12
Instruction Booklet
IB01900002E
Effective June 2011
Instructions for Magnum DS Metal-Enclosed
Low-Voltage NEMA 3R Assemblies
EATON CORPORATION
www.eaton.com
Figure 8. Roof Seam Cover.
4.3.2 Assembly Procedures
When correctly installed, both rear and front-accessible assemblies
should conform to the following requirements:
1. Front panels should form a straight line. When transformers and/
or other gear are included, equipment should be located in keep-
ing with the plan drawings supplied with the equipment.
2. Vertical sections must be correctly spaced from center to center
and plumb. A suggestion for lining up the shipping groups is to
establish a base line a few inches in front of the assembly and
parallel to the final location. Equalize the distances from the front
of the shipping groups to the base line, thus making the face of
the assembly parallel to the base line. Check each vertical sec-
tion by dropping a plumb line from the top corner of each vertical
section. It should align with the bottom corner.
3. The entire assembly of vertical sections should be securely fas-
tened to floor channels or base pad.
4. Shipping groups must be securely bolted together and all bus
and control wiring connections properly made.
After the first shipping group has been located, the second ship-
ping group should be moved into position and similarly checked.
The shipping groups are fastened together in accordance with the
instructions given in drawing 9253C18. This drawing is included in
the information packet attached to the side of the switchgear assem-
bly. Should additional copies of this drawing be needed, contact your
Eaton sales office.
4.4 Bus, Cable and Control Connections
Refer to Section 4.4.1 thru 4.4.6 of reference IB01901001E for com-
plete instructions and guidelines on various bus connections, installa-
tion of power cables, and connection of control wiring.
4.5 Traveling Circuit Breaker Lifter
The traveling overhead circuit breaker lifter is a standard device
installed on these assemblies where an aisle-way is present. For
convenience the hoist assembly is shipped contained within one
of the end shipping sections of any multi-section shipping group.
Remove the retaining straps securing the breaker lifter hoist prior to
use. A ready-to use overhead lifter is shown in Figure 9.
Figure 9. Overhead Circuit Breaker Lifter.
DANGER
DO NOT STAND UNDER THE CIRCUIT BREAKER DURING HOISTING
OPERATIONS. THE CIRCUIT BREAKER MIGHT SLIP AND CAUSE PERSONAL
INJURY. KEEP HANDS AND TOOLS AWAY FROM SPREADER BAR, LIFTING
HOOKS AND BREAKER. SEVERE INJURY MAY RESULT. SUDDEN MOTIONS
ARE COMMON IN A CABLE UNDER TENSION AS IT WINDS AROUND A
WINCH DRUM.
Spreader bars that attach to the traveling hoist for purposes of
attaching to the circuit breaker will be shipped separately.
In assemblies where an aisle-way is not present (non-walk-in), or by
customer request, a separate portable breaker lifter may be speci-
fied. Portable lifting devices are recommended to only be utilized on
smooth level surfaces. See Figure 10 below.
4.6 Moving Parts
There are few moving parts in the stationary structures of Magnum
DS Low-Voltage Assemblies. It is recommended that all mov-
ing parts be carefully operated by hand. This will ensure that no
binding or damage has occurred during shipment or handling. In
some cases, accessories may be blocked or braced for shipment.
Thoroughly check apparatus, such as meters and relays, for forms of
blocking or bracing which must be removed.
