Customer Cases

UPS Power Supply Sales Qu: 13775032303 Same number for WeChat

Analysis of Five Types of UPS Alarm Sounds

When UPS power supplies operate in a 220V~380V voltage environment, equipment alarm sounds often confuse users. Below are the causes and handling suggestions for different alarm sounds:

1. Continuous Noise Types

   
• Abnormal cooling fan noise: High-power UPS units have built-in cooling systems with noise ≤55 decibels for new equipment. If abnormal noise increase is detected, immediately clean dust accumulation on the fan blades and dust filter (quarterly cleaning recommended)
   
• Power frequency transformer resonance: The 50Hz alternating current sound generated during battery charging is a normal phenomenon, which can be mitigated by installing shock pads under the equipment
  

2. Regular Prompt Tones

   
• Single "beep" sound: Standard feedback tone for successful equipment startup/shutdown
   
• 5-second interval alarm: Indicates entering battery power supply mode; check if mains power is interrupted or voltage is below 176V
  

3. Emergency Alarm Sounds

   
• Irregular abnormal noise: Accompanied by abnormal equipment heating (>60℃), may indicate capacitor or circuit failure
   
• Continuous rapid alarm: Automatic shutdown warning when battery power is remaining <15%; immediately save data
  

Professional Maintenance Suggestions

We provide:

   
1. Factory-certified engineer team (holding APC/Eaton/Schneider certification qualifications)
   
2. Battery health detection services (including internal resistance testing/floating charge voltage calibration)
   
3. Computer room power environment evaluation (free detection of voltage fluctuations/harmonic interference)