Compared with traditional power cables, superconducting cables have the advantages of low loss, large transmission capacity, small ABC Cable volume and strong system security and stability. Cold insulated HTS cables have low mutual electromagnetic influence and thermal field influence, and have stable current carrying capacity. They have great development prospects in underground cable systems in … Read more
Fireproof cable has become an indispensable item in our daily life and production, followed by accidents caused by wires and cables, especially when wires and cables explode after combustion, it is easy to cause casualties. Every year, all kinds of wires and cables cause accidents. The fire accident continues. Most of the shells of ordinary … Read more
1、 Wire and AAC Cable material consumption The conventional calculation method of copper weight without conversion: sectional area * 8.89 = kg / km For example: 120 * 8.89 = 1066.8kg/km 1. Quantity of Conductor: （Kg/Km）=d^2 * 0.7854 * G * N * K1 * K2 * C / D = diameter of copper wire, … Read more
The temperature of the cable is closely related to the load, but only checking the load can not ensure that the AAAC Cable is not overheated (1) the thermal resistance coefficient and side-by-side correction coefficient used in calculating the allowable ampacity of cables may be different from the actual situation. (2) when choosing cables to … Read more
Discussion on the cable production process: conductor twisting and twisting : the process of twisting many small diameter monofilaments into a large cross-section conductive core according to certain rules. 1. There are two types of twisted wires: normal twisted wires and irregular twisted AAC Cables. Ordinary strands can be divided into ordinary concentric single stranded … Read more
The maximum current that the pvc wire can bear is not calculated, but the result of experiment. The test method is about 20 ° Under the environment of C, the voltage test is carried out on the 1 meter long wire to obtain the safe current value that the wire can continuously pass through. This … Read more
The use of non-environmental protection cables is strictly prohibited in developed countries, and China also attaches great importance to this field. Relevant Chinese laws and regulations clearly require important buildings to prohibit the use of polyvinyl chloride wires and cables, and halogen-free and low-smoke cross-linked PVC wires and cables must be used to avoid a … Read more