Dc Power Supply Requirement - Inspur NF5280M6 User Manual

UPS and the mains supply should be less than 8 ms. Otherwise, the server will
reboot or reset.

8.10.2 DC Power Supply Requirement

DC power supply system should work under nominal voltage of -48 V, 240 V and
380 V.
When determining the AC distribution capacity in the server room, consider the
working current and fault current. An independent device must have an
independent AC distribution protection apparatus. The maximum capacity of the
current over the configuration protection switch should be greater than the
maximum capacity of the current over the protection switch of each device. When
designing the capacity of an AC power supply system, consider the maximum load
of the system in dynamic mode and static mode and reserve a certain margin. The
cabling on the power distribution panel must be figured out based on the
maximum power supply load. This helps you determine the type and size of the
conducting wire.
Voltages of an AC-powered server and power equipment should meet the
following requirements:
•
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 -4% to 4%. 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 mm
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).
2 , a hard bus cable should be used. If there
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