray shall be reliably connected with the grounding main line.

4、對于振動場所，在接地部位的連接處應(yīng)裝置彈簧圈。

4. For vibration places, spring coils shall be installed at the connection of grounding parts.

所以大家在進行電纜橋架接地安裝的時候，一定要多加注意以上這些內(nèi)容，并嚴格按照正確的方法步驟來進行接地操作，從而更好地、更快的完成橋架的接地安裝操作。

Therefore, when installing the cable tray grounding, we must pay more attention to the above contents, and carry out the grounding operation in strict accordance with the correct methods and steps, so as to better and faster complete the bridge grounding installation operation.