S&C AS-1A Guide

S&C

Switch

Operators

-

Type

AS-1A

INSTRUCTIONS

For Installation

ITABLE OF CONTENTS

Section

Page Number

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

....

1

SAFETY INFORMATION

Understanding

Safety-Alert

Messages

.....................

4

Following Safety

Instructions

. . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Replacement

Instruct10ns

and

Labels. . . . . . . . . . . . . . . . . . . . . 4

INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

MANUAL OPERATION . . . . . . . . .

.......................

8

ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

IINTRODUCTION

Qualified

Persons

A

WARNING

The

equipment

covered

by

this

publication

must

be

installed,

operated,

and

maintained

by

qualified

persons

who

are

knowledgeable

in

the

installation,

operation,

and

maintenance

of

overhead

electric

power

distribution

equipment

along

with

the

associated

hazards.

A qualified

person

is

one

who

is

trained

and

competent

in:

•

The

skills

and

techniques

necessary

to

distinguish

exposed

live

parts

from non-live

parts

of

electrical

equipment.

•

The

skills

and

techniques

necessary

to

determine

the

proper

approach

distances

corresponding

to

the

voltages

to

which

the

qualified

person

will

be

exposed.

• The

proper

use

of

the

special

precautionary

tech-

niques,

personal

protective

equipment, insulating

and

shielding materials,

and

insulated

tools

for

working

on

or

near

exposed

energized

parts

of

elec-

trical

equipment.

These

instructions

are

intended

only

for

such

quali-

fied

persons.

They

are

not

intended

to

be

a

substitute

for

adequate

training

and

experience

in

safety

proce-

dures

for

this

type

of

equipment.

II

S&C ELECTRIC

COMPANY•

Chicago

S&C ELECTRIC CANADA

LTD.•

Toronto

I

Section Page Number

INSPECTION SCHEDL'LE AND PROCEDURES

.............

18

CHECKING SWITCH OPERATOR AND

ALDlJTI-RFPTER® SWITCH POSITIONS

.................

20

APPENDIX

Amended Travel-Limit

Adjustment

Procedure

for

Switch

Operators

Furnished

with

Source-Transfer

Control Compatibility

.................................

20

I

The

S&C

Switch

Operator-Type

AS-IA

is

a high-speed

operator,

with

an

operating

time

not

exceeding .75 sec-

ond.

It

is

expressly

designed

for

power

operation

of

S&C

Alduti-Rupter

Switches-Outdoor

Distribution

and

S&C

Alduti-Rupter

Switches

with

Power

Fuses-Outdoor

Dis-

tribution, having rotating

type

operating

mechanisms.

The

high

operating

speed

of

the

S&C

Switch Opera-

tor-Type

AS-IA

provides

sufficient moving-contact

velocity

in

the

Alduti-Rupter Switch

interrupters

to

ensure

full

interrupting

capability

and

long

operating

life.

The

operator's

high

operating

speed

also

provides

adequate

closing velocity for 25/34.5-kv

and

34.5-kv Three-Pole

Side-Break

Integer

Style

and

Three-Pole Vertical-Break

Integer

Style

switches

such

that

the

Side-Break

Integer

Style

switches

have

a one-tjme duty-cycle fault-closing

rating

of

15,000

amperes

rms

asymmetrical,

and

the

Verti-

cal-Break

Integer

Style

switches

have one-time duty-cycle

fault-closing ratings

of

20,000

or

30,000

amperes

rms

asymmetrical

for

switches

rated

600

amperes

or

1200

amperes,

respectively.

For

power

operation

of

S&C

Alduti-Rupter

Switches-Outdoor

Distribution

and

S&C

Alduti-Rupter

Switches

with

Power

Fuses-Outdoor

Distribution,

having

reciprocating

type

operating

mechanisms,

the

S&C

Switch

Operator-'fype

AS-10

is

offered.

INSTRUCTION

SHEET

769•500

Page 1 of 23

April 22, 1996

S&C

Switch

Operators

-

Type

AS-1 A

IINTRODUCTION -Continued

For

power

operation

of

S&C Circuit-Switchers, S&C

Switch

Operators-Types

CS-IA

and

CS-10

are

available.

For

power

operation

of

S&C Line-Ruptersr'1,

the

S&C

Switch

Operator-Type

LS-2

is

available.

For

switches

of

other

manufacture,

the

S&C

S~itch

Operator-Type

LS-1

is

available.

The

LS-1

is a

low-speed

operator,

with

an

operating

time

of

4

to

7

seconds.

It

is

designed

for

power

operation

of

outdoor

high-voltage dis-

connects

and

interrupter

switches

for

which

this

low

operating

speed

is

appropriate.

S&C

Switch

Operators-Type

AS-lA

include

the

following

features

as

standard:

• Built-in

internal

decoupling

mechanism,

operable

by

integral

external

selector

handle,

~ith

padlocking

pro-

visions

and

automatic

mechanical

locking

of

output

shaft.

Laminated

safety-plate

window

permits

"visible

air-gap" verification

of

complete

disengagement

of

output

shaft.

•

Open-close

pushbuttons,

externally

operable,

with

pad-

lockable

cover.

• Built-in

nonremovable,

foldaway

manual

operating

handle.

•

Mechanical

position

indicators

for

both

switch

operator

and

Alduti-Rupter

Switch

"open"

and

"closed"

positions.

• Non-reset

electric

operation

counter.

•

Laminated

safety-plate

window

for

inspection

of

built-

SWITCH

OPERATORS-

Type

AS-1

A

Application

Motor and Maximum

Rating of Operating Time,

High-Voltage High-Voltage Control Voltage SecondsG)

Device Device

12 v de

75

♦

S&C

48vdc

75

♦

Alduti-Rupter 7 2 thru

46

kv 125 v de

.75

♦

Switch

115v60hz

75

♦

230v

60 hz

75

♦

(i)

Based

on

nnmmum

battery

and

extnnal

eontrol

wJTe

size rf'quirP-

ments

'>pPc1fied

m

S&C

Data

BullPtm 769-60,

oppratmg

tmw

will hP

Jpi,s

I1

largPr-than-mm1mum battPry

'l!ZP

and/or

extPmal

eontrol

wire

s1zp

1s

utilized.

♦

Apph<'ablP

to

Aldut1-Rupter Sw1tehPs with operatmg-mrc

hamsm

rota-

non

of

90

dPgret>s, opPratmg time will bP

grc>atPr

1f

switch

ha.~

muPasPcl

operatmg-mPehamsm rotation. 'lyp1cal

nmning

spPPd

of

sw1teh

operator

output

~haft· 26 revolut10ns

per

mmute.

769-500

INSTRUCTION

SHEET

Page 2 of 23

April 22, 1996

in

internal

decoupling

mechanism,

mechanical

position

indicators,

and

operation

counter

(and

position-indi-

cating

lamps,

if

furnished

as

accessmies

).

•

Foolproof

recoupling.

Impossible

\o\-'lth

position-index-

ing

drums

to

couple

the

switch

operator

and

the

Alduti-Rupter

Switch

"unsynchronized."

•

Fingertip

precision

adjustment

of

output-shaft

rotation

using

self-locking spring-biased cams.

•

Eight-pole

auxihary

switch,

coupled

to

motor,

with

fingertip

precision

adjustment

of

individual

contacts

using

self-locking

spring-biased

cams.

• Antifriction

bearings

throughout;

tapered

roller

bear-

ings

for

all high-torque gear-train shafts.

•

Two-pole

pull-out

fuseholders

for

space

heater

and

(except

for

12-volt

de

models)

motor

circuit.

(For

12-volt

de

models,

a

two-pole

disconnect

switch

is

used

in

series

with

a

motor-circuit

fuse.)

• Weatherproof,

dustproof

enclosure,

equipped

with

120/240-volt

ac

space

heater,

factory-cmmected

for

240-volt

ac

operation.

Can

readily

be

field

reconnected

for

120-volt

ac

operation.

• Tan1per-resistant

design-welded

enclosure;

baffled

louvers;

gasketed.

flanged

door

openings;

cam-action

door

latch;

provisions

for

padlocking.

•

Foul-weather

accessibility

to

interior

of

enclosure.

Access

is

by

door

rather

than

by

removal

of

entire

enclosure.

Minimum Locked- Schematic

Rotor Torque at Accelerating Catalog Wiring

Current, Diagram

Rated Control Amperes Number Drawing

Voltage, Inch-Lbs. Number

18 500 -

38854R4

■

CDR-3127R1

21

500

80

38847R4-A

21

500

30

38847R4-B CDR-3113R1

18 000 46 38847R4-D CDR-3128R1A

18000

23 38847R4-E

I

■

Indudes

12-volt

ck

battery

and

ecmc;tant-hurdPn

battery

eharger

for

c·onnect10n

to

an

&11.:C'

;}O-Volt-AmpPrP

PotPntI,11 f)pv1cc

or

othPr 120-volt

G0-lwr1z

soUH'l'

A CUR-:l205Hl for Catalog :-.Jumbprs

;JS8-!7R,!-D

and

:l8847R4-E when

funushed

with smm·c-transfpr eontrol compat1h11lty ('>uffix

''-lll")

S&C ELECTRIC

COMPANY•

Chicago lilli

S&C ELECTRIC CANADA

LTD.•

Toronto

gJi

IINTRODUCTION -Continued

S&C

Switch

Operator

Catalog

Number

38854R4

includes a 12-volt

de

battery

and

constant-burden

battery

charger

for

connection

to

an

S&C

30-Volt-Ampere Poten-

tial Device

or

other

120-volt 60-hertz source.

Switch

operator

catalog

numbers

are

suffixed

with

one

or

more

letters. The first

letter

following

the

catalog

number

designates

the

motor

and

control voltage (

except

for Catalog Number38854R4):

ACCESSORIES

Item

Deletion

of

Externally Operable Open-Close Pushbuttons

Space

HeaterThermostat

Suffix

-A

-B

-D

-E

Voltage

48volts

de

125volts

de

115 volts

60

hertz

230 volts

60

hertz

i

Other

suffix letters which may

be

added

to

the

switch

operator

catalog

number

indicate

the

inclusion

of

optional accessories

as

follows:

Suffix Added to

Switch Operator

Catalog Number

-J

-K

Key Interlock with Switch, locksAldut1-Rupter Switch open and disconnects motor-control circu1tG)

-L

Pos1t1on-lndicating Lamps (one red,

one

green), mounted

1ns1de

the enclosure

-M

Extra Auxiliary Switch

(1nd1v1dually

adjustable contacts),

4-PST

(coupled to motor)G)®

-Q

Source-Transfer Control Compatibility Permits

use

of

switch operator with

S&C

Micro-AT Source-Transfer Control in Weather-

-U1

proof EnclosureCD®

Duplex Receptacle

and

Convenience-Light Lampholder with Switch -V

Extra Auxiliary Switch (individually adJustable contacts),

8-PST

(coupled to Alduti-Rupter

Switch)©

-W

Remote-Control Blocking Switch, prevents remote operation

of

switch operator

when

the protective

cover

for the

-Y

externally mounted open-close pushbuttons Is openG)

Extra Aux1hary Switch (ind1v1dually adJustable contacts),

12-PST

(coupled to Aldut1-Rupter

Switch)©

-2

G)

Type

AS-lA

Switch

Operators

specified

with

source-transfer

con-

trol

compat1b11ity

(suffix

"-Ul")

cannot

be

furmshed

with

key

inter-

lock

with

switch

(suffix

"-L''),

extra

auxiliary

switch

coupled

to

motor

(suffix

"-Q"),

or

remote-control

blockmg

switch

(suffix

"-Y"),

® Reqmred

for

some

automatic-transfer

and

sectional1zmg

schemes.

S&C ELECTRIC

COMPANY•

Chicago

S&C ELECTRIC CANADA

LTD.•

Toronto

® Available

as

an

optional

accessory

only

with

Type AS-lA

Switch

Operator

Catalog

Numbers

38847R4-D

and

38847R4-E, utilizmg 115-volt

60-hertz

or

230-volt 60-hertz

motor

and

control

voltage

©

The

8-PST

extra

auxiliary

switch

(suffix "-W")

cannot

be

furnished if

the

12-PSTvers10n (suffix ''-Z")

IS

specified,

and

vice

versa

INSTRUCTION

SHEET

769-500

Page3

of 23

April 22, 1996

S&C

Switch

Operators

-

Type

AS-1A

ISAFETY INFORMATION

Understanding

Safety-Alert

Messages

There

are

several

types

of

safety-alert

messages

which

may

appear

throughout

this

instruction

sheet

as

well

as

on

labels

and

tags

attached

to

the

'fype AS-

lA

Switch

Operator.

Familiarize

yourself

with

these

types

of

mes-

sages

and

the

importance

of

the

various

signal

words,

as

explained

below.

A

DANGER

"DANGER" identifies

the

most

serious

and

immediate

hazards

which

will

likely

result

in

serious

personal

injury

or

death

if

instructions, including

recommended

precautions,

are

not

followed.

A

WARNING

"WARNING" identifies

hazards

or

unsafe

practices

which

can

result

in

serious

personal

injury

or

death

if

instructions, including

recommended

precautions,

are

not

followed.

A

CAUTION

"CAUTION" identifies

hazards

or

unsafe

practices

which

ca,n

result

in

minor

personal

injury

or

product

or

property

damage

if

instructions,

including

recom-

mended

precautions,

are

not

followed.

A

NOTICE

"NOTICE" identifies

important

procedures

or

require-

ments

that,

if

not

followed.

can

result

in

product

or

property

damage

if

instructions

are

not

followed.

769-500

INSTRUCTION

SHEET

Page 4 of 23

April 22, 1996

Following

Safety

Instructions

A

NOTICE

Thoroughly

and

carefully

read

this

instruction

sheet

before

installing

your

S&C

TypeAS-

lA

SwitchOpera-

tor.

i

If

you

do

not

understand

any

portion

of

this

instruction

sheet

and

need

assistance,

contact

your

nearest

S&C

Sales Office

or

S&C

Authorized Distributor,

or

call

S&C

Headquarters

at

(312) 338-1000, Monday

through

Friday

between

8:30

AM

and

5:00 PM Central

Standard

Time. (In

Canada, call

S&C

Electric

Canada

at

(416) 249-9171.)

Replacement

Instructions

and

Labels

If

you

need

additional

copies

of

this

instruction

sheet,

contact

your

nearest

S&C

Sales Office

or

S&C Authorized

Distributor,

or

call

S&C

Headquarters.

It

is

important

that

any

missing, damaged,

or

faded

labels

on

the

equipment

be

replaced

immediately.

Replacement

labels

are

available

by

contacting

your

near-

est

S&C

Sales Office. S&C Authorized Distributor,

S&C

Headquarters,

or

S&C

Electric Canada.

S&C ELECTRIC

COMPANY•

Chicago

II

S&C ELECTRIC CANADA

LTD.•

Toronto

IINSTALLATION

Step

1

Mount the switch

operator

as

indicated on the erection

drawing. Then

attac

h a flexible coupling

to

the

output

shaft

of

the switch operator. See Figure

l.

Thr

ead

the

attachment

bolts

throu

gh

the

flexible coupling plate

and

through

the

co

upling flange on the

output

shaft

. Tighten

the

bolts

to

draw

the

flexible plate flush against the flang

e;

I

this will deform

the

threads

in

the

flexible plate, resulting

in a bindin

g,

nonslip

co

nnection. Install and tighten

the

self-locking nuts. Do

not

us

e lockwashers with the flexible

co

upling

attachment

bolts.

Remove

the

clamp bolts

and

set

aside

the

deta

chable

half

of

the

flexible coupling.

Attachment bolt Vertical operating pipe

\

Flexible coupling

plate

Coupling flange

Self-locking nut

Pushbutton

protective cover

Switch operator

output shaft

Door handle

Figure 1. Exterior view

of

switch operator.

S&C

ELECTRIC

COMPANY•

Chicago

S&C ELECTRIC CANADA

LTD.•

Toronto

..,.

i-----

Flexible coupling

Alduti-Rupter switch

position indicators

Manual operating

handle

(in

storage

position)

Switch operator

nameplate

INSTRUCTION

SHEET

769-500

Page 5

of

23

April

22, 1996

S&C

Switch

Operators

-

Type

AS-1A

IINSTALLATION -Continued

Step

2

Make certain

that

the

cutting tips

of

the

piercing

set

screws

do

not

protrude

through (1) the body

of

th

e

fle

x

i-

ble coupling

on

the switch

operator

output

shaft

and

(2)

the body

of

the universal coupling and

thrust

bearing

at

the

upper

guide bearing and universal coupling groups (

or

the

body

of

the rigid coupling if

an

intermediate guide

bearing assembly is used).

Pass

the

lowest

section

of

vertical operating pipe up

through

the

guide bearing

and

then

through

the

thrust

bearing

and

insert

the

pipe

section

into

the

universal

co

u-

pling (or,

if

an

intermediate guide bearing assembly is

used,

pass

the vertical-operating-pipe

section

up

through

the guide bearing and

insert

the pipe

section

into

the

rigid coupling). Do

not

tighten

the

coupling clamp

or

piercing

set

screw

at

this time. (The

lower

end

of

the

Pushbutton protective

cover (open)

Remote-control blocking

switch (Catalog Number

Suffix "-Y")

Open/close pushbuttons

Arrow plate

Extra auxilliary switch,

8-PST (Catalog Number

Suffix "-W"); 12-PST version

(Catalog Number Suffix "-Z")

is similar

Motor contactor,

opening

Motor contactor,

closing

I

lowest

section

of

vertical operating pipe will,

of

course,

be

cradled

in

the

open

flexible coupling

attached

to

the

output

shaft

of

the

switch

operator.)

While holding

the

pipe

section

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,

and

continue

turning

until a firm resis-

tance

is felt. At

the

universal coupling,

tighten

the

clamp

bolt

to

final tightness,

then

tighten

the

associated

piercing

set

screw,

piercing

th

e pipe,

and

continue

turn-

ing until a firm

resistance

is felt.

(If

an

intermediate

guide

bearing

assembly

is used, tighten

the

clamp

bolt

on

the

rigid coupling

to

permanent

tightness;

then

tighten

the

associated

piercing

set

screw,

piercing

the

pipe,

and

continue

turning

until a firm

resistance

is felt.)

Operation counter

(optional on earlier models)

Position-indexing drums

Travel-limit switch, 2-PST

(not visible

in

photo)

-

--

Auxiliary switch, 8-PST

i--

--

Extra auxiliary switch,

4-PST (Catalog Number

Suffix "-Q")

Motor-circuit two-pole

-----

pull-out fuseholder

Manual operating handle interlock switch

and mechanical blocking rods

Conduit-entrance

plate

Figure

2.

Interior views

of

switch operator.

769-500

INSTRUCTION

SHEET

Page 6

of

23

April

22, 1996 S&C ELECTRIC

COMPANY•

Chicago

It

S&C ELECTRIC CANADA LTD.•

Toronto

IINSTALLATION -Continued

Step

3

Mark the conduit-entrance location for the control-circuit

wiring

on

the

co

nduit-entrance plate in the bottom

of

the

switch operator enclosure. See Figure

2.

Remove

the

conduit-entrance

plat

e a

nd

cut

out

the

required opening. Replace

the

plate

and

make

up

the

entrance

fittings. Apply sealing

compound

(provided

with

each

switc

h

operator)

when

replacing

the

conduit-

e

ntranc

e plate. Verify

that

the

entrance

fittings

are

properly

sealed

to

water

ingress.

Pushbutton protective cover (closed)

uplex receptacle and convenience-

;iht lampholder with switch (Catalog

umber Suffix "-V")

1structions, switch operator

·avel-limit adjustment

Instruction

manual and holder

Step

4

A

CAUTION

Remove the two-pole pull-outfuseholders for the

motor

circuit and space-heater circuit. See Figure

2.

Failure to remove these fuseholders can result in

accidental energizing

of

the

operator

after the external

connectio

ns

have

been

completed.

Reinsert the fuseholders only when directed to do

so

in the

steps

that

follow.

Remove the blocking from the motor contactors.

I

Connect the external control-circuit wiring (including

space-heater

source

leads) to the terminal blocks

of

the

switch

operator

in accordance with the wiring diagram

furnished.

For

12-volt de models, mount the battery in the

batte

ry compartment and

connect

it to the battery cables

which are located

at

the

rear

of

the battery compartment.

Position-indicating lamps

(Catalog Number Suffix

"-

M

")

Brake-release solenoid

Terminal block

A

NOTICE

Space-heater circuit two-pole

pull-out fuseholder Space heater

These illustrations are not applicable

to 12-volt

de

models. Those models

utilize a number of different compo-

nent parts and a different internal

layout. Among the differences is

in-

clusion of a constant-burden battery

charger mounted

on

a swingout pan-

el,

as well as the use of a separate

two-pole control-source disconnect

switch

in

series with control-source

fuses (located

on

the inside rear

wall)

in

lieu of the motor-circuit two-

pole pull-out fuseholder. Those mod-

els, further, include a separate com-

partment beneath the enclosure,

which houses the 12-volt

de

battery.

S&C

ELECTRIC

COMPANY•

Chicago

S&C

ELECTRIC

CANADA

LTD.•

Toronto

INSTRUCTION

SHEET

769-500

Page 7

of

23

April 22, 1996

S&C

Switch

Operators

-

Type

AS-1A

I

INSTALLATION -Continued

A

NOTICE

Direct-current switch operators are furnished with

polarity-sensitive motors.

Observe the polarities indicated

on

the wiring dia-

gram for switch

operator

motor

when making external

control-circuit connections.

A

CAUTION

Do

not

make unauthorized changes in the wiring

of

this

switch operator. Unauthorized changes may result in

equipment damage

or

personal injury.

To

make a control-circuit modification, requ

est

a

revised wiring diagram from

S&C

Electric Company.

Diagram

must

meet

with the approval

of

both

the

user

and

S&C

Electric Company.

I

MANUAL OPERATION

Before proceeding further, familiarize yourself with the

operation

of

the manual operating handle and the selector

handle, as described

on

the switch

operator

nameplate on

Piercing set screws

Manual operating handle

Latch knob

Figure

3.

Manual operation.

769-500

INSTRUCTION

SHEET

Page 8

of

23

April

22, 1996

A

NOTICE

Control-circuit

wmng

must

meet

mm1mum size

requirements, as specified in

S&C

Data Bulletin 769-60

and

on

the switch

operator

wiring diagram furnished.

I

the right-hand side

of

the enclosure

and

in the following

Steps

5,

6,

and

7.

See Figures 3

and

4.

m...

,--------

Vertical operating pipe

Selector handle

(in coupled position)

Switch operator

nameplate

S&C ELECTRIC

COMPANY•

Chicago

It

S&C ELECTRIC

CANADA

LTD.•

Toronto

I

MANUAL

OPERATION -

Continued

A

CAUTION

Do

not

manually

open

or

close

the

switch

operator

while

the

Alduti-Rupter Switch is energized.

Operating

the

switch

under

reduced

operating

speed

may

cause

excessive arcing, resulting in short-

ened

interrupter

life,

or

damage

to

the

interrupters.

If

switch

operator

control voltage is

not

available

and emergency manual opening is absolutely required,

crank

the

manual operating handle

rapidly

throughout

its full travel.

Do

not

stop

or

hesitate

part

way.

To

avoid closing into a fault, never close

the

switch

manually.

Step

5

To

operate

manually:

Pull

the

latch

knob

on

the

hub

of

the

manual

operating

handle

and

pivot

the

handle

forward slightly from its

storage

position. Release

the

latch

knob

while continuing

to

pivot

the

handle

forward

to

lock

it

into

the

cranking

position. See Figure

3.

(As

the

handle

is

pivoted

forward

the

motor

brake

is

mechanically released,

both

leads

of

the

control

source

are

automatically

disconnected,

and-except

for 12-volt

de

models-both

the

"opening"

and

"closing"

motor

contactors

are

mechanically

blocked

in

the

open

position.)

If

desired, during manual operation,

the

switch opera-

tor

may also

be

disconnected from

the

control

source

by

removing

the

motor-circuit two-pole pull-out fuseholder,

located

on

the

right-hand inside wall

of

the

enclosure.

To

return

the

manual operating handle

to

its storage

position, pull

the

latch knob

and

pivot

the

handle approxi-

mately

90

degrees. The handle will

then

be

disengaged

from the switch

operator

and may be

rotated

freely in

either direction

to

its storage position. Complete

the

handle storage

by

pivoting

the

operating handle

backward

approximately 90 degrees until it latches in

the

storage

position.

Note

that

the

manual operating handle may

be

disen-

gaged from

the

switch

operator

mechanism

at

any posi-

tion

of

the

handle.

Always padlock

the

handle in its storage position.

Step

6

To

decouple:

The integral external

selector

handle, for

operation

of

the

built-in internal decoupling mechanism,

is located

on

the

right-hand side

of

the

switch

operator

enclosure. See Figure

3.

Swing

the

selector

handle upright

and

slowly

rotate

it clockwise

50

degrees

to

the

decou-

pled position. See Figure

4.

This decouples

the

switch

operator

mechanism from

the

switch

operator

output

shaft. Then lower

the

selector handle

to

engage

the

lock-

ing tab. When

thus

decoupled,

the

switch

operator

may

be

S&C ELECTRIC

COMPANY•

Chicago

S&C ELECTRIC CANADA

LTD.•

Toronto

I

operated

either manually

or

electrically without operating

the

Alduti-Rupter Switch. When

the

selector

handle is in

the

decoupled position,

the

output

shaft

is prevented from

moving by a mechanical locking device located within

the

switch

operator

enclosure. During

the

intermediate seg-

ment

of

the

selector

handle travel, which includes

the

position

at

which actual disengagement (

or

engagement)

of

the

internal decoupling mechanism occurs,

the

motor-

circuit

source

leads are momentarily disconnected

and

(except

for 12-volt de models)

both

the

"opening"

and

"closing"

motor

contactors

are mechanically blocked in

the

open

position. Visual inspection, through

the

observa-

tion window, will verify

whether

the

internal decoupling

mechanism is in

the

coupled

or

decoupled position. See

Figure

5.

Padlock

the

selector

handle in eitherposition.

Selector handle

(being turned to

decoupled position)

Figure

4.

Selector handle operation.

INSTRUCTION

SHEET

769-500

Page 9 of 23

April 22, 1996

S&C

Switch

Operators

-

Type

AS-1A

IMANUAL OPERATION -Continued

Step

7

To couple: Manually

operate

the

switch

operator

to

bring

it

to

the

same

position (

ope

n

or

closed)

as

the

Alduti-

Rupter Switch. The

sw

it

ch

operator

position indicator,

se

en

through

the

observation window, will

show

when the

approximate

open

or

closed position

has

been

attained.

See Figure 5. (The position indicator for

th

e Alduti-Rupter

Switch, l

oc

at

ed

on the output-shaft

co

ll

ar

of

the

sw

itch

IADJUSTMENTS

A

CAUTION

Remove the

tw

o-pole pull-outfuseholders for

the

motor

circuit a

nd

space-heater circuit. See Figure

2.

Failure

to

remove fuseholders

can

re

su

lt in acci-

dental energizing

of

the

operator

after

the

externa

l

co

nn

ections have

been

completed.

Reinsert fuseholders only when directed

to

do

so

in

the

steps

that

follow.

Make certain

that

th

e main

contacts

on all three switch

poles are fully closed and, where applicable,

the

switch

toggle mechanisms are in an overtoggle position agai

nst

their respective closed stops. Refer to the instruction

sh

eet

furnished with

the

Alduti-Rupter Switch.

With the

selector

handle in

th

e coupled position, manu-

ally

crank

the switch

operator

to

the

fully closed position,

as

indicated by

the

switch

operator

position indicator. See

Figure 5.

At

the switch

operator

output

shaft

, replace

the

detach-

able portion

of

the coupling clamp. Make

ce

rtain

that

the

cutting tips

of

the

piercing

set

screws

do n

ot

protrude

I

operator, will

be

aligned later.)

To

move the

switch

opera-

tor

to

the

exact

position for coupling,

turn

the manual

operating handle slowly until

the

position-indexing drums

ar

e numerically aligned. Then

sw

ing

the

selector

handle

uprig

ht

a

nd

rotate it

count

erclockwise to

th

e

co

upled

position. Lower

the

handle

to

engage

th

e lo

ck

ing tab. The

sel

ector

handle is now in the

co

upl

ed

position.

I

through the body

of

the

coupling. Torque

th

e flexible

co

u-

pling clamp bolts equally to final tightness

so

that

the

clamp pulls down evenly on

th

e vertical-operating-pipe

section. Then tighten

the

associated piercing

set

screws,

piercing the pipe, and

co

ntinue turning until a firm resis-

tance

is

fe

lt. See Figure

3.

Step

9

With

the

selector

handle

in

the coupled position,

crank

the Alduti-Rup

te

r Switch to the fully

open

position,

then

to

the

fully closed position, and in

ea

ch position accu-

rately align

th

e switch position indicators

on

the

output-

shaft collar

of

the switch

operator

with

th

e alignment

arrow

below. S

ee

Fi

gure

1.

Each

Alduti-Rupter Switch

po

sition indi

cator

can

be shifted after loos

en

ing the hex-

h

ea

d

screws

which fasten

it

to

the

output-shaft collar.

Tighten

these

screws

after making the above alignments.

For

Type

AS-lA

Switch

Operators

furnished

with

Source-Transfer

Control

Compatibility

(suffix

"-Ul"),

omit

Steps

10

through

17

and,

instead,

follow

the

step-by-step

procedure

out-

lined

in

the

Appendix.

Position-indicating lamps

(Catalog Number Suffix "-M")

Internal decoupling

mechanism (in decoupled

position)

Arrow

plate

Position-indexing drums

Figure

s.

Views of switch operator through observation window.

769-500

INSTRUCTION

SHEET

Page 10

of

23

April

22, 1996

Internal decoupling

mechanism

(in

coupled position)

S&C ELECTRIC

COMPANY•

Chicago

iD

S&C ELECTRIC CANADA

LTD.•

Toronto

S&C AS-1A Guide

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