Слайд 2Energy transmission is one of the basic elements of modern communication
Слайд 3Practically, one can say that communication is carried out due to the
energy being transmitted over the transmitting lines
Слайд 4Lines used for energy transmission are classed into the following three types:
overhead, indoor and underground
Слайд 5These types are different in construction and in the elements they are
made of
Слайд 6As for overhead lines, they include line conductors, insulators and supports
Слайд 7Indoor lines include conductors, cords and buses
Слайд 8The conductors in indoor lines may include one wire or a combination
of wires
Слайд 9As for underground lines, they usually include line conductors and insulators
Слайд 10Underground lines are laid under earth
Слайд 11They are mostly used in cities and in industrial areas.