State system for ensuring the unification of measurements. State special standard and state verification schedule for means measuring radiation field parameters of antenna systems with aperture dimensions from 5 to 100 m and of the airborne antennas within the frequency range from 0,3 to 3,0 GHz
Boxes and enclosures for electrical accessories for household and similar fixed electrical installations. Part 24. Particular requirements for enclosures for housing protective devices and similar power consuming devices
