Rockwell Automation Publication 1500-UM055I-EN-P - December 2021
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Appendix A ArcShield Unit Information
Figure 73 - Chimney Exhaust Space Requirements
Minimum H1: 1.7 m (67 inches)
Minimum H: 1 m (39 inches)
Additional Notes
•
The walls of the plenum exit area must be capable of withstanding the
pressure generated.
•
Any painted surfaces which face direct contact with the arc products may
ignite. Flame suppression is recommended.
•
The exit point can also be outside the building. Ensure exit area can not
be blocked by ice, snow, or vermin nests.
•
Access barriers are recommended as a means of restricting access by
personnel while the equipment is energized. Chain link fencing is a
suitable barrier material.
•
Equipment that consists of more than 4 vertical sections bolted together
may require additional plenum exits. Rockwell Automation will provide
guidance on requirements for additional plenum exits when required.
Chimney Information
A chimney can be provided for each unit, and is to be field mounted on top of
the unit structure. The purpose of the chimney is to direct the hazardous
flames and gases away from the top of the resistant enclosure. The chimney is
secured to the top of each unit structure. Refer to
for chimney
installation instructions.
H1
H
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