Dc Power Supply Specifications For Ex9214 Switches; Table 46: Dc Power Supply Specifications For An Ex9214 Switch - Juniper EX9214 Hardware Manual

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DC Power Supply Specifications for EX9214 Switches

Copyright © 2017, Juniper Networks, Inc.
NOTE: In North America, AC power cords must not exceed 4.5 m
(approximately 14.75 ft) in length, to comply with National Electrical Code
(NEC) Sections 400-8 (NFPA 75, 5-2.2) and 210-52, and Canadian Electrical
Code (CEC) Section 4-010(3). You can order AC power cords that are in
compliance.
WARNING: The switch is pluggable type A equipment installed in a
restricted-access location. It has a separate protective earthing terminal
(sized for UNC 1/4-20 ground lugs) provided on the chassis in addition to the
grounding pin of the power supply cord. This separate protective earthing
terminal must be permanently connected to earth.
CAUTION: Power cords must not block access to switch components. We
recommend that you route all AC power cord cables through the power cord
tray provided with the switch.
AC Power Supply in an EX9214 Switch on page 45
AC Power Electrical Safety Guidelines on page 330
AC Power Disconnection Warning on page 331
General Electrical Safety Guidelines and Warnings on page 327
Connecting AC Power to an EX9214 Switch on page 154
Connecting Earth Ground to an EX Series Switch on page 147
Table 46 on page 99 lists the DC power supply specifications for EX9214 switches.

Table 46: DC Power Supply Specifications for an EX9214 Switch

Item
Maximum output power
DC input voltage
DC nominal input current rating @ 48
VDC
Chapter 7: Planning Power Requirements
Specifications
4100 W in two-feed mode
1700 W in one-feed mode
Nominal operating range: –48 VDC
Operating voltage range: –40 VDC to –72 VDC
104 A for both feeds (54 A and 50 A per feed) in
two-feed mode
42 A in one-feed mode
99