Juniper SRX550 Hardware Guide

Table 28: Site Electrical Wiring Guidelines for the SRX550 High Memory
Services Gateway (continued)
GuidelineSite Wiring Factor
To reduce or eliminate the emission of RFI from your site wiring:
•
Use twisted-pair cablewith a good distribution of grounding conductors.
•
Use a high-quality twisted-pair cable with one ground conductor for
each datasignal when applicable, if you must exceed the recommended
distances.
Radio frequency
interference (RFI)
Provide a properly grounded and shielded environment and use electrical
surge-suppression devices.
Strong sources of electromagnetic interference (EMI) can cause the
following damage:
•
Destroy the signal drivers and receivers in the device.
•
Conduct power surges over the lines into the equipment, resulting in an
electrical hazard.
TIP: If your site is susceptible to problems with EMC, particularly from
lightning or radio transmitters, you might want to seek expert advice.
Electromagnetic
compatibility (EMC)
CAUTION: Some ports are designed for use as intrabuilding interfaces only
(Type 2 or Type 4 ports, the battery return connection is to be treated as an
Isolated DC return (that is, DC-I), as defined in GR-1089-CORE) and require
isolation from the exposed OSP cabling. To comply the NEBS requirements
and protect against lightening surges and commercial power disturbances,
the intrabuilding port(s) of the device MUST NOT be metallically connected
to interfaces that connect to the OSP or its wiring. The intrabuilding port(s)
of the device is suitable for connection to intrabuilding or unexposed wiring
or cabling only. The addition of primary protectors is not sufficient protection
to connect these interfaces metallically to OSP wiring.
Related
Documentation
General Site Installation Guidelines for the SRX550 High Memory Services Gateway
on page 49
•
• Maintaining the SRX550 High Memory Services Gateway Power Supply on page 144
• SRX550 High Memory Services Gateway Environmental Specifications on page 50
SRX550 High Memory Services Gateway Supported AC Power Cords
WARNING: The AC power cord for the services gateway is intended for use
with the services gateway only and not for any other use.
Copyright © 2016, Juniper Networks, Inc.64
SRX550 High Memory Services Gateway Hardware Guide

Juniper SRX550 Specifications

General

Brand	Juniper
Model	SRX550
Category	Gateway
Language	English