Rockwell Automation 2092-DAx Ultra1500 User Manual - Manual (Page 25)

Publication 2092-UM001D-EN-P — July 2005
Installing Your Ultra1500 1-13
Bonding Multiple Subpanels
Bonding multiple subpanels creates a common low impedance exit path for
the high frequency energy inside the cabinet. Subpanels that are not bonded
together may not share a common low impedance path. This difference in
impedance may affect networks and other devices that span multiple panels.
Refer to the figure below for recommended bonding practices.
Figure 1.4
Multiple Subpanels and Cabinet
Planning Your Panel Layout This section outlines the practices which minimize the possibility of
noise-related failures as they apply specifically to Ultra1500 installations. For
more information on the concept of electrical noise reduction, refer to System
Design for Control of Electrical Noise Reference Manual (publication
GMC-RM001x-EN-P).
Recommended:
Bond the top and bottom of each subpanel to the cabinet using
25.4 mm (1.0 in.) by 6.35 mm (0.25 in.) wire braid.
Scrape the paint around each fastener to
maximize metal to metal contact.
Bonded cabinet
ground bus to
subpanel