The UPS2000-G-3KVA has a Critical Alarm <Output overload>, ID=0066-02.
UPS2000-G-3KVA switched from Normal mode to Bypass mode.
The Critical Alarm <Output overload, ID=0066-02 > usually is triggered because the Load is more than 110% of the rated load.
The impact on the System: UPS transfers to bypass mode.
A possible cause: is that the load exceeds the UPS rated loading capacity. Due to this, I asked the customer to measure the load connected to the UPS2000-G-3KVA or to take a screen shot of the WebUI monitoring page.
The power ratio=0.8
The max. active power = 3000VA * 0.8= 2.4kW
In our case the Active power is 2.9kW. Which means that the load connected is too big.
Also the critical <Output overload> alarm was triggered because the high Load.
The solution for this case is to reduce the Load or to replace the UPS2000-G-3KVA with one which has a larger capacity.