Eaton COOPER POWER SERIES User manual

UltraSIL® Polymer-Insulated CMU Outdoor Fuse Open Distribution
Cutout Installation Instructions
COOPER POWER
SERIES
CMU Fuse
MN132034EN Effective July 2019
Supersedes September 2018

DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY
The information, recommendations, descriptions and safety notations in this document are based on Eaton Corporation’s
(“Eaton”) experience and judgment and may not cover all contingencies. If further information is required, an Eaton sales
office should be consulted. Sale of the product shown in this literature is subject to the terms and conditions outlined in
appropriate Eaton selling policies or other contractual agreement between Eaton and the purchaser.
THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES
OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY
EXISTING CONTRACT BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON. THE
CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES.
In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or other-
wise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or
loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the use of existing
power facilities, or claims against the purchaser or user by its customers resulting from the use of the information, recom-
mendations and descriptions contained herein. The information contained in this manual is subject to change without notice.
ii INSTALLATION INSTRUCTIONS MN132034EN July 2019

Contents
SAFETY INFORMATION
Safety information .............................................................................iv
PRODUCT INFORMATION
Introduction ...................................................................................1
Acceptance and initial inspection ...................................................................1
Handling and storage ............................................................................1
Standards .....................................................................................1
INSTALLATION PROCEDURE
Mounting the cutout.............................................................................2
Connecting electrical leads........................................................................2
Installing fuse ..................................................................................2
OPERATION
Removal of a fuse ..............................................................................5
DIMENSIONAL INFORMATION
Dimensions....................................................................................5
iii
UltraSIL® Polymer-Insulated CMU Outdoor Fuse Open Distribution Cutout
INSTALLATION INSTRUCTIONS MN132034EN July 2019

Safety for life
Eaton meets or exceeds all applicable industry standards relating to product safety in its Cooper Power™ series products.
We actively promote safe practices in the use and maintenance of our products through our service literature, instructional
training programs, and the continuous efforts of all Eaton employees involved in product design, manufacture, marketing, and
service.
We strongly urge that you always follow all locally-approved safety procedures and safety instructions when working around
high-voltage lines and equipment, and support our “Safety For Life” mission.
Safety information
The instructions in this manual are not intended as a substi-
tute for proper training or adequate experience in the safe
operation of the equipment described. Only competent
technicians who are familiar with this equipment should
install, operate, and service it.
A competent technician has these qualifications:
 Is thoroughly familiar with these instructions.
 Is trained in industry-accepted high- and low-voltage safe
operating practices and procedures.
 Is trained and authorized to energize, de-energize, clear,
and ground power distribution equipment.
 Is trained in the care and use of protective equipment
such as arc flash clothing, safety glasses, face shield,
hard hat, rubber gloves, clampstick, hotstick, etc.
Following is important safety information. For safe installa-
tion and operation of this equipment, be sure to read and
understand all cautions and warnings.
Hazard Statement Definitions
This manual may contain four types of hazard statements:
DANGER
Indicates an imminently hazardous situation which, if
not avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.
NOTICE
Indicates a potentially hazardous situation which, if not
avoided, may result in equipment damage only.
Safety instructions
Following are general caution and warning statements that
apply to this equipment. Additional statements, related to
specific tasks and procedures, are located throughout the
manual.
DANGER
Hazardous voltage. Contact with hazardous voltage will
cause death or severe personal injury. Follow all locally-
approved safety procedures when working around high-
and low-voltage lines and equipment. G103.3
WARNING
Before installing, operating, maintaining, or testing this
equipment, carefully read and understand the contents
of this manual. Improper operation, handling, or
maintenance can result in death, severe personal injury,
and equipment damage. G101.0
WARNING
This equipment is not intended to protect human
life. Follow all locally-approved procedures and safety
practices when installing or operating this equipment.
Failure to comply can result in death, severe personal
injury, and equipment damage. G102.1
WARNING
Power distribution and transmission equipment must
be properly selected for the intended application. It
must be installed and serviced by competent personnel
who have been trained and understand proper safety
procedures. These instructions are written for such
personnel and are not a substitute for adequate training
and experience in safety procedures. Failure to properly
select, install, or maintain power distribution and
transmission equipment can result in death, severe
personal injury, and equipment damage. G122.2
!
SAFETY
FOR LIFE
!
SAFETY
FOR LIFE
iv
UltraSIL® Polymer-Insulated CMU Outdoor Fuse Open Distribution Cutout
INSTALLATION INSTRUCTIONS MN132034EN July 2019

Product information
Introduction
Eaton’s Cooper Power series UltraSIL Polymer insulated
outdoor fuse holding cutout will accept CMU Fuses (See
Figure 1). The cutout’s primary function is to interrupt fault
or overload current within its rating on a distribution line to
protect the electric circuit and/or connected equipment.
Read this manual first
Read and understand the contents of this manual and follow
all locally approved procedures and safety practices before
installing or operating this equipment.
Additional information
These instructions cannot cover all details or variations
in the equipment, procedures, or process described nor
provide directions for meeting every possible contingency
during installation, operation, or maintenance. For additional
information, contact your representative.
Acceptance and initial inspection
Each cutout is in good condition when accepted by the
carrier for shipment. Upon receipt, inspect the shipping
container for signs of damage. Unpack the cutout and
inspect it thoroughly for damage incurred during shipment.
If damage is discovered, file a claim with the carrier
immediately.
Handling and storage
Be careful during handling and storage of the fuse cutout
combination to minimize the possibility of damage. If
the cutout is to be stored for any length of time prior to
installation, provide a clean, dry storage area.
Standards
ISO 9001 Certified Quality Management System
MOUNTING
BRACKET
INSULATOR
FUSE
PULL RING
LOWER
CONNECTOR
UPPER
CONTACT
ASSEMBLY
UPPER
CONNECTOR
LOWER CONTACT
ASSEMBLY
Figure 1. UltraSIL Polymer-Insulated CMU fuseholder
cutout assembly
Installation procedure
The fuseholder must be properly selected for each
installation with consideration to recovery voltage,
continuous current (fuse rating), basic insulation level (BIL)
and fault interrupting rating.
Mounting the cutout
1. Securely attach the mounting bracket, if supplied
with the cutout, to the crossarm or pole per standard
procedure.
NOTICE
Do not mount this cutout in vaults or other enclosed
areas because of the expulsion emitted during fault
interruption when using a fuseholder. The result
could be equipment damage to the cutout and other
equipment in the vicinity.
2. Mount the cutout on the mounting bracket making
sure the external-tooth lockwasher is placed between
the mounting bracket and the cutout bushing support
pin (See Figure 2). Tighten the nut by hand.
3. Rotate the cutout and the mounting bracket to
provide maximum clearance for the operator and maxi-
mum ease of operation.
4. Securely tighten the carriage bolt nut with a 3/4"
wrench.
CARRIAGE BOLT
NUT
CUTOUT BUSHING
SUPPORT PIN
EXTERNAL-TOOTH
LOCKWASHER
MOUNTING
BRACKET
LOCKWASHER
Figure 2. Mounting the cutout to the mounting bracket
Connecting electrical leads
1. Loosen upper and lower connectors (See Figure 1).
2. When using aluminum conductors, wire brush con-
ductors and apply a coating of oxidation inhibitor
before inserting conductor into connector.
3. Tighten upper and lower connectors to a maximum
20 ft-lbs.
Table 1. Cutout connectors — eye bolt or parallel
groove
Connector Size Connector Cable Range
Upper Large #6 (0.204) to 250 MCM (0.575)
Lower Large #6 (0.204) to 250 MCM (0.575)
1
UltraSIL® Polymer-Insulated CMU Outdoor Fuse Open Distribution Cutout
INSTALLATION INSTRUCTIONS MN132034EN July 2019

Installation (fusing) in outdoor mountings
Attach the fuse end fittings (See Figure 3) as follows:
1. The lower end fitting must be attached first. Slip the
lower end fitting over the upper end of the fuse and
slide it down until the locating slot seats on the locat-
ing pin on the lower ferrule of the fuse. Next, back off
the locknut on the clamp screw and tighten the clamp
screw firmly (90 - 100 in-lbs.); secure it with the locknut.
2. Slip the upper end fitting over the fuse. Align the locat-
ing pin (inside the upper end fitting) with the locating
slot in the fuse and seat the upper end fitting firmly
against the upper end of the fuse. Tighten the clamp
screw firmly (160 - 180 in-lbs.). Do not remove the
outer cap from the bottom of the fuse.
Clamp
screw
Locating Pin
(inside bore)
Locknut
Clamp screw
Actuating
Pin – extends
through Upper
Seal when
Fuse Unit is
blown and
extends the
Blown- Fuse
Indicator
Colored End
Cap must not
be disturbed
when CMU
fuse unit is
used in CMU
fuse
mounting Fuse unit with end
fittings attached.
Upper
Seal
Clamp
Locating
Slot
Locating
Slot
Lower
Ferrule
Locating
Pin
Upper
End
Fitting
Lower
End
Fitting
Upper
End
Fitting
Lower
End
Fitting
CMU
Fuse
Unit
Figure 3. Oudoor CMU fuse fittings
Installing a fuse into the fuseholder cutout
Once the end fittings for the fuse have been installed on the
fuse
1. Insert the hook stick into the fuse’s lower end fitting
lifting ring.
2. Place the fuse into the hinge of the cutout (See
Figure 4).
3. Remove the hook stick.
4. After positioning oneself well clear of the vented
end and exhaust path of the cutout, the operator
should place the hook stick in the pull ring on the upper
ferrule of the fuse.
5. Rotate the fuse to an intermediate position as in (See
Figure 5).
6. While looking away from the cutout, quickly and
firmly drive the fuse into the closed position.
Figure 4. Inserting the fuse into the UltraSIL Polymer-
Insulated fuse holder cutout
LIFTING
RING
HINGE
7. Remove the hook stick from the pull ring carefully to
avoid opening the fuseholder.
CAUTION
Do not attempt to interrupt load current by pulling
on the fuseholder pull ring to open the cutout. An arc
started by opening a cutout under load in this manner
could cause injury or damage to equipment.
Figure 5. Closing the fuse into the UltraSIL Polymer-
Insulated cutout
PULL
RING
2
UltraSIL® Polymer-Insulated CMU Outdoor Fuse Open Distribution Cutout
INSTALLATION INSTRUCTIONS MN132034EN July 2019

Operation
When the fuse clears a fault, the dropout mechanism
should allow it to drop open in the cutout.
CAUTION
Only qualified personnel should operate a cutout. Such
personnel should always wear appropriate protective
equipment such as rubber gloves, hard hats, safety
glasses, etc., in accordance with established utility and
safety practices.
Removal of a fuse
1. Insert a hook stick into the lifting ring of the fuse
and remove it from the lower contact assembly of the
cutout.
2. Remove the end fittings from the operated fuse. With
a new fuse and removed end fittings, follow the instal-
lation instructions on page 2 starting with Installation
(fusing) in outdoor mountings.
Dimensional information
5.00"
(127mm)
4.13" (105mm)
to
5.16" (131mm)
2.63" (67mm)
(standard bracket)
to
5.88" (149mm)
(extended bracket)
B
CA
D
Figure 6. UltraSIL polymer-insulated fuseholder cutout
assembly (See Table 2)
Table 2. UltraSIL polymer-insulated dimensional data
Voltage
Rating
kV
BIL
kV
Dimensions inches (mm)
A B C D
17.1 150 17.91 (455) 16.74 (425) 10.77 (274) 18.13 (461)
27.1 150 21.13 (537) 17.25 (438) 12.63 (321) 21.88 (556)
3
UltraSIL® Polymer-Insulated CMU Outdoor Fuse Open Distribution Cutout
INSTALLATION INSTRUCTIONS MN132034EN July 2019

Eaton
1000 Eaton Boulevard
Cleveland, OH 44122
United States
Eaton.com
Eaton’s Power Systems Division
2300 Badger Drive
Waukesha, WI 53188
Eaton.com/cooperpowerseries
© 2019 Eaton
All Rights Reserved
Printed in USA
MN132034EN Rev 01
!
SAFETY
FOR LIFE
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information call 1-877-277-4636 or visit:
www.eaton.com/cooperpowerseries.
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