NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Everything in the world has its own properties and levels. In addition, there are a wide variety of cable products and widely used. In particular, the laying of the cable is more professional.
Many friends have a curiosity in this regard, and Xiaobian will ask all things in the world today with their own properties and level. In addition, there are a wide variety of cable products and widely used. In particular, the laying of the cable is more professional.
Many friends have a curiosity in this regard. Xiaobian will ask the cable identifier manufacturers to give you a brief introduction to the related content of cable laying. First, the method of laying is shallow trough: the ground water level is high. The number of electric power cables in the channel is less, and there is no way to pass by the outdoor distribution equipment.
Second, the cable capacity control room, relay protection room, etc., should be set to the lower part of the cable clamping; the cable layer with a movable cover can also be used. Third, in the groundwater level, a place where chemical corrosive liquid spilled, the plant should be used in the factory. In the case of building, the factory is not suitable for underground laying, an overhead is available.
Fourth, the pipeline directly embedding underground. At present, most external cables of our project use direct buried lay, which should meet the following requirements: 2, the total length of the cable should cover the protective plates that are not less than 50mm on both sides of the cable, and the protective plate should be protected from concrete protection.
3, the cable identifier manufacturer believes that the city cable is buried, and it is necessary to set the eye-catching signage on the upper part of the protector. 4, in the outskirts or open space, along the straight interval of the cable path, the corner or joint, should erect the obvious orientation mark or the latch. 5. When wearing a trench with a cable, the thickness of the thickness of not less than 100 mm is not less than 50 mm along the top of the corrugated tube, and the width is not less than 50 mm, not less than the outer side of the tube 50 mm, and the cable can not be armored.
5. Directly buried in non-frozen soil, the depth of the cable should meet the following provisions: 1, cable outer skin to the foundation of the underground structure, shall not be less than 0.3 meters. 2, the cable surface to the ground depth, not less than 0.7 meters. 3. On the driving path or under the cultivated land, it should be properly deepened, but it shall not be less than 1 meter.
Sixth, directly buried in the frozen soil, should be buried below the frozen soil, if it is not buried, can be buried in a dry frozen soil layer or backfilling of drainage performance, and other antifreeze measures can also be used to prevent cable damage. Seven, the choice of the diameter of the protection tube and the number of cables should meet the following requirements: Wearing cables must not exceed 3, and must not exceed 3. 2, the diameter in the tube should not be less than 1.5 times the diameter of the cable, and should not be less than double the diameter of the cable.
The inner diameter of the pores of the drain pipe cannot be less than 75 mm. With regard to the problem of cable laying, we temporarily introduce here, will continue to ask the cable identifier manufacturers to introduce the knowledge in this area.
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