Automatic protection of mining electrical equipment from emergencies and hazardous conditions

The principles of constructing and functioning of technical means of automatic protection of mine electrical equipment from emergency and dangerous conditions, including the states of inter -phase short and arc industry, current overload, leakage of current to Earth, are considered. Promising directions of improving the circuitry of protective devices are highlighted. The principles of identifying the emergency state in the precinct electric network by autonomous technical devices by the annexation of asynchronous consumer engines, the construction and functioning of the technical devices of automatic bilateral protective de -energization of the mine district power grid.
For students studying mining electrical engineering and automation. It can be useful to engineering and technical workers engaged in the automation of the protection of industrial electrical equipment from dangerous conditions