Cautions for Cable Bridge Frame Selection

1．電纜橋架在選擇的時(shí)分要遵照以下幾點(diǎn)：

1. The selection of cable bridge should follow the following points:

1.電纜橋架的布置應(yīng)依據(jù)經(jīng)濟(jì)合感性、技術(shù)可行性、運(yùn)轉(zhuǎn)性等要素綜合比較，工程設(shè)計(jì)中。以確定佳方案，還要充沛滿(mǎn)足施工安裝、維護(hù)檢修及電纜敷設(shè)的要求。

1. The layout of cable tray should be based on the comprehensive comparison of economic susceptibility, technical feasibility and operational safety, etc. in engineering design. In order to determine the best scheme, we must fully meet the requirements of construction, installation, maintenance and repair and cable laying.

2.敷設(shè)在電氣公用房間內(nèi)時(shí)除外，電纜橋架程度敷設(shè)在設(shè)備夾層或上人馬道且低于2．5m應(yīng)采取維護(hù)接地措施。電纜橋架程度敷設(shè)時(shí)距空中的高度普通不低于于2.5m垂直敷設(shè)時(shí)距空中1.8m以下部分應(yīng)加金屬蓋板維護(hù)。

2. Except for laying in the electrical public room, the degree of cable bridge is laid in the equipment sandwich or on the pedestrian road and below 2.5m should be taken to maintain the grounding. The height of cable bridge deck laying in the air is not less than 2.5 m when it is laid vertically and less than 1.8 m when it is laid vertically. The metal cover should be maintained in the part below 1.8 m when the cable bridge is laid vertically.

3.應(yīng)采用耐腐蝕的剛性材料制造．或采取防腐蝕處置，電纜橋架、線(xiàn)槽及其支吊架運(yùn)用在有腐蝕性環(huán)境中。防腐蝕處置方式應(yīng)滿(mǎn)足工程環(huán)境和耐久性的要求。對(duì)耐腐蝕功能要求較高或要求干凈的場(chǎng)所，宜選用鋁合金電纜橋架。

3. Corrosion-resistant rigid materials shall be used for manufacturing or corrosion-resistant disposal. Cable bridges, grooves and their hangers shall be used in corrosive environments. Anti-corrosion disposal methods should meet the requirements of engineering environment and durability. Aluminum alloy cable bridge should be selected for places requiring high corrosion resistance or clean performance.

4.可在電纜橋架，電纜橋架在有防火要求的區(qū)段內(nèi)。托盤(pán)內(nèi)添加具有耐火或難燃功能的板，網(wǎng)等材料構(gòu)成封鎖或半封鎖式構(gòu)造，并采取在橋架及其支吊架表面涂刷防火涂層等措施。其全體耐火功能應(yīng)滿(mǎn)足國(guó)度有關(guān)標(biāo)準(zhǔn)或規(guī)范的要求。工程防火要求較高的場(chǎng)所．不宜采用鋁合金電纜橋架。

4. It can be used in cable tray and cable tray in the section with fire protection requirements. The tray is equipped with fire-resistant or non-flammable panels, nets and other materials to form a blockade or semi-blockade structure, and fire-resistant coatings are applied on the surface of the bridge and its support and suspension. All fire-resistant functions shall meet the requirements of relevant national standards or codes. Aluminum alloy cable bridge should not be used in places with high fire protection requirements.

5.需求屏蔽電磁攪擾的電纜線(xiàn)路．或有防護(hù)內(nèi)部影n向如戶(hù)外日照。腐蝕性液體、易燃粉塵等環(huán)境要求時(shí)．應(yīng)選用無(wú)孔托盤(pán)式電纜橋架。

5. Cable lines that need to shield from electromagnetic disturbance. Or there are protective internal shadows such as outdoor sunshine. For corrosive liquids, flammable dust and other environmental requirements, tray-type cable bridge without holes should be selected.

6.電纜橋架應(yīng)選用蓋板；公共通道或室外跨越路途段．底層橋架上宜加墊板或運(yùn)用無(wú)孔托盤(pán)，容易積聚粉塵的場(chǎng)所。

6. Cover plate should be selected for cable tray, public passage or outdoor crossing section. Padding plate or holeless tray should be added on bottom tray, where dust can easily accumulate.

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