Classification and purpose of power cables. Scheme, description

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Power cables. Classification and purpose of cables. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Electrician's Handbook

Power cable - these are several insulated wires in a protective hermetic sheath, designed for the transmission and distribution of electricity.

Cables according to the characteristics of the material of the conductors of the transmitted energy or information are divided into two groups:

electric cables with metal conductors;
optical fiber cables.

Cables with optical fibers may also have additional metal conductors.

Electric cables with metal conductors are classified according to the order of the power transmitted through the cables, the magnitude of the voltage, the type of insulation, purpose, etc. In accordance with this, there are: low, medium and high voltage power cables; power flexible cables; control cables; control cables; low voltage wires and cords; communication cables and wires; RF cables; special cables, etc.

Power cables are designed for the transmission and distribution of electrical energy.

On type of insulation of power cables distinguish between:

power cables with paper insulation, including impregnated and oil-filled ones;
power cables with plastic insulation;
power cables with rubber insulation.

On line operating voltage power cables are divided into:

cables for voltages of 1-10 kV;
cables for voltages of 20-35 kV;
cables for voltages of 110-500 kV.

The above classification is to a certain extent conditional, however, it allows you to systematically present information about a part of the cables, numbering more than 1000 brands and designs.

Author: Koryakin-Chernyak S.L.

See other articles Section Electrician's Handbook.

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