PNST 672-2022

State system for ensuring the uniformity of measurements. State verification schedule for means of measuring of the ellipsometric angles

United power system and isolated power systems. Relay protection and automation. Automatic emergency control of electric power systems. Device for unloading automation during short circuits. Short circuit severity fixation device. Norms and requirements

Occupational safety standards system. Ear defenders. General technical requirements and test methods

Medical electrical equipment. Part 2-44. Particular requirements for the basic safety and essential performance of X-ray equipment for computed tomography

Air quality. Method of determining environmental standards on the example of forest ecosystems

Walking aids manipulated by both arms. Requirements and test methods. Part 3. Walking tables