Juniper SRX 5800, Hardware Manual

Page: 183 / 536

For the power consumption specifications of specific SRX5800 services gateway cards, see the SRX5400,
SRX5600, and SRX5800 Services Gateway Card Guide at www.juniper.net/documentation/ .
2. Evaluate the power budget, including the budget for each zone, if applicable. In this step, we check the
required power against the maximum output power of available power supply options.
Table 43 on page 184 lists the power supplies, their maximum output power, and unused power (or a
power deficit).
Table 43: Calculating Power Budget for SRX5800 Services Gateway with SCB1 and RE1
Zone 1 Unused
Power
2
Zone 0
Unused
Power
1
Nonzoned
Unused Power
Maximum
Output Power
for System
Maximum
Output Power
of Power
Supply Power Supply
– – Power exceeded
(non-zoned; 5100
W - 8070 W =
-2970 W power
exceeded)
5100 W 1700 W SRX5800 AC
standard-capacity
Power exceeded
4100-4080=20 W
Power
exceeded
4100-3990=110
W
– 3400 W (one
feed)
8200 W (two
feeds)
1700 W (one
feed)
4100 W (two
feeds)
SRX5800 AC
high-capacity
Power exceeded Power
exceeded
– 5600 W 2800 W SRX5800 DC
normal-capacity
Power exceeded
4100-4080=20 W
Power
exceeded
4100-3990=110
W
– 3400 W (one
feed)
8200 W (two
feeds)
1700 W (one
feed)
4100 W (two
feeds)
SRX5800 DC
high-capacity
1
For this configuration, output power is 3990 W.
2
For this configuration, output power is 4080 W.
3. Calculate input power. In this step, the input power requirements for the example configuration are
calculated. To do this, divide the total output requirement by the efficiency of the power supply as
shown in Table 44 on page 186 .
184