Wire and cable have become the main carrier of power transmission. Whether it is electrical equipment, lighting lines or household appliances are inseparable from the wire and cable. Although it is only a supporting industry, it occupies more than half of the electrician industry. The quality of wire and cable will directly affect the quality of the project and people's safety, it will also affect the cable's development prospects.
In the course of operation of wires and cables, accidents often occur, especially if non-standard wires and cables are used. When the cable is in operation, when two-phase (and multi-phase) grounding or phase-to-phase short-circuit faults occur, the system is mostly tripped. This kind of failure phenomenon is commonly called as a shotgun. Here we will say that the main factors that cause the "cable blasting" are: 1. The short-circuit fault between the three-phase cores inside the cable, or one of the short-circuit faults of the cable sheath, generates very large amounts of heat. Fault burst.
2. For example, particles, impurities, bubbles or the like in the insulating layer, or external mechanical damage.
3, check the cable is bent too much to give the cable to hurt.
4. The bending radius is too small, mechanical external damage, DC resistance test ion release, rated current overload.
If there are frequent shot-blasting failures on the cables, it indicates that there are major problems in the construction, operation, maintenance, and management of the cable lines, and sufficient attention must be paid. After the repair work is completed, the cause must be carefully searched and eliminated to avoid recurrence. Shooting accident. Or keep the equipment running by replacing cables and wires.
In the course of operation of wires and cables, accidents often occur, especially if non-standard wires and cables are used. When the cable is in operation, when two-phase (and multi-phase) grounding or phase-to-phase short-circuit faults occur, the system is mostly tripped. This kind of failure phenomenon is commonly called as a shotgun. Here we will say that the main factors that cause the "cable blasting" are: 1. The short-circuit fault between the three-phase cores inside the cable, or one of the short-circuit faults of the cable sheath, generates very large amounts of heat. Fault burst.
2. For example, particles, impurities, bubbles or the like in the insulating layer, or external mechanical damage.
3, check the cable is bent too much to give the cable to hurt.
4. The bending radius is too small, mechanical external damage, DC resistance test ion release, rated current overload.
If there are frequent shot-blasting failures on the cables, it indicates that there are major problems in the construction, operation, maintenance, and management of the cable lines, and sufficient attention must be paid. After the repair work is completed, the cause must be carefully searched and eliminated to avoid recurrence. Shooting accident. Or keep the equipment running by replacing cables and wires.
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