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Installing a power supply unit
The procedure for installing AC and DC PSUs is identical.
Prerequisites
1. Follow the safety guidelines listed in
2. For systems that support redundant PSU, ensure that both the PSUs are of the same type and have the same maximum
output power.
NOTE:
The maximum output power (shown in watts) is listed on the PSU label.
Steps
Slide the PSU into the system until the PSU is fully seated and the release latch snaps into place.
Figure 72. Installing a power supply unit
Next steps
1. If you have unlatched the cable management arm, relatch it. For information about the cable management arm, see the
system's rack documentation at Dell.com/XCSeriesmanuals.
2. Connect the power cable to the PSU, and plug the cable into a power outlet.
CAUTION:
When connecting the power cable to the PSU, secure the cable to the PSU with the strap.
NOTE:
When installing, hot swapping, or hot adding a new PSU, wait for 15 seconds for the system to recognize the
PSU and determine its status. The PSU redundancy may not occur until discovery is complete. Wait until the new PSU is
discovered and enabled before you remove the other PSU. The PSU status indicator turns green to signify that the PSU
is functioning properly.
Wiring instructions for a DC power supply unit
Your system supports up to two –(48–60) V DC power supply units (PSUs).
WARNING:
For equipment using –(48–60) V DC power supply units (PSUs), a qualified electrician must perform
all connections to DC power and to safety grounds. Do not attempt connecting to DC power or installing
grounds yourself. All electrical wiring must comply with applicable local or national codes and practices. Damage
due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow all safety
instructions that came with the product.
Safety instructions
on page 55.
Installing and removing system components
109
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