Model 6 Motor Control Centers 80459-641-01E
Appendix C—Automatic Vertical Bus Shutter 10/2012
© 1999–2012 Schneider Electric All Rights Reserved124
ENGLISH
Appendix C—Automatic
Vertical Bus Shutter
Introduction
The automatic vertical bus shutter is an optional feature for the Model 6
motor control center (MCC) vertical bus. The shutters are pre-assembled
and installed as part of the MCC line-up.
Automatic bus shutters open and close the vertical bus connection point
when units are inserted and removed from the structure. The shutters can
be located throughout the MCC and placed in 6 in. (152 mm) increments.
They mount to the left edge of each midshelf.
The automatic shutter assembly requires an updated midshelf to allow
clearance for the shutter above the plug-in unit.
NOTES: • MCC structures shipped before January 2003 cannot use the top
3-in. (76 mm) space with the automatic vertical bus shutter option.
A 3-in. (76 mm) cover plate is required to cover the opening.
• Compac™ 6 control units shipped before January 2003 cannot
be used with the automatic vertical bus shutter option.
• Variable frequency drive and soft starter units 45 in. or taller
that shipped before July 2003 with a side-panel opening as
shown in Figure 145A, require an auto-shutter cover (Square D
Seneca part #80451-765-01). The auto-shutter cover aligns
with the back edge of the center-most flat head screw as
shown in Figure 145B.
There are four main components of the automatic vertical bus shutter
(see Figure 146 on page 125):
1. Operator Mechanism: Operates the vertical bus shutter, allowing the
plug-in unit to engage the vertical bus.
2. Mechanism Housing: Protects the mechanism from incidental foreign
material that could obstruct the intended operation.
DANGER
HAZARD OF ELECTRIC SHOCK,
EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective
equipment (PPE) and follow safe electrical
work practices. See NFPA 70E or
CSA Z462.
• This equipment must only be installed and
serviced by qualified electrical personnel.
• Turn off all power supplying this equipment
before working on or inside equipment.
• Always use a properly rated voltage sensing
device to confirm power is off.
• Replace all devices, doors, and covers
before turning on power to this equipment.
Failure to follow this instruction will result
in death or serious injury.
Figure 145: Location of Auto-Shutter Cover for Side-Panel Opening
Side panel
opening
Auto-shutter cover
145A 145B
To Next Page
Loading...
