The best choice of T-joint of the hottest distribu

The best choice of T-joint of distribution trunk line - insulation puncture clamp in sICAM, France

Abstract: the distribution trunk lines of high-rise residential buildings mainly include: plug-in bus duct, pre branch cable and ordinary power cable. Determine the form of distribution trunk line according to the nature of the building, power load capacity, installation environment, etc

key words: therefore, the distribution trunk T-joint, French sICAM insulation puncture clamp Untitled Document Distribution trunk the distribution trunk of high-rise residential buildings mainly includes: plug-in bus duct, pre branch cable, ordinary power cable. Determine the form of distribution trunk line according to the nature of the building, power load capacity, installation environment, etc

1. the plug-in bus duct is mainly used in large load distribution lines, and its maximum rated current can reach 5000A, which is divided into dense insulation type and air insulation type. Generally, the bus duct installed in the electrical shaft of high-rise buildings has a plug-in joint on each floor. After leaving the factory, the bus duct is transported to the construction site in sections for installation and connection with bolts, and moderate joint torque should be ensured. The technical requirements for installation workers are high, In addition, the bus duct is poor in waterproof, corrosion resistance, earthquake resistance, displacement resistance and other aspects

2. Pre branch cable

is mainly used in distribution lines with medium and small loads. At present, its maximum current carrying capacity is 1600A. Compared with bus duct, it has light weight, small outer diameter, relatively convenient installation and construction, good waterproof, corrosion resistance and seismic resistance, low environmental requirements, but high price. It should be measured according to the actual size of the building electrical shaft (shaft height, floor height, branch head position on each floor, etc.) before ordering, The factory will then customize it according to the actual size. In order to avoid the change of capacity caused by the change of floor function, it is advisable to enlarge the cross-section of the trunk line and branch line of the pre contention cable by one level. In special cases, branch lines should also be reserved for standby

3. Ordinary power cable

this is the most traditional form of power distribution trunk, which is mainly divided into two types: sharing the single vehicle market situation is 10 points, one of which is to use T-junction box for tapping, which is connected out by the trunk cable T. 4) multiple force sensors and multiple deformation sensor branch lines can be configured for layered power distribution. This method is complex and difficult to construct, with poor reliability, and fault points are easy to form at the branch joints. Secondly, the French sICAM insulation puncture clamp is used to tap the trunk cable, and the cable branch can be made without stripping the insulation skin of the cable. The joint is completely insulated, and the branch can be made at any position of the cable at the construction site. The joint is durable and twisted, shockproof, waterproof, corrosion-resistant, aging, simple and reliable installation, live installation, and no terminal box and junction box are required. The cost performance is better than the pre branched cable