Dry goods | What are the differences between power cables and control cables?

1. The difference between the implementation standards for power cables and control cables: The standard for control cables is 9330, and the standard for power cables is GB12706.

2, the difference between the color of the power cable and the control cable cable core: the color of the insulated cable core of the control cable is generally black and white, and the low voltage of the power cable is generally a color separation.

3, the difference between the role of power cables and control cables: control cables from the distribution point of the power system to direct transmission of power to a variety of electrical equipment and appliances power connection lines, and power cables are mainly used in hair, distribution, transmission, change, In the power supply line, strong electric energy is transmitted, and a large current is passed. The power cable is used to transmit and distribute large-functional electric energy in the main line of the electric power system.

4. The difference between the power cable and the control cable cross-section: The power cable is a load wire, the current capacity increases with the increase of power, and the cross-section of the wire must increase with the increase of the current. Therefore, the specifications of the power cable are general. Larger, up to 500 square meters (range that conventional manufacturers can produce). Relatively few manufacturers can do as large cross-sections. The control cable is a secondary command wire, which controls the current-carrying operation of the contactor and other devices. The load current is very small and the cross section of the conductor is very small. Therefore, the cross-section of the control cable is generally small, and the maximum is generally not more than 10 square.

5, the difference between the power cable and the control cable cable core number: the power cable core number is less, there are single core, two cores, 3 cores, 4 cores (three-phase four-wire system), 5 cores (three-phase five-wire system) Depending on the grid requirements, the maximum is generally 5 cores. The control cable transmits control signals with more cores, ranging from 2 cores to 61 cores, or even more. Control cables also use various core structures, shielding and other measures to obtain satisfactory electromagnetic compatibility effects.

6, the difference between the rated voltage of the power cable and the control cable: the rated voltage of the power cable is generally 0.6/1kV and above, and the control cable is mainly 450/750V.

7. The difference between the wire sheath of the power cable and the control cable: The power cable requires that the wire sheath has sufficient compressive strength, tensile strength, temperature resistance, and corrosion resistance. Control cable requirements are relatively low. In the production of industrial electrical power cables and control cables of the same specifications, the insulation and sheath thickness of power cables is thicker than that of control cables.