电缆桥架安装须知
(1) 电缆桥架由室外进入建筑物内时, 桥架向外的坡度不得小于1%。
(2) 电缆桥架与用电设备交越时, 其间的净距不小于0.5 m。
(3) 两组电缆桥架在同一高度平行敷设时, 其间净距不小于0.6 m。
(4) 在平行图上绘出桥架的路由, 要注明桥架起点、终点、拐弯点、分支点及升降点的坐标或定位尺寸、标高, 如能绘制桥架敷设轴侧图, 则对材料统计将更精确。
(5) 电缆桥架宜高出地面2.2 m以上, 桥架顶部距顶棚或其他障碍物不应小于0.3 m, 桥架宽度不宜小于0.1 m, 桥架内横断面的填充率不应超过50%。
(6) 电缆桥架内缆线垂直敷设时, 在缆线的上端和每间隔1.5 m处应固定在桥架的支架上, 水平敷设时, 在缆线的首尾端、转弯及每间隔3~5 m处进行固定。
(7) 在吊顶内设置时, 槽盖开启面应保持80 mm的垂直净空, 线槽截面利用率不应超过50%。
Installation instructions of cable tray
(1) when the cable bridge frame enters the building from outside, the slope outward from the bridge frame shall not be less than 1%.
(2) the net distance between the cable bridge frame and the electrical equipment shall not be less than 0.5m.
(3) when two sets of cable Bridges are laid in parallel at the same height, the net distance between them shall not be less than 0.6m.
(4) on the parallel figure draw bridge routing, to indicate the bridge starting point and end point, the turning point, or positioning of the coordinates of the branch points and lifting point size, elevation, such as can map bridge laying shaft side, then on the material statistics will be more accurate. [...].
(5) the cable bridge frame should be more than 2.2m above the ground, the top of the bridge frame should not be less than 0.3m from the ceiling or other obstacles, the width of the bridge frame should not be less than 0.1m, and the filling rate of cross-section in the bridge frame should not be more than 50%. [...].
(6) cable tray cable inside the vertical run, at the top of the cable and intervals of 1.5 m should be fixed on the bridge of the stent, run level, the first end of the cable, and turn every 3 ~ 5 m for a fixed interval. [...].
(7) when installed in the ceiling, the opening surface of the groove cover shall be maintained at a vertical clearance of 80mm, and the utilization rate of line groove section shall not exceed 50%. [...].
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