Simple algorithm for cable current-carrying capacity

After calculating the total power based on the power of the electrical equipment, I=P/U is multiplied by a coefficient of 0.85 according to the formula. If it's a bit more complicated, it would be one kilowatt with two amperes of current! It is universal and includes the capacity of the thrown current. 1KW=2A

There are also methods for choosing cables. Calculated by current, the relatively simple selection algorithm given below takes aluminum core wires as the calculation item.

Ten Lower Five: One Hundred Upper Two: Two Five Three Five Four Realms, seventy-five five and a Half times ~! This is a mnemonic

The current of BLV lines under ten square millimeters can carry five times the diameter of the wire!

The current carrying capacity of BLV lines over 100 square millimeters is twice that of the wire diameter.

The BLV currents of 25mm ² and 35mm ² are carried on the divider lines at 4 times and 3 times respectively.

The current capacity of 70mm ² and 95mm ² is 2.5 times that of the wire diameter.

In addition to this content, for copper core wires, the current is calculated based on the upgrade multiple of aluminum wires. That is to say, for BV-10mm ², the current is calculated based on BLV-16mm ². The same applies to others.

When the wire is running through plastic or PVC pipes, the calculated current should be multiplied by a coefficient of 0.8

When the wire is running through the steel pipe, the calculated current is multiplied by 0.9

When the wire passes through a high-temperature place, the calculated current result is multiplied by 0.7

If the wire has any of the above three situations, you can first multiply by 0.9 and then by 0.7, or directly switch to 0.85

The current of a cable with four or five cores is multiplied by 0.85 and then by 0.7

The overhead power line of bare wire is relatively simple, with a coefficient of 0.9, but it also depends on the environment. A discount of 85% is more reliable.

Select the purpose of the cable based on the on-site conditions

For instance, ordinary YJV cables are used in cable trays. Armored cables can be directly buried and can withstand external force damage. Armored tensile strength cables are suitable for high-rise buildings and direct burial installation.

If you don't understand what I say, take a look at the 35KV electrical engineering book. It contains the commonly used cable models and electrical equipment.

In the power industry, the current-carrying capacity of cables is a crucial parameter, directly affecting the safe operation and performance of the cables. Recently, a new simple algorithm for cable current-carrying capacity has emerged, bringing about a revolutionary change to the power industry.

The R&D team of this algorithm stated that based on factors such as the cross-sectional area of the cable, material properties, and environmental temperature, they proposed a more precise calculation method, which can accurately predict the current-carrying capacity of the cable and effectively avoid overloading and safety hazards.

In past experiments, this algorithm has been verified. Compared with traditional methods, its calculation results are more accurate and reliable. Experts say that the advent of this algorithm will provide a more reliable basis for the design and operation of power systems, and is expected to enhance the safety and efficiency of the entire power industry.

Industry insiders have all expressed that the introduction of this new algorithm will greatly promote technological progress in the cable field and inject new vitality into the development of the power industry. In the future, with the further promotion and application of this algorithm, the safety and stability of the power system will be further enhanced, providing more reliable power security for our life and work.

The advent of this new algorithm marks a new milestone in the calculation of cable current-carrying capacity and opens up new possibilities for the development of the power industry. With the continuous advancement of technology, we have every reason to believe that the power system will embrace a safer and more efficient future.