Description Page
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Receiving, handling, and storage . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Duplex switchgear configuration . . . . . . . . . . . . 23
Motor operation . . . . . . . . . . . . . . . . . . . . . . . . . 23
Electromechanical stored energy release
(shunt trip) . . . . . . . . . . . . . . . . . . . . . . . . . . 25
MVS switchgear bolt tightness for
bus connections and connections to
switch terminal pads . . . . . . . . . . . . . . . . . . 28
Common renewal parts . . . . . . . . . . . . . . . . . . . 28
Effective May 2011
Supersedes April 2006
Instructional Booklet IB02102006E
Type MVS (previously WLI)
metal-enclosed switchgear—
4.76 kV, 15.0 kV, 27.0 kV, and 38.0 kV
