S-Pb: ENSTO ROSEP, 2007. 222 s. Authors: Login C. E. , Logins A. In. , Shamanov D. G. Strikes B. M. This edition is devoted to the design of overhead power lines of 0.38-20 kV with self-supporting isolated and protected wires. The use of self-supporting insulated and protected wires is by far the most progressive and promising way to develop electric distribution networks. The high economic efficiency of the use of such wires is achieved due to a significant increase in the reliability of electricity supply to consumers and a sharp reduction in operating costs compared to non-insulated wires. It consists of four books .. Book 1 - "A system of self-supporting isolated wires up to 1 kV without a separate carrier element" , Book 2 - "A system of self-supporting isolated wires up to 1 kV with an isolated zero carrier conductor" , Book 3 - "A system of self-supporting insulated wires up to 1 kV with a non-insulated zero-carrier conductor" , Book 4 - "The system of protected wires with a voltage of 6-20 kV" . Book 1 is a pilot project of this series and contains materials for use in electrical and mechanical calculations of elements of power lines. Mounting patterns of supports, recommendations for the use of ENSTO linear reinforcement for a system of self-supporting insulated wires without a separate bearing element. Edition 2 is supplemented with tables of mounting booms and voltages of wires and tables of calculated spans on the PUE of the 7th edition . The manual is intended for engineering and technical workers involved in the design, construction and operation of electrical networks. As well as for students of advanced training courses, students and teachers of electric power higher and secondary educational institutions as a teaching aid and reference manual .