THE CURRENT STATE OF IMPROVING THE EFFICIENCY OF FIRE PROTECTION OF ELECTRICAL NETWORKS IN THE SWITCHING PLACES OF EXCESSIVE CONSUMER POWERS

Abstract

The work is aimed at increasing the efficiency of fire protection of electric networks in the switching points of excessive consumer capacities. It analyzes the fire protection of buildings and electric networks, analyzes the technical solutions of the elements of the fire protection system of electric networks in the leading countries of the world, and substantiates the ways of increasing the fire protection of electric networks in the places of switching of excessive consumer capacities.

The conducted analysis of ways to improve fire protection of buildings and electrical networks shows a steady trend towards maintaining the number of fires from sources of ignition of electrical origin. Despite the development of modern protection devices, electrical switching points remain one of the places where significant heat generation can occur due to the appearance of a large transient resistance. An increase in the temperature of switching points can cause spontaneous ignition of outlet parts and finishing materials.

Today's methods of assessing the technical condition of switches are mainly reduced to the analysis of actual parameters and their comparative analysis with the limit values determined by regulatory documents that determine the permissible technological parameters of oil and magnetic switches. Due to the rather high cost of switching devices, non-destructive testing methods are used for their diagnosis, which do not require the destruction of the product, each of which is regulated by its own state standard. Based on the results of diagnostics and tests, exceedance of the actual parameters is determined, as well as defects, their location and causes are identified.