Analysis of the use of the surge arresters as a protection device against lightning overvoltages of the 6-10 kV overhead line of signalization, centralization and blocking on polymer brackets.

The article analyzes damage to 6-10 kV overhead lines designed to power signaling, centralization and blocking devices from lightning overvoltages. The protection devices against lightning overvoltages used for overhead lines and the principle of their operation are considered. The requirements for operation of the protective devices are taken into account. A comparative analysis of the technical characteristics of traditional insulation and insulating polymer brackets is carried out. The installation of the surge arresters on an 6-10 kV overhead line of signaling, centralization and blocking and a longitudinal power supply line located on the field side of the contact network towers on polymer brackets is considered. Recommendations on the choice of the surge arrester are given. [ABSTRACT FROM AUTHOR]