6. Environmental failures
Environmental failures are caused by users neglecting the operating environment of their equipment. For example, a 30kVA UPS was stored for a long time in a warehouse full of miscellaneous items. The warehouse lacked air conditioning and ventilation, and in summer, the temperature reached 30-40℃ with high humidity. This caused the performance of the UPS components to degrade, and the battery capacity was significantly reduced. After the UPS was installed and put into use, it experienced frequent failures, and the battery capacity was far below the required level. Another example is a 20kVA UPS installed in a simple roofed room. After a storm, the UPS inverter shut down, and the charging board burned out. Inspection revealed that mud and water from the roof had entered the machine through the top vent. In some areas, the mains power conditions are poor, with frequent power outages, causing the batteries to be constantly undercharged, drastically shortening their lifespan. In other areas, high interference voltages frequently superimposed on the mains voltage, causing the secondary surge protectors in the distribution cabinet to burn out repeatedly, sometimes damaging the UPS and consequently other electrical equipment.
As can be seen from the above points, a set of scientific and effective methods should be formulated and strictly followed for UPS maintenance in order to avoid the aforementioned human-caused failures, thereby greatly reducing the UPS failure rate and truly providing safe, reliable, and clean power to electrical equipment without interruption.
7. Sudden power outage fault
Sudden power outages can cause significant damage to UPS hardware and impact data center operations. Most sudden power outages are caused by the UPS exceeding its load limit, triggering automatic shutdown protection. To address this, shut down a few less critical devices, reducing the UPS load rate to below 90%.