Oracle Acme Packet 4500, Hardware Installation And Maintenance Manual

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SYSTEM INSTALLATION
Acme Packet 4500 Hardware Installation and Maintenance Guide 51
Your equipment rack location must have a local earth ground. This ground can be
either an unpainted spot on the grounded equipment rack frame, or a grounded bus
bar in the equipment room.
Grounding Cable
Installation
The ground terminals are located between the two power supplies on the rear of the
chassis. The Acme Packet 4500 ships with two kep nuts screwed onto the ground
terminals. Use an 11/32” nut driver to remove and install these kep nuts.
This section shows you how to install the grounding cable on your Acme Packet
4500.
Important: Acme Packet 4500 equipment is suitable for installation as part of a
Common Bonding Network (CBN).
Note: The Common Bonding Network (CBN) is a term used for the
connection of building steel, water pipes, cable racks, vertical and
horizontal equalizer conductors, bonding conductors and electrical
metallic raceways within a building, when they are bonded together by
either deliberate or incidental connections. The CBN is also connected
to the building’s grounding electrode system. Connections to the CBN
are usually made from equipment frames to reduce voltage differences
to acceptable levels when current flows through these frames, either
during fault occurrences in the AC or DC power systems, or when
lightning strikes.
To install the grounding cable on the Acme Packet 4500:
1. Unscrew and remove the two kep nuts from the grounding posts located on the
rear of the Acme Packet 4500. Place them aside.
Figure 4 - 66. Kep Nuts on the Power Supply Ground Posts
2. Place the lug on the end of the grounding cable onto the grounding posts in the
orientation shown in the following image.
Figure 4 - 67. Aligning the Ground Cable on the Grounding Posts
3. Screw the two kep nuts onto the grounding post, securing the grounding lug in
place. When attached correctly, the grounding lug fits snugly between the