Summary of construction experience of integrated wiring in weak current projects, here are all useful dry goods
Integrated wiring is a modular, highly flexible information transmission channel within or between buildings. It can not only connect voice, data, image equipment and switching equipment with other information management systems, but also connect these equipment with the outside world. It also includes all cables and related connection components between the connection point of the network or telecommunication line outside the building and the application system equipment. The integrated wiring system consists of components of different series and specifications, including: transmission media, related connection hardware (such as patch panels, connectors, sockets, plugs, adapters) and electrical protection equipment. These components can be used to build various subsystems, each of which has its own specific purpose.
Summary of construction experience of integrated wiring in weak current projects, here are all useful dry goods
Seven Parts of Integrated Cabling System
Work area; wiring subsystem; trunk subsystem; building group subsystem; equipment room; incoming line and management. In fact, there are certain rules to be followed in the wiring work, and this rule is not only reflected in the relevant norms and standards to be followed in the implementation of structured wiring projects.
Preparation before construction of integrated wiring
As a construction organizer, you must be clear-headed and have a sense of responsibility. According to the completion time of the pipe groove and the time requirements of the subsequent installation and decoration of the wiring system, the threading schedule and the measures to ensure the quality are listed. Strictly carry out threading inspection before threading. For specific requirements, please refer to the corresponding pipe groove inspection requirements. The pipe groove quality problems that seriously affect the quality and progress of threading include: small pipe groove size; Etc.; the buried pipe groove must be fully tried before threading. The documents to be prepared include: wiring system system diagram; wiring system floor plan; wiring technical requirements and blank wiring report.
Comprehensive wiring project implementation
First carry out threading organization planning. The key to organizing threading lies in the construction organizer. The construction organizer should: understand the overall structure of the wiring system, and do not thread the wrong route; can clearly distinguish the various cables to be laid, and do not use the wrong cable; Passed pipelines have rich experience in threading; know how to prevent typical problems that affect the quality and progress of threading; understand the special requirements of cable laying in the integrated wiring system; have clear thinking, group information points and lay them in groups, not many No leakage; each group should not exceed 20 information points, otherwise the amount of cables to be threaded at the same time is large, and the laborious threading and laying will easily cause damage to the cables, and it is also easy to be entangled and knotted, which will greatly affect the progress; label carefully, and Record the length scale; strictly organize the test, and use the detection instrument to measure the on-off status of the cables one by one.
Threading should be carried out according to the process requirements. Pipe groove inspection, steel pipe guarding, buried steel pipe try-on. Explain the structure of the wiring system, the threading process, the quality points and the protection of cables to all those involved in the threading. Plan the grouping, route the cables group by group, and for one of the groups, select the starting point for the threading. Transport the cable to the starting point, mark it, mark the scale at the end of the patch panel, thread this group to the patch panel, and leave the remaining length as required. Measure the length from the starting point to the socket end, truncate, label, and mark the socket end scale. The socket end is coiled within the socket box. Conduct on-off test for each cable, make up wear, and correct labeling errors. Finally, organize the threading report and buckle the cable slot cover.
At the wiring box, the remaining length from the entrance of the wiring cabinet is the (length + width + depth) of the wiring cabinet. Cabinets and cable management troughs should be well organized. The remaining threads should be grouped according to the grouping table, straightened and bound from the outlet of the trunking, and the distance between the binding points should not be greater than 50cm. It cannot be tied with iron wire or hard power cord. The turning radius of the 50-core cable should not be less than 162mm. When the vertical cable is transferred to the vertical steel pipe through the wire box and routed to the next floor, it must be tied and suspended in the wire box to prevent the weight of the cable from fully pressing on the inner cable of the bend, which will affect the transmission characteristics of the cable. The cables laid out in the trunking should be straight, free of twists, and of different lengths.
The cables are labeled according to the design plane diagram, each label corresponds to a 4-pair cable, and the corresponding room and socket location cannot be mistaken. The position of the labels at both ends is 25 cm away from the end, paste light-colored plastic tape, write the label with an oil-based pen or stick the quality label on it, and then wrap the transparent tape. In addition, from the end of the distribution frame to the entrance of the distribution cabinet, every 1 meter should be used to stick the label paper on the cable sheath and write the label with an oily pen. The 4 pairs of twisted-pair cables shall be put through the spare line according to the proportion of 3%, the spare line shall be placed in the trunk trunk, and at least one spare line shall be placed on each layer.
After threading is complete, all 4-pair cables should be fully tested for continuity. Test method: Strip all the core wires of the cable at both ends to expose the copper core. At one end, turn the digital multimeter to the on-off test gear, and the two test pens are stably connected to a pair of cable cores; at the other end, briefly touch the pair of cable cores. If you can hear intermittent sound on the watch end, it is OK. The 4 pairs of core wires of each cable are tested. The problems that this test can find are broken wires, short circuits and label errors.
Guarantee measures for construction quality
- To make detailed drawings in the design stage, drawings are very important. Don’t think it’s very simple, a good integrated wiring design drawing can save your wiring time and some on-site problems encountered in the wiring process, because there are not only weak electricity in the building, but also strong electricity, fire protection, air conditioning and so on.
- During the construction process, a construction plan should be prepared to cope with constant changes. Because sometimes the plan can’t keep up with the changes.
- It is necessary to keep abreast of the progress of other parts of the entire project in order to adjust the construction plan in time.
- Strict construction. Lines should be neat and clear.
- Make a good label, otherwise it will be miserable in the back.
