Juniper SRX 5800, Hardware Manual

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Table 20: DC Power Supply LEDs
Description State Color Label
Power supply is not functioning normally. Check the INPUT OK
LED for more information.
Off Green PWR OK
Power supply is functioning normally. On
DC power supply circuit breaker is turned off. Off Green BREAKER
ON
DC power supply circuit breaker is turned on. On
DC input to the PEM is not present. Off Green INPUT OK
DC input is present, and is connected in correct polarity. On
DC input is present, but connected in reverse polarity. On Amber
SRX5800 Services Gateway High-Capacity DC Power Supply
High-capacity DC power supplies provide a maximum of 4100 W of power each. Two high-capacity DC
power supplies are required, and you can install four high-capacity DC power supplies for redundancy.
Each high-capacity DC power supply has inlets for two DC power feeds. The four power connectors (-48V
and RTN for each of the two inlets) are located behind a clear plastic cover near the bottom of the power
supply. Each DC power inlet you use requires a dedicated DC power feed and a dedicated 80 A circuit
breaker. See Figure 20 on page 61 .
NOTE: The services gateway cannot be powered from standard-capacity and high-capacity DC
power supplies simultaneously. The one exception is during the process of replacing
standard-capacity DC power supplies with high-capacity DC power supplies, when it is permissible
to have both types installed briefly.
NOTE: The high-capacity power supply will operate with only one of its two DC inlets connected
to a DC power feed. However, its DC output will be limited to a maximum of 1700 W. We
recommend that you connect two DC power feeds to each high-capacity DC power supply.
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