S&C Instruction Sheet 466-500 17
OPEN/CLOSE lever
Figure 12. Operating the OPEN/CLOSE lever into the
Closed position.
To Open:
Pull the yellow OPEN/CLOSE lever down
firmly using the straight prong of the Talon tool or a dis-
tribution prong. Remove the tool right away. The vacuum
interrupter inside the VacuFuse II interrupter will open,
and the POSITION indicator will show the green target.
After one minute of the vacuum interrupter in the
Open
position, the unit will drop out. See Figure 11.
To Close:
Push the pull-ring of the yellow OPEN/CLOSE
lever up firmly using the straight prong of the Talon tool
or a distribution prong. The vacuum interrupter inside the
VacuFuse II interrupter will close after 45 seconds of the
unit being powered, and the POSITION indicator will show
the red target. See Figure 12. If the VacuFuse II interrupter
is inadvertently closed into a fault, the vacuum interrupter
will trip open independently of any force still applied to
OPEN/CLOSE lever.
To R e set th e OPEN / CL O SE L ever Af ter
Manually Closing into Fault Current:
When the
VacuFuse II interrupter trips in response to a fault,
the lever does not move, leaving the lever in the
Closed
position when the vacuum interrupter is in the
Open
position. The lever can be “reset” by operating it into
the
Open
position while the vacuum interrupter is in the
Open
position. When the lever is in the
Closed
position,
the interrupter will automatically close the next time it is
pushed into the cutout mounting and synchronize itself.
Note:
After a permanent fault occurs, it is necessary to
wait at least 20 seconds before closing the interrupter into
the cutout mounting again. If the interrupter is closed into
the cutout mounting immediately after a permanent fault,
it will drop-out without closing. This happens due to the
interrupter interpreting that it never dropped-out from the
cutout mounting after the permanent fault.
Operation
Figure 11. Operating the OPEN/CLOSE lever into the Open
position.
OPEN/CLOSE lever
