Although aluminum has good corrosion resistance in the atmosphere, the atmospheric temperature, salinity and other impurities have a great impact on it. For example, the corrosion rate is 0.0011 mm / year in rural areas, 0.11 mm / year at sea and 0.08 mm / year in industrial areas. In neutral aqueous solutions such as … Read more
Aluminum plate refers to the rectangular aluminum plate sheet made of pure aluminum or aluminum alloy through pressure processing (shearing or sawing) to obtain rectangular cross section and uniform thickness Internationally, it is customary to call aluminum materials with thickness of more than 0.2mm, less than 500mm, width of more than 200mm and length of … Read more
At present, power cable industry is used to refer to cables with certain fire resistance properties such as Fire Retardant, Low Smoke Halogen Free (LSOH) or Low Smoke Fume (LSF), etc., collectively referred to as fire resistant cables. Fire retardant cable The characteristic of fire retardant cable is to delay the spread of flame along the … Read more
Whether it is home improvement needs wires or large quantities of overhead cables for engineering, everyone has such a doubt during the inquiry process when purchasing wires and cables. The prices of products of the same model and specifications sometimes vary a lot, as the saying goes Distribution of goods, this principle is applicable to … Read more
1. Greasy dirt on the wire surface Overhead ACSR cables used for overhead transmission lines are often questioned by customers or even returned due to surface quality problems. This phenomenon is mainly caused in the drawing process. The main reasons are as follows: (1) The size of the finished wire drawing die is too large, … Read more
PVC cable material is made of polyvinyl chloride as the basic resin, adding stabilizers, lubricants and inorganic fillers, etc., through mixing, kneading and extrusion. Although its dielectric point performance is general and not environmentally friendly, its price is low and the process is simple; PVC cable material is still one of the most used cable … Read more
Is power cable’s fireproof effect poor? Have you tried mineral insulated fireproof cables! Mineral insulated fireproof cables not only have the characteristics of fireproof, high temperature resistance and corrosion resistance, but also good waterproof effect, light weight and long life. (1) In order to prevent electrical fires caused by the quality of the wires and … Read more
1. Common faults of empty overhead cable lines 1. Overhead line failure ①Short circuit and damage of wires. The reasons that cause short circuit and damage to the wire are: a. The distance between the wires and wires is small, and the flatness of the three-phase wires is different. It is very easy to cause … Read more
1. Fire-resistant cable On the basis of improving the manufacturing process of the refractory layer and adding the refractory layer, the Class A refractory cable has been developed. It can withstand combustion for at least 90 minutes in a flame at 950℃～1000℃ and at a rated voltage without the cable being broken down ( That … Read more
1. Shielded cable technical characteristics With the increase in the capacity of the power system and the continuous improvement of the level of automation, the secondary equipment of the power system has now widely used integrated circuit or micro-type protection devices. The application of these protection devices is very useful to improve the stable operation … Read more