Cable, low temperature resistant cable, low temperature resistant cable laying requirements

I. What are the requirements for laying low temperature resistant cables? Low-temperature resistant cable is a special cable, in the laying time will not easily absorb moisture, is very stable. In the installation of the time when you do not need to connect in the middle of the place, this cable is very easy to change the shape, not because of the bending and breaking. 1. Buried depth should not be less than 0.7 meters, the cable buried above should be covered with about 10 centimeters of fine soil, and then covered with cement to protect the board, the width of the cable diameter should be beyond the cable on both sides of the each side of the 50 centimeters. 2. In the building laying, the cable skin and the building foundation of the distance between the cable and the foundation should not be less than 0.6 m. The cable should not be laid at any distance. should be less than 0.6m.3. When more than one low-temperature-resistant cable cross-laying, pay attention to the small net distance of 0.5m. Power cables and control cables between the smaller net distance between the 10kv below 0.1m, 10kv above 0.25; if it is used between different departments of the cable should be between each other for the 0.5m, if the cable is separated by a partition board, can be lowered to 0.1m.4. Underground laying, if the pipeline crosses, and heat pipes, and the heat pipe diameter on each side of 50cm. Pipeline cross, and heat pipes to keep the net distance is 2m, and combustible gas or liquid pipeline net distance for 1m, other pipeline net distance for 0.5m.5. low temperature cable if the city streets, highways or railroads should be through the pipe, the inner diameter of the pipe should not be less than 1.5 times the cable outer diameter, from the drainage ditch should not be less than 0.5m, from the depth of the city street pavement should not be less than 0.7m.6. direct buried cable in the introduction of tunnels, and the introduction of the tunnel, as well as the cable with a partition can be reduced to 0.1m. Buried cable in the introduction of tunnels, as well as other buildings, should be worn in the pipe, and in the mouth of the pipe to be blocked to prevent water seepage into the pipe, as for the mouth of the pipe blocking, you can use oil hemp, and then the mouth of the pipe poured with asphalt or cement blocked tightly.7. Cable if the ground in the underground lead out of the ground, in order to prevent mechanical damage to the ground above the 2-meter application of metal tubes or cover to be protected, and the root of its root should be extended into the ground for 0.1 meters.8. For underground For low-temperature-resistant cables laid side by side, the locations of their middle joint boxes should be staggered, and their net distance should not be less than 0.5 meters, so as to facilitate the construction of the joint parts, and the middle joint box should be protected by the protection box on the outside of the joint box.

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