Installing The Fuse In The Mounting - S&C PMH Instructions For Operation Manual

S&C Source-Transfer PMH Pad-Mounted Gear
Outdoor Distribution (14.4 kv and 25 kv)
RE-FUSING — Continued
Current-Limiting Fuses
To find the blown fuses, remove each fuse in turn from its
mounting (the target cannot be seen while the fuse is in its
mounting), following the instructions found under "Open-
ing and Removing the Fuse" on pages 20 through 22. Then
inspect the fuse and check for a blown-fuse target.
NOTE: Following a two- or three-phase fault at a
three-phase installation, any unblown fuses that carried
the fault current should also be replaced. For instructions
Red target projects from top of upper
end fitting when fuse has operated
SML-20 Power Fuse
Figure 24. Blown-fuse target locations for the fuse types used in PMH models of S&C Pad-Mounted Gear.
663-503 INSTRUCTION SHEET
Page 24 of 35
August 14, 1995
Fluorescent-orange target
appears in "BLOWN" indi-
cator window when fuse
has operated (visible
through translucent holder)
SML-4Z Power Fuse
With Micro-AT
on replacing current-limiting fuses in S&C Holders,
refer to S&C Instruction Sheet 660-500. S&C Holders
will accommodate the current-limiting fuses listed in
Appendix E.

Installing the Fuse in the Mounting

Follow the instructions found under "Installing and Clos-
ing the Fuse" on pages 16 through 19.
Red target projects from top of holder
when fuse has operated
S&C ELECTRIC COMPANY
®
Control
Fault Fiter
Electronic Power Fuse
s