Medical electrical equipment. Part 2-51. Particular requirements for safety, including essential performance, of recording and analyzing single channel and multichannel electrocardiographs
Power cables with extruded insulation and their accessories for rated voltages above 30 kV (Um = 36 kV) up to 150 kV (Um = 170 kV). Test methods and requirements
Switches for household and similar fixed electrical installations. Particular requirements for switches for household electrical bells. General specifications
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