S&C ELECTRIC COMPANY
s
INSTRUCTION SHEET
663-503
Page 15 of 35
August 14, 1995
S&C Source-Transfer PMH Pad-Mounted Gear is fur-
nished with S&C Fuse Mountings with Uni-Rupter that
accommodate S&C Type SML-20 Power Fuses, S&C Type
SML-4Z Power Fuses, or S&C Fault Fiter Electronic
Power Fuses. Fault Fiter Electronic Power Fuse Mount-
ings also accommodate a variety of current-limiting fuses.
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 Appen-
dix E. For instructions on installing current-limiting fuses
in current-limiting fuse holders, refer to S&C Instruction
Sheet 660-500.
Ç
WARNING
When selecting current-limiting fuses, the voltage rating
of the fuses must conform to the recommendations in
Appendix E.
Failure to conform to these recom-
mendations can result in a flashover, injury, and
equipment damage.
Installing the Fuse in the Mounting
Follow the instructions found under “Installing and Clos-
ing the Fuse” on pages 16 through 19.
Warranty Qualifications
The standard warranty contained in seller’s standard con-
ditions of sale (as set forth in Price Sheet 150) does not
apply to S&C Source-Transfer PMH Pad-Mounted Gear
where fuse units, fuse-unit end fittings, holders, refill
units, or switch blades of other than S&C manufacture are
used in conjunction with S&C SML Mountings. Nor does it
apply to S&C Source-Transfer PMH Pad-Mounted Gear
where other than Fault Fiter Electronic Power Fuses,
S&C Switch Blades, or the current-limiting fuses listed in
Appendix E are used in conjunction with Fault Fiter Elec-
tronic Power Fuse Mountings and S&C Holders designed
therefor, or when current-limiting fuses are applied other
than as set forth under “Recommended Voltage Ratings”
for current-limiting fuses in Appendix E.
FUSING
