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What are the precautions for using the cable mesh and how to use it?
No instructions are clearly stated or allowed. In the "Code for Design of Electric Power Cables" (GB-2007), the provisions of 5.1.3 stipulate that if the number of cables in the same channel is large, if the laying of the multi-layer bracket on the same side, the following provisions shall be met: High to low power cables, strong to weak control and signal cables, communication cables "top to bottom" in the order. When the horizontal channel contains more than 35kV high-voltage cable, or to meet the introduction of the cabinet tray to meet the requirements of the bend radius requirements, should be "bottom-up" in order. In the same project or the cable channel extends to different projects, should be arranged in the same order. 2 bracket space by the channel space constraints, 35kV and below the adjacent voltage level power cables can be arranged in the same layer of support, 1kV and below the power cable can also be with the strong control and signal cable configuration in the same layer of the bracket. 3 The work of the same important circuit and the backup cable should be arranged on the different layers of the brackets. It is possible to note that it is restricted by passage space from section 2. If you really want to lay together, it should be noted that 10kV cable can not use single-core cable, you need to use three-core cable.
I would like to ask the next communication project in the cable tie is what the situation to use, how to calculate it?
This need to see what you said the bend of the pipe elbow is what kind of if it is ninety degrees elbow, it is too much trouble, you can use wire lead
What is the name of this plastic buckle? Since the US military used to replace handcuffs, it must be very strong, what is the plastic? More
Is the nylon cable ties, but the quality of good points
Five ridge hoarding locusts on the high-chu chu chu chu floor layer. Two elevators tied side by side, to cloth video cable, how cloth ah? The The Online to say with the network cable, there is a direct use of coaxial video! I would like to ask how to use coaxial video cable cloth? The Will there be a reserved interface on the car? Or need to take electric drill to play the outer hole, the video line into the box to go inside? The High phone, detailed words ah! The The Thank you! The More
With real estate license, household ID card, you can come to the cable TV business hall to go directly
How to properly remove air conditioning in the absence of electricity
Install the rack panel, the front should be left 1.5m space, the back of the rack from the wall should be greater than 0.8m, to integrated wiring system engineering system debugging, including cable, information outlet and wiring module testing. The tests should be
I see someone else with a cable tie each layer, but the elevator movement, is the video line and cable inside the elevator Danzao grass grams of the long ball of cattle factory magic do not move it, for detailed wiring instructions, the best map, , Kneel thanks! The best copy of the map, little brother is not much, all to the table to mind more
Very simple, the video line you attached to the accompanying cable on the OK, but the video cable is not as soft as the cable, easy to break. Good and simple way is to use wireless technology, no attachment.
I got the machine, and then removed, there is a section of the tube was bent, and that position really need to fold before, because there is a turn, but now that place too hard, and completely unreasonable that he is normal Of the time, because the demolition of a little time will be folded, do not know that they may be deliberately? And then to add money, encounter this situation usually how to do more
Single-core cable line grounding line commonly used grounding 1. shield one end directly grounded, the other end through the protective layer to protect the ground: When the line length of 500 --- 700m and below, the shield can be used directly to one end of the ground (cable terminal Position ground), the other end through the protective cover to ground. 2. shield the midpoint of the ground: When the line length of 1000 ---- 1400m, the use of midpoint grounding. in the middle of the line position, the shield directly grounded, the cable ends of the shield through the protective cover to ground. The middle ground is usually required to install a straight connector. Install an insulated connector at the midpoint of the line. The insulated connector disconnects the cable shield, and the shield is grounded through the protective cover, and the two cables are shielded and grounded directly. 3. Shielded cross-connect cable lines are very long (1000 --- 1400m above), you can use shield cross-connect. This method is divided into three equal parts of the length of the three or three times the number of segments, each section between the installation of insulation joints, insulation joints between the three-phase shield with a coaxial cable, cross-linked box for transposition, cross The interconnection box is provided with a set of protective protector, and the two sets of insulated connectors are arranged on the line.
I would like to ask you friends, merchandise residential house inside the cable how to arrange, I saw in the weak box has a fiber optic cable home, that is, I do not know how to lay, I do not understand, I think you look, if the light cat and router can Placed in the weak box, the router from the router to the network assigned to each room, if the routing into the weak box will not be wireless signal attenuation, the younger brother is a novice, do not understand, please heroes branch try to jealousy Spring but Shanghai move, very grateful, no wealth value, I am sorry. More
Do the map, you can, the key is the price is not good, the selected accessories are not very good, it is recommended to take several