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Rockwell Automation Publication 2100-IN012G-EN-P - August 2016
Chapter 2
Installation Procedures
Seismic Requirements
To demonstrate the seismic withstand of various CENTERLINE MCCs
[20 in. deep (508 mm), 30 in. deep (762 mm) back-to-back, and 40 in. deep
(1016 mm) back-to-back], the MCC design construction has been qualified by
seismic calculations per the Uniform Building Code (UBC). CENTERLINE
2100 MCC samples have been seismically qualified by dynamic (triaxial multi-
frequency testing) seismic tests per IEEE 344 Seismic Test Standards. The
results of the MCC seismic testing demonstrated compliance with the 100% g
level of Uniform Building Code 1997 (UBC) zone 4 (the maximum UBC
zone) and 100% g level of The International Building Code 2006 (IBC), for
example, the MCC structure, the MCC units, and the MCC components or
electrical functions were not compromised when subjected to a UBC Zone 4
earthquake, or the IBC seismic event. Per the IEEE 344 standard, the
equipment was under power and operated before, during, and after the seismic
tests.
To obtain a UBC or IBC seismic withstandability, each individual
CENTERLINE 2100 MCC lineup (for example, both front and back MCCs
in ‘back-to-back applications), must be mounted on an adequate seismic
foundation and installed per the seismic anchoring requirements as shown in
the following illustrations.
In seismic application dimensions ‘E’ applies to the first and last sections of the
MCC lineup. See Figure 11 -
Mounting Dimensions for 15 in. and 20 in.
Sections
for dimensions.
Figure 22 - Seismic Bolt Down Requirements
IMPORTANT
Variable frequency drive units using ‘rollout’ drive configurations are not
seismically tested.
E
E
Rear
Front
First Section
Last Section
Second Section and
Additional Sections
MCC Lineup
1
The hardware required is 1/2 in.-13 Grade 5 or HSL-3 M12 or better bolts embedded in the foundation.
1
1
1
Содержание CENTERLINE 2100
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