What do the production standards for Class 6 shielded network cables need to meet?

　　The production standards of the six types of shielded network cables involve many aspects, mainly including national standards and international standards. The following is a detailed interpretation of the production standards of the six types of shielded network cables:

　　I. National Standards

　　In China, the main national standard for six types of shielded network cables is GB/T 30512-2014 communication cable Part 7: Shielding two strands of twisted pair ". This standard makes detailed provisions on the technical specifications, use and maintenance of products, including:

　　Product classification: The standard classifies products into three categories: CM, CMR, and CMX, with detailed requirements for the usage scenarios and installation environments of each type of product.

　　Product material: Specifies the materials used for the product, including conductors, shielding layers (such as aluminum foil shielding), insulating layers, and sheaths. For flame retardant properties, the sheath material is usually required to have flame retardant properties, such as compliance with IEC 60332-1 or similar flame retardant standards.

　　Electrical performance indicators: including DC resistance, capacitance, AC resistance, attenuation, crosstalk and other parameters and measurement methods. These indicators are important parameters to measure the tranSMission performance of the six types of shielded network cables.

　　Physical performance indicators: such as distortion, tension, bending and other parameters of the provisions and measurement methods. These indicators reflect the physical and mechanical properties of the cable to ensure that it has sufficient stability and durability during use.

　　Construction and installation: Specify the wiring and installation requirements of the product, including details such as screwing, sheathing, and joints, to ensure the flame retardancy and overall performance of the product.

　　Ii. international standards

　　Internationally, the six types of shielded network cables may also need to comply with relevant international standards, such as the ANSI/TIA/EIA-568 series of standards. These standards mainly focus on the design and installation of integrated cabling systems, which also include specific provisions for twisted pair:

　　ANSI/TIA/EIA-568-B: The standard is structured into three parts, of which the 568-B2 part focuses on balanced twisted pair cabling components, including component specifications, transmission performance, system model, and measurement procedures for user verification of telecommunications cabling systems. For the six types of shielded twisted pair, the standard may specify its transmission frequency, attenuation crosstalk ratio (ACR), insertion loss and other key performance indicators.

　　Flame retardancy: While the ANSI/TIA/EIA-568 standard is primarily concerned with the design and installation of cabling systems, flame retardancy is often specified separately in the manufacturing standards for cables. For example, the sheath material of a cable may need to comply with specific flame retardant test standards, such as UL94, etc. For Class 6 shielded network cables, its flame retardancy is one of the key indicators, which usually requires that the sheath material of the network cable can resist the spread of flames under specific conditions and reduce the risk of fire.

　　In summary, the production standards of the six types of shielded network cables involve many aspects, including national standards and international standards. These standards together ensure the quality of the six types of shielded network cables in terms of transmission performance, physical and mechanical properties, flame retardancy, construction and installation. When selecting and using such network cables, it should be ensured that the products meet the requirements of relevant standards to ensure their performance and quality.