Juniper SRX 5600 Hardware Manual page 215

Table 33: Component Power Requirements (continued)
Component
SPC—Generalized maximum value
Use the information in Table 32 on page 188 and Table 33 on page 188 to calculate
power consumption for various hardware configurations, input current from a different
source voltage, and thermal output, as shown in the following examples. These
examples use generalized values per IOC. Typical power consumption for DC-powered
devices:
Minimum DC-powered configuration:
Base device (nonredundant) + 1 SCB + 1 Routing Engine + 1 IOC +
1 SPC—Generalized typical value =
2.8 A + 3.1 A + 1.9 A + 6.5 A +4.4 A = 18.7 A @ 48 VDC =898 W
Maximum DC-powered configuration:
Base device (redundant) + fan tray at full speed + 2 SCBs + 1 Routing Engine +
5 IOCs + 1 SPC—Generalized maximum value =
3.8 A + 0.6 A + 2(3.1) A + 1.9 A + 5(7.6 A) + 7.3 A=
3.8 A + 0.6 A + 6.2 A + 1.9 A + 38 A + 7.3 A= 57.8 A @ 48 VDC = 2774 W DC
Input current from a DC source other than –48 VDC (based on maximum
configuration; applies to DC power supply only):
( 54 VDC input) * (input current X) = ( 48 VDC input) * (input current Y)
54 * X = 48 * 57.8 A
X = (48 * 57.8 A)/54 = 51.4 A
Thermal output for maximally configured DC-powered services gateway:
Watts DC * 3.41= BTU/hr
2774 W * 3.41 = 9459 BTU/hr
Appendix D: Power Guidelines, Requirements, and Specifications
Power Requirement (Watts)
351 W
DC Power Specifications and Requirements
Current
Requirement
(Amps @
48 VDC)
7.3 A
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