1. Bridge height: 6 connecting holes at each end when the height is 50 and 100, and 12 connecting holes at each end when the height is 150 and 200.

2、 支撐距離：支撐距離應小于等于載荷曲線容許載荷和支撐跨距。

2. Support distance: the support distance shall be less than or equal to the allowable load of the load curve and the support span.

3、 橋架寬度：挑選電纜橋架的寬度時，應留有必定的備用空位，以便為往后增加電纜用。

3. Bridge width: when selecting the width of cable bridge, a certain spare space shall be reserved for adding cables in the future.

4、 離隔敷設：當電力電纜和控制電纜較少時，可以在同一電纜橋架起備，但中心須用隔板將電力電纜和控制電纜離隔敷設。

4. Separated laying: when there are few power cables and control cables, they can be prepared in the same cable tray, but the center must use partitions to separate the power cables and control cables.

5、 電纜固定：匯線橋架水平敷設時，橋架之間的聯接應盡量設置在跨距1/4處。水平走向的電纜每隔2米左右固定一下，筆直走向的電纜每隔1.5米左右固定一下。

5. Cable fixation: when the junction cable tray is laid horizontally, the connection between the trays shall be set at 1 / 4 of the span as far as possible. Horizontal cables shall be fixed every 2 meters, and straight cables shall be fixed every 1.5 meters.

非常注意

Particular attention

1、如果設備場所為具有腐蝕性或者是非常濕潤的環(huán)境，那么在布線時就有必要要依據腐蝕介質的不同來選用相應的防護方法。

1. If the equipment site is a corrosive or very humid environment, it is necessary to select corresponding protection methods according to different corrosive media during wiring.

2、若是將幾組電纜橋架一同在同一高度進行平整設備的時分，就需要考慮各組電纜橋架之間的維護和檢修距離。

2. If several groups of cable trays are leveled at the same height, the maintenance and overhaul distance between each group of cable trays needs to be considered.

3、在大跨距電纜橋架上時可以進行無距離敷設電纜的，電力電纜在橋架內的橫斷面填充率要在40%以下，而控制電纜則應小于橋架橫斷面積的一半。

3. When the cable can be laid on the long-span cable bridge without distance, the filling rate of the cross section of the power cable in the bridge shall be less than 40%, while the control cable shall be less than half of the cross-sectional area of the bridge.

4、設備大跨距電纜橋架的時分不能設備在具有腐蝕性氣體管道以及熱力管道的上方，在腐蝕性液體管道的下方也不能直接設備電纜橋架，若是有必要如此的話則應做好防護和隔熱方法。

4. The equipment cable tray with large span shall not be placed above the corrosive gas pipeline and heat pipeline, nor directly below the corrosive liquid pipeline. If necessary, protection and heat insulation methods shall be taken.