Cisco Content Delivery Engine 100/200/300/400 Hardware Installation Manual page 93

Appendix D Connecting DC Power
–
–
–
–
–
Note
Figure D-3
1
1
Nut
2 Star washer
Attach the building ground wire to the building ground stud (see
Step 3
The DC ground connection in the CDE serves as a functional earth point to maintain the full EMI and
Warning
EMC integrity of the equipment. The purpose is to mitigate the damaging effects of electrostatic
discharge. This connection should be installed by a trained service person and the equipment is to be
installed per local code or local authority having jurisdiction (AHJ). The building ground wire should
not exceed 3 meters in length and be sized similarity to the conductors used for the DC power
connections (–48 VDC and +Return).
OL-13478-03
Star washer
PM ground ring lug 1
PM ground ring lug 2
Star washer
Nut
Install star washers between the ring lug and chassis ground connection so that the star washers
dig into the metalwork finish and make a good ground bond. Use a wrench to tighten the nut and
secure the connection.
CDE200 PM Ground Stud Order
3
2
Cisco Content Delivery Engine 100/200/300/400 Hardware Installation Guide
4
2
3
3
PM ground ring lug
4 PM ground stud
Connecting DC Power to a CDE200
Figure D-4).
D-3