ABB MNS-Up, Service Manual

Page: 43 / 84

43 ER EC T I N G
7.4 Frame and enclosure
7.4.1 EMC measures for enclosure
7.4.1.1 EMC seals between sections
EMC seals must be provided between two UPS sections. Frame connections must be provided in 225 mm dis-tance.
EMC sealing must be provided between two MNS-Up sections as well as between MNS-Up sections and other MNS sections.
7.4.1.2 EMC seals for roof plates
Roof and bottom plates need to be fixed with all screw holes which are provided in 225mm distance. No addi-tional EMC
sealing is required.
7.4.1.3 EMC seals for bottom plate
All MNS-Up sections require bottom plates due to EMC requirements. The bottom plates need to be fixed in a distance
of 225 mm, and no additional EMC seals are required.
7.4.2 EMC seals for shipping splits
UPS sections shall be joined with partition wall 19 between two MNS-Up sections, as well as between MNS-Up section and
MNS sections. EMC sealing needs to be provided on both sides of the partition wall 19, at top and bottom.
7.4.3 Rear walls and side walls
Rear walls and side walls are unpainted on the inside surfaces where they touch the section frame.
Rear walls and side walls need to be screwed in a distance of 225 mm to the section frame. Required fixing holes are pro-
vided. EMC sealing shall be added at the top and bottom of the rear walls and side walls.
Figure 7-04 EMC sealing for rear walls of the MNS-Up section Figure 7-05 EMC sealing for side walls and partition wall 19
EMC sealing
EMC sealing
for side walls
and partition
wall 19