(1) The power transmission is not easily affected by the surrounding environment and has high reliability. (2) The insulation distance between wires is small, the land occupation is small, and there is no interference with radio waves. (3) When laying underground, it does not occupy the ground and space, which is not only safe and … Read more
2.1 catalytic aging of copper is an important reason for rubber hair adhesion The experiment of the former Soviet Union Institute of AAAC Cable science proved that copper infiltrated into the insulating rubber from the contact with rubber during vulcanization, and the thickness of 1.0-2.0mm contained 0.009-0.0027% copper. As we all know, trace copper has … Read more
Whether our colleagues in electrical design or factory electrical maintenance can not open the topic of cable selection, we often see that the AAC Cable selection size of the same equipment under the same power will be different in the work, some may be less than one or two levels, and some friends may be … Read more
Project Name: design and processing of high voltage ACSR Cable bridge Innovative ideas: there are three 10kv High-voltage incoming lines for 112201 fully mechanized coal mining face, which are laid from 11 panel substation to equipment train of working face. The high-voltage cable enters the rubber conveying chute section and is suspended along the coal … 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
1. Replace the damaged well cover, cover plate and protection plate, and complete the missing well cover, cover plate and protection plate. 2. Maintain the working shaft stop. 3. Clean up the water and debris in the passage. 4 stairs (ladder) for tunnel maintenance personnel entering and leaving the shaft 5. Maintain the ventilation, lighting, … Read more
1. Manhole and drainage pipe (1) water samples were taken for chemical analysis. (2) remove the water in the well and remove the sludge. (3) paint the iron parts such as cable bracket and hook. (4) check the well cover and ventilation, and check the well body for settlement and cracks. (5) dredge the spare … Read more
The contact resistance of the tail wire contact of AAAC Cable terminal (especially outdoor, sometimes connected by copper aluminum two different metals) will increase under the influence of long-term load and fault current, which will lead to overheating. When the line fails, the fault current flows through the contact, which will burn the contact. Measuring … Read more
1、 Basic introduction of wire and cable Wire and cable: usually twisted by several wires or groups of wires [at least two in each group], similar to rope. Each group of wires is insulated from each other and twisted around the center of a wire. The whole wire is covered with a highly insulating covering … Read more
（1） Mechanical damage accounts for a large proportion of AAC Cable accidents. There are three main causes of mechanical damage. (1) it is directly damaged by external force. If the cable is damaged by accident in the process of urban construction, transportation, or excavation, piling, lifting and handling of underground pipeline engineering. (2) damage during … Read more