S&C Instruction Sheet 662-510
15
Fusing
Manual PMH Pad-Mounted Gear is furnished with S&C
Fuse Mountings with Uni-Rupter Interrupters that
accommodate Type SML-20 Power Fuses, Type SML-4Z
Power Fuses, or Fault Fiter Electronic Power Fuses. Fault
Fiter Electronic Power Fuse Mountings also accommo date
a variety of current-limiting fuses.
WARNING
When selecting a current-limiting fuse, the
voltage rating of the fuse must conform to the
recommendations in Appendix D on page 31.
Assembling the Fuse
S&C Power Fuses
Install an SMU-20 Fuse Unit into each set of end-fittings,
an SM-4 Refill Unit into each holder, or a Fault Fiter
Inter rupting Module and Control Module into each holder,
in accordance with the instruction sheet furnished with
the fuse unit, refill unit, or interrupting module.
Current-Limiting Fuses
S&C Holders for current-limiting fuses are designed for
use in pad-mounted gear models that include mountings
for Fault Fiter Electronic Power Fuses. These holders
will accommodate the current-limiting fuses listed in
Appendix D on page 31. For instructions on installing
current-limit ing fuses in current-limiting fuse holders,
refer to S&C Instruction Sheet 660-500.
Installing the Fuse in the Mounting
Follow the instructions found in the “Installing and Closing
the Fuse” section on pages 16 through 18.
