United power system and isolated power systems. Relay protection and automation. Distance and overcurrent protection of power lines and utilities 330 kV and above. Testing
Medical electrical equipment. Part 2-28. Particular requirements for the basic safety and essential performance of X-ray tube assemblies for medical diagnosis
Industrial-process measurement and control. Data structures and elements in process equipment catalogues. Part 11. Lists of properties of measuring equipment for electronic data exchange. Generic structures
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