Grounding A Dc-Powered Multiservice Switch 7420 - Nortel Multiservice Switch 7400 Installation & Maintenance

Grounding a dc-powered Multiservice Switch 7420

Ground Nortel Multiservice Switch equipment to protect both personnel and
equipment.
Prerequisites
• Ensure that you have read and fully understand the grounding
requirements. For more information, see NN10600-170 Nortel
Multiservice Switch 7400 Hardware Description. If you use a terminal in
your installation, you must ground both the outlet that provides power to
the terminal and the cabinet or rack to the same distribution panel.
Procedure steps
Step
1
2
Copyright © 2005, Nortel
- 150 -
Hardware procedures
Action
Connect the green/yellow ground cable (AWG #12 or #14) to the ground
stud located at the bottom left of the rear housing. See the figure
a dc power supply for a Multiservice Switch 7420 (page
This wire must be the only wire secured by the nut provided. If you require
other grounds, attach the wires on top of the first ground nut and add
another nut to secure them.
If the device is in a cabinet, connect the other end of the grounding cable to
a grounding nut on the cabinet. See the figure
grounding points (page 159).
If the device is in a standard 19" rack, connect the other end of the grounding
cable to a ground point on the frame.
If the device is desk-top or vertical mounted, connect the other end of the
grounding cable to the site ground window.
After you ground the device, wear the antistatic wrist strap to protect the
device and processor cards from electrostatic discharge.
Nortel Multiservice Switch 7400
Hardware Installation, Maintenance, and Upgrade
NN10600-175 7.1S1 Standard
PCR7.1 and up October 2005
Multiservice Switch cabinet
--End--
Grounding
151).
Nortel Confidential