S&C Instruction Sheet 695-510 11
Operation
Manually Opening or Closing
Visi-Gap Load-Interruper Switches and
Visi-Gap Fault Interrupters
NOTICE
If the load-interrupter switch or fault interrupter is
equipped with a motor operator, refer to S&C Instruction
Sheets 695-520, “S&C Vista SD Underground Distribution
Switchgear: Installation and Operation of Vista SD Motor
Operator,” and 695-525, “S&C Vista SD Underground
Distribution Switchgear: Vista SD Portable Remote
Control Pendant.”
Vault-Mounted Style
STEP 1. Retrieve manual operating handle from its storage
location on the side of the mounting frame. The
handle is tethered to the switchgear assembly to
prevent its removal. See Figure 6.
STEP 2. Attach the manual handle to the shaft of the
operating mechanism. Rotate the handle in the
appropri ate d irection rm ly, a nd wit hout hesit ation ,
all the way to the stops. See Figure 7.
(a) To open the load-interrupter switch or fault
interrupter, rotate handle counterclockwise.
(b) To close the load-interrupter switch or fault
interrupter, rotate handle clockwise.
The manual operating handle may be operated
from a variety of locations using a rope, a shotgun
stick, or by hand (illustrated).
STEP 2. Check the position indicators to conrm that the
load-interrupter switch or fault interrupter is in the
desired position (open or closed). See Figure 8.
STEP 3. Conrm the position of the isolating
disconnect using the large viewing window. See
Figure 9.
STEP 4. Return the manual operating handle to its storage
location on the side of the mounting stand, taking
care to position the tether out of the way.
(a)
(b)
Figure 6. The manual operating handle stored on a
mounting stand.
Figure 7. Rotate the manual handle counterclockwise to
open (a), clockwise to close (b).
Open
Open
Closed
Closed
Figure 8. Indicators and mimic bus show position of load-
interrupter switch or fault interrupter.
Figure 9. Visible-open gap (isolating disconnect) is easy to
see through large viewing windows
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