Environmental Requirements And Specifications For Ex Series Switches - Juniper EX8208 Complete Hardware Manual

Table 38: Site Electrical Wiring Guidelines (continued)
Site Wiring Factor
Electromagnetic compatibility
Related
Documentation

Environmental Requirements and Specifications for EX Series Switches

Copyright © 2010, Juniper Networks, Inc.
General Safety Guidelines and Warnings for EX Series Switches on page 267
General Electrical Safety Guidelines and Warnings for EX Series Switches on page 297
Prevention of Electrostatic Discharge Damage on EX Series Switches on page 298
Power Supply in EX2200 Switches
Power Supply in EX3200 Switches
Power Supply in EX4200 Switches
AC Power Supply in EX4500 Switches
DC Power Supply in EX4500 Switches
AC Power Supply in an EX8200 Switch on page 41
DC Power Supply in an EX8200 Switch on page 49
The switch must be installed in a rack or cabinet housed in a dry, clean, well-ventilated,
and temperature-controlled environment.
Ensure that these environmental guidelines are followed:
The site must be as dust-free as possible, because dust can clog air intake vents and
filters, reducing the efficiency of the switch cooling system.
Maintain ambient airflow for normal switch operation. If the airflow is blocked or
restricted, or if the intake air is too warm, the switch might overheat, leading to the
switch temperature monitor shutting down the switch to protect the hardware
components.
Table 39 on page 90 provides the required environmental conditions for normal switch
operation.
Guidelines
If your site is susceptible to problems with electromagnetic
compatibility (EMC), particularly from lightning or radio
transmitters, seek expert advice.
Some of the problems caused by strong sources of
electromagnetic interference (EMI) are:
Destruction of the signal drivers and receivers in the switch
Electrical hazards as a result of power surges conducted
over the lines into the equipment
Chapter 4: Site Preparation
89