The country has national laws, the family has family rules, no rules, not a square. Various industries have their own standard system, wire and cable as the national electricity infrastructure, the development of strict and effective standards, not only to ensure the safety of people’s electricity, more standardized enterprise production, to promote the healthy development of the industry. In recent years, the country is paying more and more attention to the importance of standards.
National standards not only regulate the technical parameters of wire and cable production, but also its acceptance testing, quality supervision and other aspects to make a number of clear provisions to ensure that the technical performance, service life, safety and other aspects of the relevant products to meet certain requirements.
The following is an introduction to several important standards in the field of wire and cable:
1, GB/T 5023-2008 “Rated voltage 450/750V and below PVC insulated cables
Standard for rated voltage 450/750V and below PVC insulated cables, from the type, structure, technical requirements and test methods and other aspects of the content, the following seven parts of the provisions:
General requirements
Test methods
Unsheathed cables for fixed wiring
Sheathed cables for fixed wiring
Flexible cables (cords)
Cables for lift cables and flexible connections
Two-core or multi-core shielded and unshielded flexible cables
2, GB/T 8734-2016 “Rated voltage 450/750V and below polyvinyl chloride insulated cable wire and flexible wire
Standard for rated voltage 450/750V and below PVC insulated cable wire and flexible wire of various types, specifications, technical requirements, and test methods, the scope of application to make clear provisions:
General provisions
Cable and wire for fixed wiring
Flexible wires and cables for connection
Wires for installation
Shielded wires
Elevator cables
3, GB/T 19666-2019 “Flame retardant and fire resistant wire and cable or optical fibre cable general rules
The standard specifies the flame-retardant and fire-resistant wire and cable or optical fiber cable burning characteristics code, technical requirements, test methods and acceptance rules, including halogen-free, low smoke, low toxicity, flame retardant and fire-resistant burning characteristics.
The standard applies to halogen, halogen-free, low smoke, low toxicity of flame retardant and fire-resistant wire and cable or fiber optic cable products.
4, GB/T 10491-2022 “rated voltage 450/750V and below cross-linked polyolefin insulated wire and cable
The standard specifies the product structure, test and technical requirements, delivery length, inspection and acceptance rules as well as marking and packaging of wires and cables.
The standard applies to the manufacture of cross-linked polyolefin insulated wires and cables with copper conductors for fixed wiring connections and electrical and electronic equipment connections with rated voltages of 450/750V and below.
5, GB/T12706.1-2020 “Rated voltage 1kV (Um=1.2kV) to 3kV (Um=3.6kV) cable
The standard specifies the structure, dimensions and test requirements for power cables with extruded insulation of rated voltage 1kV (Um=1.2kV) and 3kV (Um=3.6kV).
The standard applies to extruded insulated power cables for fixed installations at rated voltages of 1kV (Um=1.2kV) and 3kV (Um=3.6kV) in distribution networks or industrial installations.
Not applicable to cables for special installation and operating conditions, such as overhead lines, mining industry, nuclear power plants (in and around containment) and cables for underwater or propagation.
6, GB/T 9330-2020 “Plastic Insulated Control Cables
The standard specifies the AC rated voltage U0/U for 450/750V extruded PVC and cross-linked PVC insulation, PVC, PVC and halogen-free PVC hydrocarbon sheathed control cables product code and marking methods, cable name and type specification, finished cable marking and insulation core identification, technical requirements, test methods and testing rules, use characteristics and packaging.
The standard applies to the AC rated voltage U0/U for 450/750V and the following control, monitoring circuit and protection lines and other occasions fixed laying control cable.
7, GB / T 3048 “wire and cable electrical performance test methods
The standard specifies the general requirements of the electrical properties of wire and cable testing, definitions and test equipment for periodic calibration requirements.
The standard applies to a variety of power cables and electrical equipment with wire and cable electrical performance test.
Conclusion
Wire and cable is an essential and important supporting product for electricians, electric power and light industry, from ultra-high voltage transmission lines to household electrical products, each link is inseparable from wire and cable. It has a wide range of products, a large volume and thousands of domestic manufacturers, many of which are included in the range of products certified as national electrical product safety.
China is now considered a new world power in the field of standardization, the development of a hundred industries for the big, the standard is for the foundation. The standard is the cable enterprise independent innovation, leapfrog development of the magic weapon, is the national scientific development, social harmony and protection. In the final analysis, the cable enterprises in the economic development, must pay attention to the standard, comply with the standard.
