The advantages of single-core cable are small cross-sectional area ratio, not easy air oxidation, short-circuit capacity impact resistance, and long service life. The defect of the single-core wire is relatively hard, and it is not convenient to pull the wire in some areas, so it is difficult to straighten out after bending, and it is very easy to destroy the wire after bending. Advantages of multi-core cable Multi-core cable refers to a cable with an upper insulating layer of copper core cable, which can reduce the skin effect of the cable, thereby reducing route loss.
The defects of multi-core cable are poor compressive strength, very easy to break, poor ability to withstand surge current, and inconvenient forming. Single-core cable or multi-core cable is the best transmission line with the same cross-sectional area. The cost of a single copper cable is more cost-effective than that of a multi-copper cable, and the cost of a multi-copper cable is slightly higher.
When installing and wiring tubes, the single-core copper cable looks a little hard, and the multi-core copper cable should be softer and stronger. After installation, single core and multi-core are similar in specific applications.
The difference between multi-core cable and single-core cable in terms of circuit capacity, the rated current capacity of single-core cable is greater than the rated current capacity of three-core cable with the same section; In terms of insulation performance, both single-core and three-core cables need to meet national standards. Under the premise of meeting national standards, there is also a need to leave a certain safety margin, which can be understood as qualified insulation performance, no difference;
In terms of cable use, the heat dissipation performance of the single-core cable is greater than the heat dissipation performance of the three-core cable (the same type of cable), plus the rated capacity of the single-core cable of the same section, the three-core cable, which in the case of the same load or short circuit, the heat output of the single-core cable is less than that of the three-core cable, which is safer to use;
In terms of cable laying, single-core cable laying is more convenient and bending is easier, but the long-distance laying difficulty of single-core cable is greater than three-core cable;
From the installation of the cable head, the single-core cable head is easier to install and convenient to split.
Multicore cable
Multi-core cable refers to the cable with more than one insulated wire core. Cable plays an important role in electronic products and electronic systems, is a key link to connect the various functions of electronic products, and is widely used in aerospace and Marine warships and other fields.
Single-core cable
A single core means that there is only one conductor in an insulating layer. When the voltage exceeds 35kV, most of the single-core cables are used, and the relationship between the wire core and the metal shielding layer can be seen as the relationship between the coil and the iron core in the primary winding of a transformer. When the single-core cable core passes through the current, there will be a magnetic force line cross-linking aluminum package or metal shield layer, so that it has an induced voltage at both ends.
Post time: Aug-22-2023