Rockwell Automation 1512B MV Controllers, 200/400A Two-High Cabinet, Standard and Arc-Resistant Enclosure - Manual (Page 94)

86 Rockwell Automation Publication 1500-UM055G-EN-P - May 2013
Appendix B ArcShield Plenum Installation Instructions
STEP 7 – Additional
Mounting Support The Extension/Elbow Assembly must have additional mounting support.
90° Elbow Section: Approximate weight 64 kg (142 lbs)
36" Extension Assembly: Approximate weight 51 kg (112 lbs)
Figure 88 shows an example of how the Extension/Elbow Sections can be
supported by suspension from a high ceiling. Points A, B & C show where chains
or high tension cables may be connected.
Figure 88 - Completed Assembly for optional vertical exit Plenum (Right hand exit)
A B C
TIP During an arc fault, the plenum will be subjected to a brief high pressure shock
wave. The Extension/Elbow assembly may experience dynamic loading. It is
important to account for dynamic loading when selecting supporting means
and materials.