electric cables Jimmy Daniel Luna gONZALES Edward duvan ravelly What is: •A cable is an electrical conductor (usually copper) or a set of them, usually covered with an insulating or protective material. electric cables • The cables that are used to conduct electricity are usually made of copper, 2 due to the excellent conductivity of this material, or aluminum that although has lower conductivity is lighter for the same capacity and typically cheaper than copper. types of cables •for light transmitters (fiber optic cable) or mechanical effort (mechanical cable). •electric cables. SATA cable, low power to transmit information at high speed. • Cable with 3 conductors of 2.5 mm2 (cross section) for domestic electrification. It complies with the standard colors according to the CEI. • Heavy duty high voltage cables with copper conductors and steel reinforcement. Optical drivers • Light conductors, (English: coil) in this case, the coating, while protecting the driver itself, also prevents the scattering of light and thereby loss of signal. Therefore it is used to send information over long distances quickly and very high quality APPLICATIONS OF MATERIALS DRIVERS • They are the materials used conventionally in the action of transporting electrical energy. The most known and used materials for their low electrical resistivity are copper, silver, gold and platinum. An electric cable consists of • Conductor: Element that drives the electric current and can be of different metallic materials. It can be formed by one or several threads. • Insulation: Coating that surrounds the driver, to prevent the circulation of electrical current outside it. • Filling layer: Insulating material that wraps the conductors to maintain the circular section of the assembly. • Cover: It is made of materials that mechanically protect the cable. Its function is to protect the insulation of the drivers from the action of temperature, sun, rain, etc. Components • Conductors (copper, aluminum or other metal). • Shielding or Shielding (used in radiofrequency conductors, can be a mesh or a tube, smooth or corrugated) • Insulations (plastic, elastomeric materials, paper impregnated in viscous oil or fluid). • Protections (reinforcements and external covers additional to the insulation to increase the resistance to certain critical conditions of operation). Number of drivers Unipolar: A single conductor.1 • Bipolar: 2 drivers. • Tripolar: 3 drivers. It is unifase (brown or black), a neutral (blue) and earth (green and yellow). • Tetrapolar: 4 drivers. They are two phases (brown and black), a neutral (blue) and earth (green and yellow). • Pentapolar: 5 drivers. These cables are composed of 3 phases (gray or light blue, brown and black), a neutral (blue) and earth (green and yellow). Level of tension • very low voltage cables (up to 50 V). low voltage cables (up to 1000 V). medium voltage cables (up to 30 kV). high voltage cables (up to 66 kV). very high voltage cables (above 770 kV). ありがとう ございました
