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桥架电缆安装工艺要点有哪些

槽式电缆桥架需了解的要点很多,今天我们说一下它的接地要点。
There are many key points to understand for trough type cable tray. Today, let's talk about its grounding points.
1.槽式电缆桥架系统应有可靠的电气连接并接地。
1. Trough type cable tray system shall have reliable electrical connection and grounding.
2.当允许利用槽式电缆桥架系统构成接地干线回路时,要符合以下要求。桥架端部之间连接电阻不能大于0.00033欧姆,要清理接地孔的绝缘涂层。在1KV及以下中性点直接接地系统中,受电设备的接地与系统中性线接地要保持相连。
2. When the trough cable tray system is allowed to form the grounding trunk circuit, the following requirements shall be met. The connection resistance between the ends of the bridge shall not be greater than 0.00033 ohm, and the insulating coating of the grounding hole shall be cleaned. In the neutral point direct grounding system of 1kV and below, the grounding of power receiving equipment shall be connected with the neutral line grounding of the system.
3.沿槽式电缆桥架全长另敷设接地干线时,要保证每段桥架有至少一点与接地干线可靠连接。
3. When laying another grounding main line along the whole length of the trough cable tray, ensure that at least one point of each cable tray is reliably connected with the grounding main line.
4.对于振动场所,要求在它的接地部位连接处安装弹簧圈。
4. For vibration places, it is required to install spring rings at the connection of its grounding parts.
线槽桥架安装工艺要点
Key points of installation process of trunking and Bridge
1.平直线段桥架吊架间距1.5m~2m,如果采用吊杆支架,吊杆直径不应小于8mm,且需在过梁处应设置固定支架。
1. The distance between the bridge hangers in the straight section is 1.5m ~ 2m. If the suspender support is used, the diameter of the suspender shall not be less than 8mm, and the fixed support shall be set at the lintel.
2.转弯处两边各设一组吊架,且两组吊架对称布置,间距不大于1.5米,否则转弯中间位置增设一组吊架。
2. A group of hangers shall be set on both sides of the turn, and the two groups of hangers shall be arranged symmetrically with a spacing of no more than 1.5m, otherwise a group of hangers shall be added in the middle of the turn.
3.转弯处两边各设一组吊架,且两组吊架对称布置,间距不大于1.5米,否则转弯中间位置增设一组吊架;顶层桥架距楼板距离不小于150mm,上下层桥架间距不小于150mm。
3. A group of hangers shall be set on both sides of the turn, and the two groups of hangers shall be symmetrically arranged with a spacing of no more than 1.5m, otherwise a group of hangers shall be added in the middle of the turn; The distance between the top tray and the floor slab shall not be less than 150mm, and the distance between the upper and lower trays shall not be less than 150mm.
4.桥架、线槽按砼特殊角度准确放样、加工、安装。
4. The bridge and trunking shall be accurately set out, processed and installed according to the special angle of concrete.
5.直线段钢制电缆桥架长度超过30米、铝合金或者玻璃钢制电缆桥架长度超过15米设有伸缩节;电缆桥架跨越建筑物变形缝处设置补偿装置。
5. The length of steel cable tray in straight section exceeds 30m, and the length of aluminum alloy or FRP cable tray exceeds 15m, with expansion joints; Compensation device shall be set at the deformation joint where the cable tray crosses the building.
以上就是为大家介绍的有关山东电缆桥架的详细介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以的态度,为您提供服务http://www.sdhangfeng.com
The above is the detailed introduction of Shandong cable tray, which I hope will help you If you have any questions, please contact us We will provide you with professional service http://www.sdhangfeng.com
 
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