Power supplies – Allied Telesis AT-SBx31CFC960 User Manual
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SwitchBlade x3112 Chassis Switch and AT-SBx31CFC960 Card Installation Guide
27
Power Supplies
Here are the three power supplies for the chassis:
AT-SBxPWRSYS1 AC Power Supply: This module supports all the
hardware components in the chassis, except for the PoE feature
on the ports on the AT-SBx31GP24 Line Cards. A single power
supply can support a fully populated chassis, but you may install
two power supplies for power redundancy.
AT-SBxPWRSYS1 DC Power Supply: This module has the same
function as the AC version, but is intended for DC power
applications.
AT-SBxPWRPOE1 Power Supply: This module provides the PoE
power for the ports on the AT-SBx31GP24 PoE Line Cards. The
module provides 1200 watts of power for PoE. You may install two
PoE power supplies in the chassis, for a total of 2,400 watts of
power.
See Figure 2, “Power Supply Units” on page 20 for illustrations of the
power supplies.
Here are the power supply guidelines:
Power supply modules are not included with the chassis and must
be purchased separately.
The AT-SBxPWRSYS1 AC and DC Power Supplies are hot
swappable. If the chassis has two system power supplies and one
of them fails, you do not have to power off the operational module
to replace the failed unit.
The AT-SBxPWRPOE1 AC Power Supply is also hot swappable.
The AT-SBxPWRSYS1 AC and DC Power Supplies are installed in
slots C and D on the front panel. If you are installing just one power
supply, you may install it in either slot. See Figure 2 on page 20.
AT-SBxPWRPOE1 Power Supplies are installed in slots A and B. If
you are installing just one PoE power supply, you may install it in
either slot.
The total number of powered devices the chassis can support on
the ports on AT-SBx31GP24 PoE Line Cards depends on the
number of AT-SBxPWRPOE1 Power Supplies in the chassis and
the power requirements of the devices. For instance, a chassis can
support 40 ports of Class 4, PoE+ (IEEE 802.3at) powered devices
with one power supply or 80 ports with two power supplies. For
further information, refer to “Power Budgeting” on page 60.