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Instructional Booklet IB02102006E
Effective May 2011
Type MVS (previously WLI)
metal-enclosed switchgear—
4.76 kV, 15.0 kV, 27.0 kV, and 38.0 kV
EATON CORPORATION www.eaton.com
WARNING
THERE ARE SEVERAL INTERLOCKS ON THE SWITCHES. THEy ARE
FOR PERSONNEL AND/OR EQUIPMENT PROTECTION. UNDER NO
CIRCUMSTANCES SHOULD THEy BE MADE INOPERATIVE WHEN
SWITCH IS IN SERVICE. TO DO SO MAy CAUSE BODILy INJURy OR
PROPERTy DAMAGE.
4. Never energize the switch without the arc chutes and the
barriers installed.
5. Always be sure that all hardware is in place and bolted
tightly before putting the switch into operation.
6. Before replacing covers, carefully inspect the bus work and
phase barriers to ensure that no tools or other objects are
accidentally left inside the unit.
Revision
Effective May 2011. Supersedes IB02102006E dated April, 2006.
Eaton contact information
For the location of the nearest Eaton sales office or distributor,
call toll-free 1-800-525-2000 or log onto www.eaton.com.
Receiving, handling, and storage
Receiving
A visual inspection—inside and out—should be performed
immediately upon receipt of the switchgear and before removing it
from the truck. Shipping papers should be checked to be sure that
all boxes or other accompanying pieces have been received. If any
damage or shortages are evident, a claim should be filed at once
with the carrier and the nearest Eaton office notified.
The data nameplate for each switchgear assembly is located inside
the mechanism access door. The master parts list number is located
on this nameplate and should be given to the Eaton representative
whenever identification of the assembly is required.
Handling
Removable lifting lugs are provided on the top of the MVS structure
for insertion of hooks to lift the complete structure. This is the only
recommended method of moving the MVS structure.
CAUTION
EXTREME CARE SHOULD BE USED NOT TO DAMAGE OR DEFORM THE
SWITCHGEAR IF OTHER MOVING METHODS ARE EMPLOyED.
Storage
If it is necessary to store the equipment before installation, keep it
in a clean, dry location with ample air circulation and heat to prevent
condensation. Like all electrical apparatus, these units contain
insulation that must be protected against dirt and moisture.
ote:N Outdoor units may be stored outside ONLY if the roof caps are
installed, the space heaters are energized, and any openings
are enclosed.
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