Module Power Consumption And Total Power Consumption; Total Power Consumption - HP 7500 Series Installation Manual

Module power consumption and total power
consumption

Total power consumption

The total power consumption is the system power consumption plus PoE power consumption.
The system power consumption is the sum of the power consumption of all running cards and the
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power consumption of all fans.
The PoE power consumption is the sum of the power consumption of all PDs connected to the switch.
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Card power consumption
The power consumption of the cards of the 7500 Switch Series depends on the card model and
state. Table 39
The static power consumption of a card refers to the power consumed by the card when the card is
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running but all ports on the card are down and when no transceiver module is available on the fiber
interface of the card.
• The dynamic power consumption of a card refers to the power consumed by the card when all the
ports on the card are link up and send broadcasts.
Fan assembly power consumption
The 7500 Switch Series except the 7503-S uses fan assemblies that can automatically adapt the fan
rotating speed to the heat output. The power consumed by a fan assembly depends on the fan
speed. Table 40
System power consumption
The system power consumption of an HP 7500 switch depends on the type and number of cards and the
fan assembly power consumption.
• The minimum system power consumption is the total static power consumption of all cards plus the
minimum fan assembly power consumption. For example, for an HP 7503 switch that has two
LSQ1SRPB0 main processing units (MPUs), three LSQ1GV48SC0 line processing units (LPUs), and
one fan assembly, the minimum system power consumption of the switch is 2 × 42 + 3 × 60 + 15.5
= 279.5 W.
The maximum system power consumption is the total dynamic power consumption of all cards plus
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the maximum fan assembly power consumption. For example, for an HP 7503 switch that has two
LSQ1SRPB0 MPUs, three LSQ1GV48SC0 LPUs, and one fan assembly, the maximum system power
consumption of the switch is 2 × 50 + 3 × 90 +27.5 = 397.5 W.
PoE power consumption
The maximum PoE power consumption depends on the type and number of PoE cards, PoE power supply
mode supported by each PoE card, and the number of ports that support PoE. For example, if an HP
7503 switch has one LSQ1GV40PSC0, two LSQ1GV24PSC, and the MPU does not support PoE, the
maximum PoE power consumption of the switch is 40 × 15.4 + 2 × 24 × 15.4 = 1355.2 W.
shows the power consumption for different card models.
shows the power consumption of different fan assemblies.
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