Nortel Passport 7400, Установка оборудования, техническое обслуживание и устранение неисправностей, Страница: 194 / 438

194 Chapter 37 Hardware procedures
241-7401-240 5.2S1
Grounding a dc-powered 5-slot Passport switch
Ground a switch to protect both personnel and equipment.
Prerequisites
• Ensure that you have read and fully understand the grounding
requirements for your switch. For more information, see 241-7401-200
Passport 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.
• The ac power cord grounds ac-powered 5-slot Passport switches so you
do not need to perform a separate grounding procedure.
Procedure steps
1 Connect the green/yellow ground lead to the ground stud located on the
upper ground strip of rear housing. See the figure “Grounding a 5-slot
Passport switch dc power supply” (page 195).
This wire must be the only wire secured by the nut provided. If you require
other grounds, attach the wires above the first ground nut and add another
nut to secure them.
2 If the switch is in a Passport cabinet, connect the other end of the
grounding lead to a grounding nut on the cabinet. See the figure “Passport
cabinet grounding points” (page 197).
If the switch is in a standard 19” rack, connect the other end of the
grounding lead to a ground point on the frame.
If the switch is desk-top mounted, connect the other end of the grounding
lead to the site ground window.
After you ground your switch, wear the antistatic wrist strap to protect the
switch and processor cards from electrostatic discharge.