We all know that copper and aluminum are the main materials of wire and cable, so who knows what advantages copper cable and aluminum cable have? 1.Low resistivity: the resistivity of copper-core cable is 1.68 times lower than that of aluminum-core cable, with less energy consumption. 2.Good ductility: the extension rate of copper for electrical … Read more
Wire and cable in the process of operation, due to the existence of resistance will be heated.The resistance of the wire is generally very small, and its heating power can be expressed by the formula Q =I^2R.Q =I^2R indicates that: for a section of wire in use (R has been basically constant), the greater the … Read more
In today’s wire and cable market, product quality levels are uneven, and production companies are mixed. Many Party A simply uses price as the procurement standard, which breeds a market for substandard products. So that when users are faced with different prices of “national standard cables”, they will be at a loss, not knowing how … Read more
As the main carrier of power transmission,Aerial Bundled Cable HD 626 S1 Standard is widely used in electrical equipment, lighting circuits, household appliances, etc. Its quality directly affects the quality of the project and the safety of consumers’ lives and properties. There are many types of wires in the market, and you must use the … Read more
The operation of power cable lines is extremely important in the entire power production process. Because the safety of cable lines is directly related to the production safety of enterprises and the safety of people’s lives and properties, it is extremely important to understand the operation and maintenance of power cables and lines. Things. In … Read more
The alarm system based on the professional bus form is currently the most widely used, and the aerial bundled cable SANS 1418 is also the most complicated, so I will focus on the discussion here. RVV2*0.3 (signal cable) and RVV4*0.3 (2-core signal + 2-core power supply) cables are generally used between the front-end detector and the alarm … Read more
The Aerial Bundled Cable series products are composed of pressed copper, aluminum (aluminum alloy) conductors, inner shielding layer, weather-resistant insulating material and outer shielding layer. They have both the power transmission characteristics of power cables and the strong mechanical properties of overhead cables. Compared with bare wires, this product has the advantages of small laying … Read more
1. The main features of overhead insulated conductors (ABC cables) have good insulation performance. Overhead insulated conductors have an extra layer of insulation and have superior insulation performance than bare conductors, which can reduce the distance between lines, reduce the insulation requirements for line supports, and increase the number of circuits erected on the same … Read more
(1 )Overview Low-voltage cables have many specifications and models. Take indoor PVC insulated PVC sheath below 1KV as an example to illustrate the production of power cable terminal cable heads. (2) Construction process Measure the grounding resistance → strip the cable end → wrap the cable and sheath the terminal end of the aerial bundled … Read more
1. The basic requirements of high voltage cable head The cable terminal is the component that connects the aerial bundled cable(abc) with other electrical equipment. The cable middle is the component that connects the two cables. The cable terminal and the middle are collectively called cable accessories. The cable accessory should be able to operate … Read more