Installation Guide, Second Edition - HP Integrity cx2620

Figure 1-26 Power Supply Rear View
Fault
DC Out DC In
+ + – –
psrearpnl2
Negative
Positive
WARNING! Ensure that the system is powered off and all power sources are disconnected
from the server prior to removing or installing server hardware unless you are removing or
installing a hot-swappable or hot-pluggable component.
Voltages are present at various locations within the server whenever a dc power source is
connected. This voltage is present even when the main power switch is turned off.
Failure to observe this warning can result in personal injury or damage to equipment.
dc Power Terminal and Wire Connection
WARNING! Always check that the power cable is not connected to a power source before
attempting to connect the power cable to server power supply terminals. Failure to observe this
warning can result in personal injury or damage to equipment.
WARNING! Failure to use the appropriate wire and terminal lugs when connecting dc power
to the server can result in personal injury or damage to equipment.
A dc power terminal block is provided at the rear of each dc power supply. You must use all
four terminals (2+ and 2-). HP recommends a minimum #12 America wire gauge (AWG) or larger
copper conductor be used for connecting dc power. The wire style and insulation type must be
appropriately rated for the application.
CAUTION: Do not use aluminum conductors. Aluminum has a coefficient of expansion that
differs significantly from that of other metals commonly used in power hardware. Because of
this difference, use of aluminum conductors can cause connector hardware to loosen, overheat,
and fail.
The terminal lugs used to connect dc power must be rated to handle the expected load of 15A/PSU.
The width of the lug can be no larger than 0.3 inches (0.762 cm).
Power States
The server has three power states:
Connecting Cables 45