United power system and isolated power systems. Relay protection and automation. Automatic emergency control of electric power systems. Device for unloading automation during short circuits. Short circuit severity fixation device. Norms and requirements
Means of the selecting the people with surface water at saving the crews of engineering. Installations, operated in water areas. General technical requirements
Rubber hoses for hydraulic brakes of automobiles. Basic parameters and dimensions, requirements, test, methods, marking, packing, transportation and storage
