H3C Technologies H3C S7500E Series Switches - Manual (Page 92)

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Replacement procedures
CAUTION:
When replacing pluggable modules when the switch is running, notice safety with electricity.
All FRUs of the S7500E series switches are hot swappable. You can replace any of them when the switch
is running.
Replacing a power module
WARNING!
•
Strictly follow the procedures shown in Figure 47 and Figure 48 to replace a power module to avoid
device or bodily injury.
• An AC power module and a DC power module cannot be installed on the same S7500E switch, and
power modules with different models cannot be installed on the same S7500E switch. When you use
two power modules to supply power, and the power modules to be replaced are of different models,
power off the switch before replacement to avoid damage to the switch.
• When you use two power modules to supply power to the switch, make sure each power module has a
separate circuit breaker. Before replacing a power module, turn off the circuit breaker on the power
module.
Replace a power module in the following cases:
1. The power module is faulty.
2. The power of the current power module cannot satisfy the power requirements of the switch.
{
The power module does not support PoE, or the PoE output power of the power module cannot
satisfy the PoE power supply requirements. To ensure normal operation of the connected PDs,
use a power module with a higher power. For power module ordering information, see
"Appendix B Pluggable module ordering guide." For how to calculate PoE power consumption,
see "Appendix A Hardware specifications."
{
Select a 3-RU high power module for the S7503E, S7506E-S, S7506E, and S7506E-V. You can
also use a PSR650-A/PSR650-D power module (1 RU high) together with a PWR-SPA power
adapter to supply power to the switch when the system power consumption is no higher than
650 W. When the power of the power module cannot satisfy the system power consumption of
the switch or PoE power supply is required, replace the power module with a 3-RU high power
module, and remove the power adapter. For more information about power module ordering,
see "Appendix B Pluggable module ordering guide."
The system power consumption is the total dynamic power consumption of all SRPUs plus the
total dynamic power consumption of all the LPUs plus the maximum power consumption of fans.
For more information, see "Appendix A Hardware specifications."
Figure 47 Power module removal flow