Core contents of the standard: First, system classification and scope of application, dividing elevator energy feedback systems into three categories: resistance energy consumption type, capacitor energy storage type and grid feedback type, and clarifying the applicable scenarios and technical characteristics of different types of systems; Second, comprehensive technical requirements, stipulating the technical requirements of elevator energy feedback systems such as input and output characteristics, energy feedback efficiency, power quality, safety performance, electromagnetic compatibility and environmental adaptability, and clarifying that the energy feedback efficiency of grid feedback systems is not less than 85%; Third, unified test methods, unifying the test methods and test equipment requirements for various technical requirements of elevator energy feedback systems, and stipulating the test methods for key indicators such as energy feedback efficiency, harmonic content and power factor; Fourth, standardized inspection rules, clarifying the items, methods and judgment rules of factory inspection, type inspection and sampling inspection of elevator energy feedback systems to ensure stable and reliable product quality; Fifth, installation and maintenance requirements, stipulating the installation, commissioning, acceptance requirements and daily maintenance requirements of elevator energy feedback systems to ensure the long-term stable operation of the system and achieve the best energy saving effect.