Fan Tray Power Consumption; System Power Consumption; Heat Dissipation - HP A10500 Series Installation Manual

Model
LSU1TGX4EB0
LSU1FAB04A0
LSU1FAB08A0

Fan tray power consumption

The switch uses fans with the automatic speed adjustment function. The fan speed is automatically
adjusted based on the heat dissipation condition of the switch. The power consumed by a fan tray
depends on the fan speed.
Table 24 Fan tray power consumption
Model
A10504
A10508
A10508-V

System power consumption

The system power consumption of the switch depends on the type and number of cards and the fan tray
power consumption.
The minimum system power consumption is the total static power consumption of all cards plus the
•
minimum fan tray power consumption. For example, for an A10508 switch that has two
LSU1SUPA0 MPUs, two LSU1TGX4EB0 LPUs, two LSU1FAB08A0 switching fabric modules, and
one fan tray, the minimum system power consumption of the switch is 2 × 38 + 2 × 53 + 2 × 68 +
11 = 329 W.
The maximum system power consumption is the total dynamic power consumption of all cards plus
•
the maximum fan tray power consumption. For example, for an A10508 switch that has two
LSU1SUPA0 MPUs, two LSU1TGX4EB0 LPUs, two LSU1FAB08A0 switching fabric modules, and
one fan tray, the maximum system power consumption of the switch is 2 × 50 + 2 × 80 + 2 × 85
+234 = 664 W.

Heat dissipation

The heat dissipation of the switch depends on power consumption. To calculate heat dissipation of the
switch, assume 90% power consumption is converted to heat, and the efficiency of the power supply is
90%. Heat dissipation/hour of the switch is 0.9 × (total power consumption of the cards plus power
consumption of the fan tray)/0.9 × 3.4121.
Minimum static power
consumption
53 W
41 W
68 W
Table 24 shows the power consumption of different fan trays.
Minimum fan tray power
consumption
12 W
11 W
13 W
58
Maximum dynamic power
consumption
80 W
50 W
85 W
Maximum fan tray power
consumption
240 W
234 W
329 W