Requirements For Dc Power Supply; Considerations On Ac Power Supply; Hvdc Power Supply; Requirements For Hvdc Power Supply - Inspur NF5260FM6 User Manual

restart or resetting of devices.

11.10.2 Requirements for DC Power Supply

DC power supply should operate at the nominal voltage of 240 V DC.

11.10.3 Considerations on AC Power Supply

During the use of AC power supplies:
Use a voltage stabilizer or voltage regulator to respond to voltage fluctuations.

Use a voltage regulator in any of the following situations:
If the device is directly powered by an AC utility power supply: the power
-
supply voltage is outside the tolerance range (–10％ - +5％) of the rated
voltage or the fluctuation tolerance range allowed for the device.
If the device is not directly powered by an AC utility power supply: the
-
utility power supply voltage is outside the tolerance range (–15％ - +10％)
of the rated voltage or the fluctuation tolerance range allowed for a DC
power supply unit.
To ensure a continuous and transient-free AC power supply, please use a UPS

or inverter.
The data center should have a backup generator set to power critical static

and dynamic load in case of utility power failure. Make sure the generator set
can accommodate the total power load of all the IT and cooling devices. Test
the switch-on surge to ensure the generator is turned on reliably. The
performance of the generator should comply with the GB50174 standard.
Generally, two batteries are joined in parallel. Redundant UPSs are required.


11.10.4 HVDC Power Supply

An HVDC (high-voltage direct current) system can solve the existing problems in
conventional AC and low-voltage DC power supplies. At present, the mainstream
HVDC standards applied in China include 240 V HVDC and 336 V HVDC standards.

11.10.5 Requirements for HVDC Power Supply

Temperature:

Operating temperature: -5 °C - 45 °C
-
Storage temperature: -40 °C - 85 °C
-
Relative humidity:

Operating humidity: ≤ 90% RH (40 ± 2℃)
-
-
Sto ra g e h u m i d i ty: ≤ 95% R H (40 ± 2℃)
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