Recommendations On The Ac Power Supply - Inspur NF5180M6 User Manual

For an AC-powered server, the voltage fluctuates from -10% of the rated voltage to

+10% of the rated voltage.
For AC-powered power equipment and important buildings, the voltage fluctuates

from -10% of the rated voltage to +10% of the rated voltage.
The AC frequency fluctuates from -3% to 3%. The sinusoidal distortion rate of the

voltage waveform is smaller than or equal to 5%.
The server room should be equipped with a self-supplied electric generator set. The
electric generator set should perform automatic power-on/off, automatic recruitment,
remote communication, remote control, and remote detection, and provide standard
interfaces that comply with communication protocols.
The power cable used for AC/DC power distribution should meet the following
requirements:
The conductor in the neutral wire must have the same cross-sectional area as the

conductor in the live wire.
The power feeder should be selected based on the long-term load. If the cross-

sectional area exceeds 95 mm2, a hard bus cable should be used. If there is a
great difference between the short-term load and the long-term load, cables can
be routed by stage.
AC/DC conducting wires should be flame-retardant and be routed according to the

Code for fire protection design of tall buildings (GB50045).

8.10.3 Recommendations on 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 +10% 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 -10% to +10% or the AC input voltage range
allowed for the DC power equipment.
To prevent interruption or surge of AC power supply, use the UPS or inverter.

The data center should be equipped with self-supplied generator set in case of

mains failure to ensure proper function of important load and important power
load. All electrical equipment such as IT equipment and refrigeration equipment
shall be considered. Check the start-up shock to ensure that the generator can start
reliably. The generator performance should meet the requirements of Code for
Design of Data Centers (GB50174).
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