What is the insulation resistance of a single-mode 12-core optical cable?

　　The insulation resistance of single-mode 12-core optical cable is a key parameter, which directly affects the electrical performance and safety of the optical cable line. Generally speaking, the insulation resistance of optical cable laying is not less than 2000MΩ/km (test voltage 500V, DC). This standard ensures the good insulation performance of the optical cable line, prevents current leakage and external interference, thus ensuring the stability and security of communication.

　　During the production and laying of fiber optic cables, various measures are taken to ensure that the insulation performance of the cable meets the specified standards. For example, the cable jacket will be made of materials with good insulation properties, and strict quality control and testing will be carried out during the production process. In addition, during the laying of fiber optic cables, care will be taken to avoid damage or moisture to the cable, so as not to affect its insulation performance.

　　It should be noted that the insulation resistance may vary depending on factors such as the use environment, laying method, and aging degree of the optical cable. Therefore, in practical applications, it is necessary to regularly conduct insulation resistance tests on the optical cable to detect and solve potential problems in a timely manner.

　　In summary, the insulation resistance of a single-mode 12-core cable should not be less than 2000MΩ/km (test voltage 500V, DC) to ensure the electrical performance and safety of the cable line.