1, the height of the ground should be lower than 2.50M when the cable tray is installed horizontally, and the metal cover shall be added to the 1.80m below.

　　2、在電纜橋架布線時(shí)，其電纜不應(yīng)有黃麻或其他易延燃材料外護(hù)層。

　　2. When cable bridge cabling is used indoors, the cable should not have jute or other easy - to - burn material outer protective layer.

　　3、電纜橋架與各種管道平行或交叉時(shí)，其小凈距應(yīng)符合表DQ4-1的規(guī)定，電纜橋架不宜安裝在腐蝕性氣體管道和熱力管道的上方及腐蝕性液體管道的下方，否則應(yīng)采取防腐、隔熱措施。

　　3, when the cable bridge is parallel or crossing with all kinds of pipelines, its minimum net distance should comply with the regulation of table DQ4-1. The cable bridge shall not be installed below the corrosive gas pipeline and the heating pipeline and below the corro
sive liquid pipeline, otherwise, the corrosion protection and heat insulation measures shall be taken.

　　4、在有腐蝕或特別潮濕的場(chǎng)所采用電纜橋架布線時(shí)，應(yīng)根據(jù)腐蝕介質(zhì)的不同采取相應(yīng)的防護(hù)措施，并宜選用塑料護(hù)套電纜。

　　4, when there are corrosive or especially wet places for cabling, the corresponding protective measures should be taken according to the different corrosive media, and plastic sheathed cables should be chosen.

　　5、在電纜橋架上可以無間距敷設(shè)電纜，電纜在橋架內(nèi)橫斷面的填充率：電力電纜不應(yīng)大于40％；控制電纜不應(yīng)大于50％。

　　5, on the cable bridge, the cable can be laid at no distance, and the filling rate of the cable in the cross section of the bridge shall not be greater than 40%, and the control cable should not be greater than 50%.

　　6、電纜橋架水平安裝時(shí)，宜按荷載曲線選取佳跨距進(jìn)行支撐，跨距一般為1．5～3m。垂直敷設(shè)時(shí)，其固定點(diǎn)間距不宜大于2m。幾組電纜橋架在同一高度平行安裝時(shí)，各相鄰電纜橋架間應(yīng)考慮維護(hù)、檢修距離。

　　6. When the cable bridge is installed horizontally, the best span should be selected according to the load curve, and the span is generally 1.5 ~ 3M. The spacing of the fixed point should not be greater than 2m when vertical laying.  When several groups of cable bridges are installed at the same height, the distance between the adjacent cables should be considered for maintenance and maintenance.

　　7、電纜橋架內(nèi)的電纜應(yīng)在下列部位進(jìn)行固定。垂直敷設(shè)時(shí)，電纜的上端及每隔1．50～2m處。水平敷設(shè)時(shí)，電纜的首、尾兩端、轉(zhuǎn)彎及每隔5～10m處。

　　7. The cable in the cable bridge shall be fixed in the following parts. When vertical laying, the upper end of the cable and every 1.50 to 2m. At the time of horizontal laying, the head and tail ends of the cable, the turn and every 5 to 10m.

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