Views: 132 Author: Site Editor Publish Time: 2020-07-12 Origin: Site
The cross connecting cabinet of fiber optic cables is a kind of connecting equipment that provides optical fiber cable termination and jumper connection for the fiber optical cables in the main layer and the distribution layer. When the fiber optical cable is introduced into the cross connecting box, after fixing, terminating, and fiber distribution, the fiber optic cable is connected on the main layer by using the fiber jumper.
The cross connecting cabinet of fiber optic cables is a connection device installed outdoors, and the most fundamental requirement for it is to be able to withstand the drastic climate and harsh working environment. It must have the characteristics of anti-condensation of water vapor, waterproof and dust-proof, anti-insect and anti-rodent, and strong resistance to impact damage. It must be able to withstand the harsher external environment. The inner side has very high requirements for temperature and humidity control. According to international standards, the highest standard for these projects is IP66. But there are not many enclosures that can meet this standard. The main domestic cross connecting cabinets are: original German KRONE cabinets, which are made of unsaturated polyester glass fiber reinforced materials (SMC), and have good performance in waterproof, anti-moisture, and strong resistance to impact damage. Of course, when the external environment of the installation location of the cross connecting cabinet is better, it is also acceptable to reduce the performance requirements and reduce the investment.
1) The movable fiber optical connector should meet the requirements of "insertion loss" and "return loss" specified in the relevant standards of the selected type.
2) The voltage level between the high-voltage protective grounding device and the metal work-piece of the cabinet should not be less than 3000V DC.
3) The insulation resistance between the high-voltage protective grounding device and the metal work piece of the cabinet is not less than 2´104MW under the test voltage of 500V DC.
The capacity of the cross connecting cabinet of fiber optic cables refers to the maximum number of fiber cores that the cross connecting cabinet can form. The capacity is proportional to the volume of the cabinet, the overall cost, and the difficulty of construction and maintenance, so it should not be too large. In actual design and engineering, people seem to only require the larger the capacity, the better, but the possible consequences are: the volume of the box increases and the price of the equipment increases.
The cross connecting cabinet of fiber optic cables is a kind of interface equipment mainly used at the junction of the main optical cable and the distribution optical cable in the optical cable access network. The structure of the cross connecting cabinet is mainly composed of the cabinet body, the internal gold work-piece, the fiber optical movable connector and the spare parts. According to different occasions, it can be divided into indoor type and outdoor type, and can be installed on the floor, overhead and wall. The external dimensions of the cross connecting cabinet of the outdoor fiber optical cable should not exceed 1 600 mmX1 100 mmX400 mm (height X width X depth).
