Is there a corresponding national standard for the classification of wires and cables?

1. Irradiation cross-linked power cable, voltage level: Standard: GB.

The irradiation cross-linked cable uses high-energy rays to bombard the hydrogen atoms in the poly molecular chain and discharge, so that there are voids in the molecular chain to form a network of macromolecular three-dimensional structures and constitute cross-linked polyethylene. 2. Medium voltage XLPE insulated power cable, voltage level: 6 6kv-26 35kv; Executive Standards:

gb/。The medium-voltage cross-linked polyethylene cable adopts the all-dry chemical cross-linking method, which greatly improves its mechanical properties, thermal aging performance and environmental stress capacity. 3. High-voltage XLPE insulated power cable, voltage level:

64 110kV, executive standard: GB T 11017;127 220kV, 290 cable has excellent gas performance, dielectric loss is smaller than paper insulation and PVC insulation, and the capacitance of XLPE cable is also small. 4. Control cable, implementation standard:

gb9330-88；Voltage level: 450 750V. The product uses polyvinyl chloride or irradiated cross-linked polyethylene as the insulating layer, which has excellent electrical conductivity, mechanical properties and chemical stability, and is suitable for the control of rated voltage and below, and the protection circuit for monitoring loops and other protection occasions.

5. Computer cable, voltage level: enterprise standard. This product is used for shielded cables for computers, testing instruments, and control system instruments with AC rated voltage of 300 500 and below, and for high anti-interference performance requirements, and is used for analog data transmission with high anti-interference.

1. The appearance is standard, the wire must have a certification mark, manufacturer, wire diameter, etc., and the ground wire must be insulated with a yellow-green layer.

2. Mechanical strength.

3. The insulation (generally greater than 100m) and voltage strength of the sheath (1500V below 500V).

4. Line resistance (no greater than a certain resistance under a certain wire diameter, conductivity and length) 5. Under the high temperature impact of 150 degrees, the wire shall not crack at a low temperature of -30 degrees.

1. Appearance standard.

It is required that there must be a certification mark, manufacturer, wire diameter and other model specification data on the wire, red for the live wire, blue for the neutral wire, and yellow-green insulation for the ground wire.

2. Look at the mechanical strength.

Qualified copper core wire copper core should be purple red, shiny, soft to the touch, good mechanical strength, toughness, repeated bending will not break.

3. Insulation of the sheath.

The resistance is generally required to be greater than 100m, and the withstand voltage strength should be guaranteed (below 500V and 1500V) not to be broken down.

4. Line resistance. A certain wire diameter, conductivity, and length are not greater than a certain resistance.

5. High and low temperature resistance.

Under the high temperature impact of 150 degrees, the wire shall not crack at the low temperature of -30 degrees.

The national standard is a guarantee that the wire is not a standard qualified product. On this basis, there are higher standards, such as the American CMP standard and the enterprise standard CQC. At present, the only wires that can reach the level of advanced countries are Jingde Special Plastic Fluoroplastic Wires.

Literally, the cable dishes produced in strict accordance with the national standard are considered national standard cables, which can only be higher than the standard, and are not allowed to be lower than the standard.

The so-called national standards for wires and cables actually refer to some requirements made by relevant national departments for the construction of wires and cables, and these requirements are the result of countless experiences and amendments. So, what are the country's requirements for cable engineering?

In fact, the country's requirements for cables or wires are divided in great detail, including wire selection, installation, wiring, service life and other requirements. Moreover, the standards are different in different construction environments and different regions. In other words, the national standard for cables is not only specific, but also has a very strong regional lead.

In addition, in order to facilitate the cable industry and users in various industries to query the relevant cable standards as soon as possible, the National Wire and Cable Standardization Technical Committee has also jointly published the book "Wire and Cable Standards Compilation" in conjunction with relevant institutions. This book can basically meet everyone's query and application needs for cable standards.

The content of the compilation of national standards for wires and cables is mainly divided according to the specialty, including 9 parts, namely general test method volume, cable and optical cable combustion test method volume, general foundation and component volume, bare wire coil, winding wire coil, marine cable coil, installed early blind spare wire and cable coil, power cable and accessory volume, communication cable, optical cable and accessory volume.

Cables and wires can be seen everywhere in today's life, wires and cables are indispensable and important supporting products in electrical, electric power and light industry industries, from ultra-high voltage transmission lines to household appliances, every link is inseparable from wires and cables. It has a wide variety, a large amount and a wide range, with thousands of domestic manufacturers, and many products are included in the product scope of the national electrical product safety certification. So what is the wire and cable standard?

The following is a brief introduction to wire and cable standards.

Wire and cable classification.

The model of the cable consists of eight parts:

1. Usage** The number of jujube type is marked as power cable, K is the control cable, and P is the signal cable;

2. Insulation** Z oil-impregnated paper, X rubber, V polyvinyl chloride, YJ cross-linked polyethylene.

3. Conductor material** is not marked as copper, l is aluminum;

Fourth, the inner sheath ** Q lead package, L aluminum package, H rubber sheath, V polyvinyl chloride sheath.

Fifth, derivation** d does not drip flow, p dry insulation;

Sixth, the outer sheath **.

7. Special products** TH wet tropical, TA dry tropical;

8. The rated voltage unit kv is related to the rental section of the cable model.

Wire and cable standards.

At present, the application of wire and cable standards in contemporary times can be said to be more and more extensive, wire and cable standards are worthy of our good study, now we have an in-depth understanding of wire and cable standards, I hope this article can have a greater reference value for readers.

With the progress of technology and the increase of social demand, China has formulated and revised a large number of national standards for wires and cables in recent years. In order to better meet the needs of readers in the production, application, inspection and other aspects of wire and cable products for wire and cable national standards, the National Wire and Cable Standardization Technical Committee organized this compilation again, which collected the national standards for wire and cable issued by the end of 2008, which are divided into the following 9 volumes according to the specialty:

Compilation of National Standards for Wire and Cable: General Test Method Volume, "Compilation of National Standards for Wire and Cable, Combustion Test Method Volume for Cables and Optical Cables", "Compilation of National Standards for Wire and Cable, General Foundation and Component Volume", "Compilation of National Standards for Wire and Cable", "Compilation of National Standards for Wire and Cable", "Compilation of National Standards for Wire and Cable", "Compilation of National Standards for Wire and Cable", "Compilation of National Standards for Wire and Cable", "Compilation of National Standards for Wires and Cables, Compilation of Wire and Cable Volumes, Volumes of Wire and Cable Accessories", "Compilation of National Standards for Wires and Cables, Volumes of Power Cables and Accessories", "Compilation of National Standards for Wires and Cables", "Compilation of National Standards for Wires and Cables, Volumes of Power Cables and Accessories", "Compilation of National Standards for Wires and Cables", "Compilation of National Standards for Wires and Cables, Volumes of Power Cables and Accessories", "Compilation of National Standards for T Compilation of national standards for wires and cables, communication cables, optical cables and accessories This volume is a volume of power cables and accessories, and a total of 26 relevant national standards are collected. Readers are reminded that the income standards were published in different years, and no changes have been made to the inconsistencies in the quantities and units and the inconsistencies in the format of the standards.