Srx550 Hm Power System; Srx550 High Memory Services Gateway Power Supply - Juniper SRX550 Hardware Manual

performance or shutting down some of the chassis components. However, if the ambient maximum
temperature specification exceeds the warning limit and the system cannot be adequately cooled, then
the services gateway shuts down the system and hardware components completely.

SRX550 HM Power System

IN THIS SECTION

SRX550 High Memory Services Gateway Power Supply | 40

SRX550 High Memory Services Gateway Supported AC Power Cords | 43
SRX550 High Memory Services Gateway AC Power Supply Electrical Specifications | 44
SRX550 High Memory Services Gateway DC Power Cable Specifications | 45
SRX550 High Memory Services Gateway DC Power Supply Electrical Specifications | 45
SRX550 High Memory Services Gateway Power Supply
The SRX550 High Memory Services Gateway uses either one AC or one DC power supply unit (PSU). The
services gateway is equipped with one AC power supply (see
redundancy. A second PSU is optional (sold separately) for power redundancy.
A second PSU can be used to meet power requirements exceeding the wattage provided by a single PSU
(a nonredundant configuration). The two power supplies, either both AC or both DC, will load-share and
provide power redundancy to the services gateway, increasing its availability and reliability. If one power
supply fails or is removed, the other power supply redistributes the electrical load without interruption.
The services gateway reassesses the power required to support its configuration and issues errors if the
available power is insufficient.
CAUTION:
because this can damage the device.
All power supplies are hot-swappable and support single or dual redundant power supply versions. Each
power supply is cooled by the system's fans.
Figure 7 on page 41 shows the DC power supply.
Do not mix AC and DC power supplies within the same services gateway
Figure 6 on page 41) for non-power
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