Hvdc Power Supply Suggestions - Inspur NF5280M6 User Manual

•
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 is free from explosive materials, 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.

8.10.6 HVDC Power Supply Suggestions

•
Terminal equipment can be connected to power sockets or wiring terminals.
Wiring terminals are recommended.
•
Do not use a shunt circuit breaker to connect to or control multiple power
modules through a multi-purpose power socket.
•
Choose DC circuit breakers based on the rated current of the equipment. The 10
A or 16 A DC breakers are recommended.
•
Recommended standards for equipment power wiring: Connect the DC output
positive pole to terminal N of the equipment power cable. Connect the DC
output negative pole to terminal L of the equipment power cable. DC system is
strictly forbidden to be grounded.
77