United power system and isolated power systems. Relay protection and automation. Automatic emergency control of electric power systems. Automatic devices for limiting voltage reduction. Norms and requirements
Air conditioners, liquid chilling packages and heat pumps with electrically driven compressors for space heating and cooling. Methods for measuring the performance
Household and similar electrical appliances. Safety. Part 2-113. Particular requirements for cosmetic and beauty care appliances incorporating lasers and intense light sources