2
Instructional Leaflet
IL019116EN
Effective July 2016
Installation guidelines for users of Magnum DS
Low-Voltage Front-Access Switchgear Assemblies
for seismic applications
EATON
www.eaton.com
Plan view
Floor steel
Floor steel
Rear wall
c
d
b
c
b
c
a
c
e
Figure 1. Welding of indoor structures to imbedded floor steel—front-access Magnum switchgear
a
0.19 inches (4.8 mm) weld, 4.00 inches (101.6 mm) long at two places on front of each section starting 0.50 inches (12.7 mm) from each edge of structure.
See
Figure 3
for front access wall brace weld instructions.
b
Internal bracket on each end of line up to be plug welded to floor steel.
c
For nuclear installations, weld per AWS D1.1, alternatively, welding procedures and personnel qualifications may be performed IAW ASME BPVC Section IX and the inspections
be performed IAW AWS D1.1, and/or D1.3 and/or D9.1.
d
0.19 inches (4.8 mm) weld, 4.00 inches (101.6 mm) long at two places on rear of each section starting 0.50 inches (12.7 mm) from each edge of structure if wallmount brace is not being used.
e
Sufficient clear space, between the wall and the rear of the switchgear, should be provided to allow for proper attachment of the switchgear to the pad.
