S&C Alduti-Rupter User manual

December 12, 2016
© S&C Electric Company 1961-2016, all rights reserved Instruction Sheet 761-515
S&C Alduti-Rupter® Switches
Outdoor Distribution (14.4 kV and 25 kV)
Three-Pole Vertical-Break Style
Rotating Operating Mechanism
Installation
Table of Contents
Section Page Section Page
Introduction
Qualified Persons ..............................2
Read this Instruction Sheet.......................2
Retain this Instruction Sheet......................2
Proper Application..............................2
Operating Considerations ........................2
Warranty .....................................3
Warranty Qualifications..........................3
Safety Information
Understanding Safety Alert Messages ..............4
Following Safety Instructions .....................4
Replacement Instructions and Labels...............4
Location of Safety Labels ........................5
Safety Precautions.............................6
Shipping and Handling
Inspection ....................................7
Packing ......................................7
Handling .....................................8
Installation
Before Starting ................................9
Mounting to Wood..............................9
Operating Pipe Preparation ......................9
Attaching Couplings to the Switch Poles............ 10
Attaching Couplings to Outboard Bearings.......... 12
Installing the Switch to the Mounting Structure....... 12
Installing Pipe Couplings with Piercing Set Screws ... 13
Installing the Interphase Operating Pipe............ 14
Installing the Vertical Operating Pipe .............. 15
Installing the Rotating Operating Handle ........... 18
Installing Operating Handle with Key Interlock ....... 19
Checking Alignment and Adjusting the Stop Plates ...22
Checking Operation ...........................24
Connecting High-Voltage Conductors..............26
Operation
Opening and Closing the Switch..................27

2S&C Instruction Sheet 761-515
Introduction
Qualified Persons WARNING
The equipment covered by this publication must be installed, operated, and maintained
by qualified persons who are knowledgeable in the installation, operation, and mainte-
nance of overhead electric power distribution equipment along with associated hazards. A
qualified person is one who is trained and competent in:
• The skills and techniques necessary to distinguish exposed live parts from nonlive parts
of electrical equipment
• The skills and techniques necessary to determine the proper approach distances cor-
responding to the voltage to which the qualified person will be exposed
• The proper use of the special precautionary techniques, personal protective
equipment, insulating and shielding materials, and insulated tools for working on or near
exposed energized parts of electrical equipment
These instructions are intended only for such qualified persons. They are not intended to
be a substitute for adequate training and experience in safety procedures for this type of
equipment.
Read this
Instruction Sheet NOTICE
Read this instruction sheet thoroughly and carefully before installing or operating
your S&C Alduti-Rupter Switch. Familiarize yourself with the Safety Information and
Safety Precautions on pages 4 through 6.The latest version of this publication is available
online in PDF format at sandc.com/Support/Product-Literature.asp.
Retain this
Instruction Sheet
This instruction sheet is a permanent part of your S&C Alduti-Rupter Switch. Designate a
location where you can easily retrieve and refer to this publication. The latest version is
available online in PDF format at sandc.com/support/product–literature.asp
Proper Application WARNING
The equipment in this publication must be selected for a specific application. The
application must be within the ratings furnished for the equipment. Refer to S&C Specifica-
tion Bulletin 761-31 for complete application information.
These interrupter switches are not intended for breaking fault currents.
Operating
Considerations
Circuit making and breaking is involved in the normal operation of these interrupter
switches, and partial or precautionary opening or closing of the switch should not be
attempted. If the switch is covered in ice or snow, do not “chop” the switch between the
Open and Closed position to dislodge the ice.
To operate the switch, swing the handle through its full stroke without hesitation. Do
not assume that the operating handle position indicates the open or closed position of the
interrupter switch blades. After opening or closing the switch, always make a visual check
of the blade position to verify the switch blades are in the intended position, and then tag
or padlock the operating handle in accordance with standard system operating practices.
In all cases, make sure the operating handle is locked before walking away from the switch.

S&C Instruction Sheet 761-515 3
Introduction
Warranty The warranty and/or obligations described in S&C’s standard conditions of sale, as set
forth in Price Sheet 150, plus any special warranty provisions, as set forth in the applicable
product-line specication bulletin, are exclusive. The remedies provided in the former
for breach of these warranties shall constitute the immediate purchaser’s or end user’s
exclusive remedy and a fulllment of all seller’s liability. In no event shall seller’s liability
to the immediate purchaser or end user exceed the price of the specic product that gives
rise to the immediate purchaser’s or end user’s claim. All other warranties, whether express
or implied or arising by operation of law, course of dealing, usage of trade or otherwise,
are excluded. The only warranties are those stated in Price Sheet 150, and THERE ARE
NO EXPRESS OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR
A PARTICULAR PURPOSE. ANY EXPRESS WARRANTY OR OTHER OBLIGATION
PROVIDED IN PRICE SHEET 150 IS GRANTED ONLY TO THE IMMEDIATE PURCHASER
AND END USER, AS DEFINED THEREIN. OTHER THAN AN END USER, NO REMOTE
PURCHASER MAY RELY ON ANY AFFIRMATION OF FACT OR PROMISE THAT RELATES
TO THE GOODS DESCRIBED HEREIN, ANY DESCRIPTION THAT RELATES TO THE
GOODS, OR ANY REMEDIAL PROMISE INCLUDED IN PRICE SHEET 150.
Warranty
Qualifications
The standard warranty is applicable to the S&C Alduti-Rupter Switch detailed in this
instruction sheet except when it is power operated using a switch operator of other than
S&C manufacture.

4S&C Instruction Sheet 761-515
Safety Precautions
Understanding
Safety-Alert
Messages
Several types of safety-alert messages may appear throughout this instruction sheet and
on labels and tags attached to the Alduti-Rupter Switch. Familiarize yourself with these
types of messages and the importance of these various signal words:
DANGER
“DANGER” identifies the most serious and immediate hazards that will likely result in seri-
ous personal injury or death if instructions, including recommended precautions, are not
followed.
WARNING
“WARNING” identifies hazards or unsafe practices that can result in serious personal injury
or death if instructions, including recommended precautions, are not followed.
CAUTION
“CAUTION” identifies hazards or unsafe practices that can result in minor
personal injury or product or property damage if instructions, including recommended
precautions, are not followed.
NOTICE
“NOTICE” identifies important procedures or requirements that can result in product or
property damage if instructions are not followed.
Following
Safety Instructions
If you do not understand any portion of this instruction sheet and need assistance, contact
your nearest S&C Sales Ofce or S&C Authorized Distributor. Their telephone numbers
are listed on S&C’s website www.sandc.com, or call S&C Headquarters at [phone];
in Canada, call S&C Electric Canada Ltd. at [phone].
NOTICE
Thoroughly and carefully read this instruction
sheet before operating your S&C Alduti-
Rupter Switch.
Replacement
Instructions and
Labels
If you need additional copies of this instruction sheet, contact your nearest S&C Sales
Ofce, S&C Authorized Distributor, S&C Headquarters, or S&C Electric Canada Ltd.
It is important that any missing, damaged, or faded labels on the equipment be replaced
immediately. Replacement labels are available by contacting your nearest S&C Sales Office,
S&C Authorized Distributor, S&C Headquarters, or S&C Electric Canada Ltd.

S&C Instruction Sheet 761-515 5
Safety Information
Location of Safety Labels and Tags
Reorder Information for Safety Labels
Location Safety Alert Message Description Number
ADANGER Electrocution Hazard G-6580-1
BWARNING Piercing Set Screws G-10200▲
CWARNING Handle Operation G-4400R5
DWARNING Electrocution Hazard—Grounding Strap G-6596▲
EWARNING Adjustment of Operating Mechanism G-3578R1▲
▲This part is a tag that is to be removed and discarded after the switch is installed and adjusted.
D E
A
B
C
WARNING
INSTALLATION OF PIERCING SET SCREWS
(See illustrations on reverse side of tag)
1. Be sure that cutting tip of piercing set screw does not protrude through
the coupling body before installing operating pipe.
2. Install operating pipe section in coupling and finger tighten clamp bolt.
See Figure 1.
3. Adjust operating pipe. Then tighten clamp bolt.
4. Tighten piercing set screw, piercing the pipe, and continue turning until
firm resistance is felt. See Figure 2.
5. Make sure clamp bolt is tight.
Failure to properly install piercing set screws can cause slippage of
operating pipe, causing improper operation of switch, arcing, damage,
or electrical shock

6S&C Instruction Sheet 761-515
Safety Precautions
DANGER
Alduti-Rupter Switches operate at high voltage. Failure to observe these precautions will
result in serious personal injury or death.
Some of these precautions may differ from company operating procedures and rules. Where a
discrepancy exists, users should follow their company’s operating procedures and rules.
1. QUALIFIED PERSONS. Access to switches and
controls must be restricted only to qualified persons.
See “Qualified Persons” on page 2.
2. SAFETY PROCEDURES. Always follow safe operating
procedures and rules.
3. PERSONAL PROTECTIVE EQUIPMENT. Always use
suitable protective equipment such as rubber gloves,
rubber mats, hard hats, safety glasses, and flash
clothing in accordance with safe operating procedures
and rules.
4. SAFETY LABELS AND TAGS. Do not remove
or obscure any of the “DANGER,” “WARNING,”
CAUTION,” or “NOTICE” labels and tags. Remove tags
ONLY if instructed to do so.
5. ENERGIZED COMPONENTS. Always consider all
parts live until de-energized, tested, and grounded.
6. INTERRUPTER SWITCH POSITION. Always confirm
the Open/Close position of interrupter switches by
visually observing the position of the blades. Switches
may be energized from either side and with the blades
in any position.
7. MAINTAINING PROPER CLEARANCE. Always
maintain proper clearance from energized components.
8. OPERATION. Circuit making and breaking is involved
in the normal operation of this interrupter switch and as
a result, “partway” opening or closing is undesirable.
To operate, swing the operating handle through its full
travel vigorously and without hesitation. See page27.

Shipping and Handling
S&C Instruction Sheet 761-515 7
Inspection Examine the shipment for external evidence of damage as soon after receipt as possible,
preferably before removal from the carrier’s conveyance. Check the bill of lading to make
sure the shipping skids, crates, and containers listed thereon are present. If there is visible
loss and/or damage:
1. Notify the delivering carrier immediately.
2. Ask for a carrier inspection.
3. Note condition of shipment on all copies of the delivery receipt
4. File a claim with the carrier.
If concealed damage is discovered:
1. Notify the delivering carrier within 15 days of receipt of shipment.
2. Ask for a carrier inspection
3. File a claim with the carrier.
Also notify S&C Electric Company in all instances of loss and/or damage.
Packing Study the erection drawing carefully and check the bill of materials to be sure all of the
parts are at hand. When a standard mounting arrangement is specied, the shipment will
include:
1. Three switch poles
2. Operating pipe sections for interphase, horizontal-connecting, and vertical sections.
(The switch may be furnished “less operating pipe,” if specied.)
3. Miscellaneous mounting hardware (less through bolts) for securing the Alduti-Rupter
Switch to the mounting structure
4. The appropriate set of operating mechanism components for the vertical operating pipe;
e.g. handle, guide bearings, and couplings—each tagged and keyed to the bill of material
for ready identication
5. If a standard minor modication of a standard mounting arrangement is specied, the
appropriate parts, as identied in the bill of materials under sufx: “-S1,” “-S2,” “-S3,”
“-S4,” “-S5,” “-S6,” “-S8,” “-S9,” and “-S16”
-S1: Tubular berglass insulating section in vertical operating shaft
-S2: Cypoxy™ Insulator unit in vertical operating shaft
-S3: Insulated interphase sections and one berglass insulating section in vertical
operating shaft
-S4: Insulated interphase sections and one Cypoxy™ Insulator unit in vertical
operating shaft
-S5: Two-inch IPS pipe—required for rotating-type operating-mechanism vertical
shaft when the shaft exceeds three 10-foot-4-inch sections.
-S6: Key interlock – single lock for “locked-open” application
-S8: Provision for power operation of pole-mounted switches by S&C Switch
Operator—Type AS-1A
-S9: Provision for power operation of steel-structure mounted switches by S&C Switch
Operator – Type AS-1A
-S16: Provision for power operation of pole-mounted switch by 6801M Automatic
Switch Operator

Shipping and Handling
8S&C Instruction Sheet 761-515
6. Erection Drawing: A detailed erection drawing (ED) for the Alduti-Rupter Switch will
be found in a water-resistant envelope shipped with the switch. If a standard mounting
arrangement is to be used, this erection drawing is a printed sheet. This same sheet is
also furnished when a standard minor modication of a standard mounting arrangement
is used. A copy of RD-1329 (Standard Minor Modications, Rotating Operating
Mechanisms) is included. A custom erection drawing will be provided for special
mounting arrangements. Contact your nearest S&C Sales Ofce for details.
7. Power Operation: If sufx “-S8,” or “-S9” is specied, S&C Instruction Sheets 769-500
and 769-501, “S&C Switch Operators—Type AS-1A,” are included with the switch
operator shipment. Instruction Sheets 769-500 and 769-501 cover installation, operation,
and adjustment of the switch operator and should be used in conjunction with this
instruction sheet where applicable. If sufx “-S16” is specied, associated S&C
instruction sheets for the 6801M Automatic Switch Operator are included with the
switch operator shipment and should be used in conjunction with this instruction sheet
where applicable. Not all mounting arrangements are suitable for power operation.
Consult your nearest S&C Sales Ofce for details.
8. Fused Interrupter Switch. Although the interrupter switch photos shown in this
instruction sheet are not fused, the installation procedure is identical for a fused
interrupter switch.
Handling The crate the switch pole-units is packed in is designed to be moved and lifted using a lift
truck. Raised slots at the bottom of the crate are provided for a lift truck’s forks.
NOTICE
To minimize time-consuming final adjustments after installation, make sure the switch
poles are in their fully Closed position and their toggle mechanisms are against their
closed stops during installation of both the interphase and vertical operating-pipe sections.
Switch blades can be tied to their jaw-contact members, and the toggle mechanisms can
be tied to their stops.
WARNING
DO NOT lift the switch pole-units by rigging on the “live parts” or subject these parts to
undue stress from slings or fall lines. Lifting the pole-units by the live parts will damage the
switch. Rough handling may cause damage to the blades, contacts, and/or interrupters.
Failure to lift the pole-units properly can result in switch damage, causing improper
operation, arcing, or electrical shock.

S&C Instruction Sheet 761-515 9
Installation
Before Starting
NOTICE
Drawings for standard mounting arrange-
ments show only the minimum or suggested
locating dimensions for the outboard bearing
assembly, vertical-operating-pipe guide
bearings and the operating-handle assembly.
Specific locations are to be determined either
at the job site or by the user’s engineering
department.
Mounting to Wood
NOTICE
When mounting to a wood structure, a
Belleville washer must be used between
the square washer and the nut to maintain
fastener tightness in the event of wood
shrinkage. See Figure 1.
Operating Pipe Preparation
Switches Supplied with Operating Pipe:
Operating pipes can be cut to length (if not
precut at the factory) before transporting the
switch to the job site. Cutting dimensions are
shown on the erection drawing.
Belleville washer
Figure 1. Use a Belleville washer between the nut and square washer.

10 S&C Instruction Sheet 761-515
Installation
Step 1
Remove the switch poles from their crates and
arrange them on the ground in the same order
in which they will be mounted on the structure.
When applicable, arrange the outboard bearing
assembly or assemblies in the same manner.
Protect the switch poles and bearings
from contamination by dirt, mud, oil, etc. If
necessary, use blocks to keep the bearings off
of the ground.
Attaching Couplings to the
Switch Poles
Step 2
NOTICE
There is an adjustable pipe coupling for each
section of interphase pipe. These adjustable
couplings are attached to the center switch
pole except for triangular-upright and tiered-
upright switch mounting configurations. See
Figure 4.
Attach pipe couplings to the operating lever of
each switch pole. Each pipe coupling includes
a 3/8-inch spacer, which is used if only one
coupling is attached to the operating lever. If
two couplings are required, the spacer can be
discarded. See Figures 2 and 3.
Operating lever
Pipe coupling
Figure 2. Assemble the pipe coupling to the operating lever—interphase
pipe on both sides of operating lever.
Operating lever
Pipe coupling
Set screw
Figure 3. Assemble the pipe coupling to the operating lever—interphase
pipe on one side of operating lever.

S&C Instruction Sheet 761-515 11
Installation
Step 3
For switches that are directly connected to the
vertical operating pipe, attach a pipe-to-switch
bearing type universal coupling to the rotating
shaft extending below the switch base. See
Figure 5.
Operating lever
Main contact
Shunt contact
Opening lever
Interrupter
Open stop
Toggle
mechanism
Toggle stop
Adjustable pipe
coupling
Figure 4. Switch-Pole detail, 600-ampere switch shown. Attach the pipe
couplings to the operating lever of each switch pole.
Pipe-to-switch bearing
type universal coupling
Figure 5. For switches directly connected to the vertical operating pipe,
attach a universal coupling to the switch pole rotating shaft.

12 S&C Instruction Sheet 761-515
Installation
Attaching Couplings to
Outboard Bearings
Use the following steps to attach couplings to
the outboard bearings:
Step 4
Attach pipe coupling(s) to the outboard bearing
assembly (or assemblies) in accordance with
the item numbers specied on the erection
drawing.
Attach a pipe-to-hexagon type universal cou-
pling to the hexagonal shaft on the underside of
the outboard bearing assembly. See Figure6 as
well as Detail A-A on the erection drawing. This
coupling is used in Step 9 to attach the upper
section of vertical operating pipe.
For triangular-upright and tiered-
upright switch mounting configurations:
Attach additional pipe-to-hexagon type
universal couplings that will be used to
connect the outboard bearing assemblies.
For mounting configurations using an out-
board bearing assembly mounted between
switch poles: The outboard bearing connects
to the interphase pipe with a drag link (flat-bar
or pipe type) and an offset coupling. See Detail
A on the erection drawing. Attach one end of
the drag link to the outboard bearing crank-
arm, then attach the offset coupling to the
other end of the drag link. See Figures 7 and 8.
Installing the Switch to the
Mounting Structure
Use the following steps to install the switch to
the mounting structure:
Step 5
WARNING
DO NOT lift the switch pole-units by rigging
on the “live parts” or subject these parts to
undue stress from slings or fall lines.
Lifting the pole-units by the live parts will
damage the switch. Rough handling may
cause damage to the blades, contacts, and/
or interrupters.
Failure to lift the pole-units properly can result
in switch damage, causing improper opera-
tion, arcing, or electrical shock.
Outboard bearing
crank-arm (adjustable)
Universal
coupling
Uppermost section
vertical operating pipe
Connecting pipe section
Clamp bolts
Outboard bearing base
Stop bolt
Figure 6. Attach the universal coupling to the switch pole rotating shaft.
Typical outboard bearing configuration, upright mounted switch poles.
Outboard
bearing base
Universal
coupling
Stop bolt
Uppermost section
vertical operating pipe
Outboard bearing
crank-arm (adjustable) Drag link Offset coupling
Interphase pipe
Figure 7. Typical outboard bearing configuration, upright mounted
between switch poles, with drag link (flat-bar type).
Universal coupling
Uppermost section
vertical operating pipe
Outboard bearing base
Clamp bolts
Offset coupling
Interphase pipe
Drag link
Clevis pipe coupling
Figure 8. Typical outboard bearing configuration, vertically mounted
between switch poles, with drag link (pipe type).

S&C Instruction Sheet 761-515 13
Installation
Hoist the individual switch pole-units and
bolt them into position on the pole or structure
as shown on the erection drawing.
The pole-units should be carefully aligned on
the structure. Make sure the surface to which
the bases are mounted is flat, level, and plumb to
avoid twisting the bases when they are bolted to
the structure. Twisting will misalign the blades
and place undue stress on the insulators, result-
ing operating problems. Use shims as required.
Step 6
Mount the outboard bearing assembly (or
assemblies) in the position indicated on the
erection drawing.
Installing Pipe Couplings with
Piercing Set Screws
Step 7
WARNING
Failure to properly install pipe couplings with
piercing set screws can cause slippage of
operating pipe, resulting in improper opera-
tion of the switch, arcing, equipment damage,
or electrical shock.
To properly install the piercing set screws:
(a) Back the piercing set screw out of the
coupling so the tip does not protrude
into the body of the coupling.
(b) Insert the operating pipe section into
the coupling and nger-tighten the
clamp bolt(s).
(c) Adjust the operating pipe to the
correct length, and then tighten the
clamp bolt(s) to nal tightness.
(d) Tighten the piercing set screw,
piercing the pipe, and continue
turning until a rm resistance is felt.
(e) Make sure the clamp bolt(s) are tight.
The interphase operating pipe and rotating
operating handle use piercing set screws
to couple clamps to the operating pipe. See
Figure9. Before installing the interphase pipe
sections, check that the cutting tip of each
piercing set screw does not protrude into the
body of the coupling.
Coupling body
Clamp bolt
Piercing set screw in shipping position (cutting tip does not
protrude through body of the clamp)
Slug pierced
from pipe
Operating pipe installed, clamp bolt fully tightened, and piercing
set screw in final position
Piercing set screw
Clamp
Figure 9. Install the pipe couplings with piercing set screws.

14 S&C Instruction Sheet 761-515
Installation
Installing the Interphase Operating
Pipe
Step 8
NOTICE
To minimize time-consuming final adjust-
ments after installation, make sure that
the switch poles are in their fully Closed
position and their toggle mechanisms are
against their closed stops during installation
of both the interphase and vertical operat-
ing-pipe sections. Switch blades can be tied
to their jaw-contact members and the toggle
mechanisms can be tied to their stops.
Install the interphase pipe sections as follows:
Install the horizontal pipe sections to inter-
connect the switch poles and the outboard
bearing assembly (assemblies).
For triangular-upright or tiered-
outboard mounting configuration
switches: install the vertical pipe
sections to interconnect the outboard
bearing assemblies. Torque the clamp
bolt of each pipe coupling to final
tightness, piercing the pipe, and
continue turning until a rm resistance
is felt.
When two outboard bearings are
used in a double-offset arrangement:
install the connecting pipe between
these bearings. Torque the clamp
bolts of each pipe-coupling clamp to
nal tightness, and then tighten the
associated piercing set screw, piercing
the pipe. Continue turning until a rm
resistance is felt.
If the outboard bearing assembly is
mounted between switch poles: connect
the drag link to the interphase pipe,
using the offset coupling previously
attached to the drag link in Step 3.
Torque the clamp bolts of each pipe-
coupling clamp to nal tightness, and
then tighten the associated piercing
set screw, piercing the pipe. Continue
turning until a rm resistance is felt.
Tighten the take-up screws of the adjustable
pipe couplings to remove all play in the inter-
connecting linkage. Make sure the switch-pole
toggle mechanisms remain against their closed
stops.
Tighten the locknut on each adjustable pipe-
coupling take-up screw.

S&C Instruction Sheet 761-515 15
Installation
Installing the Vertical Operating Pipe
Step 9
S&C recommends making up each coupling
connection as work progresses from the top
down. Starting with the universal coupling
connecting the switch to the upper section of
vertical operating pipe, and continue with the
coupling between the upper section of vertical
operating pipe and the first lower section.
Continue down to the last section of pipe, and
end with the rotating operating handle.
This makes it easier to adjust for variations
in the surface and height of the wood pole or
mounting structure.
Insert the uppermost section of vertical oper-
ating pipe into the universal coupling attached
to the underside of the outboard bearing assem-
bly. See Figures 6, 7, and 8 on page 12. Back the
piercing set screw out of the body of the pipe
coupling clamp before tightening the bolts.
Torque the clamp bolts to their final tight-
ness, and then tighten the piercing set screw,
piercing the pipe. Continue turning until a firm
resistance is felt.
Step 10
Attach a pipe-to-pipe type universal coupling
to the lower end of the uppermost section of
vertical operating pipe. See Figure 10. Back
the piercing set screw out of the body of the
pipe coupling before tightening the coupling
clamp bolts.
Torque the clamp bolts to final tightness, and
then tighten the piercing set screw, piercing the
pipe. Continue turning until a firm resistance
is felt.
Uppermost section of
vertical operating pipe
Pipe-to-pipe type
universal coupling
Figure 10. Attach a pipe-to-pipe type universal coupling at the lower end
of the vertical operating pipe.

16 S&C Instruction Sheet 761-515
Installation
Step 11
Position and install the guide-bearing assembly
on the pole or structure in accordance with the
dimension shown on the erection drawing. See
Figure 11.
Guide-bearing
assembly
Figure 11. Install the guide-bearing assembly.
Step 12
Pass the next section of vertical operating pipe
up through the guide bearing and then through
the thrust bearing. The thrust bearing will rest
on the guide bearing and support the operating
pipe.
Insert the pipe section into the universal
coupling previously attached to the lower end
of the uppermost operating-pipe section. Do not
tighten the clamp bolts at this time.
While holding the pipe in this position—and
with the thrust bearing resting on the guide
bearing—tighten the piercing set screw in the
thrust bearing, piercing the pipe. Continue turn-
ing until a firm resistance is felt. See DetailB on
the erection drawing. See Figure 12.
Thrust
bearing
Intermediate section
of vertical operating
pipe
Universal
coupling
Figure 12. Install the intermediate section of the vertical operating pipe.

S&C Instruction Sheet 761-515 17
Installation
Step 13
Install a guide bearing assembly with each
additional vertical operating-pipe section posi-
tioned in accordance with the dimension shown
on the erection drawing. See Figure13. Thrust
bearings are only necessary on the uppermost
guide bearing. Use rigid couplings to join these
additional pipe sections. Before installing the
coupling, back the piercing set screws out of the
coupling body so they do not protrude into the
coupling. Torque the clamp bolts to nal tight-
ness, and then tighten the piercing set screws,
piercing the pipe. Continue turning until a rm
resistance is felt.
Step 14
At the universal coupling immediately above
the thrust bearing, torque the clamp bolts to
nal tightness, and then tighten the piercing set
screw, piercing the pipe. Continue turning until
a rm resistance is felt.▲
Rigid coupling
Guide bearing
Figure 13. Install the guide bearing for the additional pipe section.
▲If the shipment includes an S&C Type AS-1A Switch
Operator and has been specified with standard minor
modification suffix “-S9” to the erection drawing num-
ber, refer instead to S&C Instruction Sheet 769-500,
“S&C Switch Operators—Type AS-1A, Instructions for
Installation.” If the shipment includes an S&C 6801M
Automatic Switch Operator and has been specified with
standard minor modification suffix “-S16” to the erection
drawing number, refer instead to S&C Instruction Sheet
1045M-510.

18 S&C Instruction Sheet 761-515
Installation
Installing the Rotating Operating
Handle
When a key interlock is used (standard minor
modication sufx “-S6”), skip to Step 18 on
page 29.
When a Type AS-1A Switch Operator is used
(standard minor modification suffix “-S8” or
“-S9”), refer instead to S&C Instruction Sheet
769-500 for installation instructions. When an
S&C 6801M Automatic Switch Operator is used
(standard minor modification suffix “-S16”),
refer instead to S&C Instruction Sheet 1045M-
510 for installation instructions.
Step 15
Back the piercing set screws out of the handle
yoke and slide the handle assembly up the
pipe until it is in the location indicated on the
erection drawing. There should be 6 to 8 inches
of operating pipe below the operating-handle
assembly. See Figure 14.
Tighten the piercing set screws on the
operating-handle assembly enough to hold the
handle in place, but DO NOT pierce the vertical
operating pipe.
Step 16
Slide the foot-bearing assembly onto the lowest
section of pipe at the position shown on the
erection drawing. See Figure 15. Adjust the
operating handle assembly until it is two to three
inches above the foot-bearing assembly. Tighten
the piercing set screws, piercing the pipe, and
continue turning until a rm resistance is felt.
At the same time, use one of the mounting bolts
to attach one end of the grounding strap (the
end with the grounding connector attached)
to the foot-bearing assembly. The grounding
recommendations in this document may
differ from the standard operating and safety
procedures of certain electric utility companies.
Where a discrepancy exists, the operating
procedures of the electric utility apply.
If necessary to compensate for the taper
of the wood pole and to keep the vertical
operating-pipe aligned and plumb, shift the
guide bearings toward or away from the pole.
Alignment slots are provided for this purpose.
Operating handle
assembly
Vertical operating
pipe
Piercing set screws (2)
Figure 14. Install the operating handle assembly.
Grounding strap Foot-bearing
assembly
Figure 15. Install the foot-bearing assembly so the handle is two or
three inches above the handle yoke.
2-3 inches
Operating handle
assembly
Figure 16. Attach the grounding strap.
Grounding strap
U-bolt connector

S&C Instruction Sheet 761-515 19
Installation
Step 17
Fasten the free end of the grounding strap to
the lowest pipe section a few inches above the
operating-handle assembly (or key interlock)
with the U-bolt connector provided for this
purpose. See Figure 16. Connect the lower end
of the strap to a suitable earth ground using
the grounding connector provided at the end
of the strap.
The grounding recommendations in this
document may differ from the standard
operating and safety procedures of certain
electric utility companies. Where a discrepancy
exists, the operating procedures of the electric
utility apply.
Installing Operating Handle
with Key Interlock
Step 18
The interlock group includes a Superior Type
B6003-1 Mk II single- or multiple-key interlock
(or equivalent), with ⅜-inch bolt projection and
¾-inch bolt travel, locking disc, and interlock
bracket. If “provision only” is specied, the
interlock is not included.
Slide the interlock bracket, locking disc,
operating handle assembly, and foot-bearing
assembly onto the lowest vertical operating
pipe section, with the locking disc and operating
handle assembly between the interlock bracket
and the foot-bearing assembly. See Figure 17.
Figure 17. Position the interlock bracket, locking disc, operating handle
assembly, and foot-bearing assembly onto the lowest vertical operating
pipe section.

20 S&C Instruction Sheet 761-515
Installation
Step 19
Bolt the foot-bearing assembly to the pole at
the position shown on the erection drawing.
Use one of the mounting bolts to attach one
end of the grounding strap (the end with the
grounding connector attached) to the foot-
bearing assembly. See Figure 18. The grounding
recommendations within this document may
differ from the standard operating and safety
procedures of certain electric utility companies.
Where a discrepancy exists, the operating
procedures of the electric utility apply.
Foot-bearing assembly
Figure 18. Attach the foot-bearing assembly.
Step 20
Fasten the operating-handle assembly to the
lowest vertical operating-pipe section using the
piercing set screws furnished. Figure 19.
Tighten the piercing set screws on the oper-
ating handle assembly, piercing the pipe, and
continue turning until a firm resistance is felt.
Attach the interlock bracket to the foot-
bearing assembly, using the ½–13 ×1½-inch
cap screws, spacers, and ½-inch lock washers
furnished.
With the switch in the Closed position, use
the interlock bolt to position the locking disc
so the bolt enters the closed-position slot in the
disc (and will enter the open-position slot when
the switch is in the Open position).
Interlock bolt positioned
in closed-position slot
Operating-handle
assembly
1/2–13 11/2-inch cap
screws, spacers,
and lockwashers
Figure 19. Fasten the operating-handle assembly.