Juniper-networks J4350 Manual do Utilizador descarregar pdf (Página 41)

System Overview

J4350 Power System

The J4350 Services Router uses either AC or DC power. The autosensing power

supply (see Fi

gure 2 or Figure 4) distributes the different output voltages to

the router c omponents according to their voltage requirements.

The power supply is fixed in the chassis, and is not field-replaceable. The AC power

supply has a single AC applia nc e inle t that requires a dedicated AC power feed. The

DC power supp

ly has a terminal b lock tha t provides a si ngle D C input (–48 VDC

andreturn)andrequiresadedicated15A(–48VDC)circuitbreaker.

The J4350 AC-powered chassis has a power switch and does n ot in clude a power LED.

The J4350 DC-powered chassis includes a power supply LED located to the upper

right of the power supply connector. Table 11 describes the power supply L ED.

Table 11: Power Supply LED

State Description

Off Nopowerisflowingtothepowersupply.

Green

Power suppl

y is connected and power is flowing.

Yellow Power supply is connected, but the router is not powered on.

For information abou t site power preparations, see “Power Guideline s,

Requirements, and Specifica tio ns” on pa ge 74. For information about connecting

the router to p ower and ground, see “Connecting Power” on page 86.

J6350 Power System

TheJ6350ServicesRouteruseseitherACorDCpower.Youcaninstalloneortwo

autosensing, load-sha rin g power supplies at the bottom rear of the chassis, as shown

in Figure 3 or Figure 5. The power supplies distribute the different output voltages to

the router components, depending on their voltage requirements. Wh en two p ower

supplies are installed and operational, they automatically share the electrical load.

For full redundancy, two power supplies are required. If a power supply stops

functioning for any reason, the second power supply instantly begins providing

all the power the router needs for normal functioning. It can provide full power

indefinitely. Power supplies on the J6350 Services Router can be hot-swapped.

Each power supply has an LED located to the upper right of the power supply

connector. Table 11 describes the power supply LED.

For information abou t site power preparations, see “Power Guideline s,

Requirements, and Specifica tio ns” on pa ge 74. For information about connecting

the router to p ower and ground, see “Connecting Power” on page 86.

Power supplies on J6350 Services Routers are hot-removable and hot-insertable.

You can remove and replace a redundant power supply without powering down the

J4350 and J6350 Services Router Hardware Features 21

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Juniper-networks J4350 Manual do Utilizador Página 41