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S&C Instruction Sheet 465-500 21
Troubleshooting
Removing the VacuFuse Interrupter from the
Cutout Mounting Using Loadbuster
®
–The
S&C Loadbreak Tool
If the VacuFuse Self-Resetting Interrupter is in its cutout
mounting with the vacuum interrupter in the
Closed
position and operating the OPEN/CLOSE lever to the
Open
position does not work, or the VacuFuse interrupter is to be
removed from its cutout mounting in the
Closed
position
for any other reason, it may be safely removed using a
Loadbuster tool.
Following opening operation with the Loadbuster tool,
the VacuFuse interrupter can be lifted out of the mounting
with gloved hands.
WARNING
DO NOT attempt to open a VacuFuse Self-Resetting
Interrupter in the
Closed position without using a
loadbreak tool such as a Loadbuster tool . An arc
started by opening a VacuFuse Self-Resetting
Interrupter under load without a loadbreak tool can
cause equipment damage, serious injury, or death .
WARNING
DO NOT attempt to use a Loadbuster tool to
open a VacuFuse Self-Resetting Interrupter while
climbing the pole . Engagement of a Loadbuster
tool in this position is difficult and may result in
improper opening operation, leading to arcing, faults,
equipment damage, serious injury, or death .
WARNING
Stay at least 5 feet (152 cm) below the VacuFuse
interrupter when operating the Loadbuster tool from
a bucket truck . Operating the Loadbuster tool from
less than 5 feet away is difficult and may result in an
improper opening operation, leading to arcing, faults,
equipment damage, serious injury, or death .
Follow these steps when using a Loadbuster tool:
STEP 1.
Check for proper resetting of the Loadbuster
tool by extending the tool about 3 inches
(76 mm) by hand. Throughout this travel, an
increasing spring resistance should be felt.
STEP 2.
Fasten the Loadbuster tool to an S&C Universal
Pole not less than 6 feet (183 cm) long [8 feet
(244 cm) for catalog number 5400R3] with the
frame of the tool in line with the pole. As shown
in Figures 23 and 24, the Loadbuster tool must
Figure 23. A correct fastening approach.
Figure 24. A correct fastening approach.