1.The insulation has deteriorated due to aging. The insulation of power cables is subject to thermal, chemical and mechanical actions that are accompanied by electrical action, so that physical and chemical changes occur in the insulating medium, and the insulation level of the medium is reduced. The insulation is damp. Intermediate joints or terminal heads … Read more
Because cables are used in many different environments, they look very different in appearance. But regardless of any cable type, they are used as a conductor for signal transmission. These acsr conductor size also have different quality performances in transmitting different signals. Except for some special applications, the cables currently used for audio and video … Read more
The ultimate principle for power supply lines in selecting cables is to ensure the safety of power supply, reduce costs to the utmost extent, and be reasonable in technical design. The selection of AAAC conductor is mainly based on the following principles: Choose according to the duration and the maximum allowable load current. The selected … Read more
There are single core cables and multi-core cables. Some users who don’t understand have doubts. 3 + 2 core cables and 4 + 1 core cables are all 5-core cables. Is there any difference between them? The following small series to introduce the wire and cable 3 + 2 and 4 + 1 core meaning … Read more
It’s common knowledge that soldiers come to cover water and earth, and water and fire are inherently contradictory. The use of water to extinguish fires is something everyone knows, but in fact, not all fires are suitable for extinguishing fires with water, and we need to consider fires. The source of the problem. If wires … Read more
The occurrence of ACSR Cable 336.4 MCM faults is accompanied by the laying and use of cables. The location of cable faults varies with cable laying methods, and the difficulty in locating is gradually increasing. Among them, the positioning and searching of bridges, tunnels, and trenches are relatively simple, while the direct-buried method is the … Read more
When Low voltage cables and middle voltage Cables are constructed in winter, because the outdoor temperature is below minus 10 ℃, the low temperature polyvinyl chloride and cross-linked polyethylene insulation and sheath materials show hard and brittle characteristics, such as accidental accidents during the laying process If bumped, the insulated core and copper shield are … Read more
Power cables are known as the nerves of modern industry. Modern human life and production cannot do without the help of wires and cables. Since the founding of the People’s Republic of China, China has realized the important role of wires and cables in the future economic development, so it has spent a lot of … Read more
At present, there are various on-site treatment methods for the armor layer of low-voltage direct-buried cables, including single-ended grounding and two-end grounding. There are also those that are not grounded at both ends. According to the different treatment methods of the steel tape armor at both ends of the field cable, after the cable fails, … Read more
1. Keep a distance of 2m when the mine AAAC cable is installed in parallel with the thermal pipeline, and keep 0.5m when crossing. 2. When the cable is installed in parallel or across other pipes, a distance of 0.5m must be maintained. 3. When the cable is directly buried, the depth of the 1-35kV … Read more