This standard specifies the terms and definitions, classification, model establishment, requirements, test methods, inspection rules and requirements for the preparation of instruction manuals of dry powder fire extinguishing systems and components. This standard applies to fixed and semi-fixed dry powder fire extinguishing systems (including cabinet dry powder fire extinguishing devices). This standard applies to ABC dry powder fire extinguishing systems and BC dry powder fire extinguishing systems, and Class D dry powder fire extinguishing systems can be used as a reference.