Cautions for Cable Bridge Frame Selection

1．电缆桥架在选择的时分要遵照以下几点：

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

1.电缆桥架的布置应依据经济合感性、技术可行性、运转性等要素综合比较，工程设计中。以确定佳方案，还要充沛满足施工安装、维护检修及电缆敷设的要求。

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.敷设在电气公用房间内时除外，电缆桥架程度敷设在设备夹层或上人马道且低于2．5m应采取维护接地措施。电缆桥架程度敷设时距空中的高度普通不低于于2.5m垂直敷设时距空中1.8m以下部分应加金属盖板维护。

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.应采用耐腐蚀的刚性材料制造．或采取防腐蚀处置，电缆桥架、线槽及其支吊架运用在有腐蚀性环境中。防腐蚀处置方式应满足工程环境和耐久性的要求。对耐腐蚀功能要求较高或要求干净的场所，宜选用铝合金电缆桥架。

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.可在电缆桥架，电缆桥架在有防火要求的区段内。托盘内添加具有耐火或难燃功能的板，网等材料构成封锁或半封锁式构造，并采取在桥架及其支吊架表面涂刷防火涂层等措施。其全体耐火功能应满足国度有关标准或规范的要求。工程防火要求较高的场所．不宜采用铝合金电缆桥架。

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.需求屏蔽电磁搅扰的电缆线路．或有防护内部影n向如户外日照。腐蚀性液体、易燃粉尘等环境要求时．应选用无孔托盘式电缆桥架。

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.电缆桥架应选用盖板；公共通道或室外跨越路途段．底层桥架上宜加垫板或运用无孔托盘，容易积聚粉尘的场所。

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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For more details about the cable bridge in Shandong, please go to our website: http://www.sdhangfeng.com, thank you!!