Installation guide

Power cords
The power cords available for these switches are sized
for the increased current that can be drawn to meet
the needs of PoE. As a result, they are uncommon and
it is recommended to have a few spares on hand. For
more details, see Part 3 for the listing of power cords.
Using power cords not rated to carry the current
drawn by a device could create a fire hazard. Use
the proper power cord listed for your HP ProCurve
equipment. Elevated operational temperatures reduce
the amount of current that power cords can safely
provide. The cords listed in Part 3 have been certified
by HP ProCurve Networking to be adequate for the
rated operating temperature range of our products,
and use of any other power cord is not supported by
HP ProCurve.
HP ProCurve 620 Redundant/
External Power Supply (RPS/EPS)
The HP ProCurve 620 Redundant/External Power
Supply (J8696A) provides RPS and EPS power
individually to two HP ProCurve 3500 series switches
or RPS to two HP ProCurve 6200yl or HP ProCurve
2900 series switches. The HP ProCurve 620 RPS/EPS
does not support the HP ProCurve Switch 8200zl or
5400zl series.
RPS power: Connecting the RPS provides full
redundancy for the connected switch’s system power.
EPS power: The HP ProCurve 620 RPS/EPS provides
398 W of additional PoE power to each of two
connected HP ProCurve 3500 series switches. For an
HP ProCurve Switch 3500yl-24G-PWR or HP ProCurve
3500-24-PoE, the internal power supply can power
all 24 ports at 15.4 W for PoE. The additional power
available from the HP ProCurve 620 RPS/EPS provides
full redundancy for the PoE power.
If the HP ProCurve 620 RPS/EPS is connected to a
HP ProCurve Switch 3500yl-48G-PWR or HP ProCurve
Switch 3500-48-PoE, it allows all 48 ports to run at
the full 15.4 W simultaneously but with no PoE power
redundancy. The additional PoE power from the
HP ProCurve 620 RPS/EPS could be used to provide
full PoE power redundancy for 24 of the 48 ports, if
that is needed, rather than additional power for the
extra ports.
HP ProCurve Switch zl Power
Supply Shelf
The HP ProCurve Switch zl power supply shelf
(J8714A) provides two additional power supply
bays for connection to one or two zl switches. By
using the power supply shelf to provide extra EPS
(PoE) power to the zl switch, the extra PoE power can
be used to power additional PDs beyond what can
be powered by the internal switch supplies or, more
commonly, to provide for larger redundant PoE power
environments, such as large VoIP installations.
The power supply shelf accepts the same power
supplies available for the zl switches and connects
to the switches via 2 m EPS cables included with the
power supply shelf. The extra PoE power available
via the power supply shelf is determined by the
power supplies installed in the Shelf. See the
HP ProCurve Switch zl Power Supply Shelf data
sheet for more details.
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