B - arcshield plenum installation instructions, Recommended torque values, Plenum bracing – Rockwell Automation 1512A MV Controllers, 400A One-High Cabinet, Standard and Arc-Resistant Enclosure User Manual
Page 81: Appendix b, Arcshield plenum installation instructions, Recommended torque values plenum bracing, Appendix, Danger
Rockwell Automation Publication 1512A-UM100F-EN-P - May 2013
73
Appendix
B
ArcShield Plenum Installation Instructions
The following instructions are provided to ensure the proper installation and
function of plenum components supplied with ArcShield enclosures. Refer to
for additional information related to ArcShield plenums before
attempting to follow these instructions.
Recommended Torque
Values
1/4-20 Thread Fasteners – 7.5 N•m (6 lb•ft)
5/16-18 Thread Fasteners – 14 N•m (11 lb•ft)
Plenum Bracing
Bracing of the plenum must be able to withstand the dynamic forces of the arc
fault as well as any other vibration or seismic effects associated with the
installation. Most of this force will be in the direction opposite to where the relief
vent exits. The amount of bracing will depend on how the plenum is supported at
its exit as well as the distance from the end of the cabinets to the exit vent.
• A flange is available for installing hangers to support the plenum weight.
• The plenum extension has holes for mechanical support.
• Weight per unit length of Rockwell supplied plenum = 28 kg/m (19 lb/ft).
• Installer is responsible for ensuring that the plenum extension has
sufficient support to resist the effect of vibrations and seismic effects.
Figure 69 - Plenum Exhaust Label
IMPORTANT
Plan the location where the plenum will exhaust (refer to
Equipment in the area of the plenum exhaust will be damaged or destroyed.
Mark the plenum exhaust area as a Hazardous Zone (
ARC FLASH HAZARD
PRESSURE RELIEF EXIT
AREAS TO BE:
- INACCESSIBLE TO PERSONNEL
WHILE EQUIPMENT ENERGIZED.
- FREE OF OBSTRUCTIONS
(REFER TO USER MANUAL).
SEVERE INJURY OR
DEATH MAY RESULT.
SORTIE DE L’ÉVENT
RÉGION ÊTRE:
- INACCESSIBLE AUX PERSONNEL
PENDANT QUE L’ÉQUIPEMENT
EST SOUS TENSION.
- DÉMUNI D’OBSTRUCTIONS
(RÉFÉRER AU MANUEL)
RISQUE DE BLESSURES
CORPORELLES GRAVES
OU MÊME LA MORT.
DANGER
DANGER
HAZARD D’ARC ÉLECTRIQUE