Unified power energy system and isolated power systems. Electrical networks. Basic circuit diagrams of switchgears at voltages from 35 kV up to 750 kV for substations. Generic solutions. Application recommendations
United power system and isolated power systems. Relay protection. Inductive measuring current transformers for protection with a closed magnetic circuit. Methodology guidelines for determination of time to saturation during short circuits
Gas self-defense arms. Gas pistols, revolvers, shoot devices and tubeless arms. Safety requirements. Types and methods of control during safety certification tests
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