The difference between power cable and control cable
Difference 1: power cable in order to reduce the voltage drop on the wire in general wire diameter, control cable to take a small current control signal line diameter can be fine. This is based on the use of the request. Thick line of high cost, the line is not good to go. So in the margin, to ensure the use of security in the case of sufficient diameter on the line. Difference 2: wire thread is different. Power cables require linear compressive strength, tensile strength, temperature resistance, corrosion resistance. Control cable requirements are relatively low. Difference 3: power cable core number less, a single core, two core, 3 core, 4 core (three-phase four-wire system), 5 core (three-phase five-wire system). Control cable core number more, from 2 core ~ 61 core, or even more. Control cable also uses a variety of core structure, shielding and other measures to obtain a satisfactory electromagnetic compatibility.
The biggest difference is that the power cable diameter is significantly greater than the control cable. Power cables are usually four-core, or five-core, the control cable is often more than ten cores.
The power cable is used to transmit and distribute large functional power in the main line of the power system. The control cable transfers the electrical energy directly from the power distribution point to the power connection lines of the various electrical equipment. The rated voltage of the power cable is generally 0.6 / 1kV and above, the control cable is mainly 450 / 750V. The same specifications of the power cable and control cable in the production, the power cable insulation and sheath thickness than the control cable thick. First, the control cable belongs to the electrical equipment cable, and the power cable is the cable five categories in the two. The standard for the control cable is . the standard of the power cable is the color of the insulated wire core of the GB control cable is generally black and white, and the low voltage of the power cable is generally separated. Control cable cross-section is generally not more than 10 square feet, the power cable is mainly the transmission of electricity, are generally large cross-section. As a result of the above reasons, the power cable specifications can generally be larger, as large as 500 square feet (conventional manufacturers can produce the range), and then a large cross-section can do the manufacturers to be relatively less, and control the cable cross-section generally Small, the largest general no more than 10 square feet. From the cable core number, the power cable according to the power grid requirements, up to the general 5 core, and control cable transmission control signal, the core number is more, according to the standard more than 61 core, but also can be produced according to user requirements The Control cable: ?id=12 Power cable: ?id=11
