S&C Instruction Sheet 465-500 15
Operation
Position Indicator
The POSITION indicator is located on the base of the
VacuFuse interrupter’s housing. It is a highly refl ective
visible red or green target that indicates the mechanical
position of the vacuum interrupter inside the VacuFuse
Self-Resetting Interrupter. The target is green when the
vacuum interrupter is in the
Open
position and red when
the vacuum interrupter is in the
Closed
position. See
Figures 13 and 14.
NOTICE
Catalog number option “-F1” reverses the colors of
the POSITION indicator to red for the
Open position
and green for the
Closed position . This option is
only available to Canadian utilities requiring reversed
colors on their system .
Do not refer to the position of the OPEN/CLOSE lever to
know the position of the vacuum interrupter. If the trans-
former is manually closed into fault current, the VacuFuse
interrupter will trip open in response, leaving the lever in
the
Closed
position when the vacuum interrupter is in
the
Open
position. Always observe the POSITION indica-
tor to know the position of the VacuFuse interrupter’s
vacuum interrupter.
Opening and Closing the VacuFuse
Interrupter
WARNING
Do not close the VacuFuse Self-Resetting Interrupter
found in the
Open position using the OPEN/CLOSE
lever until the cause of the fault current has been
determined and repaired . The VacuFuse interrupter
is designed to protect distribution transformers from
internal and external fault current . Manual closing
without repairing the fault could result in equipment
damage, injury, or death .
The vacuum interrupter inside the VacuFuse Self-Resetting
Interrupter can be opened or closed using the yellow
OPEN/CLOSE lever on the side of the VacuFuse interrupter.
The VacuFuse Self-Resetting Interrupter will not “drop
out” of the cutout mounting when the vacuum interrupter
is in the
Open
position. It will remain upright in the cutout
mounting until manually removed.
To Open:
Push the notched side 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 interrupter will open, and the POSITION
indicator will show the green target. See Figure 15.
Figure 13. The VacuFuse interrupter with the POSITION indicator
in the Open position.
Figure 14. The VacuFuse interrupter with POSITION indicator
in the Closed position.
Figure 15. Opening the VacuFuse interrupter by pushing up on
the OPEN/CLOSE lever.
Open
(Green)
POSITION
indicator
Closed
(Red)
POSITION
indicator
