What are the differences between power cables and control cables?

- Jun 05, 2020-

cable020Electric cable (208)


The power cable is used to transmit and distribute large-function electric energy in the main line of the power system, and the control cable directly transmits the electric energy from the distribution point of the power system to the power supply connection line of various electrical equipment. The rated voltage of power cables is generally 0.6/1kV and above, and the control cables are mainly 450/750V. When the power cables and control cables of the same specifications are produced, the insulation and sheath thickness of the power cables are thicker than the control cables.


First of all,

Control cables belong to cables for electrical equipment, and power cables are two of the five categories of cables. The color of the insulated core of the control cable is generally black and white, and the low voltage of the power cable is generally color-separated.


The cross-section of the control cable generally does not exceed 10 square meters, and the power cable is mainly used to transmit power, which is generally a large cross-section.


Due to the reasons mentioned above, the specifications of power cables can generally be large, as large as 500 square meters (the range that can be produced by conventional manufacturers), there are relatively few manufacturers that can do as large cross-sections, and the cross-sections of control cables are generally Smaller, the maximum is generally not more than 10 square.


In terms of the number of cable cores, the power cable is generally up to 5 cores according to the requirements of the power grid, and the control cable is used to transmit control signals. The number of cores is large. According to the standard, there are 61 cores, but it can also be produced according to user requirements .


Electric cable (482)


Commonly used wire and cable and power cable models:

VV—copper core PVC insulated and sheathed power cable


VLV—Aluminum core PVC insulated PVC sheathed power cable


YJV22—Copper core XLPE insulated steel tape armored PVC sheathed power cable


KVV—PVC insulated and sheathed control cable


227IEC 01 (BV)-BV for short, single-core hard conductor non-sheathed cable for general use


227IEC 02 (RV)—referred to as RV, general purpose single-core soft conductor non-sheathed cable


227IEC 10 (BVV)-referred to as BVV, light PVC sheathed cable


227IEC 52 (RVV)-referred to as RVV, light PVC sheathed flexible wire


227IEC 53 (RVV)-referred to as RVV, ordinary PVC sheathed flexible wire


BV—Copper core PVC insulated wire


BVR—copper core PVC insulated flexible cable


BVVB—Copper core PVC insulated and sheathed flat cable


JKLYJ—XLPE insulated overhead cable


YC, YCW—heavy rubber flexible cable


YZ, YZW—medium rubber flexible cable


YQ, YQW—light rubber sheathed flexible cable


2.5 mm electrical wire