More knowledge of cable standards 10

Legal Analysis: Cable Square and Diameter Conversion MethodKnowledge There are three standards commonly used in the world for wire specifications: American (AWG), Imperial (SWG) and ours (CWG).

A few square is a nominal value specified in the national standard, and a few square is the user who selects the cable according to the load of the cable. The square number of cables is a colloquial term in the construction of decoration and hydropower, and the few square cables often said are not added to the unit, that is, the square millimeter. Generally speaking, the empirical carrying capacity is about 1,000 watts per square cable when the grid voltage is 220V.

Each square of copper wire can carry kilowatts, and each square of aluminum wire can carry kilowatts. Therefore, an appliance with a power of 1 kilowatt is sufficient with only - square copper wire.

Legal basis: The National Standard of the People's Republic of China: Radio Frequency Cable is proposed by the Ministry of Electronics Industry of the People's Republic of China. This standard is under the control of the National Technical Committee for the Standardization of High-frequency Cables and Connectors for Electronic Equipment.

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.

Legal analysis: "Compilation of National Standards for Wire and Cable: Burning Test Method for Cables and Optical Cables", "Compilation of National Standards for Wires and Cables: General Foundations and Component Volumes", "Compilation of National Standards for Wires and Cables, Bare Wire Coils", "Compilation of National Standards for Wires and Cables, Winding Coils", "Compilation of National Standards for Wires and Cables, Marine Cable Rolls", "Compilation of National Standards for Wires and Cables, Wire and Cable Coils for Equipment", "Compilation of National Standards for Wires and Cables, Power Cables and Accessories", "Compilation of National Standards for Wires and Cables, Communication Cables, Optical Cables and Accessories"

Legal basis: "Wire and Cable Standards Compilation 2018: General Test Methods Volume" Chapter 1 GB T3048 12007 Wire and Cable Electrical Performance Test Methods Chapter 2 GB T3048 2-2007 Wire and Cable Electrical Performance Test Methods Part 2:

Resistivity Test of Metal Materials Chapter 3 GB T3048 3-2007 Test Methods for Electrical Properties of Wires and Cables Part 3: Volume Resistivity Test of Semi-Conductive Rubber and Plastic Materials Chapter 4 GB T3048 4-2007 Test Methods for Electrical Properties of Wires and Cables Part 4: Conductor DC Resistance Test Chapter 5 GB T3048 5-2007 Test Methods for Electrical Properties of Wires and Cables Part 5:

Insulation resistance test.