Grounding protection is an important guarantee for the electrical safety of cold storage. The lack of grounding protection and the existence of electric leakage hazards are core safety risks that are easily overlooked during the operation of cold storage. They directly threaten the safety of equipment and the personal safety of operation and maintenance personnel, and may also damage the refrigeration system.

         The core function of grounding protection is to conduct the leakage current of the equipment into the ground, avoiding accidents such as electric shock and electrical fire caused by leakage. When the grounding protection is missing, the outer shell of the equipment is prone to be electrified. Once personnel touch or come into contact with the line, electric shock is likely to occur; at the same time, the leakage current may damage core components such as electronic control components and compressors, leading to unit shutdown.

         Electric leakage hazards are mostly caused by poor grounding, aging lines and damaged insulation layers, which will cause waste of electrical energy, interfere with the normal operation of the refrigeration system, and increase operation and maintenance costs. It is necessary to standardize the setting of grounding protection devices, regularly check the insulation of lines, timely detect and eliminate electric leakage hazards, build a solid electrical safety barrier, and ensure the safe and stable operation of the cold storage.