Requirements For Hvdc Power Supply - Inspur NF3180A6 User Manual

8.10.5 Requirements for HVDC Power Supply

The requirements for HVDC power supply are as follows:

Operating range: -5°C to 45°C (23°F - 113°F)
-
Storage and transportation range: -40°C to 85°C (-40°F to 185°F)
-
Relative humidity:

Operating range: ≤ 90% RH (40 ± 2°C) (104 ± 3.6°F)
-
Storage and transportation range: ≤ 95% RH (40 ± 2°C) (104 ± 3.6°F)
-
Vibration performance: Ability to withstand sinusoidal frequencies between 10

Hz to 55 Hz and amplitude of 0.35 mm.
Battery capacity configuration: Ensure continuous operation of servers at full

loads when the power supplies are unavailable. The battery backup time
should be 15 minutes when a diesel generator is available as backup power
source.
Determination of cell voltage and pack number: Depending on the system

capacity and backup time, the cell voltage can be selected from 2 V, 6 V or 12 V.
The insulation monitoring device acts properly if a ground fault occurs or the

insulation resistance is 28 kΩ lower than the set value. The HVDC system is
protected against overcurrent and short circuits and can be manually or
automatically restored after overcurrent or short circuits are rectified.
Over- and under-voltage protection for AC power supplies: The power supply

system can monitor the input voltage changes. When detecting that the AC
input voltage is higher or lower than the specified threshold, which may pose
safety risk on the operation of the power supply system, the system
automatically shuts down. The system automatically restores when the input
voltage is normal.
The site must be free from explosives, conductive media and hazardous gases

that erode metals and affect insulation, and mold.
Protection against high temperature: When the temperature in the power

supply system reaches the specified threshold, the power supply system
automatically reduces the power or shuts down the power amplifier. When the
temperature falls below the threshold, the power supply system restores the
normal power output.
The system provides alarm records and query, and the alarm display can be

updated on a real-time basis. The alarm information is protected against loss
when the system is out of power.
64