A method of preventing fire when a fault in the electrical installation or mains power and device for its realization

摘要

1. A method of preventing fire when a fault in the mains current or electrical systems and apparatus for its implementation, which consists in that the measured electric current controlled section; forming low and high frequency components of the measured current signal; measuring at least one of the short-circuit current, overload current, leakage current, the deviation from the desired voltage values; and / or "occurrence - quenching sparks" shape-variable signal cycle when the current equal to zero; determine current arcing with the shunt current; determine the width of the spark gap; form the level of danger of explosion, fire or failure of the system, leading to the accident; displaying warning signals and / or commands, in particular, trip command controlled mains or electrical; control the processes of formation of signals and commands; Power systems, characterized in that the injected current cycle length definition arcing "appearance - spark quenching" .2. An apparatus for performing the method to claim 1, comprising a unit of measurement of electrical current controlled section, the block forming the low-frequency and high-frequency components of the measuring unit, at least one of the short-circuit current, overload current, the leakage current magnitude voltage deviations from the desired values.; and / or the pulse shaping unit-signal feature series "appearance - quenching sparks" arcing current detection unit considering shunt current detection unit of the spark gap, the unit for calculating the level of fire hazard; block DISPLAY