S&C Instruction Sheet 465-500 17
Operation
NR (non-reclose) Mode
—In the
NR
mode, the
VacuFuse Self-Resetting Interrupter will operate using the
“instantaneous” curve. The VacuFuse interrupter will lock
out and not attempt to reclose if a fault occurs while
NR
mode is selected. The VacuFuse Self-Resetting Interrupter
is in the
NR
mode when the curved line is visible on the side
of the VacuFuse interrupter’s housing. The NR LED on the
base of the VacuFuse interrupter will blink at a 2-second
interval. See the “Understanding the LED Indicators and
Position Indicator” section on page 14. See Figure 18.
To place the MODE SELECTOR lever in the
NR
mode:
Rotate the MODE SELECTOR lever downward using the
straight prong of a Talon Handling Tool or a distribution
prong. See Figure 19. The lever will lock into the vertical
position.
To place the MODE SELECTOR lever in the
Auto
mode:
Rotate the MODE SELECTOR lever to the
Up
position
using the straight prong of a Talon Handling Tool or a
distribution prong. See Figure 20 on page 18. The lever
must completely cover the curved label on the housing of
the VacuFuse Self-Resetting Interrupter.
NOTICE
The MODE SELECTOR lever pictured in Figures 17
through 20 is shown with a tag clip . This tag clip can
be used to apply a tag to the equipment . A tag can
also be applied to the OPEN/CLOSE lever and to the
VacuFuse interrupter’s pull-ring when the VacuFuse
interrupter is in the “dropout” position .
Tagging
in any of these places does not mechanically
lockout the equipment.
Figure 19. Rotating the MODE SELECTOR lever downward to
the NR mode position.
Figure 18. The MODE SELECTOR lever in the NR (non-reclose)
mode position.
