Juniper EX Series Complete Hardware Guide

DC Power Grounding Requirements and Warning for EX 3200 and EX 4200
Switches
An insulated grounding conductor that is identical in size to the grounded and
ungrounded branch circuit supply conductors but is identifiable by green and yellow
stripes is installed as part of the branch circuit that supplies the unit. The grounding
conductor is a separately derived system at the supply transformer or motor generator
set.
WARNING: When you install the switch, the ground connection must always be
made first and disconnected last.
Waarschuwing Bij de installatie van het toestel moet de aardverbinding altijd het
eerste worden gemaakt en het laatste worden losgemaakt.
Varoitus Laitetta asennettaessa on maahan yhdistäminen aina tehtävä ensiksi ja
maadoituksen irti kytkeminen viimeiseksi.
Attention Lors de l'installation de l'appareil, la mise à la terre doit toujours être
connectée en premier et déconnectée en dernier.
Warnung Der Erdanschluß muß bei der Installation der Einheit immer zuerst
hergestellt und zuletzt abgetrennt werden.
Avvertenza In fase di installazione dell'unità, eseguire sempre per primo il
collegamento a massa e disconnetterlo per ultimo.
Advarsel Når enheten installeres, må jordledningen alltid tilkobles først og frakobles
sist.
Aviso Ao instalar a unidade, a ligação à terra deverá ser sempre a primeira a ser
ligada, e a última a ser desligada.
¡Atención! Al instalar el equipo, conectar la tierra la primera y desconectarla la última.
Varning! Vid installation av enheten måste jordledningen alltid anslutas först och
kopplas bort sist.
Related Topics ■ General Safety Guidelines and Warnings on page 130
■ General Electrical Safety Guidelines on page 153
■ DC Power Electrical Safety Guidelines for EX 3200 and EX 4200
Switches on page 157
■ DC Power Disconnection Warning for EX 3200 and EX 4200 Switches on page 161
■ DC Power Wiring Sequence Warning for EX 3200 and EX 4200
Switches on page 159
■ DC Power Wiring Terminations Warning for EX 3200 and EX 4200
Switches on page 160
158 ■ DC Power Grounding Requirements and Warning for EX 3200 and EX 4200 Switches
Complete Hardware Guide for EX 3200 and EX 4200 Switches

Juniper EX Series Specifications

General

Series	EX Series
Category	Switch
Layer	Layer 2/3
Operating System	Junos OS
Managed	Yes
ACLs	Yes
Port Density	Varies by model
Power over Ethernet (PoE)	Available on some models
Virtual Chassis	Supported on some models
Form Factor	Fixed configuration, Modular
Switching Capacity	Varies by model
Forwarding Rate	Varies by model
Power Supply	Varies by model (AC or DC, redundant options available)
Management	CLI, Web UI, SNMP
Redundancy	Power supply, fan, Virtual Chassis
Latency	Varies by model
Jumbo Frames	Supported
VLAN Support	Yes
MAC Address Table Size	Varies by model
QoS	Yes
Energy Efficiency	EEE (802.3az)
Dimensions	Varies by model
Weight	Varies by model
Operating Temperature	0° to 45° C
Storage Temperature	-40° to 70° C
Humidity	5% to 90% non-condensing
MTBF	Varies by model
Warranty	Limited Lifetime