United power system and isolated power systems. Relay protection and automation. Automatic emergency control of electric power systems. Automatic overfrequency protection devices. Norms and requirements
Connecting devices. Electrical copper conductors. Safety requirements for screw-type and screwless-type clamping units. Part 1. General requirements and particular requirements for clamping units for conductors from 0,2 up to 35 sq. mm (included)
Automobile roads of general use. Automobile roads of general use. Road not asphalt mixtures and asphalt concrete. Preparation of sample-plates by roller compactor
