Switches for household and similar fixed electrical installations. Part 2-6. Particular requirements. Fireman’s switches for exterior and interior signs and luminaires
State system for ensuring the uniformity of measurements. State verification schedule for means of measuring ultrasound power in water within the frequency range from 0,5 to 12 MHz
Medical electrical equipment. Part 2-8. Particular requirements for the basic safety and essential performance of therapeutic X-ray equipment operating in the range 10 kV to 1 MV
