CONTROL OF THE VALUE OF TRANSIENT RESISTANCES OF THE NEUTRAL WIRE OF THE ELECTRIC NETWORK TO PREVENT FIRE

Abstract

 The article analyzes the causes of emergency operation of electrical networks in old buildings, where the saturation of premises with technical life support systems has increased significantly, resulting in an increased load on electrical networks that exceeds the calculated values ​​and causes frequent emergency shutdowns of the electrical network that has not been inspected in a timely manner. The article examines the effect of a break in the neutral conductor on an emergency situation in the electrical network, which can lead to an overload of some electrical networks and a decrease in voltage in others, as a consequence - an increase in the temperature of the electrical network conductors, which leads to ignition of surrounding building structures and a fire. The article examines the effect of the neutral conductor on the balance of the system and the flow of compensatory current through the neutral conductor and the influence of various factors that can lead to an emergency situation. The need for further searches for technical solutions to protect electrical networks from high transition resistance as a result of a break in the neutral conductor is substantiated.