Recommendations For Hvdc Power Supply; Dc Power Supply - Inspur NF3180A6 User Manual

8.10.6 Recommendations for HVDC Power Supply

Terminal devices 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 L of the equipment power cable. Connect the DC
output negative pole to terminal N of the equipment power cable. DC system is
strictly forbidden to be grounded.
The upstream input terminal of the power supply system is equipped with a

surge protection device to protect the system against a minimal voltage surge
of 10/700 us, 5 kV and a minimal current surge of 8/20 us, 20 kA.
All cables in the power distribution frame (PDF) comply with YD/T 1173

specifications, and the diameters of all power cables meet the requirements
for wire ampacity.

8.10.7 DC Power Supply

The DC power supply should be stable and reliable. The power equipment should
be deployed near the server. The standard DC voltage is -48 VDC with a fluctuation
range of server power between -38.4 V to -57.6 V.
65