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The widespread use of explosion-proof electrical equipment has significantly reduced the likelihood of explosive accidents. For users, it is essential to use such equipment correctly and to conduct regular inspections in order to maintain its explosion-proof properties. So, what explosion-proof testing tasks are required for electrical equipment in use? We know that installing and using explosion-proof electrical equipment in explosive hazardous areas is basic common sense. Using qualified explosion-proof electrical equipment can minimize the likelihood of explosive accidents. However, as the usage time increases, factors such as the reduced explosion-proof performance of the electrical equipment, or improper operation by the personnel responsible for its use/maintenance, can cause the equipment to lose its explosion-proof properties, leading to explosive accidents. **To this end, the AQ 3009-2007 \"Code for Electrical Safety and Explosion Protection in Hazardous Areas\" specifies that explosion-proof electrical equipment in use must be sent to a testing center with specialized expertise in explosion protection at least once every three years for inspections of its performance, installation, maintenance, etc. Any deficiencies identified during these inspections must be addressed promptly, and the inspection reports along with details of the corrective actions taken must be filed with the department responsible for supervision and management of work safety. So, what aspects are checked for these electrical devices in use on-site? https://pic1.zhimg.com/80/v2-7fa96972fe141df3ff8f54b948392868_720w.jpghttps://pic3.zhimg.com/80/v2-403583f0dd6f4fc04384ef66aac61d8a_720w.jpg