電纜橋架廠(chǎng)家認(rèn)為當(dāng)選擇電纜橋架時(shí)，根據(jù)不同要求和環(huán)境特點(diǎn)，有一些關(guān)鍵注意事項(xiàng)需要考慮。

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

，在需要屏蔽電氣干擾或受外部環(huán)境影響（如腐蝕液體、易燃粉塵等）的情況下，適宜選擇帶蓋的（FB）類(lèi)槽式復(fù)合型防腐屏蔽電纜橋架，以提供更好的防護(hù)。同樣，在強(qiáng)腐蝕環(huán)境下，采用（F）類(lèi)復(fù)合環(huán)氧樹(shù)脂防腐阻燃型電纜橋架及托臂、支架，以延長(zhǎng)使用壽命。特別是在易積灰或需要覆蓋的戶(hù)外環(huán)境，添加蓋板有助于保護(hù)橋架及其附件。

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，根據(jù)現(xiàn)場(chǎng)環(huán)境和技術(shù)需求，可選擇托盤(pán)式、槽式、梯級(jí)式、玻璃防腐阻燃電纜橋架或鋼質(zhì)普通型橋架。在公共通道或戶(hù)外跨越道路段，建議在底層梯級(jí)的底部加墊板或采用托盤(pán)。對(duì)于大跨距（>3m）的情況，宜選用復(fù)合型橋架（FB），并且在戶(hù)外環(huán)境應(yīng)考慮復(fù)合環(huán)氧樹(shù)脂橋架（F）的選擇。

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.

在電纜橋架系統(tǒng)設(shè)計(jì)上，必須確保具備可靠的電氣連接和接地，特別對(duì)于金屬橋架。對(duì)于構(gòu)成接地干線(xiàn)回路的情況，端部之間的連接電阻應(yīng)控制在規(guī)定范圍內(nèi)，并且應(yīng)清理接地孔的絕緣涂層。此外，在1KV以下的中性點(diǎn)直接接地系統(tǒng)中，必須連接受電設(shè)備的接地和系統(tǒng)中性線(xiàn)接地。若存在處動(dòng)切斷供電裝置，橋架的金屬橫截面積應(yīng)符合規(guī)定。另外，在振動(dòng)場(chǎng)所，接地部位的連接處應(yīng)安裝彈簧圈以確保連接牢固。

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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