Juniper SRX5600, Руководство по оборудованию

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When AC power supplies are installed, the power distribution is shared. All of the power supply power to
all of the components in the services gateway chassis. The power supplies share the load almost equally.
In the low-line (110VAC input) configuration, three power supplies are required to support the services
gateway electrical requirements, and you can install an additional power supply that takes over in case
any of the other three fail. In the high-line (220VAC input) configuration, two power supplies are required
to support the services gateway electrical requirements, and you can install one or two additional power
supplies that will over in case any of the others fail. In the two-PEM high-line configuration, slots PEM0
and PEM1 or PEM2 and PEM3 are used.
When DC power supplies are installed, the power distribution is zoned. The chassis is divided into two
zones numbered 0 and 1. Each zone is powered by one or two power supplies. Two power supplies are
required to support the services gateway electrical requirements, and you can install two additional power
supplies so that each zone has an extra power supply that takes over in case the first power supply fails.
Table 14 on page 49
Table 14: SRX5600 Services Gateway Power Distribution (DC Power Supplies)
Provide Power To: Power Supplies Zone
•
Bottom slots 0 and 1 for SCBs
•
Card slots 0 and 1 for SPCs or interface cards (IOCs, Flex
IOCs, or MPCs)
PEM0 or PEM2 Zone 0
•
Card slots 2 through 5 for SPCs or interface cards (IOCs, Flex
IOCs, or MPCs)
PEM1 or PEM3 Zone 1
SRX5600 Services Gateway AC Power Supply
Each AC power supply consists of one AC appliance inlet, an AC switch, a fan, and LEDs to monitor the
status of the power supply. Figure 15 on page 50 and Figure 16 on page 50 show the power supplies. For
standard-capacity power supplies, each inlet requires a dedicated AC power feed and a dedicated
15 A (250 VAC)circuit breaker. For high-capacity power supplies, each inlet requires a dedicated AC power
feed and a dedicated 16 A @ 100 VAC or 16 A @ 200 VAC circuit breaker, or as required by local code.
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