What are Recommendations for the AC Power Supply
Recommendations on the AC power supply are as follows:
Use a voltage stabilizer or voltage-regulator to respond to unstable voltages. Use a voltage-regulator in the following situations:
The server is directly powered by the mains supply, and the power supply voltage exceeds the rated voltage by -10% to +5% or the voltage range allowed for the server.
The server is not directly powered by the mains supply, and the mains voltage exceeds the rated voltage by -15% to +10% or the AC input voltage range allowed for the DC power equipment.
To ensure the continuity of power supplies, use the UPS or inverter.
Install an electric generator set for an office to ensure the normal communication and power load in case of mains failure. The capacity of the electric generator set should be greater than or equal to 1.5 to 2 times the capacity of the server with uninterrupted power.
Connect two storage battery strings in parallel. If UPSs are used as storage batteries, only one UPS battery string is required in general. The UPSs need to work in backup mode and can be connected in parallel or serial. If an inverter is used, take the inverter that can provide more power as the primary one, and take the other as the secondary one.