Rockwell Automation 2500 CENTERLINE Motor Control Centers Installation Manual - Manual (Page 11)

Rockwell Automation Publication 2500-IN001C-EN-P - April 2014 11
Chapter
1
System Overview
CENTERLINE 2500 Motor Control Centers (MCCs) are designed for applications
that must comply with international standards and practices for low voltage motor
control centers. The CENTERLINE 2500 MCC is ideal for tough, demanding
industrial applications where uptime and ease of maintenance is required.
The time-proven CENTERLINE power bus structure distributes line power
throughout the MCC via an isolated bus work structure. Standard, center-fed,
300 A rated vertical bus supplies power to the individual units above and below the
horizontal bus for an effective 600 A capacity and virtually unrestricted unit
arrangement. An optional 600 A vertical bus provides an effective rating of 1200 A.
ArcShield Rating The CENTERLINE MCC is also available with an ArcShield™ rating. The
ArcShield rating includes arc-resistant features for enhanced protection in the
event of internal arcing faults.
In addition to standard safety features of the CENTERLINE 2500 MCC, the
ArcShield option provides the following:
• Spring latches
• Reinforced structure
• Pressure relief vent system through the top of the enclosure
• Protection up 300 ms at 480V/65 kA
Table 1 - Conformity Ratings for CENTERLINE 2500 MCC with ArcShield
An ArcShield label is provided on the MCC with information about the
accessibility level and arc fault ratings. See
Figure 9 on page 20 for an example of
this rating label and its location.
See Figure 4 on page 16 for the location of ArcShield structure protection and
page 50 for ArcShield door latches.
For more information, refer to guidelines addressed in IEC Standard 60364-5-52.
Value Description
Ratings:
Ue
lp arc
tarc
lpc arc 480V
65 kA
300 ms
65 kA
Protection Personal protection and assembly protection suitable for limited continued operation; assembly
protection is limited to outgoing units tested for conditional current under arcing conditions.
Requirements IEC/TR 61641, ed. 2.0 2008-1