Juniper SRX650 Hardware Guide

Table 13: Site Electrical Wiring Guidelines for the SRX650 Services Gateway (continued)
GuidelineSite Wiring Factor
To reduce or eliminate the emission of RFI from your site wiring:
•
Use twisted-pair cable with a good distribution of grounding conductors.
•
Use a high-quality twisted-pair cable with one ground conductor for
each data signal 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)
WARNING: 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 SRX650 Services Gateway on page 41•
• Maintaining the SRX650 Services Gateway Power Supply on page 124
• SRX650 Services Gateway Power Requirements on page 58
• SRX650 Services Gateway Environmental Specifications on page 42
SRX650 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 © 2018, Juniper Networks, Inc.54
SRX650 Services Gateway Hardware Guide

Juniper SRX650 Specifications

General

Brand	Juniper
Model	SRX650
Category	Gateway
Language	English