Operating Considerations - S&C Loadbuster Instruction Sheet

Operating Considerations

For usual operating conditions, the Loadbuster tool is
fas tened to a universal pole (stick) 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 Figure 1, Detail A or B, the Loadbuster tool
must be attached so it reaches across in front of the fuse
cutout, disconnect, power fuse, or fuse limiter. That is,
the Loadbuster anchor must be hooked to the attachment
hook on the far side of the device. The Loadbuster tool
should never be attached with its anchor hooked on the
closest side of the fuse cutout or other device as shown
in Detail C or D. Attach ing the tool in this manner would
not only obscure the operator's line of vision, but it could
also result in placing a bending stress on the tool and make
disen gagement difficult.
When the Loadbuster tool is properly attached, as
shown in Figure 1, Detail A or B, a downward pull of the
pole to open the fuse cutout, disconnect, power fuse, or
fuse limiter extends the Loadbuster tool and charges an
internal spring. At a predetermined point in the opening
stroke, a trigger inside the tool trips, releasing the charged
spring—thus separating the internal contacts and inter-
rupting the circuit. Suc cessful operation is independent of
the speed with which the fuse cutout, disconnect, power
fuse, or fuse limiter is opened.
NOTICE
When operating from a bucket truck, stay at least
5 feet (152 cm) below the device and in front of
fuse cutouts, fuse limiters, and vertically mounted
dis connects and fuses. When disconnects are
mounted inverted, approach the attachment hook
from the hinge end, staying well below the device
to be opened so excessive horizontal force is not
exerted on the insulator. See Figures 2 and 3 on
page 11.
Note: Although many words and illustrations are used
here to describe the operation of the Loadbuster tool,
correct techniques can be mastered quite easily. S&C
advises spending a reasonable amount of time practicing
with the Loadbuster tool on a de-energized fuse cutout,
power fuse, fuse limiter, or disconnect. The operating
steps illustrated in Figures 4 through 7 on pages 12
through 14, covering opening of a power fuse, apply
equally to a fuse cutout, fuse limiter, or disconnect.
10 S&C Instruction Sheet 811-505
Detail A. Correct approach.
Detail C. Incorrect approach.
Never
This! . . . or This!
Detail D. Incorrect approach.
Figure 1. Correct and incorrect approach for Loadbuster—
The S&C Loadbreak Tool.
Detail B. Correct approach.