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Common EPS Emergency Power Supply Alarms
Release time:
2019-02-20
When using an EPS emergency power supply, various alarms may occur, and each alarm carries a different meaning. This article provides explanations for common alarms encountered in EPS emergency power supplies—these are specific to EPS emergency power supplies of this brand and do not cover common alarms found in EPS emergency power supplies of other brands. The details are as follows: 1. Main input power failure or rectifier input switch disconnected: - The input phase voltage is outside the range of (165–250) VAC; - The input frequency is outside the range of (45–55) Hz; - The rectifier input switch is open; - The phase sequence of the input power supply is incorrect. 2. Low battery voltage: - A low-voltage alarm is triggered when the system is powered on. This is a normal condition; simply press the silence button to disable the alarm. Battery switch...
When using an EPS emergency power supply, various alarms may occur, and each alarm carries a different meaning. This article provides explanations for common alarms encountered with EPS emergency power supplies; it does not cover common alarms specific to EPS emergency power supplies of other brands. The details are as follows:
1. The main power supply has failed or the rectifier input switch has been disconnected.
The input phase voltage is not within the range of (165–250) VAC; the input frequency is not within the range of (45–55) Hz; the rectifier input switch is open; the phase sequence of the input power supply is incorrect.
2. Low battery voltage
Low-battery alarm upon power-on—this is a normal condition. Press the mute button to silence the alarm. If the battery switch is turned off, the rectifier will shut down due to an abnormal mains input, resulting in no charging voltage.
3. Battery discharge
When the battery discharges to a low voltage, the alarm sound immediately activates and automatically stops after approximately 90 seconds. When the battery discharge reaches near its critical termination voltage, the alarm sound reactivates.
4. EPS emergency battery overload
The load power exceeds the rated output power, triggering an emergency power supply alarm. When the emergency power supply alarm is activated, you need to reduce the load; otherwise, the emergency power supply will automatically switch into a whole-machine protection mode.
5. Inverter output overload
If the load exceeds 120% of the EPS emergency power supply’s rated capacity, the inverter can continue to supply power to the load for 1 minute before the entire unit is protected.
6. Overheating or fan failure
When the control system of the emergency power supply, the inverter power module, or the rectifier power module overheats due to ambient temperature or fan failure, the entire emergency power supply unit will be protected.
7. Other line fault alarms
The connection cable between the charger and the battery pack is disconnected or short-circuited; the protection mechanism in the output circuit has been activated; the connection cable between batteries is disconnected; and there is an open circuit or short circuit in the main and branch lines of the emergency output.
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