Ac Power Supply Description - Juniper QFX10008 Hardware Manual

Copyright © 2019, Juniper Networks, Inc.
CAUTION: Do not mix AC and DC power supplies in the same chassis.
This topic includes:
AC Power Supply Description on page 51

AC Power Supply Description

The QFX10000 AC power supplies are 2700 W, hot-insertable, hot-removable,
field-replaceable units (FRUs). You can install up to six power supplies in a QFX10008
in the slots labeled PSU 0 through
In QFX10016, you can install up to 10 power supplies in the slots labeled
. Power supplies install in any available power supply slot.
PSU 9
The AC power supply supports 200–240 VAC. The output is 12 VDC; the output power
is 2700 W.
WARNING: The switch is pluggable type A equipment installed in a
restricted-access location. It has a separate protective earthing terminal on
the chassis that must be connected to earth ground permanently to ground
the chassis adequately and protect the operator from electrical hazards.
CAUTION: Before you begin installing the switch, ensure that a licensed
electrician has attached an appropriate grounding lug to the grounding cable
that you supply. Using a grounding cable with an incorrectly attached lug can
damage the switch.
NOTE: All base configuration QFX10008 switches are shipped with three
power supplies; base configuration for QFX10016 switches are shipped with
five power supplies. Cover panels are installed over the remaining power
supply slots. You can add additional power supplies to base configuration
switches as necessary. To calculate the number of additional power supplies
needed for your specific system, see
QFX10008" on page 125
For details about different switch configurations, see
Configurations" on page 31
Each AC power supply weighs approximately 7 lb (3.2 kg) and has 2 independent 16 A
rated AC inlets on the faceplate. Although each inlet provides sufficient input power to
provide full output, always connect to a dedicated AC power feed to provide redundancy.
Only one power feed is operational at a time.
QFX10000 modular switches employ automatic transfer switch (ATS) technology. The
system provides 2N source redundancy and N+1 power supply redundancy, allowing you
PSU 5 (top to bottom) located in the rear of the chassis.
"Calculating Power Requirements for a
and Calculating Power Requirements for a QFX10016.
and QFX10016 Components and Configurations.
Chapter 1: Overview
through
PSU 0
"QFX10008
51