H3C CR19000-20, Installation Manual

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3-12
Figure3-15 Connecting an AC power cord
5. Connect the other end of the AC power cord to an AC power source.
Installing HVDC power supplies
Available HVDC power supplies
The PSR3000B-54AHD power supply supports AC input and HVDC input and is available for the
router for HVDC input. See
Table3-2 for the PSR3000B-54AHD power supply specifications.
HVDC power supply configuration guidelines
Determine the number of HVDC power supplies based on the system power consumption and the
HVDC power supply configuration based on the power input mode.
•
As a best practice, configure N+N (dual power sources) HVDC power supply redundancy. Make
sure N+N is not larger than the total number of power supply slots.
N is the number of HVDC power supplies.
•
Make sure the total output power of the power supplies is greater than the system power
consumption (with a 20% power surplus as a best practice).
•
Provide a circuit breaker for power input of each HVDC power supply. Make sure each circuit
breaker has a current rating not less than 20 A and meets the requirements for HVDC power
supply, such as HVDC certification and bipolar protection.
Installing an HVDC power supply
For information about installing a PSR3000B-54AHD power supply, see " Installing an AC power
supply ."