Eaton 72W-VAC32 Instructions For Installation, Operation And Maintenance

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W-VAC Breaker Element

W

-

VAC3150A Breaker with Carriage

A

ssembl

y

for Single Tier Switchgear

W-VAC Breaker with Carriage

A

ssembl

y

for Single Tier Switchgea

r

W-VAC Breaker with Cradle

A

ssembl

y

for Double Tier Switchgea

r

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IMPROPERLY INSTALLING OR MAINTAINING

THESE PRODUCTS CAN RESULT IN DEATH, SERI-

OUS PERSONAL INJURY, OR PROPERTY DAMAGE.

READ AND UNDERSTAND THESE INSTRUCTIONS

BEFORE ATTEMPTING ANY UNPACKING, ASSEM-

BLY, OPERATION OR MAINTENANCE OF THE CIR-

CUIT BREAKERS.

INSTALLATION OR MAINTENANCE SHOULD BE

ATTEMPTED ONLY BY QUALIFIED PERSONNEL.

THIS INSTRUCTION BOOK SHOULD NOT BE CON-

SIDERED ALL INCLUSIVE REGARDING INSTALLA-

TION OR MAINTENANCE PROCEDURES. IF FUR-

THER INFORMATION IS REQUIRED, YOU SHOULD

CONTACT EATON.

THE CIRCUIT BREAKER ELEMENTS DESCRIBED IN

THIS BOOK ARE DESIGNED AND TESTED TO

OPERATE WITHIN THEIR NAMEPLATE RATINGS.

OPERATION OUTSIDE OF THESE RATINGS MAY

CAUSE THE EQUIPMENT TO FAIL, RESULTING IN

DEATH, BODILY INJURY AND PROPERTY DAM-

AGE.

ALL SAFETY CODES, SAFETY STANDARDS

AND/OR REGULATIONS AS THEY MAY BE

APPLIED TO THIS TYPE OF EQUIPMENT MUST BE

STRICTLY ADHERED TO.

THESE CIRCUIT BREAKER ELEMENTS ARE

DESIGNED TO BE INSTALLED PURSUANT TO THE

AMERICAN NATIONAL STANDARDS INSTITUTE

(ANSI). SERIOUS INJURY, INCLUDING DEATH, CAN

RESULT FROM FAILURE TO FOLLOW THE PROCE-

DURES OUTLINED IN THIS MANUAL. THESE CIR-

CUIT BREAKER ELEMENTS ARE SOLD PURSUANT

TO A NON-STANDARD PURCHASING AGREEMENT

WHICH LIMITS THE LIABILITY OF THE MANUFAC-

TURER.

Eaton Corporation

Power Components Division

All possible contingencies which may arise during installation, operation or maintenance, and all details and

variations of this equipment do not purport to be covered by these instructions. If further information is

desired by purchaser regarding his particular installation, operation or maintenance of particular equipment,

contact an Eaton representative.

WARNING WARNING

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TABLE OF CONTENTS

SECTION 1 INTRODUCTION

PAGE

1-1

Type W-VAC, W-VACR and W-VACW Breaker Ratings ....................................................................................... 1

SECTION 2 SAFE PRACTICES

SECTION 3 RECEIVING, HANDLING AND STORAGE

3-1 Receiving ............................................................................................................................................................... 14

3-2 Handling ................................................................................................................................................................ 15

3-3 Storage .................................................................................................................................................................. 15

SECTION 4 INSTALLATION

4-1 Initial Inspection and Operation ............................................................................................................................ 22

4-2 Manual Operation Check ...................................................................................................................................... 22

4-3 Vacuum Interrupter Integrity ................................................................................................................................. 22

4-4 Insulation ............................................................................................................................................................... 22

4-5 Contact Erosion and Wipe .................................................................................................................................... 22

4-6 Primary Circuit Resistance .................................................................................................................................... 22

4-7 Nameplate ............................................................................................................................................................. 22

4-8 Electrical Operations Check .................................................................................................................................. 22

4-9 Breaker/Compartment Interface Check ................................................................................................................ 24

SECTION 5 DESCRIPTION AND OPERATION

5-1 Interrupter Assembly ............................................................................................................................................. 26

5-1.1 Vacuum Interrupter ............................................................................................................................................... 26

5-1.2 Contact Erosion Indicator (Except 3150A) ........................................................................................................... 27

5-1.3 Contact Erosion Indicator (3150A Only) ............................................................................................................... 27

5-1.4 “T” Cutout Loading Spring Indicator ...................................................................................................................... 28

5-1.5 Contact Wipe and Stroke ...................................................................................................................................... 28

5-1.6 Pole Unit Support Molding .................................................................................................................................... 28

5-2 Stored Energy Mechanism .................................................................................................................................... 29

5-2.1 Operation of Stored Energy Mechanism .............................................................................................................. 29

5-2.2 Charging ................................................................................................................................................................ 29

5-2.3 Closing Operation .................................................................................................................................................. 29

5-2.4 Tripping Operation................................................................................................................................................. 32

5-2.5 Trip Free Operation ............................................................................................................................................... 32

5-3 Control Scheme ............................................................................................................

........................................ 32

5-3.1 Timing .................................................................................................................................................................... 32

5-3.2 Secondary Disconnects ........................................................................................................................................ 32

5-3.3 Undervoltage Trip Device...................................................................................................................................... 33

5-4 Interlocks ............................................................................................................................................................... 33

5-4.1 Floor Tripping, Spring Release and Anti-Latch Interlocks .................................................................................... 33

5-4.2 Levering Interlock .................................................................................................................................................. 33

5-4.3 Anti-Close Interlock ............................................................................................................................................... 33

5-4.4 Earthing Drive Interlock ......................................................................................................................................... 33

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5-5 Miscellaneous ........................................................................................................................................................ 36

5-5.1 Earthing Contact .................................................................................................................................................... 36

5-5.2 Operations Counter ............................................................................................................................................... 36

5-6 Levering Mechanism .............................................................................................................................................. 36

5-7 Circuit Breaker Interfacing ..................................................................................................................................... 36

5-7.1 Electrical Clearances ............................................................................................................................................. 36

SECTION 6 INSPECTION AND MAINTENANCE

6-1 Warning .................................................................................................................................................................. 37

6-2 Frequency of Inspection ........................................................................................................................................ 37

6-3 Inspection and Maintenance Procedures .............................................................................................................. 38

6-4 Vacuum Interrupter Integrity Test .......................................................................................................................... 37

6-5 Contact Erosion (Except 3150A) ........................................................................................................................... 40

6-5.1 Contact Erosion (3150A Only) .............................................................................................................................. 40

6-5.2 Contact Wipe (All Ratings) .................................................................................................................................... 40

6-6 Insulation ................................................................................................................................................................ 41

6-7 Insulation Integrity Check ...................................................................................................................................... 41

6-8 Primary Circuit Resistance Check ......................................................................................................................... 42

6-9 Mechanism Check ................................................................................................................................................. 42

6-9.1 CloSure Test .......................................................................................................................................................... 42

6-10 Lubrication .......................................................................................................................................................... 47

6-11 Troubleshooting Chart ........................................................................................................................................ 47

SECTION 7 RENEWAL PARTS

7-1 General .................................................................................................................................................................. 50

7-2 Ordering Instructions ............................................................................................................................................. 50

FIGURES

Figure Title Page

1-1 Type W-VACR 630A Breaker Element Only Outline Dimensions (millimeters) & Weights (Kilograms) .... 3

1-2 Type W-VACR 630A Breaker Element Only Outline Dimensions (millimeters) & Weights (Kilograms) .... 4

1-3 Type W-VACR 800/1250A Breaker Element Only Outline Dimensions (millimeters) & Weights (kg) ....... 5

1-4 Type W-VACR 800/1250A Breaker Element Only Outline Dimensions (millimeters) & Weights (kg) ....... 6

1-5 Type W-VACR 800/1250A Breaker Element Only Outline Dimensions (millimeters) & Weights (kg) ....... 7

1-6 Type W-VACR 2000A Breaker Element Only Outline Dimensions (millimeters) & Weights (kg) .............. 8

1-7 Type W-VACR 2500A Breaker Element Only Outline Dimensions (millimeters) & Weights (kg) .............. 9

1-8 Type W-VAC Breaker Element Only Outline Dimensions (millimeters) and Weights (Kilograms) .......... 10

1-9 Outline and Dimensions (mm) Type W-VAC Breaker Element with Carriage

Assembly and Cradle Assembly ........................................................................................................................ 11

1-10 Outline and Dimensions (mm) Type W-VAC 3150 Breaker with Carriage Assembly .............................. 12

3-1 Typical VCP-W Tools and Accessories .......................................................................................................14

3-2 Typical Front View VCP-W Vacuum Circuit Breaker Element ................................................................... 16

3-3 Typical VCP-W Vacuum Circuit Breaker Element with Front Cover Removed ....................................... 17

3-4 Typical Rear View VCP-W Vacuum Circuit Breaker Element ................................................................... 18

3-5 Typical VCP-W Vacuum Circuit Breaker Element Escutcheon ................................................................. 19

3-6 Front and Rear External View W-VAC Breaker With Cradle Assembly for

Double Tier Switchgear ...............................................................................................................................20

3-7 Front and Rear External View W-VAC 3150A Breaker with Carriage Assembly for

Single Tier Switchgear .................................................................................................................................21

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4-1 Type W-VAC Breaker Manual Operation (Single Tier Breaker Shown) .................................................. 23

5-1 Flush Mounted Configuration. ..................................................................................................................... 26

5-2 Behind the Door Configuration ................................................................................................................... 27

5-3 Closeup of Type W-VAC Breaker Vacuum Interrupters and Current Carrying System ........................... 27

5-4 a Type W-VAC 95 kV BIL Breaker Shown With Left Hand Cover Removed for Clarity Purposes ............. 28

5-4 b Type W-VAC 3150 Ampere Breaker Closeup of Completely Enclosed Pole Units ................................. 28

5-5 Closing Cam and Trip Linkage ................................................................................................................... 30

5-6 Charging Schematic .................................................................................................................................... 31

5-7 Typical DC and AC Control Schemes. ..................................................................................................... 34

5-8 Undervoltage Trip Device Configuration ..................................................................................................... 35

5-9 Closeup of Type W-VACW Breaker Vacuum Interrupters and Current Carrying System ....................... 36

6-1 Lubrication Points ........................................................................................................................................ 37

6-2 Vacuum Interrupter Showing Contact Erosion Indicator With Breaker Open .......................................... 40

6-3 Vacuum Interrupter Showing Contact Erosion Indicator With Breaker Closed ........................................ 40

6-4 Breaker Shown Closed and Interrupter Erosion Satisfactory (3150A). .................................................... 41

6-5 Breaker Shown Colsed and Interrupter Erosion Unsatisfactory (3150A). ................................................ 41

6-6 “T” Contact Wipe Indicator .......................................................................................................................... 42

6-7 Wipe Indication ............................................................................................................................................ 42

TABLES

Table

Title

Page

1.1 Type W-VAC and W-VACW Vacuum Circuit Breaker Ratings .................................................................... 1

1.2 Type W-VACR Vacuum Circuit Breaker Ratings ......................................................................................... 2

5.1 Typical Opening and Closing Times Value ................................................................................................ 32

6.1 Test Voltage. ............................................................................................................................................... 39

6.2 Typical Resistance Measurements ............................................................................................................. 42

7.1 Recommended W-VAC and W-VACW Spare Parts .................................................................................. 50

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SECTION 1: INTRODUCTION

The purpose of this book is to provide instructions for

unpacking, storage, installation, operation and mainte-

nance of Types W-VAC, W-VACR, and W-VACW

Vacuum Circuit Breakers. They are a horizontal drawout

type removable interrupting element design, unless

there is an “R” in the designation.The “R” as in W-VACR

indicates a fixed breaker configuration. They were

designed specifically to IEC 56 Standards for reliable

performance. All types can be applied in single tier or

double tier switchgear applications, with the basic

breaker element applicable to retrofitting. Reliable con-

trol and protection are achieved though the use of the

W-VAC family of breakers.

1-1 W-VAC, W-VACR AND W-VACW RATINGS

SATISFACTORY PERFORMANCE OF THESE

BREAKERS IS CONTINGENT UP-ON PROPER

APPLICATION, CORRECT INSTALLATION AND

ADEQUATE MAINTENANCE. THIS INSTRUCTION

BOOK MUST BE CAREFULLY READ AND FOL-

LOWED IN ORDER TO OBTAIN OPTIMUM PERFOR-

MANCE FOR LONG USEFUL LIFE OF THE CIRCUIT

BREAKERS.

TYPES W-VAC, W-VACR AND W-VACW BREAKERS

ARE PROTECTIVE DEVICES, AS SUCH, THEY ARE

MAXIMUM RATED DEVICES. THEREFORE, THEY

SHOULD NOT UNDER ANY CIRCUMSTANCES BE

APPLIED OUTSIDE THEIR NAMEPLATE RATINGS.

Table 1.1 Type W-VAC and W-VACW Vacuum Circuit Breaker Ratings

Circuit

Breaker

Type

Rated

Voltage

at

50-60HZ

Frequency

Rated Short Circuit

Breaking Current

& Short Circuit

Duration

Rated Insulation Level

Short

Circuit

Making

Current

Rated Nominal Current

Lighting

Pulse

Withstand

Voltage

Powe

r

Frequency

Withstand

Voltage



kV

Hz

kA

Sec

kV

kA

(Peak) Amperes

36W-VAC25

3.6 50/60 25 3 40 10 63

630, 1250, 2000,3150

72W-VAC16

7.2 50/60 16 3 60 20 40

630, 800, 1250

72W-VAC20

7.2 50/60 20 3 60 20 50

630, 800, 1250, 1600

72W-VAC25

7.2 50/60 25 3 60 20 63

630, 800, 1250, 1600, 2000,3150

72W-VAC32

7.2 50/60 31.5 3 60 20 79

1250, 2000

72W-VAC40

7.2 50/60 40 3 60 20 100 3150

120W-VAC16

12 50/60 16 3 75 28 40

630, 800, 1250

120W-VAC20

12 50/60 20 3 75 28 50

630, 800, 1250, 1600

120W-VAC25

12 50/60 25 3 75 28 63

630, 800, 1250, 1600, 2000,3150

120W-VAC32

12 50/60 31.5 3 75 28 79

1250, 2000

120W-VAC40

12 50/60 40 3 75 28 100

1250, 2000,3150

120W-VAC50

12 50/60 50 3 75 28 125 3150

150W-VAC16

15 50/60 16 3 95 36 40

630, 800, 1250

150W-VAC20

15 50/60 20 3 95 36 50

630, 800, 1250, 1600

150W-VAC25

15 50/60 25 3 95 36 63

630, 800, 1250, 1600, 2000,3150

150W-VAC32

15 50/60 31.5 3 95 36 79

1250, 2000

150W-VAC40

15 50/60 40 3 95 36 100 3150

150W-VAC50

15 50/60 50 3 95 36 125 3150

175W-VAC16

17.5 50/60 16 3 95 38 40

630, 800, 1250

175W-VAC20

17.5 50/60 20 3 95 38 50

630, 800, 1250, 1600

175W-VAC25

17.5 50/60 25 3 95 38 63

630, 800, 1250, 1600, 2000,3150

175W-VAC32

17.5 50/60 31.5 3 95 38 79

630, 800, 1250, 1600

175W-VAC40

17.5 50/60 40 3 95 38 100 3150

120W-VACW16

12 50/60 16 3 75 42 40

630, 800, 1250

120W-VACW20

12 50/60 20 3 75 42 50

630, 800, 1250, 1600

120W-VACW25

12 50/60 25 3 75 42 63

630, 800, 1250, 1600, 2000

120W-VACW32

12 50/60 31.5 3 75 42 79

1250, 1600, 2000

120W-VACW40

12 50/60 40 3 75 42 100

1250, 2000

150W-VACW16

15 50/60 16 3 95 42 40

630, 800, 1250

150W-VACW20

15 50/60 20 3 95 42 50

630, 800, 1250, 1600

150W-VACW25

15 50/60 25 3 95 42 63

630, 800, 1250, 1600, 2000

150W-VACW32

15 50/60 31.5 3 95 42 79

1250, 2000

150W-VACW40

15 50/60 40 3 95 42 100

1250, 2000

WARNING

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Table 1.2 Type W-VACR Vacuum Circuit Breaker Ratings

Circuit

Breaker

Type

Rated

Voltage

at

50-60HZ

Frequency

Rated Short Circuit

Breaking Current

& Short Circuit

Duration

Rated Insulation Level

Short

Circuit

Making

Current

Rated Nominal Current

Lighting

Pulse

Withstand

Voltage

Powe

r

Frequency

Withstand

Voltage



kV

Hz

kA

Sec

kV

kA

(Peak) Amperes

36W-VACR16

3.6 50/60 16 3 40 20 40

630, 800, 1250,

36W-VACR20

3.6 50/60 20 3 40 20 50

630, 800, 1250

36W-VACR25

3.6 50/60 25 3 40 20 63

630, 800, 1250, 2000

72W-VACR16

7.2 50/60 16 3 60 20 40

630, 800, 1250

72W-VACR20

7.2 50/60 20 3 60 20 50

630, 800, 1250

72W-VACR25

7.2 50/60 25 3 60 20 63

630, 800, 1250, 2000

72W-VACR32

7.2 50/60 31.5 3 60 20 80

1250, 2000

72W-VACR40

7.2 50/60 40 3 60 20 100

1250, 2000

120W-VACR16

12 50/60 16 3 75 28 40

630, 800, 1250

120W-VACR20

12 50/60 20 3 75 28 50

630, 800, 1250

120W-VACR25

12 50/60 25 3 75 28 63

630, 800, 1250, 2000

120W-VACR32

12 50/60 31.5 3 75 28 80

1250, 2000

120W-VACR40

12 50/60 40 3 75 28 100

1250, 2000

120W-VACR50

12 50/60 50 3 75 28 125

1250, 2000, 2500

150W-VACR16

12 50/60 16 3 95 36 40

630, 800, 1250

150W-VACR20

12 50/60 20 3 95 36 50

630, 800, 1250

150W-VACR25

12 50/60 25 3 95 36 63

630, 800, 1250, 2000

150W-VACR32

12 50/60 31.5 3 95 36 80

1250, 2000

150W-VACR40

12 50/60 40 3 95 36 100

1250, 2000

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630A Element

630A = 105kg

Figure 1-1 Type W-VACR 630A. breaker element only outline dimensions (millimeters) and weights (kilograms).

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630A Element

630A = 105kg

Figure 1-2 Type W-VACR 630A. breaker element only outline dimensions (millimeters) and weights (kilograms).

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800/1250A Element

800A/1250A = 110kg

Figure 1-3 Type W-VACR 800/1250A. breaker element only outline dimensions (millimeters) and weights (kilograms).

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800/1250A Element

800A/1250A = 110kg

Figure 1-4 Type W-VACR 800/1250A. breaker element only outline dimensions (millimeters) and weights (kilograms).

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2000A Element

2000A = 149kg

Figure 1-5 Type W-VACR 2000A. breaker element only outline dimensions (millimeters) and weights (kilograms).

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2000A Element

2000A = 149kg

Figure 1-6 Type W-VACR 2000A. breaker element only outline dimensions (millimeters) and weights (kilograms).

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2500A Element

2500A = 154kg

Figure 1-7 Type W-VACR up to 2500A, 50kA. breaker element only outline dimensions (millimeters) and weights (kg.).

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Up to 1250A Element

630A = 115kg

800A/1250A = 121kg

(Front View) (Side View)

(Front View)

1600A & 2000A Elements

1600A/2000A = 160kg

(Side View)

Figure 1-8 Type W-VAC breaker element only outline dimensions (millimeters) and weights (kilograms).

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33.3

570

A

350

G

197

325

202

F

373

“A” POLE

“B” POLE

“C” POLE

19.34

9.5

Earthing Contacts

Rating

A

B

C

D

E

F

G

Weight Carriage

Up to 15 kV/Up to 1250A to 40kA

570 300 1226 1202 1340 165 470 29

Up to 15 kV/1600A and2000A/Up to 40 kA

719 350 1299 1275 1340 200 620 33

33.3

A

570

G

197

202

373

F

“C” POLE

“A” POLE

“B” POLE

Earthing Contacts

440

701

44.6

269

84.4

456.6

538

48.3

228.3

Rating

A

B

C

D

E

F

G

Weight Carriage

Up to 15 kV/Up to 1250A to 40kA

490 300 786 762 738 165 470 23

Up to 15 kV/1600A and2000A/Up to 40 kA

640 350 856 835 736 200 620 25

Figure 1-9 Outline and Dimensions (mm) Type W-VAC breaker element with carriage assembly and cradle assembly

C

E

720

C

1160

80

520

480

795.7

B

355.7

B

D

E

D

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Figure 1-10 Outline and Dimensions (mm) Type W-VAC 3150 breaker with carriage assembly

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SECTION 2: SAFE PRACTICES

W-VAC, W-VACR, and W-VACW breakers are

equipped with high speed, high energy operating mech-

anisms. They are designed with several built-in inter-

locks and safety features to provide safe and proper

operating sequences.

• Do not work on a breaker with the secondary test cou-

pler engaged or fixed secondary connections made.

Failure to disconnect the test coupler could result in an

electrical shock leading to death, personal injury or

property damage.

• Do not work on a closed breaker or a breaker with

closing springs charged. The closing spring should be

discharged and the main contacts open before working

on the breaker. Failure to do so could result in cutting or

crushing injuries.

TO PROTECT THE PERSONNEL ASSOCIATED WITH

INSTALLATION, OPERATION, AND MAINTENANCE

OF THESE BREAKERS, THE FOLLOWING PRAC-

TICES MUST BE FOLLOWED:

• Only qualified persons, as defined in the local electri-

cal code who are familiar with the installation and main-

tenance of medium voltage circuits and equipment,

should be permitted to work on these breakers.

• Read these instructions carefully before attempting

any installation, operation or maintenance of these

breakers.

• Always remove the removable breakers from their

enclosures or disconnect the fixed primary connections

associated with fixed breakers before performing any

maintenance. Failure to do so could result in electrical

shock leading to death, severe personal injury or prop-

erty damage.

• Do not use a drawout circuit breaker by itself as the

sole means of isolating a high voltage circuit, Remove

the breaker to the Disconnect position and follow good

lock-out and tagging rules, as well as all applicable

codes, regulations and work rules.

• Do not leave a drawout breaker in an intermediate

position in the cell. Always have the breaker either in the

Test or Connected position. Failure to do so could result

in a flash over and possible death, personal injury or

property damage.

• Always remove the maintenance tool from the breaker

after charging the closing springs.

• Circuit breaker elements are equipped with safety

interlocks. Do Not remove, interfere with or in any

manner defeat them. This may result in death, bodily

injury or equipment damage.

WARNING

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SECTION 3: RECEIVING, HANDLING AND

STORAGE

The entire W-VAC family of circuit breakers is subjected

to complete factory production tests and inspection

before being packed. They are shipped in packages

designed to provide maximum protection to the equip-

ment during shipment and storage, and, at the same

time, to provide convenient handing. Accessories, such

as the maintenance tool and levering crank are shipped

separately.

3-1 RECEIVING

Until the breaker is ready to be delivered to the

switchgear site for installation, DO NOT remove it from

its container. If the breaker is to be placed in storage,

maximum protection can be obtained by keeping it in its

container.

Upon receipt of the equipment, inspect the container for

any signs of damage or rough handing. Open the con-

tainer carefully to avoid any damage to the contents.

When opening the container, be careful that any loose

items or hardware are not discarded with the packing

material. Check the contents of each package against

the packing list.

Examine the breaker for any signs of shipping damage

such as broken, missing or loose hardware, damaged or

deformed insulation and other components. File claims

immediately with the carrier if damage or loss is detect-

ed and notify the nearest Eaton Sales Office.

Tools and Accessories

Maintenance Tool: Used to charge the closing springs.

(Style 8064A02G01)

Lifting Yoke: Optional item used to lift the breaker.

(Style 8794C67G01 for up to 1250A breakers)

(Style 8794C68G01 for 1600A, 2000A breakers)

(Style 1C95990G01 for 3150A breakers)

Primary Disconnect Plier: Used to install and remove

breaker primary disconnects.

(Style 591C901G02)

Figure 3-1 Typical tools with lifting yoke shown in use

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Eaton 72W-VAC32 Instructions For Installation, Operation And Maintenance

Eaton 72W-VAC32 Instructions For Installation, Operation And Maintenance

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