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Grounding a dc-powered Multiservice Switch 7460
Ground Nortel Multiservice Switch equipment to protect both personnel and
equipment.
Prerequisites
•
Ensure that you have read and fully understood the grounding
requirements, as described in 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.
•
The remote alarm panel and any termination panels (sparing panel or
fanout panel) must share the same site ground window as the device.
•
Have an antistatic wrist strap available so that it can be worn to protect
processor cards as soon as the device is grounded.
Procedure steps
Step
1
2
3
Copyright © 2005, Nortel
- 154 -
Hardware procedures
Action
Connect the green/yellow ground lead (NTBP63) to the stud located beside
the power input terminal block on the rear of the shelf assembly. The nut on
the stud is a #8-32. See the figure
Switch 7460 (page
154).
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.
If the device is in a cabinet, connect the other end of the grounding lead to
a grounding nut on the cabinet. See the figure
Switch 7460 to the site ground window (page
If the device is or will be in a standard 19" rack, connect the other end of the
grounding lead to a ground point on the rack provided the rack is also
grounded to the site's dc ground window. Ensure that bare metal contacts
the lug of the grounding cable.
Dress the cable with tie-wraps to keep it away from servicing equipment, for
example, termination panels that are mounted at the rear of a cabinet.
Nortel Multiservice Switch 7400
Hardware Installation, Maintenance, and Upgrade
NN10600-175 7.1S1 Standard
PCR7.1 and up October 2005
Grounding a dc-powered Multiservice
Grounding a Multiservice
155).
--End--
Nortel Confidential
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