T/GDWCA 0022-2018 Security video coaxial cable general specification

Scope

Scope: This standard specifies the terms, definitions, and abbreviations, classification and marking, technical requirements, marking, manufacturing length, test methods, inspection rules, packaging, transportation, and storage of security video coaxial cables. This standard applies to security video coaxial cables used in intrusion alarm systems, video surveillance systems, access control systems, residential intercom systems, electronic patrol systems, parking lot (garage) safety management systems, and other security prevention systems composed or integrated by these systems. Main technical content: I. General requirements: 1. The inner conductors of solid and semi-foamed video coaxial cables shall comply with the requirements for copper conductors in GB/T 3953. The single wires in the conductors may be tin-plated, and the tin-plated copper wires shall comply with the requirements in GB/T 4910. 2. The inner conductors of physically foamed video coaxial cables shall be a single round copper wire that meets the requirements for copper conductors in GB/T 3953. 3. Polyethylene insulation materials that meet the requirements of YD/T 760 shall be used, but the dielectric loss tangent tanδ shall be ≤2.5×10-4. 4. The insulation shall be tightly and concentrically extruded around the inner conductors, and the insulation eccentricity shall not exceed 10%. II. Special performance requirements: 1. One of the halogen-free low-smoke flame-retardant polyolefin materials WDZR-J or WDZR-H shall be used. 2. The low-temperature test is divided into two grades, A and B. The test temperature for Grade A is -50℃, and the test temperature for Grade B is -30℃. After the test, the cable shall still comply with the relevant requirements after low-temperature winding, low-temperature tensile, and low-temperature impact tests.

Development Information

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