PVC cables will get hot during transportation, and the continuous expansion of the load current will increase the ambient temperature of the wires and cables. If they are not solved in time, they will have adverse effects on the wires and cables.
1. The quality of the connector is not good
The connector production technology is not very good, and the socket connection is inseparable, resulting in excessive contact resistance at the interface, and also causing the cable to become hot.
2. The conductor resistor does not meet the regulations
This reason is the most common reason for the over-temperature of the wire and cable. If the conductor resistor does not meet the requirements, it will cause the cable to become hot during operation.
3. Model does not meet
The improper selection of the cable wire leads to too small electrical conductor cross-section of the applied cable wire, which causes a load condition during operation. After long-term use, the cable wire becomes hot and the heat pipe heat dissipation is not balanced, resulting in a hot condition.
4. The protective cover is damaged
Part of the sheath of the armored cable is damaged. After the water leaks, the dielectric strength can cause a slow destruction effect, resulting in a gradual decrease in grounding resistance, and also causing hot conditions during the operation of the cable.
5. Excessive aggregation
When the cables are installed, the ordering is excessive, the actual effect of natural ventilation heat pipes for heat dissipation is not good, or the cables are too close to other pyrogens, which endangers all the normal heat pipe heat dissipation of the cables, and will also cause the cables to cause heat dissipation during operation. Hot condition.