The difference between power and control cables

Often heard in the project mentioned power cables and control cables, power cables and control cables, what is the difference between 1. Executive standard: control cable is 9330, power cables is GB12706. 2. core color: control cable insulation core color is usually black printed white, power cables low-voltage are generally color-coded. 3. role: control cables will be the power from the power system distribution point directly to a variety of electrical equipment power connection lines, while power cables are mainly used in the power system trunk lines for transmission of strong electrical energy, through the current is large, power cables in the power system trunk lines for transmission of strong electrical energy, through the current is large. Transmission to a variety of electrical equipment power connection lines, and power cables are mainly used for hair, distribution, transmission, transformation, power supply lines in the transmission of strong electrical energy, through the current is large, power cables in the power system backbone for the transmission and distribution of large functions of electrical energy. 4. cross-section: power cables are a one-time load conductor, the amount of current-carrying capacity with the increase in power increases, the application of the wire must also be with the increase in the current cross section And increase, so the specifications of the power cable is generally larger, up to 500 square meters, and then larger cross-section of the general can do the manufacturers are relatively few. Control cable is the secondary command wire, used to control the contactor and other equipment current-carrying operations, the load current is very small, and the wire cross-section is very small, so the control cable cross-section is usually smaller, and larger usually not more than 10 square meters. 5. cable core: power cable core number is less, including single-core, two-core, 3-core, 4-core and 5-core, according to the grid requirements, more generally for 5-core. Control cables are used to transmit control signals, which contain a large number of cores, ranging from 2 cores to 61 cores or even more, control cables are also used in a variety of core structure, shielding and other measures to obtain satisfactory electromagnetic compatibility.6. Rated voltage: the rated voltage of power cables is generally 0.6/1kV and above, and control cables are mainly 450/750V.7. Sheathing: power cables require sheathing Has sufficient compressive strength, tensile strength, temperature resistance and corrosion resistance. Control cable requirements are relatively low. When the production of the same specifications of industrial power cables and control cables, power cable insulation and sheath thickness than the thickness of the control cable to be thick.

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