IEC System of plugs and socket-outlets for household and similar purposes. Particular requirements for SELV plugs and sockets 6, 12, 24, 48 V, a. c. and d. c. , 16 A. Technical requirements
Low-voltage surge protective devices. Part 32. Surge protective devices connected to the d.c. side of photovoltaic installations. Selection and application principles
State system for ensuring the uniformity of measurements. Etalons for coordinate-temporal measurements. Basic principles. Ways for expressing the errors
