PoE/PoE+ Planning and Implementation Guide 2011-09

1-23
Introduction
PoE Capabilities of the HP Products
PoE Chassis Power Supplies
Note HP highly recommends that the two types of power supplies are not mixed in
the same chassis.
For PoE only, the following power supplies can be used:
■ J8712A, which operates at 100-127 volts drawing a maximum of 11.5 amps,
or 200-240 volts drawing a maximum of 5.7 amps, and supplies 273 watts
of PoE power
■ J8713A, which operates at 200-220 volts drawing a maximum of 10 amps,
and supplies 900 watts of PoE power
Using two J8712As, or two J8713As, or a mix of both is supported (however
mixing power supplies is not recommended, see page 13-7 for more
information) and necessary to ensure the switch has both 12V (system power)
and 50V (PoE power) should one power supply fail. See the HP ProCurve
Switch zl Internal Power Supplies Installation Guide, for more information
and specifications on these power supplies.
When considering redundant power, also consider the power source for the
power supplies. Each power supply should be connected to a separate power
source circuit in order to supply complete redundancy. Should one circuit fail,
it would then be possible for the other circuit to continue supplying power to
the second power supply in the switch, keeping the switch running.
There is also an external power supply, the HP ProCurve Switch zl Power
Supply Shelf (J8714A), that can be connected to either the E5400zl switches
or the E8200zl switch for the purpose of adding extra or backup 50V (PoE
power). The zl Power Supply Shelf will not supply any 12V (system power) to
any zl switch, since the switch is provided with 12V redundancy when more
than one power supply is installed in the chassis.
PoE/PoE+ Chassis Power Supply
For PoE or PoE+, the J9306A power supply can be used. This power supply
operates at 110-127V providing 300 watts of PoE/PoE+ power, or 200-240V
providing 900 watts of PoE/PoE+ power. See the HP ProCurve Switch zl
Internal Power Supplies Installation Guide for more information and
specifications on this power supply.
There is also an external power supply, the HP ProCurve Switch zl Power
Supply Shelf (J8714A), that can be connected to either the E5400zl switches
or the E8200zl switches to add extra or backup 54V (PoE/PoE+) power. The
zl Power Supply Shelf will not supply any 12V (system power) to any zl switch,
since the switch is provided with 12V redundancy when more than one power
supply is installed in the chassis.