There are three main types of cable and wire:

1, national standard cable: according to the relevant cable standards issued by the state of the technology produced by the cable referred to as the international line. 2, line label cable: according to industry standards, there are mainly fewer corners, but it does not affect the use of performance. 3, non-standard cable: In order to meet the needs of the market came into being products, uneven quality. There are more and more types of wire and cable sold by various businesses. National standard wire and cable is a wire produced in full accordance with the national standard. General household, common wires are standard specifications of performance, the national standard specifies the common 5 specifications of performance, as follows.

Key metrics:

1. Appearance standard, the wire must have certification mark, manufacturer, wire diameter, etc., ground wire with yellow green insulation layer;

2. Mechanical strength;

3. Insulation of the sheath (generally greater than 100MΩ) and compressive strength (500V below 1500V);

4. Wire resistance (a certain wire diameter, conductivity, length is not greater than a certain resistance);

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

Electrical performance testing of cables

The main conductor DC resistance, insulation resistance, finished voltage test and voltage test between insulated wire cores, each is very important, conductor resistance directly reflects the electrical transmission performance of the cable, directly affects the temperature, life, voltage drop, and operation safety of the cable in energized operation, it mainly examines the material and cross-sectional area of the conductor, if the material of the conductor is not good or the cross-sectional area is seriously insufficient. This kind of cable laid in the line will increase the loss when the current passes through the line, causing the cable conductor itself to heat, causing the insulation aging and cracking of the covered conductor, resulting in power supply line leakage, short circuit, and even cause fire, endangering the safety of people and property. The standard has strict provisions on the conductor direct current resistance of different specifications of cables, which shall not be greater than the value specified in the standard.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable. Hotline: 16678668098