User manual | Instruction Sheet 716-504 [English, 2 MB, 11/29/1993]

S&C Series 2000 Circuit-Switchers

Model

2020

Outdoor Transmission

and Side-Break Power-Operated

Disconnect, 69 kv through

138 kv

INSTRUCTIONS

For Field Assembly and Installation

TABLE

Section

INTRODUCTION

Page Number Section Page Number

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

1 INSTALLATION

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

BEFORE STARTING INSTALLATION

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

OPERATION

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

.19

INTRODUCTION

Trip and close pushbuttons located inside operator enclosure.

The equipment covered by this publication must be selected for a specific application and it must be installed, operated, and maintained persons who by qualified are thoroughly trained and who understand any hazards that may be involved. This publication is written only for such qualified persons and is not intended to be a substitute for adequate training and experience in safety procedures for this type of equipment.

Manual trip lever, for tripping interrupters

in

the

Manual charging handle,

for

opening disconnect after interrupters have been manually tripped open-in the event control voltage has been lost.

Charged and discharged indicators for stored-energy mechanism.

Non-reset electric operation counter.

General

The following instructions are for field assembly (erec- tion) and installation of S&C Series 2000 Circuit-

Switchers Model 2020-With Vertical Interrupters and

Side-Break Power-Operated Disconnect, rated 69 kv through

138 Interrupters

Series 2000 Circuit-Switchers employ single-gap SF6 puffer-type interrupters designed to close the circuit in 6 cycles, interrupt the circuit in 6 cycles, and maintain rated dielectric strength when open. These dual-function interrupters are factory-fied to full pressure under controlled conditions and then permanently sealed. Field fiuing is neither necessary nor possible, thus eliminating the risk of contaminating the interrupting medium.

Operator

kv.

See Figure

1.

The interrupters are driven by

a

single, stored-energy mechanism located

at

ground level in

a

48-volt dc,

125-volt dc, or 115-volt 60-hertz operator furnished with the Circuit-Switcher. Refer to the “STANDARD

FEATURES”

table on page and also Figures 18 and 20.

This operator includes the following features:

Eight nonadjustable single-pole double-throw auxiliary-switch contacts which interrupters. follow t h e

Weatherproof, dustproof enclosure.

Decoupling mechanism which allows decoupling and locking of disconnect-blade power train in open position, permitting operational checkout of interrupters, stored-energy mechanism, and relaying equipment without closing the high-voltage circuit.

Two

individually adjustable auxiliary-switch contacts which follow the disconnect-blade power train and operator when coupled, operator only when decoupled. trip-free capability should the Series 2000 Circuit-

Switcher be inadvertently closed into

a

fault sensed by user-furnished relaying, the mechanism w trip immediately. To accomplish trip-free operation, the mechanism

utiljzes two

spring assemblies: one for closing, one for opening. Both springs are charged by the operator motor before the Series 2000 Circuit-

Switcher can be closed. Recharging time after

a

trip operation is approximately

5

seconds.

Supersedes lnstructlon Sheet 716-504 dated 11-29-93 @1994

S&C ELECTRIC COMPANY Chicago Page

S&C ELECTRIC CANADA LTD. Toronto

INSTRUCTION SHEET

16-504

1 of

23 November

29, 1993

SCLC Series 2000 Circuit-Switchers

Model

2020

Outdoor Transmission

and Side-Break Power-Operated

Disconnect, 69 kv through 138 kv

llNTRODUCTlON

Power Train

The operator directly drives the interrupters open and cloe&d through

a

simple, high-speed power train leading from the top of the operator, through

a

horizontal interphase linkage enclosed in a steel-sheathed box- type base, to reciprocating-action insulated operating rods which pass through the center support columns. of insulating

The operator also drives the disconnect open and closed through

a

low-speed power train which rotates the insulating support columns. The disconnect is capable of opening and closingwithout hesitation under

%-inch ice formation.

A

decoupling mechanism allows decoupling and locking of the disconnect-blade power train in the open position, permitting operational checkout of the interrupters, the stored-energy

TURES''

table on page 3. Anchor bolts are furnished when specified separately.

Usual Operating

Conditions

Series

2000

Circuit-Switchers w perform

as

intended at temperatures within the range of -40°C to +40"C,

at

altitudes of up to

5000

feet, and at wind loadings

80

miles per hour. Further,

Switchers, when installed with the recommended S&C anchor bolts and with flexible-conductor connections at all

six

terminal pads, are capable of withstanding seismic loading of 0.2

g

ground acceleration in any direction,

as as

performing

as

intended during such loading and afterward. For applications

at

tempera- at higher wind loadings,

at

higher altitudes,

or

where higher seismic withstand capabilities are required, refer to the nearest

S&C Sales Office. the high-voltage circuit.

Permanently lubricated bearings are used through- out both the high-speed and low-speed power trains.

The insulating support lubricated columns are filled with

a dielectric

filler which prevents contamina- tion from affecting the dielectric integrity

of

the column or the insulated operating rod. An aerator is utilized at the upper end of each insulating support column to eliminate water being pumped-in due to pressure differentials caused by temperature cycling.

Inspection

Schedule and

Procedures

To assure Series 2000 Circuit-Switcher's continued proper performance, it should be inspected in accordance with

S&Cs

recommended schedule and procedures contained in S&C Instruction Sheet 716-590.

Catalog Number

Description

The following table lists the basic catalog numbers and ratings of Model 2020 Series 2000 Circuit-Switchers.

Mounting

Pedestals

Series

2000

Circuit-Switchers are furnished with mounting pedestals. Refer to the

"STANDARD FEA-

furnished are stamped on the nameplate located on the door of the operator.

MODEL 2020-With Vertical Interrupters and Side-Break Power-Operated Disconnect

Rating

Kv Amperes, Rms

Nom. Max BIL

Cont.

72.5

350

1200

Mom.

000

Short Time

1-Sec.

40 000

Fault-Closing,

Duty-Cycle,

[email protected]

40 000

121

115 40 000 40 000

Phase

Spacing,

Inches

138 650 145 1200

The one-time duty-cycle fault-closing rms asymmetrical is 1.6 times the symmetrical

64,000 amperes). value listed (or

40 000 40 000

Circuii-

Switcher

Catalog

Number

397436

397736 a4 397738

102 397838 a4 397739

102 397839

7 1

INSTRUCTION SHEET

Page 2 of 23

November 29, 1993

S&C ELECTRIC COMPANY Chicago

S&C ELECTRIC CANADA LTD. Toronto

INTRODUCTION

Suffues to the basic catalog number specify operator pedestal height, control voltage, space-heater voltage, and mounting standard features table:

STANDARD FEATURES

Feature

Item

Operator Control Voltage

Mounting Pedestal Height

125 v dc

115v60hz

120 Inch inch

216

inch

240

Inch v

240 v

Operator Space-Heater Voltage

(Anchor bolts are specified separately.)

The basic catalog number may

also be suffixed

to

with

the following table: specify one

or

more optional features, in accordance

’

Suffix

Added

to Circuit-switcher

Catalog Number Descrfption

-A

-B

-D

-E8

-E10

-E12 144

-HZ

in accordance with the following

OPTIONAL FEATURES

Item

Grounding Switch, manual, three-pole, group-operated,

64,000

for current transfer at hmge end of grounding-switch blades; blades parallel to pole-unlt bases when in open position. Grounds jaw-contact terminal pads

Deletion of Trip and Close Pushbuttons located inside operator enclosure

Space Heater Thermostat for operator

Key Interlock located inslde operator enclosure. Key may be removed when interrupters are tripped-thereby

Suffix

Added to

Circuit-Switcher

-G2

-J

-K

-L1

Key

Interlock mounted on grounding-switch manual operating handle. Works in conjunction with Key interlock

Option Suffix “-L1” to guard against operatmg grounding switch with disconnect blades closed or with interrupters closed

Position-lndicatlng Lamps (one red, one green) located inslde operator enclosure. Lamps are wired in series

-L4

”

-T

Includes one normally open and one normally closed contact suitable for use with remotely located indicating lamps or alarms

Duplex Receptacle with Ground-Fault Circult Interrupter and Convenlence-Light Lampholder with Switch located Inside operator enclosure

Elght Additional Nonadjustable Slngle-Pole Double-Throw Auxillary-Swltch Contacts in Operator which follow the Interrupters

Local-Remote Selector Switch. Prevents remote operation of operator when selector switch is placed in ”local”

I mode as, for example, during inspection

-V

-wl

-v

- I

S&C ELECTRIC COMPANY Chicago

S&C ELECTRIC CANADA LTD. Toronto

INSTRUCTION SHEET

Page 3 of

November

29, 1993

S&C Series 2000 Circuit-Switchers

Model

2020

Outdoor Transmission

and Side-Break Power-Operated

Disconnect, 69 kv through 138 kv

Pressure-relief device and low-gas-pressure indicator

Single-gap SF6 puffer-type interrupter

I support plate

Figure 1. Model 2020 Series 2000 Circuit-Switcher fated 138

kv.

INSTRUCTION

SHEET

Page

4 of 23

November

29, 1993

S&C

ELECTRIC

COMPANY

Chicago

S&C

ELECTRIC CANADA LTD. Toronto

BEFORE

STARTING INSTALLATION

Checking the Shipment

An S&C

catalog drawing will be found in a water- resistant envelope attached to the wirebound-wood

Study this drawing carefully and check the bill

of

at

hand.

The Model 2020 Series 2000 Circuit-Switcher shipment should include the following items,

as

shown

in

Figures

2

and

5:

1.

Three pole-units, each consisting of

an

insulating support column, support insulator, integral disconnect, and channel base-all factory-assembled and adjusted.

2. A

single cross base, enclosing the high-speed interphase power train which drives the interrupters.

3.

Three interrupters (directly attached

to

the

cross

base for shipping purposes).

4. The appropriate number of mounting pedestals, pedestal

A

single

is

used for Circuit-Switchers rated

69

(with 48-inch phase spacing); a set of

two

pedestals is used for Circuit-Switchers rated

69

kv (with

@-inch phase spacing),

115 kv,

and

138 kv.

5. A

Series 2000 Circuit-Switcher Operator.

6. A

low-speed interphase power train which drives the disconnect blades.

7. A

container of miscellaneous operating-mechanism components and hardware-all individually identified.

8. Any optional features specified, such

as

a grounding switch.

Gias-Pressure Indicator

Series

2000

Circuit-Switchers have sealed interrupters containing

gas

under pressure.

Loss

of gas pressure may result in improper interrupting action. Low gas pressure is signaled by a red target in the gas-pressure indicator

at

the terminal end of the interrupter.

DO NOT INTERMIX COMPONENTS FROM

Series

DIFFERENT INSTALCATIONS

2000

Circuit-Switchers are completely factory-assembled and thoroughly tested.

To

speed

Circuit-Switcher and its operator, it is imperative that components belonging

to a

specific Circuit-

Switcher installation

not be

intermixed with components belonging to

a

different installation.

For this reason, each Series 2000 Circuit-Switcher is serially numbered.

This

serial number appears on the individual pole-units, the cross base, the mounting pedestals, and the operator.

It is further important that components from different installations not be intermixed in that S&C

maintains an

historical record-by serial number- of every circuit-Switcher produced.

This

lists

information pertinent to each installation, such

as

application, date of shipment, and any service performed by S&C factory service specialists.

This

record is invaluable when questions arise relative

to

modifications or replacements.

Please complde and

m a i l

the Circuit-Switcher registration card

{enclosed in a vinyl envelope

located inside the operator) a m

the

Circuit-

Switcher has been installed. The information

requested on

this

card

vital to

ensure prompt notifkation i n

the

event fkld nwdifiatitms are needed.

S&C ELECTRIC

CANADA LTD.

COMPANY Chicago Page

Toronto

INSTRUCTION SHEET

5 of

23

November 29, 1993

SBC Series 2000 Circuit-Switchers

Model

2020

Outdoor Transmission

and Side-Break Power-Operated

Disconnect, 69 kv through

138

kv

INSTALLATION

Do

not remove the containers from the interrupters,

or the wirebound-wood

wrappers

from the insulating support columns, until the installation has been completed.

BOLTED

AND

PINNED CONNECTIONS

A

typical bolted connection for field assembly requires

a flat

washer under the cap screw and hex nuts are specified, it is essential that the threads of the associated cap screws be lubricated with

a

general-purpose grease, to facilitate tightening.

All

pins used in the field assembly should also be lubricated to facilitate insertion.

step 1

Cut the steel straps which bind the mounting pedestals and support arms to the cross base and the straps which bind the container of miscellaneous operating- mechanism components and hardware.

Also

remove the wood bracing between the pole-unit terminal pads.

See Figure

2. step

Install the mounting pedestals. See Figure

3.

Make certain that the grounding

pad

on each mounting pedestal is properly positioned for this particular installation.

Adjust the lower set

of

anchor-bolt nuts at each

The

upper set of anchor-bolt nuts should

be

only loosely attached

at

this time.

Pole-unit

Figure 2. Typical shipment of Model 2020 Series

2000

Circuit-Switcher. Operator is skid; see Figure 5.

INSTRUCTION

SHEET

Page 6 of 23

November

29, 1993

S&C ELECTRIC COMPANY

S&C ELECTRIC CANADA LTD.

Chicago

Toronto

1 INSTALLATION - Continued

step 3

Attach the support arms to the mounting pedestals as shown on the catalog drawing using W-11 X 1W hex-head galvanized steel cap screws and flat washers furnished. Torque the cap screws to 160 foot-pounds.

Also attach the covers to the tops of the mounting pedestals as shown on the catalog drawing using

W-13 X 2” hex-head galvanized steel cap screws, flat washers, and self-locking hex nuts furnished.A Securely tighten the cap screws.

step 4

Attach the lifting angles to the cross base using

M”-13 X 1%” hex-head galvanized steel cap screws furnished. See Figure 4. Securely tighten the cap screws.

Then attach four suitable lifting slings to the lifting angles. Unbolt the base from the shipping skids and lift the base-with interrupters attached-atop the support arm gussets,* as shown on the catalog drawing.

Avoid sudden starts and stops. Verify that the switchposition indicator on the base is visible on the desired side (this is also the side on which the operator door will open).

A Not applicable to 69.kv Circuit-Switchers with 48.inch phase spacing.

* On 69-kv Circuit-Switchers with 48-inch phase spacing, support arm gussets are not used; the cross base is attached atop the mounting pedestal using %“-11 X 2W hex-head gahranized steel cap screws, flat washers, and self-lockiug hex nuts.

Two nuts and two flat washers

Figure 3. Pedestal mounting detail.

Interrupter lifting bracket

Protective cover at le-unit mounting position. See Step

Interrupter shipping bracket and clamps

Figure 4. Hoisting the cross base.

1 Lifting angle A

‘3

S&C ELECTRIC COMPANY

Chicago

S&C ELECTRIC CANADA LTD.

Toronto

INSTRUCTION SHEET

7 l&504

Page.7 of 23

November 29, 1993

S&C Series 2000 Circuit-Switchers

Outdoor Transmission

Model 2020 - With Vertical Interrupters and Side-Break Power-Operated

Disconnect, 69 kv through 138 kv

1 INSTALLATION - Continued

Loose&

bolt

step 5

the cross base to the support arms* using the W’-13 X 2” hex-head galvanized steel cap screws, flat washers, and self-locking hex nuts furnished.

Then-using a level-verity that the cross base is horizontal, both lengthwise and side-to-side; adjust the lower set of anchor-bolt nuts at the pedestals to achieve this condition. If necessary, loosen the W-11 X 1W’ hex-head galvanized steel cap screws which attach the support arms to the mounting pedestals, reposition the support arms, and retighten the cap screws.

Securely

bolt

Step 6

the cross base to the support arms. Shims are furnished and should be installed as necessary between the cross base and the support arms, to compensate for any irregularities greater than ‘/s inch between the mating surfaces.

ste!p 7

Refer to the catalog drawing and attach the support brace to the support arms, using the spacers,

W”-13 X 2” hex-head galvanized steel cap screws, flat washers, and self-locking hex nuts furnished. Securely tighten the associated cap screws.

step 8

Check the lower set of anchor-bolt nuts at each mounting pedestal to verify that all nuts are in contact with the bottom of the pedestal. Hand-tighten these anchor-bolt nuts as necessary. Then securely tighten the upper set of anchor-bolt nuts at each mounting pedestal.

* On 69-kv Circuit-Switchers with 48.inch phase spacing, support arm gussets are not used; the cross base is attached atop the mounting pedestal using W-11 X 2%” hex-head gahranized steel cap screws, flat washers, and self-locking hex nuts.

Stored-energy housing

Figure 5. Raising operator upon base skid.

e-504

INSTRUCTION SHEET

Page 8 of 23

November 29, 1993

S&C ELECTRIC COMPANY

Chicago

S&C ELECTRIC CANADA LTD.

Tomnto

INSTALLATION - Continued

Step 9

Loosen the %“-13 X 1%” galvanized steel cap screws, flat washers, and nuts which are used to attach the bottom plates and lifting angles to the underside of

the

cross base. Remove the plates and place them and their hardware aside on a clean surface. Discard the lifting angles.

Also remove the ?&inch stainless-steel pm and cotter pin from the interphase drive lever enclosed in the cross base. See Figure 12. Retain these pins for re-use in

Step 21.

step 10

Wrap a lifting sling around the stored-energy housing of the operator, as shown in Figure 5 (left). Now carefully raise the operator to the upright position so that it rests on its base skid, as shown in Figure 5 (right).

Donot?-emDue

the lifling sling around the stored-energy housing, as the operator is top-heavy and must be adequately supported until it is attached to the Circuit-

Stitcher. Remove the skid and bracing which runs the length of the operator, stored-energy housing, and operator support tube. Also remove the protective cover atop the operator support tube, as well as

the

protective covers on the operator enclosure louvers.

step 11

Reposition the lifting sling around the front of the stored-energy housing and wrap another lifting sling around the back of the stored-energy housing, as shown in Figure 6. Make certain that the operator door faces the same way as the switch-position indicator on the cross base. Then carefully hoist the operator into place.

Be cart&l not to damage the uni-ball coupling on the operator connecting link during hoisting and attachment of the

operator. Attach the operator support tube mounting plate to the underside of the cross base using four Y/--13X 1%” hex-head galvanized steel cap screws, flat washers, and self-locking hex nuts. Tighten all four screws securely.

Holes for W--13X 1%” hex-head galvanized steel cap screws, flat washers, and self-locking nuts

Operator support tube

Uni-ball coupling

’ Operator support tube mounting plate

‘Stored-energy housing

Figure 8. Hoisting operator into position.

a S&c ELECTRIC COMPANY

Chicago

S&C ELECTRIC CANADA LTD.

Toronto

INSTRUCTION SHEET

7 161504

Pageg of 23

November 29, 1993

S&C Series 2000 Circuit-Switchers

Outdoor Transmission

INSTALLATION - Continued

step12

Attach the operator support angle to the appropriate mounting pedestal using two %“-I1 X 14” hex-head galvanized steel cap screws, four flat washers, and two self-locking hex nuts. Refer to the catalog drawing. Then attach the operator support plate to the angle on the side of the operator enclosure and to the operator support angle on the mounting pedestal using four

M”-13 X 1 w” hex-head galvanized steel cap screws, flat washers, and self-locking hex nuts furnished. Securely

tighten

the screws. See Figure 1. On Circuit-Switchers utilizing two or three mounting pedestals, insert the hole plugs furnished into all unused holes in the pedestals.

step13

Attach four suitable lifting slings to the channel base of the pole-unit that will be mounted at the center of the cross base-marked “Pole 2”-as shown in Figure 7.

(“Pole 2” is positioned

outboard

on the shipping skid

Model 2020 - With Vertical Interrupters and Side-Break Power-Operated

Disconnect, 69 kv through 138 kv for ease in handling.) Attach an additional sling around the support insulator as shown in Figure 7; this sling is required to maintain stability during lifting.

Make cert&n that the rigging does not stress the disconnect. Unbolt the base from the skid. Raise the pole-unit a few feet, then remove the two W-13 X 1%” hex-head galvanized steel cap screws, flat washers, and hex nuts which attach the shipping bracket to the bottom of the pole-unit channel base. Discard the shipping bracket and associated hardware.

Remove the %-inch silicon-bronze pm and cotter pin from the insulated operating rod. Retain these pins for re-use in Step 18(f).

Remove the protective cover on the cross base at the pole-unit mounting position. See Figure 4. Now continue to raise the pole-unit to its mounting position at the center of the cross base, as shown on the catalog drawing. Carefully guide the pole-unit to avoid damag-

Shipping bracket for insulated

Figure 7. Hoisting the pole-unit.

.’

l&504 INSTRUCTION SHEET

Page IQ of 23

November 29, 1993

S&C ELECTRIC COMPANY

Chicago

S&C ELECTRIC CANADA LTD.

Toronto

INSTALLATION

- ing the insulated operating rod.

Do not attempt to

lifi

the

pole-unit by the disconnect.

Attach the pole-unit channel base to the cross base, using

%"-13

X 13h" hex-head galvanized steel cap screws, flat washers, and self-locking hex nuts furnished. Next, attach the pole-unit channel base to

%"-13

1

%" hex-head galvanized steel cap screws,

flat

washers, and self-locking hex nuts furnished. Securely tighten all these cap screws.

Step

Repeat Step 13 for the two outboard pole-units- marked "Pole

1"

and "Pole

3."

Step

For 69-kv Circuit-Switchers with 48-inch phase spacing:

Relevel the support brace to the same

as

the cross base. If necessary, loosen the cap screws used to attach the

outboard

pole-unit channel bases tighten the cap screws.

Step

Attach

a

lifting sling to the lifting bracket on one of the interrupters. See Figure

4.

clamps and associated %-inch galvanized steel hardware which fasten the interrupter shipping bracket to the cross base. Then carefully

lift

the interrupter somewhat higher than the top of the transition box

of

its associated insulating support column.

Now

remove the four

%"-13

stainless-steel hex nuts and

Belleville washers used to attach the interrupter shipping bracket to the threaded studs on the interrupter. Discard the shipping bracket but retain

in

Step 18(e).

Step

for attachment to insulating support column

as

follows:

(a)

Remove and discard the two

#10-32

screws which connect the operating-rod holding bracket (marked with

a

black/yellow striped label) for shipment. See

Figure

8

(left). Note: The operating rod is under pressure; when the

two

screws are removed, the holding bracket may move about % inch.

(b) Pull the holding bracket to move the operating rod to its fully open position.

See

Figure 8 (rght).

( c )

Remove the connecting pin used to attach the holding bracket to the coupling. Retain the connecting pin for re-use in Step 18(g), but discard the holding bracket.

Operating-rod holding bracket

striped label)

Operating rod in shipping position

Figure 8.

Preparing interrupter lor attachment to Insulating support column.

Operating rod in fully open position

S&C ELECTRIC COMPANY Chicago

S&C ELECTRIC CANADA LTD. Toronto

INSTRUCTION SHEET

7 1 &504

Page

11 01 23

November

29,

1993

S&C Series 2000 Circuit-Switchers

Outdoor Transmission

Model 2020 - With Vertical Interrupters and Side-Break Power-Operated

Disconnect, 69 kv through 138 kv

INSTALLATION - Continued

,W-13 stainless-steel studs, Beiieviiie washers, and stainless- / . hI’ [email protected] hex nuts , i*

‘rl

Shipping cover A

Transition box

Access cover

(removed)

I’ i

Figure 9. Attaching interrupter to insulating support column.

Step18

Attach the interrupter to its insulating support column as follows. See Figure 9.

(a) Remove and discard the shipping cover atop the transition box.

(b) Thoroughly wire-brush the top of the transition box and the mating surface on the interrupter, and immediately apply a liberal coating of [email protected]

A (available from Burndy Corporation) or other suitable aluminum connector compound to the brushed surfaces.

5/16”-18

X %” hex-head stainlesssteel cap screws used to attach the access cover to the side of the transition box. Remove the cover and place it and the hardware on a clean surface.

Also remove the cloth bag containing hardware which will be used for connecting the interrupter coupling to the operating rod link in Step 18(g).

(d)Mah ce.rt&n that t2&

positioning mark on the bottom of

the

interrupter is aligmed with the positioning mark an the top of th& transition box.

Then carefully lower the interrupter on top of the transition box. Note that one of the W-13 stainlesssteel studs on the interrupter is longer than the other three, to aid in assembly.

(e) Reattach a %-inch Belleville washer and a %“--13 stainless-steel hex nut, as retained from Step 16, to each of the four studs. Tighten each nut securely.

(f) Attach the insulated operating rod end links to the interphase drive linkage lever in the cross base, using the %-inch silicon-bronze pin and cotter pm retained from Step 13. See Figure 10. The insulated operating rod may be moved up or down, as required, to make the connection.

(g) Insert the connecting pin retained from Step 17(c) into the coupling and operating rod link. See

Figure 11.

It will be necessary to loosen the

5/,,5”-18 X 2’/O” hex-head stainless-steel screw indicated in Figure 11 and withdraw it app?-oximately

‘/s

inch, so that the UmneCting pin can be inserted. Do not remmx the screw at this time.

(h)Insert the pin retaining clip as indicated in

Figure 11.

Make sure that the

clip is positioned US

Shown.

(i) Now remove and discard the

5/16”-i8 X 2%”

hexhead stainless-steel screw, stop bracket (marked with a black/yellow striped label), and spacer

(marked with a black/yellow striped label)

ihS-

trated in Figure 11.

l&504 INSTRUCTION SHEET

Page 12 of 23

November 29, 7993

S&C ELECTRIC COMPANY

Chicago

S&C ELECTRIC CANADA LTD.

Toronto

INSTALLATION - Continued

step 19

Remove the interrupter lifting bracket and associated

M-inch stainless-steel hardware from atop the interrupter. Discard the lifting bracket but retain the hardware. Thoroughly wire-brush the indicator end casting where the upper terminal pad is to be attached, as well as the mating surface on the upper terminal pad, and immediately apply a liberal coating of

Penetrox A or other suitable aluminum connector compound to the brushed surfaces. Then attach the upper terminal pad using three %“-13 X 1%” hex-head stainless-steel cap screws and Belleville washers.

step 20

Repeat Steps 16 through 19 for the other two interrupters.

step 21

Attach the uni-ball coupling on the operator connecting link to the interphase drive lever in the cross base, using the %-inch stainless-steel pin and cotter pin retained from Step 9. See Figure 12. An adjustable locking rod

(marked with a black/yellow striped label) is furnished, factory-connected to the interphase drive lever; turn the associated %“-20 locknuts as required to raise or lower the interphase drive lever and thus facilitate insertion of the stainless-steel pin.

step 22

Remove the lower 5/4”--20 locknut which retains the adjustable locking rod. Then remove and discard the adjustable locking rod and locknuts.

Step 23

Open the disconnect blade on each pole-unit. With the disconnect-blade corona-ball contact clear of its jawcontact fingers as indicated in Figure 13 (top), check that the blade centerline has not shifted up or down by more than % inch-as measured to the centerline of the jaw contact. See Figure 13 (bottom). If any blade centerline has shifted by more than l/4 inch, loosen the leveling-screw locknuts located under the associated jaw-contact support insulator. See Figure 14. Adjust the locknuts as necessary to shift the jaw-contact centerline to correspond to that of the blade centerline, f’/4 inch. Then tighten the locknuts.

Connecting pin

Spacer (marked with a black/yellow striped label)

Figure.10. Attaching insulated operating rod to interphase drive.

stainless-steel screw

Pin retaining

I clip

Operiting rod link

(ma’rked with a black/yellow striped label)

Figure 11. Connecting interrrupter to operating rod link.

m S&C ELECTRIC COMPANY

Chicago rm S&C ELECTRIC CANADA LTD.

Toronto

INSTRUCTION SHEET

7 161504

Page 13 of 23

November 29. 1993

S&C Series

2000 Circuit-Switchers

Model

2020

Outdoor Transmission

and Side-Break Power-Operated

Disconnect,

69 kv through 138 kv

INSTALLATION

- using

a

%-inch stainless-steel pin and cotter furnished. See Figure 16. pin

step

Close the disconnect blade on each pole-unit. The

disconnect-blade corona-ball contact must be centered on its

***jawcontact* fingers *and the blade must***

touch its

stop

indicated i n

FXgure 15 (top].

Connect the pole-unit insulating support column drive lever using

a

%-inch stainless-steel pin, two galvanized steel spacers, and

two

stainless-steel

“X”

washers furnished. to the two outboard pole-unit insulating support column drive levers. be connected to an outboard pole-unit insulating support column drive lever, loosen the appropriate locknut at the adjustable coupling and rotate the affected interphase pipe section

so

that the can be made; then tighten the locknut. See Figure

16. Step

Attach the ‘%”-shaped clevis at the lower end of the vertical-operating-pipe assembly to the take-off shaft on the rear

of

the operator, using a %-inch stainless- steel pin and stainless-steel

“X”

washer furnished. See

Figure 16 (inset). Then attach the straight clevis at the upper end of the vertical-operating-pipe assembly

cross

base, using a %-inch stainless-steel pin and cotter pin furnished. See Figure 16. If necessary, loosen the locknuts

at

the top and pipe and rotate the pipe

so

that the connection can be made; then tighten the locknuts.

Step

Attach the clevis end the longer

of

the interphase drive link to

of

the bell-crank

arms

on the cross base,

Step

Check

for

proper blade closure

at

the

center

pole-unit- marked “Pole

2.“

With

a

pull-out force of approximately

15

(top), blade deflection should be no more than W inch.

(marked with a black/yellow striped label) Interphase drive lever

Adjustable locking rod

Uni-ball coupllng

%“

stainless-steel pin and coner pin

%““20

locknut

Operator connecting link

7 1

INSTRUCTION SHEET

Page

14 of 23

November

29,

7993

S&C

ELECTRIC COMPANY Chicago

S&C ELECTRIC CANADA LTD. Toronto

INSTALLATION

- of the vertical operating pipe and rotate the pipe

counterclockwise

(as

blade travel; then tighten the locknuts. See Figure

16

(inset).

Step 28

Check

for

proper blade closure

at

the

two

outboard

pole-units-marked "Pole 1" and "Pole

3."

With

a

pull- out force of approximately

pounds applied at the position indicated

in

Figure

15

(top), blade deflection should be no more than

% inch.

If

necessary, loosen the four

%"-13

1%"

screws which attach the blade clamp to the transition box and rotate the blade

mnterclockwise (as

- the cap scre;Y's. See Figure

17. I

step 29

Use the manual charging handle furnished with the operator

to

check functioning

of

the low-speed power train,

as

follows. Refer

to

Rgure

19.

(a) Open the access shutter and place the manual

(b) Rotate the shaft,

clockwise

only,

until

a firm

resistance

is

felt. At this point, the should be open approximately

90

degrees.

If

the

open

this extent, operating pipe and rotate the pipe

clockwise (as

tlghten the locknuts.

( c )

Remove the manual charging handle from the manual charging shaft.

Disconnect-blade corona-ball contact

Jaw-contact

I ,

c of disconnect blade assembly

Figure

13.

Checking alignment of disconnect blade and jaw contact.

S&C ELECTRIC COMPANY Chicago

S&C ELECTRIC

CANADA LTD. Toronto

INSTRUCTION SHEET

Page 15 of 23

November

29,1993

S&C Series 2000 Circuit-Switchers

Outdoor Transmission

Model 2020 - With Vertical Interrupters and Side-Break Power-Operated

Disconnect, 69 kv through 138 kv

INSTALLATION - Continued

step 30

Attach the high-voltage conductors to their respective

Circuit-Switcher terminal pads using flexibleconductor connections. Observe the terminal-pad loading limits specified on the catalog drawing.

Conductors must be de-energized and grounded in accordance with standard system operating practice.

Use the following procedure for attachment:

(a) Thoroughly wire-brush the current-transfer surfaces of each connector and immediately apply a liberal coating of Penetrox A or other suitable aluminum connector compound to the brushed surfaces.

(b) Wire-brush each Circuit-Switcher terminal pad and apply a coating of Penetrox A. Then bolt the connectors to the terminal pads.

Step 31

Remove the container from each interrupter as follows:

(a) Remove and discard the ?~‘a”---16 zinc-plated serrated hex nuts which run the length of the container.

) Remove and discard the two %“-16 X 1” and two

%“-16 X %” zinc-plated hex-head cap screws and flat washers which attach the two container-halves to the

coupling end casting

of the interrupter.

) Remove and discard the two %“-16 X 1” and one

%“-16 X %” zinc-plated hex-head cap screws and flat washers which attach one of the containerhalves to the

indicator end casting

of the interrupter. Don’t remove the remaining 3/e”-16 X 7/s” cap screw-it’s needed to temporarily retain the other container-half.

(d) Pry the container-halves apart with a screwdriver.

One of the container-halves can now be removed and discarded-slotted holes are provided so that a rope or lifting sling can be attached and the container more conveniently lowered to the ground.

(e) Now remove and discard the remaining

3/e”-16 X ?‘a” hex-head cap screw and flat washer which attach the other container-half. Then discard this container-half.

(f) Finally, remove and discard the foam-core inner liner wrapped around the interrupter.

74 6.504 INSTRUCTION SHEET

Page 16 of 23

November 29,1993

Step 32

Remove and discard the wirebound-wood wrapper from each insulating support column.

step 33

Perform the following set-up procedure on the operator.

See Figure 18.

(a) To avoid accidentally energizing the operator after the external connections have been completed, open the control-source disconnect switch.

Loosen the clamps on the inside of the side access door, open the side access door, and remove the blocking from the motor contactors.

Mark the conduit-entrance location for the controlcircuit wiring on the conduit-entrance plate in the bottom of the operator enclosure. Then remove the plate and cut out the necessary opening. Apply the sealing compound furnished, replace the plate, and make up the entrance fittings. Verify that the entrance fittings are properly sealed to prevent water ingress.

(d) Connect the external control-circuit wiring (including the space-heater source leads) to the terminal blocks at the bottom of the enclosure, in accordance with the wiring diagram furnished. Observe correct polarity on dc-control-voltage models. 7bip-circuit

conductors and motor-and-closing

circuit

wnductars must be adequately sized

indicated

for

on the wiring diagram.

the ampacities

support insulator 6’:’

Figure 14. Adjusting leveling-screw locknuts.

S&C ELECTRIC COMPANY

Chicago

S&C ELECTRIC CANADA LTD.

Toronto

INSTALLATION

Unauthorized changes should not be made in the wiring

of

the operator. Should

a

control-circuit revision appear desirable, it should be made only on the authority

of a

revised wiring diagram which has been approved by both the user and S&C

Electric Company.

Do

not apply control time!

at

this

Blade stop

Disconnect-blade

JawJcontact fingers t

40-pound Maximum pull-out force

\ allowable deflection: 'h inch

See

Steps 27 and 28

Top View

of disconnect blade and jaw-contact assembly

step

34

Check the

following

. . . failure to do

so

can result in damage to the Circuit-Switcher when operated!

each

transition

box:

The operating-rod holding bracket, stop bracket, and spacer have been removed from the interrupter (see Figures 8 and

ll),

and

The interrupter coupling has been connected to its insulated operating rod link (see Fig- ure

11).

(b)

In

the

m s

base:

Each insulated operating rod has been connected to the interphase drive (see Fig- ure lo),

The interphase drive lever has been connected to the operator uni-ball coupling (see Rgure

12),

and

The adjustable locking rod attached to the interphase drive lever has been removed (see

Figure

12).

ouler

pinned

tun" and all bolted

con128ctio12s

have been securely tightened.

(d)At

the

operator:

Blocking has been removed from the motor contactors, and

Correct polarity has been observed on dc- control-voltage models.

Side View

Figure 15. Checking engagement of disconnect-blade corona-ball contact in jaw-contact fingers.

7 1

M w

Page 17 of

November 29, 1993

S&C ELECTRIC COMPANY Chicago

S&C ELECTRIC CANADA LTD. Toronto

S&C Series 2000 Circuit-Switchers

Outdoor Transmission

Model 2020 - With Vertical Interrupters and Side-Break Power-Operated

Disconnect, 69 kv through 138 kv

INSTALLATION - Continued

Step 35

Replace the access cover on the side of each transition box and securely tighten the associated %“-18 X %” hex-head stainless-steel cap screws.

Step 36

Replace the bottom plates to the underside of the cross base and securely tighten the associated M”-13 X 1%” galvanized steel cap screws, flat washers, and nuts.

Step 37

Insert the motor-and-closing circuit fuseholder. Then close the control-source disconnect switch.

Locknut

70” stainlesssteel pin and “x” washer

Take-off shaft l/a” stainless-steel pin, galvanized steel spacers, and stainless-steel

“X” washers

5/8” stainless-steel pin

- Vertical-

Locknut l/2” stainless-steel drive lever

_ .

Figure 18. Connecting interphase pipe assembly and vertical-operating-pipe assembly. Attachment of interpnase drive link to interphase pipe assembly is different on Circuit-Switchers rated 89 kv (with 48-inch phase spacing); refer to the catalog drawing.

1 &SW INSTRUCTION SHEET

Page 18 of 23

November 29, 1993

. S&C ELECTRIC COMPANY

Chicago

S&C ELECTRIC CANADA LTD.

Toronto

INSTALLATION

Step 38

Press the “CL0SE”A pushbutton. The motor-driven cam

in

the stored-energy mechanism will immediately

start

retracting. Simultaneously, the take-off shaft

at

the

rear

of the operator w turn to pipe assembly, closing the disconnect. When the disconnect has completely closed, the closing latch will release, discharging the closing spring. This action closes the interrupters. The switch-position indicator on the cross base w move to the “CLOSED” position.

Further, if the position-indicating lamp option has been specified, the red lamp w light.

Step

39

When the Circuit-Switcher is ready to be placed in service, the motor-and-closing circuit fuses can-at the user’s option-be replaced with the slugs furnished.

This

practice is recommended for increased reliability because low-voltage fuses can be damaged by the repeated inrush current experienced during normal

Circuit-Switcher opening and closing operations and can thus sneak out, leaving the Circuit-Switcher inoperable.

Bejiie replacing these fuses

slugs, make certain that the control-source battery

adequately protected to prevent discharge, using

fuses

or circuit breakers located at the battery bus.

step 40

Please complete and mail

the

Circuit-Switcher regis- tration card!

The information requested on this card is vital to ensure prompt notification in the event field modifications are needed.

A ’hip and close pushbuttons are not included on operators specified with Catalog Number

Suffix

‘J.” In such instances, momentarily jumper terminals 1 and 3 to close the Circuit-Switcher.

Blade clamp

at outboard pole-unit

to attain

lOPERATlON

Electrical Operation

Refer to Figure 18.

To open the Circuit-Switcher,

press the “ T R I P pushbutton.* The opening latch in the stored-energy mechanism will release, discharging the opening spring. and closing pistons in the mechanism downward,

as

denoted by movement of the indicator to the “DIS-

CHARGED” window. The switch-position indicator on

if the position-indicating lamp option

“-M”)

w light.

‘The motor-driven cam in the stored-energy mechanism will immediately

start

rising, thereby charging both the opening and closing springs; when the opening spring latches, the indicator w again be visible

at

the

“CHARGED” window. Simultaneously, the take-off shaft

n i p and close pushbuttons on operators specified with Catalog Number Suffm ‘-J.” Refer to the ‘Manual Operation” section.

S&C ELECTRIC COMPANY Chicago

S&C ELECTRIC CANADA LTD. Toronto

INSTRUCTION SHEET

1&5O4

Page 19 of

November

29,1993

S&C Series 2000 Circuit-Switchers

Outdoor Transmission

Model 2020 - With Vertical Interrupters and Side-Break Power-Operated

Disconnect, 69 kv through 138 kv

OPERATION - Continued

Eight nonadjustable single-pole doublethrow auxiliary-switch contacts

(not visible in photo) which follow the interrupters

Key interlock

(Catalog Number Suffix “-Ll”)

Side access door for user’s external connections

(to terminal blocks at bottom of enclosure)

Instruction indicating lamps

Duplex receptacle with ground-fault circuit interrupter and conveniencelight lampholder with switch

Non-reset electric fuses

Access shutter handle

operator when coupled, operator only when decoupled

Figure 18. Interior of operator.

Space-heater fuses

716-504

Page 20 of 23

November 29, 1993

INSTRUCTION SHEET

Motor-andclosing circuit fuseholder

Control-source disconnect switch

S&C ELECTRIC COMPANY

Chicago s&C ELECTRIC CANADA LTD.

Toronto

OPERATION - Continued at the rear of the operator housing will turn to drive the interphase pipe assembly, opening the disconnect.

To

close the

Circuit-Switcher, press the “CLOSE” pushbutton.* The motor-driven cam in the storedenergy mechanism will immediately start retracting.

Simultaneously, the take-off shaft at the rear of the operator housing will turn to drive the interphase pipe assembly, closing the disconnect. When the disconnect has completely closed, the closing latch will release, discharging the closing spring. This action closes the interrupters. The switch-position indicator on the cross base will move to the “CLOSED” position. Further, if the position-indicating lamp option has been specified, the red lamp will light.

The Circuit-Switcher may also be electrically operated via remotely located control switches. No instruc-

* Trip and close pushbuttons are not included on operators specified with Catalog Number Suffix “-J.” Refer to the “Manual Operation” section.

Coupled

Vertlcal-operatlng-

4H pipe assembly

(In open pmtion)

Decoupling handle

Figure 19. Using manual charging handle to recharge opening and closing springs, and open disconnect.

w S&C ELECTRIC COMPANY

Chicago

S&C ELECTRIC CANADA LTD.

Toronto

Decoupled

Figure 20. Decoupling the disconnect-blade power train.

INSTRUCTION SHEET

e-504

Page 21 of 23

November 29, 7993

SBC Series 2000 Circuit-Switchers

Model

2020

Outdoor Transmission

and Side-Break Power-Operated

Disconnect, 69 kv through 138 kv

- tions are included for such operation because control schemesvarywith different installations. With any given installation, however, it may be possible and desirable to effect such operation.

Manual Operation

Refer to Figure 18.

To open

ULe

Circuit-Switcher,

lever counterclockwise. The opening latch in the stored- energy mechanism will release, discharging the opening spring. This action trips the interrupters and forces the opening and closing pistons in the mechanism downward,

as

denoted by movement of the indicator to the “DISCHARGED” window. The switch-position indicator on the cross base will move to the “OPEN” position. Further,

if

the position-indicating lamp option has been specified-and operator control voltage is available-the green lamp w light.

The motor-driven cam in the stored-energy mechanism w immediately start rising-if operator control voltage is available-thereby charging both the opening and closing springs; when the opening spring latches, the indicator will again be visible at the “CHARGED“ window. Simultaneously, the take-off shaft at the rear

of

the operator pipe assembly, opening the disconnect.

If

operator control driven cam in the stored-energy mechanism will charge the opening and closing springs-and the take-off shaft will turn to pipe assembly, opening the disconnect-when control voltage returns.

If

desired, the opening and closing springs can be charged and the disconnect opened after the interrupters have been tripped, using the manual charging handle furnished. Refer to Figure 19. Use the following procedure:

(a) Open the access shutter and place the manual charging handle on the manual operating shaft.

clockwisemly,

until the disconnect opens fully and the mechanism reaches its open stop.

Manual closing of the Circuit-Switcher cannot be performed.

Decoupling

The disconnect-blade power train may be decoupled in the open position, permitting the interrupters to be tripped and closed for inspection purposes.

To

decouple,

open the Circuit-Switcher electrically

or

manually. Then disengage the decoupling handle on the rear of the operator by pivoting it outward. See

Figure 20 (bottom). The disconnect-blade power train

ern5O4

Page 22 of 23

November 29, 1993

S&C ELECTRIC COMPANY Chicago

S&C ELECTRIC CANADA LTD. Toronto

1 OPERATION - Continued may now be padlocked open. In addition, the interrupters may now be closed and re-tripped as desired, either electrically or manually.

To rtwmplq

open the Circuit-Switcher electrically or manually. Then engage the decoupling handle on the rear of the operator by pivoting it inward. See Figure 20

(top). The disconnect-blade power train may now be padlocked coupled.

Adjusting Auxiliary-Switch Contacts

Two individually adjustable auxiliary-switch contacts are furnished in the operator. These contacts follow the position of the disconnect-blade power train and operator when the power train is coupled, and the position of the operator when the power train is decoupled.

Each auxiliary-switch contact is operated by a camactuated roller. A contact is closed if its roller is disengaged from a cam and, conversely, a contact is open if its roller is engaged by a cam. The cams are individually adjustable in 4.5-degree increments.

Adjustment of the cams is accomplished as follows:

(a) Push the cam toward its adjacent spring until the cam is separated from the teeth of the inner gear.

See Figure 2 1.

(b) Rotate the cam to advance or retard engagement with its roller.

making

sure that the teeth are in mesh with the inner gear.

Cam

Figure 21. Adjustment of cams on auxluary swucn.

S&C ELECTRIC CANADA LTD.

Toronto

INSTRUCTION SHEET

e-504