Fusing Equipment
Service Information
Epoxy Encapsulated X-Limiter™ Fuse
Installation Instructions
Contents
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
S240-86-1
NOTES: The bracket may be grounded to the grounding nut or
as specified by the utility.
Parking stands may be rotated by 90° increments to fit
specified configuration.
■
CAUTION: The Cooper Power Systems Epoxy
Encapsulated X-Limiter fuse is designed to be
installed in accordance with normal safe operating
procedures. These instructions are not intended to
supersede or replace existing safety and operating
procedures. READ ALL THE INSTRUCTIONS
BEFORE INSTALLING THE EPOXY ENCAPSULATED
X-LIMITER FUSE. The Epoxy Encapsulated X-Limiter
fuse should be installed and serviced only by
personnel familiar with good safety practice and the
handling of high-voltage electrical equipment.
!
GENERAL
The Cooper Power Systems Epoxy Encapsulated fuse
is a completely sealed, full range current-limiting fuse
designed for submersible applications. The terminal
connections consist of an ANSI 200 A bushing well,
permitting the use of 200 A deadbreak and loadbreak
bushing inserts and elbows. A stainless steel bracket
may be used to mount the fuse easily with minimal
support structure.
Brackets may be mounted to unistrut systems, vault
walls, or welded to an existing bracket system. The
Epoxy Encapsulated X-Limiter fuses may also be
surface mounted without a bracket in an existing
enclosure.
■
Next, install the fuse and tighten down using the two (2)
stainless steel mounting straps. Torque down to 60 to
70 ft-lbs.
Install the 200 A deadbreak or loadbreak inserts and
elbows as specified by the manufacturer.
REMOVAL
When the epoxy encapsulated fuse operates, it may be
re-fused without removing the entire mounting bracket.
Follow the appropriate steps when removing the fuse
and re-fusing:
■ De-energize the system using the approved safety
procedures.
■ Park the elbows on the rotating parking stands.
■ Remove the mounting straps.
■ Remove the fuse.
■ Replace with a new epoxy encapsulated fuse and
tighten mounting straps per installation procedure.
■ Re-energize the system using the approved safety
procedures.
INSTALLATION
Figures 1 and 2 show typical installations of the Epoxy
Encapsulated X-Limiter fuse. Figure 1 displays a typical
horizontal installation using the three-position design and
Figure 2 displays a typical vertical installation using the
three-position design.
The Epoxy Encapsulated X-Limiter fuse is installed
according to the following steps:
■ If the Epoxy Encapsulated X-Limiter fuse mounting
bracket is used, first install the bracket without the
fuse.
■ Mount the bracket to the wall using the mounting holes
making sure necessary clearances are maintained.
Figures 1 and 2 may be used as typical installations or
as specified by the utility. The bracket has provisions
for 1/2" mounting hardware. Mounting hardware is
not supplied with the bracket.
These instructions do not claim to cover all details or variations in the equipment, procedure, or process described, nor to provide
directions for meeting every contingency during installation, operation, or maintenance. When additional information is desired to
satisfy a problem not covered sufficiently for the user’s purpose, please contact your Cooper Power Systems sales engineer.
December 1997 • New Issue
Printed in U.S.A.
1
Epoxy Encapsulated X-Limiter™ Fuse Installation Instructions
10 1/16"
14 1/4", 20 1/4", OR 31 1/4"
13 9/16"
SOURCE IN
24"
LOAD
18"
2'-6"
UNOBSTRUCTED
OPERATING
CORRIDOR
8'-0" MIN.
Figure 1.
Typical horizontal vault installation.
18''
24"
24"
UNOBSTRUCTED
OPERATING
CORRIDOR
8'-0" MIN.
18"
LOAD
14-1/4"
20-1/4"
OR
31-1/4"
30"
SOURCE IN
12"
Figure 2.
Typical vertical vault installation.
© 1997 Cooper Power Systems, Inc.
X-Limiter™ is a trademark of Cooper Industries, Inc.
2
P.O. Box 1640, Waukesha, WI 53187
www.cooperpower.com
Printed on Recycled Paper
MI
12/97 3M