The protection system of cold storage units is a key line of defense to ensure the safe operation of equipment. Unreasonable protection parameter settings and imperfect phase loss and overload protection are core hidden dangers that are easy to be ignored but highly risky, directly affecting the normal operation of the unit, the service life of the equipment, and even laying potential safety hazards.

         Unreasonable protection parameter settings will render the protection system useless. Excessively high parameters will prevent the protection function from being triggered in a timely manner, leaving the unit running in an overloaded and extreme state for a long time and accelerating the aging of core components; excessively low parameters are prone to false protection, leading to frequent unit shutdowns, disrupting refrigeration continuity and affecting cold storage effect.

         Imperfect phase loss and overload protection cannot effectively resist the risks of power abnormalities and unit overload. Phase loss operation is likely to burn out core components such as motor windings, while overload will intensify the wear of equipment such as compressors and fans. Both may cause unit failure shutdown and system paralysis, greatly increasing maintenance costs.

         Although such hidden dangers are hidden, they are far-reaching. It is necessary to scientifically calibrate protection parameters to ensure they meet the unit operation standards, improve the phase loss and overload protection mechanism, regularly inspect the effectiveness of the protection system, timely troubleshoot hidden dangers, and lay a solid line of defense for the safe operation of cold storage units.