Connecting devices. Electrical copper conductors. Safety requirements for screw-type and screwless-type clamping units, General requirements and particular requirements for clamping units for conductors from 0,2 mm$u2 up to 35 mm$u2 (included)— 32 стр.
Low-voltage surge protective devices. Surge protective devices for specific application including d.c. Selection and application principles. SPDs connected to photovoltaic installations— 24 стр.