This standard specifies the scope, normative reference documents, terms and definitions, product models and meanings, basic parameters, requirements, inspection methods, inspection rules and signs, packaging, and transportation of intelligent maintenance-free supercapacitor DC power supplies (hereinafter referred to as DC power supplies). , storage. This standard applies to DC power product specifications and test methods used in distribution network switching stations, power distribution stations, pole-mounted switches, pole-mounted transformers, box-type substations and other equipment.