The selection of cable sheath should meet the following requirements: 1 For AC system single-core power cables, when it is necessary to increase the resistance of the cable to external forces, non-magnetic metal armor layers should be used, and steel armor without non-magnetic effect treatment should not be used. 2 For cables in humid, chemically … Read more
The choice of cable insulation type should meet the following requirements: 1 Under the operating voltage, operating current and its characteristics and environmental conditions, the cable insulation characteristics should not be less than the conventional expected service life. 2 The selection should be based on factors such as operational reliability, ease of construction and maintenance, … Read more
The processing and production of bare conductor are carried out in accordance with the national standards. The latest domestic standard is: GB/T1179-2008. The relevant national standards used before are no longer used. Since the previous standards are relatively simple and clear, refer to It is very convenient to use. Except for the change in the … Read more
Immediately in the immediate future of electrical and industrial production Noble gas cross-linking, melting gas cross-linking, cross-linking cross-linking, domestic leveling type 2 instant-drying chemical cross-linking; class 2 cross-linking chemical cross-linking; class 3 cross-linking cross-linking. Type 1 chemical cross-linking, cross-linking cross-linking function mother particle application method Immediately, cross-linking power matrix particles for cross-linking, existing ordinary cross-linking … Read more
The cross-linked polyethylene cable material (XLPE) can make the aggregate structure of the insulating material in a reasonable state through the cross-linking process, and can increase the long-term working temperature of the power cable to 90 ℃, and the instantaneous short-circuit temperature is 170 ℃ ~ 250 ℃. The performance remains unchanged while other performances … Read more
Power cables are cables used to transmit or distribute high-power electrical energy in power systems. With the great development of the petrochemical industry worldwide, medium and low voltage extruded insulated power cables have become an important variety of wires and cables due to their simple structure, convenient manufacturing and processing, and convenient construction and maintenance. … Read more
Scope of application When the PVC insulation cable and sheath layer of the wire and cable have local defects, they are allowed to be repaired, such as broken glue, collapsed pits, disconnections, wrinkles, bumps, ears, edges, breakdown, joints, etc. Materials and equipment used: The raw materials use plastic strips, skins, blocks and tubes of the … Read more
Cables are divided into different inner conductors. There are two main types, one is pure copper material and the other is copper clad aluminum material. The English name of copper-clad aluminum is Copper Clad Aluminum, so copper-clad aluminum conductors are also often called: CCA conductors. Copper-clad aluminum composite wire was first introduced by Germany in … Read more
High voltage cable is a kind of power cable, which is used to transmit power cable between 10kV and 35kV (1kV = 1000V). It is mainly used in the main road of power transmission. The main types of high voltage cables are YJV cable, VV cable, yjlv cable and VLV cable. YJV cable full name: … Read more
1 The difference in principle Fire-resistant cables have different principles from flame-retardant cables. The flame-retardant principle of halogen-containing cable is based on the flame-retardant effect of halogen, and the flame-retardant principle of halogen-free cable is to reduce the temperature of the water to extinguish the fire. Fire-resistant cables rely on the fire-resistant and heat-resistant characteristics … Read more