电缆桥架厂家认为当选择电缆桥架时，根据不同要求和环境特点，有一些关键注意事项需要考虑。

Cable tray manufacturers believe that when selecting cable trays, there are some key considerations to consider based on different requirements and environmental characteristics.

，在需要屏蔽电气干扰或受外部环境影响（如腐蚀液体、易燃粉尘等）的情况下，适宜选择带盖的（FB）类槽式复合型防腐屏蔽电缆桥架，以提供更好的防护。同样，在强腐蚀环境下，采用（F）类复合环氧树脂防腐阻燃型电缆桥架及托臂、支架，以延长使用寿命。特别是在易积灰或需要覆盖的户外环境，添加盖板有助于保护桥架及其附件。

Firstly, when it is necessary to shield electrical interference or external environmental influences (such as corrosive liquids, flammable dust, etc.), it is appropriate to choose a covered (FB) type slot type composite anti-corrosion shielded cable tray to provide better protection. Similarly, in highly corrosive environments, it is recommended to use (F) class composite epoxy resin anti-corrosion and flame-retardant cable trays, brackets, and brackets to extend their service life. Especially in outdoor environments that are prone to dust accumulation or require coverage, adding covers can help protect the bridge and its accessories.

除此之外，根据现场环境和技术需求，可选择托盘式、槽式、梯级式、玻璃防腐阻燃电缆桥架或钢质普通型桥架。在公共通道或户外跨越道路段，建议在底层梯级的底部加垫板或采用托盘。对于大跨距（>3m）的情况，宜选用复合型桥架（FB），并且在户外环境应考虑复合环氧树脂桥架（F）的选择。

In addition, according to the on-site environment and technical requirements, tray type, trough type, stepped type, glass anti-corrosion flame-retardant cable tray or steel ordinary type cable tray can be selected. It is recommended to add padding or use pallets at the bottom of the bottom steps in public passages or outdoor crossing road sections. For situations with large spans (>3m), it is advisable to choose composite cable trays (FB), and the selection of composite epoxy resin cable trays (F) should be considered in outdoor environments.

在电缆桥架系统设计上，必须确保具备可靠的电气连接和接地，特别对于金属桥架。对于构成接地干线回路的情况，端部之间的连接电阻应控制在规定范围内，并且应清理接地孔的绝缘涂层。此外，在1KV以下的中性点直接接地系统中，必须连接受电设备的接地和系统中性线接地。若存在处动切断供电装置，桥架的金属横截面积应符合规定。另外，在振动场所，接地部位的连接处应安装弹簧圈以确保连接牢固。

In the design of cable tray systems, reliable electrical connections and grounding must be ensured, especially for metal trays. For the case of forming a grounding main circuit, the connection resistance between the ends should be controlled within the specified range, and the insulation coating of the grounding hole should be cleaned. In addition, in neutral point directly grounded systems below 1KV, it is necessary to connect the grounding of the receiving equipment and the grounding of the system neutral line. If there is a power cut-off device, the metal cross-sectional area of the bridge should meet the regulations. In addition, in vibration areas, spring coils should be installed at the connection of the grounding part to ensure a secure connection.

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