Juniper SRX 5800, Руководство по оборудованию

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2
For this configuration, output power is 4267 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 52 on page 194 .
NOTE: Normal-capacity AC and DC power supplies are not included in the following
table, because their power budget was exceeded in the sample configuration.
Table 52: Calculating Input Power for SRX5800 Services Gateway with SCB3, IOC3, and RE2
Input Power Requirement
Power Supply
Efficiency
1
Power Supply
Zone 0: 4177/0.88= 4764 W ~88 % SRX5800 AC high-capacity
Zone 1: 4267/0.88= 4849 W
Zone 0: 4177/0.86= 4857 W 86 % SRX5800 DC high-capacity
Zone 1: 4267/0.86= 4962 W
1
These values are at full load and nominal voltage.
4. Calculate thermal output (BTUs) for the system. To calculate this value, add the total input power
requirement (in watts) for the two zones together and multiply the sum by 3.41 as shown in
Table 53 on page 194 .
Table 53: Calculating Thermal Output for SRX5800 Services Gateway with SCB3, IOC3, and RE2
Thermal Output (BTUs per hour) Power Supply
(4764 + 4849) * 3.41 = 32,780 BTU/hr SRX5800 AC high-capacity
(4857 + 4962) * 3.41 = 33,482 BTU/hr SRX5800 DC high-capacity
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