Juniper QFabric QFX3000-G Hardware Documentation page 516

QFX3000-G QFabric System Hardware Documentation
Related
Documentation
Connecting DC Power to a QFX3500, QFX3600, or QFX3600-I Device
466
AC Power Supply for a QFX3500, QFX3600, or QFX3600-I Device on page 110
AC Power Supply LEDs on a QFX3500, QFX3600, or QFX3600-I Device on page 753
The QFX3500, QFX3600, and QFX3600-I devices are shipped from the factory with two
650 W power supplies pre-installed. Each power supply is a hot-removable and
hot-insertable field-replaceable unit (FRU) when the second power supply is installed
and running. You can install replacement power supplies without powering off the device
or disrupting the switching function.
WARNING: DC-powered QFX3500, QFX3600 and QFX3600-I devices are
intended for installation only in a restricted access location.
NOTE: The battery returns of the DC power supply should be connected as
an isolated DC return (DC-I).
Before you begin connecting DC power to the device:
Ensure that you have taken the necessary precautions to prevent electrostatic discharge
(ESD) damage (see "Prevention of Electrostatic Discharge Damage" on page
Ensure that you have connected the device chassis to earth ground.
CAUTION: Before you connect power to the device, a licensed electrician
must attach a cable lug to the grounding and power cables that you supply.
A cable with an incorrectly attached lug can damage the device (for
example, by causing a short circuit).
To meet safety and electromagnetic interference (EMI) requirements and
to ensure proper operation, you must connect the chassis to earth ground
before you connect it to power. For installations that require a separate
grounding conductor to the chassis, use the protective earthing terminal
on the device chassis to connect to the earth ground. For instructions on
connecting earth ground, see
Device" on page 480
Devices" on page
Install the power supply in the chassis. For instructions on installing a power supply in
a QFX3500 device, see "Installing a Power Supply in a QFX3500 Device" on page
For instructions on installing a power supply in a QFX3600 or QFX3600-I device, see
"Installing a Power Supply in a QFX3600 or QFX3600-I Device" on page 660
"Connecting Earth Ground to a QFX3500
or "Connecting Earth Ground to QFX3600 or QFX3600-I
462.
Copyright © 2018, Juniper Networks, Inc.
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