RFI Attachment 2 - Four Position Sectionalizing Loadbreak Switches.pdf

Eaton's Cooper Power™ series four-position sectionalizing loadbreak switch is designed for use in transformer (mineral) oil, Envirotemp™ FR™ fluid, or an approved equivalent fluid-filled pad-mounted transformers or distribution switchgear.

The switches meet the full requirements of the latest revision of both IEEE® and IEC standards.

Sectionalizing switches can be used on single- and three-phase grounded wye or delta systems. They are used in underground residential applications with loop feed, and in three-phase commercial industrial installations where the ability to use an alternative source of power is necessary. They can also be used to switch on and off a primary cable tap on a transformer.

The under-oil switch can be installed near the transformer core/coil assembly, thus minimizing cable capacitance. With cable capacitance minimized and all three phases switched simultaneously, the like li hood of ferroresonance is greatly reduced. All switches are hotstick operable and available in several different blade configurations (Refer to Table 4).

Eaton’s Cooper Power series sectionalizing switches rotate 360˚ in either direction for alternate source selection. An externally installed limiting plate prevents ro ta tion to positions other than the one desired. A spring-loaded activating mechanism ensures quick loadbreak action and positive contact engagement through all positions.

The Make-Before-Break (MBB) switches provide uninterrupted power during switching.

Four-position sectionalizing loadbreak switches

General

OEM Equipment Catalog Data

CA800005EN

Effective March 2025 Supersedes 800-64 June 2015

COOPER POWER

SERIES

Make-before-break features

• Improves system reliability by eliminating momentary interruptions during switching operations typically associated with Break-Before-Make (BBM) sectionalizing switches

• Replaces 2 or 3 two position loadbreak switches depending on application (choose V-blade or T-blade type)

• Simplifies operational procedures

• Make-Before-Break design is only available for V- and T-blade switch types

Attributes

• Available for both 12 kA and 16 kA applications

• Ratings from 200 A to 630 A and from 15 kV to 38 kV

• Tested in mineral oil and Envirotemp™ FR3™ fluid

• All electrical switching tests performed at third-party certified test laboratories

• 5000 mechanical operations (meets IEC class M2 switch)

• All silver plated copper current path

• Similar “footprint” as previous 10 kA switches

(See Tables 3 and 4)

• The Ring-Mount System option offers easy and fast installation

• Special vertical mounted switches available for cover mounted applications

Production tests Tests are conducted in accordance with Eaton requirements:

• Physical Inspection

• Mechanical operations

• Operating torque

• Contact pressure

• Switch contact resistance

Installation The switch is either horizontally or vertically mounted, depending on the application and the selected switch type. The vertically mounted switch is typically used in transformers/switchgear installed below grade, where the switch would be mounted in the cover of that particular equipment. All exposed parts of the vertically mounted switch are made from stainless steel or other non-corrosive materials. Both types of switches, including the mechanism, must be completely immersed under the insulating fluid.

ote: N For all mounting systems, refer to Service Information MN800002EN Sectionalizing Switch Installation Instructions for more detailed installation instructions.

Catalog Data CA800005EN Effective March 2025

Four-position sectionalizing loadbreak switches www.eaton.com/cooperpowerseries

Figure 2. Make-Before-Break switch features and description (see Table 5 for application details)

Figure 1. Switch features and description

Arc Suppressor Paddle The arc suppressor paddle forces insulating fluid across the contacts to assist in stretching and extinguishing the arc during switching.

Arc Barrier

Silver Plated Copper Contacts

SILVER PLATED COPPER BLADE

(MBB T-blade SHOWN) The MBB blade eliminates the momentary interruption during switching associated with connection type load-breaking switches. The MBB option also eliminates the need for multiple “on/off” switches required to avoid momentary switching interruptions.

SILVER PLATED COPPER BLADE

The moving blades are available in four different configurations or switch types; Straight, Selector, V-blade or T-blade. In addition the V-blade and the T-blade have a Make-Before-Break (MBB) option.

ARC BARRIER

Prevents stretched arcs from jumping across phases or phase-to-ground (earth) during switching.

(One barrier removed for illustrative purposes)

LIMIT PLATE

The limit plate can be used to assure only one operation is performed each time the switch is operated.

HANDLE

All horizontally mounted switches are furnished with cast brass handles.

Vertically mounted switches are typically used in transformers or switchgear mounted below grade and the switches are therefore furnished with brass handles and non-corrosive external parts.

ARC SUPPRESSOR

PADDLE

SWITCH MECHANISM

A spring-loaded activating mechanism ensures quick loadbreak action and positive contact engagement through all positions.

SILVER PLATED COPPER CONTACTS

Provides a low resistance connection with the moving blades.

MOUNTING PLATE (RING-MOUNT SHOWN)

The Ring-Mount System provides a fast and easy installation without additional bolts and welded couplings.

FIBERGLASS SHAFT

A fiberglass wound shaft with a solid pultruded core provides a high strength non-twisting connection between blades and the switch mechanism.

Catalog Data CA800005EN Effective March 2025

Electrical ratings

Table 1. Ratings and characteristics per IEEE Std C37.71™-2001 standard

Units

12.5 kA rated switches to IEEE Std C37.71™ - 2001 standard

Rated Voltage Maximum rating phase-to-phase Maximum rating phase-to-ground kV kV

15.5

27.8 17.2

21.9

Power Frequency Hz 60 60 60

Current rating (Continuous) A 630 300 200

Loadbreak Capability @ 0.75 Power Factor First peak min/ Time-to-peak max.

A kV µs

7.6

Magnetizing A 22 10.5 7

Cable Charging A 10 25 40

Fault Withstand Current (Momentary) 10 cycle symmetric rms 10 cycle asymmetric rms 10 cycle peak kA kA kA

12.5 18.6 32.6

12.5 18.6 32.5

12.5 18.6 32.5

Fault Withstand (Short-time) 1s rms 2s rms kA kA

12.5 12.5

12.5 12.5

12.5 12.5

Fault Close and Latch 10 cycle symmetric rms 10 cycle asymmetric rms 10 cycle peak kA kA kA

12.5 18.6 32.5

12.5 18.6 32.5

12.5 18.6 32.5

Impulse Withstand Voltage (1.2/50 µs) To ground and between phases Across open contacts kV kV

Power Frequency (1 minute) To ground and between phases Across open contacts kV kV

DC Withstand (15 minutes) To ground and between phases Across open contacts kV kV

Corona (Extinction) kV 26 26 26

Temperature Maximum at 630 A °C 75 75 75

Temp. Rise Above Ambient Air at 630 A (Max.) °K 35 35 35

Mechanical Life (Minimum Operations) 5,000 5,000 5,000

Table 2. Ratings and characteristics per

IEC 60265-1 – 1998

Units

16 kA rated switches to

IEC 60265-1 - 1998

Switch Rating kV 15 24 36

Rating voltage Maximum rating phase-to-phase Maximum rating phase-to-earth kV kV

15.5

24.9 14.4

21.9

Power Frequency Hz 50/60 50/60 50/60

No-Load Transformer Breaking Current A 6.3 4 2

Current Rating (Continuous) A 630 400 200

Mainly Active Load Breaking Current First peak min.

Time-to-peak max.

A kV µs

25.7

65.1

Closed Loop Breaking Current A 630 400 200

Line Charging Current A 1 1.5 2

Cable Charging Current A 10 17 25

Earth Fault Switching Current A 1 10 8

Cable and Line Charging Under Earth Fault A 17.5 17 26

Short-time Withstand Current 1s rms 2s rms 3s rms kA kA kA

Short-circuit Making Current 12 cycle symmetric rms (min.)

12 cycle asymmetric rms (min.)

12 cycle max. peak (min.)

kA kA kA

24.8 41.6

24.8 41.6

24.8 41.6

Impulse Withstand Voltage (1.2/50 µs) To earth and between phases Across open contacts (isolating distance) kV kV

Power Frequency (1 Minute) To earth and between phases Across open contacts (isolating distance) kV kV

Corona (Extinction) kV 26 26 26

Temperature Maximum at 630 A °C 90 90 90

Temp. Rise Above Ambient Air at 630 A (Max.) °K 50 50 50

Mechanical Life (Minimum Operations) 5,000 5,000 5,000

Catalog Data CA800005EN Effective March 2025

Figure 3. Line illustration with dimensions of sectionalizing switch with “Ring-Mount System”

Notes:

1. Dimensions given in Figure 3 and Table 3 are for reference only.

2. Handle can be used on 14 gauge .075 inch (1.9 mm) to .25 inch (6.4 mm) thick frontplate. 14 gauge shown.

3. Optional padlock handle is available. (See Table 6, Figure 6.)

(69.85 mm) 2.75”

ALL LINE

CONNECTIONS

(10.00 mm)

0.39” HOLE

(137.16 mm) 5.400”

8.32” (211.4 mm)

8.35” (212.0 mm)

4.38” (111.15 mm)

TANK WALL

5.153” (130.89 mm)

TYP

SEE NOTE 3

ARC

BARRIER

LOCKING NUT

FURNISHED WITH SWITCH

A

D

E

BC

.891” (22.63 mm)

F

NO OUTER (LARGE) RING

FOR SINGLE-PHASE SWITCH

Dimensional information

Table 3. Dimensional information for Figures 3 and 4 (inches/mm)

No. of decks/ phases kV ratings and blade type

A

B C

D E F

Horizontal mount

Vertical mount

Horizontal mount

Vertical mount

Horizontal mount

Vertical mount

Horizontal mount

Vertical mount

1 All 8.05" 204 mm

13.3" 338 mm – – 7.16"

182 mm 12.4" 315 mm

0.75" 19 mm

6.00" 152 mm

8.46" 215 mm

13.7" 348 mm

2 All 12.1" 307 mm

17.4" 442 mm

4.09" 104 – 7.16"

182 mm 12.4" 315 mm

0.75" 19 mm

6.00" 152 mm

12.5" 318 mm

17.7" 450 mm

12 kA T-Blade 12 & 16 kA Selector, Straight, & V-Blade

16.2" 411 mm

21.5" 546 mm

4.09" 104 mm

4.09" 104 mm

7.16" 182 mm

12.4" 315 mm

0.75" 19 mm

6.00" 152 mm

16.5" 419 mm

21.7" 551 mm

3 16 kA T-Blade Only

16.7" 424 mm – 4.09"

104 mm 4.09" 104 mm

7.56" 192 mm – 0.75"

19 mm – 16.9" 429 mm –

Catalog Data CA800005EN Effective March 2025

Figure 5. Hole and weld pin placement (Ring-Mount system)

* Exterior mounting surface must be flat within .010" (0.25 mm) over entire area.

** Interior mounting surface must be clear of obstructions.

Figure 4. Line illustration with dimensions of sectionalizing switch with vertical “Ring-Mount” (side view only, refer to Figure 3 for front view)

Notes: 1. Dimensions given in Figure 4 and Table 3 are for reference only.

2. Handle can be used on 14 gauge .075 inch (1.9 mm) to .25 inch (6.4 mm) thick frontplate. 14 gauge shown.

3. Optional padlock handle is available. (See Table 6, Figure 6.)

F

SEE NOTES 3+3

LOCKING NUT

FURNISHED WITH SWITCH

TANK WALL

C B

A

D

E .891”

(22.63 mm)

X = 36 Y = 0

ON EXTERIOR WALL:

Ø .312" DIAMETER X 625" LONG

(8 mm) (16 mm)

(4) WELD PINS

EXTERIOR MOUNTING SURFACE MUST BE

FLAT WITHIN .010 OVER ENTIRE AREA.

INTERIOR MOUNTING SURFACE MUST

BE CLEAR OF OBSTRUCTIONS.RADIUS.140"

(4 mm)**

3.00" (76 mm)

TYPICAL

1.50" (38 mm)

TYPICAL

3.00" (76 mm)

TYPICAL

1.50" (38 mm)

TYPICAL

.662" (17 mm)

DIAMETER 2.00"

(51 mm)*

DIAMETER

6.25"

(159 mm)

1.320" MIN.

(33.5 mm)

DIA. HOLE

Figure 6. Padlockable handle ote: N For use with interlock systems. Will not function with optional limit plate and weld pins.

2.38" (60.3 mm)

.40" (10.2 mm)

.63" (15.9 mm)

2.00" (50.8 mm)

1.50" (38.1 mm)

1.75" (44.5 mm)

Catalog Data CA800005EN Effective March 2025

V-BLADE

BREAK BEFORE MAKE

SELECTOR BLADE

STRAIGHT BLADE

C

ON-OFF

C C

C

C

C

C

CCA

A

A

A

A

A

A

A

A CB

A CB A CB A CB A CB

A CB A

A

C

C

B

B A C B

A CB

B

A

SELECTOR BLADE

1 BLADE SIDE

SELECTOR BLADE

1 BLADE CENTER

TYPICAL DECAL

STENCIL LAYOUT

VIEW OF

CONTACTS FROM

FRONT (HANDLE)

END OF SWITCH

POSITION 1

FRONT SCHEMATIC

AS SHIPPED AND AS

SHOWN AT LEFT

POSITION 2

SWITCH HANDLE

90° CLOCKWISE

FROM POSITION 1

POSITION 3

SWITCH HANDLE

90° CLOCKWISE

FROM POSITION 2

POSITION 4

SWITCH HANDLE

90° CLOCKWISE

FROM POSITION 3

CLOSE

CLOSE

OPEN OPEN OPEN

OPENOPEN

A-C B-C OPEN OPEN

A-C OPEN B-C OPEN

AB-C B-C OPEN A-C

OPEN OPEN

OPEN OPEN

LINE A TO C

OPEN LINE B TO C

LINE A TO C

CLOSE

SWITCH

TYPE

CLOSE

CLOSE

OPEN OPEN

OPEN

OPEN

LINE B TO C

LINES A & B TO C

LINE A ONLY LINE B ONLY

TO C TO C

OPEN (ALL)

BA

A

A

A

(COIL)

B

C (COIL)

C (COIL)

V-BLADE

MAKE BEFORE BREAK

A CB A CB A CB A CB

AB-C B-C OPEN A-C

LINES A & B TO C

LINE A ONLY LINE B ONLY

TO C TO C

OPEN (ALL)

BA

C (COIL)

T-BLADE

BREAK BEFORE MAKE

A C B A C BA C BA C B

AB-C B-C A-B A-C

LINES A & B TO C

LINES A TO B

C OPEN

LINE A ONLY LINE B ONLY

TO C TO C

A C

B

(COIL)

T-BLADE

MAKE BEFORE BREAK

A C B A C BA C BA C B

AB-C B-C A-B A-C

NOTE:

1. SWITCH CENTER IS PIVOT POINT. BLACK SEGMENTS OF BLADE ROTATE.

WHITE OUTLINED SEGMENTS ARE STATIONARY.

2. OTHER POSITION SEQUENCES AVAILABLE – CONSULT FACTORY FOR DETAILS.

LINES A & B TO C

LINE A ONLY LINE B ONLY

TO C TO C

LINES A TO B

C OPEN

A C

B

(COIL)

(COIL)C

(COIL)C

CLOSE

SCHEMATIC SCHEMATIC

A C BA C B

ROTATED ROTATED ROTATED

SCHEMATIC

Table 4. Wiring schematics

Catalog Data CA800005EN Effective March 2025

Four-position sectionalizing loadbreak switches www.eaton.com/cooperpowerseries ztolf Cloud ztolf Text Box optional loadbreak switching options ztolf Text Box ztolf Highlight

SELECTOR BLADE

1 BLADE SIDE

ztolf Highlight

SELECTOR BLADE

1 BLADE CENTER

ztolf Highlight

V-BLADE

BREAK BEFORE MAKE

ztolf Highlight

V-BLADE

MAKE BEFORE BREAK

ztolf Highlight

T-BLADE

BREAK BEFORE MAKE

ztolf Highlight

T-BLADE

MAKE BEFORE BREAK

Ordering information To order a four-position sectionalizing loadbreak switch, specify the switch type desired from Table 4 and then build the catalog number from Table 5.

Additional information Refer to the following reference literature for application recommendations:

MN800002EN, Sectionalizing Switch Installation Instructions

CP0316, Certified Test Report: 12 kA Four-Position Sectionalizing Loadbreak Switch

CP0313, Certified Test Report: 16 kA Four-Position Sectionalizing Loadbreak Switch

① Pad-lockable handle must be ordered separately.

② Recommended for usage with Fit-On™ end clampstick to provide operator with an increased level of mechanical advantage when performing switching operations.)

Table 6. Accessory parts

Description Catalog number Drawing

Pad-lockable Handle ① per Figure 6 Aluminum 2239000B14 4201093N

Clampstick Leverage Tool ② CS125UFLTOOL –

Table 5. Catalog number selection chart

L S 4 R H 3 T 1 2 B 1 2 3 4 5 6 7 8 9 10

CODE PRODUCT

L LOADBREAK

S SWITCH

4 4-POSITION

CODE INSTALLATION

R RING-MOUNT SYSTEM

CODE ORIENTATION

H HORIZONTAL

V VERTICAL

CODE NUMBER OF PHASES

1 ONE

2 TWO

3 THREE

CODE CONTACT RATING

12 12.5 kA (Table 1) 16 16 kA (Table 2)

CODE ENGAGEMENT

B BREAK BEFORE MAKE

M MAKE BEFORE BREAK*

CODE SWITCH TYPE (See Table 4)

V V - BLADE

T T - BLADE

S STRAIGHT BLADE

D SELECTOR BLADE - (SIDE)

R SELECTOR BLADE - (CENTER)

L SELECTOR BLADE - (ON-OFF)

Note: Vertical mount switches have all externally exposed parts made from stainless steel or brass. Horizontal mount switches have all externally exposed parts made from plated steel, aluminum and brass.

* Make before break switches available in V-and T-Blade only.

Eaton, Cooper Power, and Fit-On are valuable trademarks of Eaton in the U.S. and other countries. You are not permitted to use these trademarks without the prior written consent of Eaton.

IEEE Std C37.71™-2001 standard is a trademark of the Institute of Electrical and Electronics Engineers, Inc., (IEEE). This publication is not endorsed or approved by the IEEE.

IEEE® is a registered trademark of the Institute of Electrical and Electronics Engineers, Inc.

Envirotemp™ and FR3™ are licensed trademarks of Cargill, Incorporated.

Four-position sectionalizing loadbreak switches

Eaton 1000 Eaton Boulevard Cleveland, OH 44122 United States Eaton.com

Eaton’s Cooper Power Systems Division 2300 Badger Drive Waukesha, WI 53188 United States Eaton.com/cooperpowerseries

© 2025 Eaton All Rights Reserved Printed in USA Publication No. CA800005EN / ZD30026 March 2025

Catalog Data CA800005EN Effective March 2025

For Eaton's Cooper Power series loadbreak switch product information call 1-877-277-4636 or visit: www.eaton.com/cooperpowerseries.