Table 4: Power Budgets Of The At-Pwr800 Power Supply; Table 5: Power Budgets Of The At-Pwr1200 Power Supply - Allied Telesis AlliedWare Plus Installation Manual

A PoE switch with two AT-PWR800 or AT-PWR1200 Power Supplies has
either redundant PoE power or nearly double the power budget. This is
controlled by the power boost feature, which has a status of either enabled
or disabled. When the power boost feature is enabled, a PoE switch with
two power supplies actively uses the PoE power from both supplies to
increase its available power budget. When the feature is disabled, the
switch uses the PoE power of only one of its power supplies and keeps the
other in reserve in case the primary power supply should fail or lose
power. The default setting of power boost is disabled.
As an example, assume that a PoE switch has one AT-PWR1200 Power
Supply, which has a power budget of 740W for powered devices. Thus,
the switch would have a total power budget of 740W. Now assume the
switch has two AT-PWR1200 Power Supplies. When the power boost
mode is enabled, the switch uses the PoE power from both supplies, for a
total power budget of 1440W. When the power boost mode is disabled, the
switch has an active PoE power of 740W and a redundant budget of the
same amount. The switch activates the redundant power budget only if the
power supply providing the active power budget fails or loses power.
Table 4 lists the power budgets for the switch with one or two AT-PWR800
Power Supplies and the power boost mode.
Table 4. Power Budgets of the AT-PWR800 Power Supply
Number of
Power State of Power
Supplies in the
Switch
One NA
Two Enabled
Two Disabled
Table 5 lists the power budgets for the switch with one or two AT-
PWR1200 Power Supplies and the power boost mode.
Table 5. Power Budgets of the AT-PWR1200 Power Supply
Number of
Power State of Power
Supplies in the
Switch
One NA
Two Enabled
Two Disabled
x930 Series Installation Guide for Virtual Chassis Stacking
Power Budget
Boost of the Switch
380 watts
740 watts
380 watts
Power Budget
Boost of the Switch
740 watts
1440 watts
740 watts
Redundant
Power
0 watts
0 watts
380 watts
Redundant
Power
0 watts
0 watts
740 watts
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