24
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
OPERATING AN MVS SWITCH WITH A KEy INTERLOCK BOLT EXTENDED
WILL RESULT IN EQUIPMENT DAMAGE AND MAy ALSO EXPOSE A PERSON
TO BODILy INJURy OR DEATH.
THE KEy MUST BE INSERTED INTO THE INTERLOCK AND ROTATED TO
RETRACT THE LOCKING BOLT BEFORE OPERATING AN MVS SWITCH.
Hand operation of a motor operated switch
A special pin connects the linear actuator to the switch operator .
Loosen the screw holding the pin in place and remove this pin
(see
Figure 32
) . Remove the bottom support pin holding the linear
actuator, pull it out sufficiently to permit unplugging the linear
actuator and removing it (see
Figure 33
) . The switch may
now be manually operated with the removable handle .
Figure 32. Special Pin and Screw at the Top of the Motor
Actuator Piston
Figure 33. Bottom Support Pin
WARNING
DEFEATING OR DISENGAGING SAFETy INTERLOCKS ON AN MVS SWITCH
THAT IS CONNECTED TO A POWER SOURCE MAy RESULT IN PROPERTy
DAMAGE, BODILy INJURy, OR DEATH.
DO NOT DEFEAT OR DISENGAGE ANy SAFETy INTERLOCKS.
Maintenance
The linear actuator itself is completely weather-sealed . The linear
actuator and its associated bearings are lubricated for their normal
life many times in excess of the main switch and therefore require
no maintenance .
