Juniper Networks 5000 SERIES manual Power Supplies

Power Supplies

POWER SUPPLIES

The NetScreen-5000 Series can use two kinds of power supplies:

•Alternating Current (AC) Power Supply

•Direct Current (DC) Power Supply

The slots for these power supplies are located in the back of the NetScreen-5200 and on the front of the NetScreen-5400.

Note: You can order a NetScreen-5000 Series that runs on DC power. For DC-powered units, the power supply has a DC terminal block with three sockets.

When two or more power supplies are in service, they share the power load equally. The power supplies are hot-swappable, so you can remove one and replace it without affecting operation. Each power supply is intended to receive power from separate feeds.

When one power supply fails, the other(s) automatically assume the full load and the device logs a system alarm. This alarm is viewable through the WebUI or a console accessing the NetScreen Command Line Interface (CLI). The Alarm LED on the management module glows red in response to any power supply failure.

Warning: You must replace the failed power supply as soon as possible; otherwise, system damage may result. See “Servicing the Device” on page 35 for instructions on how to replace a power supply.

NetScreen-5000 Series 5