S&C VacuFuse II Installation And Operation Manual page 11

vacuum interrupter. When the VacuFuse II interrupter is
powered, the CHARGING LED will start flashing at one
flash per second as long as sufficient voltage is present
at the cutout mounting and the vacuum interrupter is
open. When full charge is achieved, the CHARGING LED
will continue flashing, the READY TO CLOSE LED will
illuminate, and the CHARGING LED will keep blinking.
NOTICE
At least 4 amperes of primary current must be
flowing through the VacuFuse II Self-Resetting
Interrupter to power the control from its Sleep state .
When powered, the control will remain powered if
the current through the device does not fall below
4 amperes . If less than 4 amperes of primary current
are present, the VacuFuse II Self-Resetting Interrupter
will still respond properly to fault current .
POSITION Indicator
The POSITION indicator is located on the base of the
VacuFuse II interrupter's housing. It contains a highly
reflective visible red or green target that indicates the
position of the vacuum interrupter inside the VacuFuse II
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
Figure 5 and Figure 6.
NOTICE
Catalog number option "-J1" reverses the colors of the
POSITION indicator to red for the Open position and
green for the Closed position . This option is available
to utilities that require reversed colors on their system .
Do not refer to the position of the manual operating lever
to know the position of the vacuum interrupter. When the
VacuFuse II interrupter trips in response to a fault, the lever
does not move, leaving the lever in the Up position when
the vacuum interrupter is in the Open position. Always
observe the POSITION indicator to know the position of the
VacuFuse II interrupter's vacuum interrupter.
Figure 5� The vacuum interrupter in the Open position�
Figure 6� The vacuum interrupter in the Closed position�
S&C Instruction Sheet 466-500
Before Starting
POSITION indicator
in the Open (green)
position
POSITION
indicator in the
Closed (Red)
position
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