Rockwell Automation 1512B MV Controllers, 200/400A Two-High Cabinet, Standard and Arc-Resistant Enclosure - Manual (Page 81)

Rockwell Automation Publication 1500-UM055G-EN-P - May 2013 73
ArcShield Unit Information Appendix A
Figure 70 - Cross-section of Plenum Extension, dimensions in inches [mm]
Plenum Exhaust Considerations
The following options for locating the plenum exhaust are presented:
1. Plenum ducted to an area of the control room where arc gases are permitted
to escape, with plenum extensions (see Figure 71 , Figure 72 and Figure 73 ).
2. Plenum duct to outside of control room (see Figure 71 and Figure 72 ).
Plan the location where the plenum will exhaust. Ensure that:
• There is no access to personnel while equipment is energized.
• Area is free of flammable material or vapors
Ensure that adequate space is provided around the plenum exhaust, as outlined in
Figure 71 through Figure 73 .
23 [584]
25 [633]
IMPORTANT Be aware that equipment in the area of the plenum exhaust point will be
damaged or destroyed.