Rack Requirements For The Ptx5000 Packet Transport Router; Rack Size And Strength - Juniper PTX5000 Hardware Manual

Table 52: Site Electrical Wiring Guidelines (continued)
Site Wiring Factor
Electromagnetic
compatibility
Related
Documentation

Rack Requirements for the PTX5000 Packet Transport Router

Rack Size and Strength

Copyright © 2017, Juniper Networks, Inc.
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 device
Electrical hazards as a result of power surges conducted over the lines into the equipment
General Safety Guidelines and Warnings on page 581
General Electrical Safety Guidelines and Warnings on page 609
Prevention of Electrostatic Discharge Damage on page 611
Rack Size and Strength on page 119
Spacing of Mounting Bracket and Flange Holes on page 121
Connection to Building Structure on page 121
The PTX5000 Packet Transport Router is designed for installation in a rack that complies
with either of the following standards:
A 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document
number EIA-310-D) published by the Electronics Components Industry Association
(
http://www.ecianow.org/
A 600-mm rack as defined in the four-part Equipment Engineering (EE); European
telecommunications standard for equipment practice (document numbers ETS 300
119-1 through 119-4) published by the European Telecommunications Standards Institute
( http://www.etsi.org ). The horizontal spacing between the rails in a rack that complies
with this standard is usually wider than the mounting brackets, which measure 19 in.
(48.3 cm) from outer edge to outer edge. Use approved wing devices to narrow the
opening between the rails as required.
A 23-in. rack using appropriate 23-in. to 19-in. rack adapters and an appropriate
installation shelf which supports the chassis at the correct vertical position to properly
line up the rack mount holes. Juniper Networks does not supply this hardware, but
consideration for the size and weight of the chassis is important for a safe installation.
Juniper recommends the use of single-sided panel adapters of at least 10 U in height,
using as many as needed to fully overlap the chassis rack mount bracket for this type
of installation.
The rack rails must be spaced widely enough to accommodate the chassis's external
dimensions: 62.5 in. (158.8 cm) high, 33.1 in. (84.1 cm) deep, and 17.5 in. (44.5 cm) wide.
Chapter 8: Planning and Preparing the Site
).
119