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、 支撑距离：支撑距离应小于等于载荷曲线容许载荷和支撑跨距。

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、 桥架宽度：挑选电缆桥架的宽度时，应留有必定的备用空位，以便为往后增加电缆用。

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

4、 离隔敷设：当电力电缆和控制电缆较少时，可以在同一电缆桥架起备，但中心须用隔板将电力电缆和控制电缆离隔敷设。

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、 电缆固定：汇线桥架水平敷设时，桥架之间的联接应尽量设置在跨距1/4处。水平走向的电缆每隔2米左右固定一下，笔直走向的电缆每隔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.

特别注意

Particular attention

1、如果设备场所为具有腐蚀性或者是非常湿润的环境，那么在布线时就有必要要依据腐蚀介质的不同来选用相应的防护方法。

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、若是将几组电缆桥架一同在同一高度进行平整设备的时分，就需要考虑各组电缆桥架之间的维护和检修距离。

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、在大跨距电缆桥架上时可以进行无距离敷设电缆的，电力电缆在桥架内的横断面填充率要在40%以下，而控制电缆则应小于桥架横断面积的一半。

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、设备大跨距电缆桥架的时分不能设备在具有腐蚀性气体管道以及热力管道的上方，在腐蚀性液体管道的下方也不能直接设备电缆桥架，若是有必要如此的话则应做好防护和隔热方法。

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.