Eaton B20B-VR Series User manual

For more information visit: www.EatonElectrical.comIB01301018E
I.B. 94A1994R01
Instructions for VR-Series Replacement Breakers for Westinghouse Type B20B / B22B
(B22B-VR-500-1200A)

For more information visit: www.EatonElectrical.com
Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
I.B. 94A1994R01
Page 1Effective: April 2005
IB01301018E
IMPROPERLY INSTALLING OR MAINTAINING THESE PRODUCTS
CAN RESULT IN DEATH, SERIOUS PERSONAL INJURY OR
PROPERTYDAMAGE.
READAND UNDERSTAND THESE INSTRUCTIONS BEFORE
ATTEMPTING ANY UNPACKING,ASSEMBLY, OPERATION OR
MAINTENANCE OF THE CIRCUIT BREAKERS.
INSTALLATION OR MAINTENANCE SHOULD BEATTEMPTED
ONLY BY QUALIFIED PERSONNEL. THIS INSTRUCTION BOOK
SHOULD NOT BE CONSIDEREDALL INCLUSIVE REGARDING
INSTALLATION OR MAINTENANCE PROCEDURES. IF FURTHER
INFORMATION IS REQUIRED, YOU SHOULD CONSULT
EATON’S ELECTRICAL SERVICES & SYSTEMS.
THE CIRCUIT BREAKERS DESCRIBED IN THIS BOOKARE
DESIGNED AND TESTED TO OPERATE WITHIN THEIR NAME-
PLATE RATINGS. OPERATION OUTSIDE OF THESE RATINGS
MAY CAUSE THE EQUIPMENT TO FAIL, RESULTING IN
DEATH, BODILY INJURY AND PROPERTY DAMAGE.
ALL SAFETY CODES, SAFETY STANDARDS AND/OR REGULA-
TIONS AS THEY MAY BE APPLIED TO THIS TYPE OF EQUIP-
MENT MUST BE STRICTLY ADHERED TO.
THESECIRCUIT BREAKER ELEMENTSAREDESIGNED TO BE
INSTALLED PURSUANT TO THEAMERICAN NATIONAL STAN-
DARDS INSTITUTE (ANSI). SERIOUS INJURY, INCLUDING
DEATH, CAN RESULT FROM FAILURE TOFOLLOW THE PROCE-
DURES OUTLINED IN THIS MANUAL. THESE CIRCUIT BREAKER
ELEMENTSARE SOLD PURSUANT TO ANON-STANDARD
PURCHASINGAGREEMENT WHICH LIMITS THE LIABILITY OF
THE MANUFACTURER.
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 equip-
ment, contact a Cutler-Hammer representative at Eaton Corporation.
Eaton’s Electrical
Services & Systems
Power Breaker Center
310 Maxwell Avenue
Greenwood, SC 29646
WARNING
WARNING

For more information visit: www.EatonElectrical.com
Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
IB01301018E
I.B. 94A1994R01
Page 2 Effective: April 2005
Table of Contents
SECTION1: INTRODUCTION................................................................................................................................... 5
1.1 AVAILABLE B20B / B22B-VR BREAKERS ...................................................................................................................................................... 5
SECTION 2: SAFE PRACTICES............................................................................................................................. 7
SECTION3: RECEIVING,HANDLINGAND STORAGE ............................................................................................ 8
3.1 RECEIVING ........................................................................................................................................................................................................ 8
3.2 HANDLING ........................................................................................................................................................................................................ 8
3.3 STORAGE........................................................................................................................................................................................................... 9
3.4 B20B / B22B-VRAPPROXIMATE WEIGHTS ................................................................................................................................................... 9
SECTION 4: INSTALLATIONAND INSPECTION ................................................................................................. 12
4.1 EXAMINATION FOR DAMAGE ....................................................................................................................................................................... 12
4.1.1 NAMEPLATE VERIFICATION ...................................................................................................................................................................... 12
4.2 OPERATIONAL POSITIONS ........................................................................................................................................................................... 12
4.3 MANUAL OPERATIONAL CHECKS............................................................................................................................................................... 12
4.4 VACUUM INTEGRITY CHECKS ..................................................................................................................................................................... 13
4.5 APPLIED POTENTIAL TEST (INSULATION CHECK) ................................................................................................................................... 13
4.6 CONTACT EROSION AND STROKE, CONTACT WIPE ................................................................................................................................. 13
4.7 PRIMARY CIRCUIT BREAKER RESISTANCE TESTS ................................................................................................................................... 13
4.8 CELL PREPARATION & ELECTRICAL OPERATIONALCHECKS................................................................................................................ 13
4.9 INSERTIONPROCEDURE ................................................................................................................................................................................ 14
4.10 REMOVAL PROCEDURE .............................................................................................................................................................................. 15
SECTION5: DESCRIPTIONAND OPERATION .................................................................................................................................................... 16
5.1 VACUUM INTERRUPTER ................................................................................................................................................................................ 16
5.1.1 THE INTERRUPTER ASSEMBLY ................................................................................................................................................................. 16
5.1.2 CONTACT EROSION INDICATOR ............................................................................................................................................................... 16
5.1.3 CONTACT WIPE AND STROKE .................................................................................................................................................................. 17
5.2 PHASEBARRIERS .......................................................................................................................................................................................... 17
5.3 BUSHINGS AND DISCONNECTING CONTACTASSEMBLIES ..................................................................................................................... 17
5.4 STORED ENERGY MECHANISM .................................................................................................................................................................... 17
5.4.1 CLOSING SPRING CHARGING ................................................................................................................................................................... 18
5.4.2 CLOSING OPERATION ................................................................................................................................................................................ 18
5.4.3 TRIPPING OPERATION ................................................................................................................................................................................ 18
5.4.4 TRIP-FREEOPERATION .............................................................................................................................................................................. 18
5.5 CONTROL SCHEMES..................................................................................................................................................................................... 18
5.6 SECONDARYCONNECTION BLOCK............................................................................................................................................................. 19
5.7 INTERLOCKS .................................................................................................................................................................................................. 19
5.7.1 ANTI-CLOSE INTERLOCK .......................................................................................................................................................................... 19
5.7.2 SHUTTER INTERLOCK ................................................................................................................................................................................ 19
5.7.3 RACKING SYSTEM CAM INTERLOCK ...................................................................................................................................................... 19
5.8 MOC (Mechanically Operated Contacts) OPERATOR ............................................................................................................................ 19
5.9 TOC (Truck Operated Contacts) OPERATOR .......................................................................................................................................... 24
5.10 STATIC GROUNDING CONTACT ................................................................................................................................................................. 24
SECTION6: INSPECTION AND MAINTENANCE .................................................................................................. 25
6.1 INTRODUCTION .............................................................................................................................................................................................. 25
6.2 FREQUENCYOF INSPECTION ....................................................................................................................................................................... 25
6.3 INSPECTION AND MAINTENANCEPROCEDURES ....................................................................................................................................... 26
6.4 VACUUM INTERRUPTER INTEGRITY TEST.................................................................................................................................................. 27
6.5 CONTACT EROSIONAND WIPE .................................................................................................................................................................... 27
6.6 INSULATION ................................................................................................................................................................................................... 28
6.7 INSULATION INTEGRITYCHECK .................................................................................................................................................................. 28
6.8 PRIMARY CIRCUIT RESISTANCE CHECK .................................................................................................................................................... 29
6.9 MECHANISM CHECK ..................................................................................................................................................................................... 29
6.9.1 CLOSURETM TEST ..................................................................................................................................................................................... 29
6.10 LUBRICATION............................................................................................................................................................................................... 34
SECTION7: REPLACEMENT PARTS ................................................................................................................... 37
7.1 GENERAL ........................................................................................................................................................................................................ 37
7.1.1 ORDERING INSTRUCTIONS ........................................................................................................................................................................ 37

For more information visit: www.EatonElectrical.com
Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
I.B. 94A1994R01
Page 3Effective: April 2005
IB01301018E
Tables
Table 1.1 - B20B / B22B-VR Vacuum Circuit Breaker Availability and Interchangeability ..................................................... 5
Table 1.2 - B20B / B22B-VR Dimensions in Inches .................................................................................................................. 6
Table 3.1 - Weight by Breaker Type .......................................................................................................................................... 9
Table 5.1 - Time Per Event ....................................................................................................................................................... 18
Table 6.1 - Voltages.................................................................................................................................................................. 27
Table 6.3 - Proper Lubrication Times Per Rating .................................................................................................................. 34
Table 6.2 - CloSureTM Tool Mounting/Testing Locations by Circuit Breaker Type ................................................................ 33
Table 6.4 - Troubleshooting Chart ........................................................................................................................................... 34

For more information visit: www.EatonElectrical.com
Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
IB01301018E
I.B. 94A1994R01
Page 4 Effective: April 2005
Figures
Figure 1-1 Outline and Dimensions in inches of Type B20B / B22B-VR Breakers (B22B-VR Shown) .............................................6
Figure 3-1 B20B / B22B-VR Tools and Accessories ..............................................................................................................................8
Figure 3-2 Overhead Lifting of B22B-VR ................................................................................................................................................8
Figure 3-3 Front External View of Breaker (B22B-VR Shown) ..........................................................................................................10
Figure 3-4 Back External View of Breaker (B22B-VR Shown) ........................................................................................................... 11
Figure 4-1 Alignment of B20B/B22B-VR (B22B-VR Shown).................................................................................................................13
Figure 4-2 Insertion of B20B/B22B-VR (B22B-VR Shown) ...................................................................................................................13
Figure 4-3 B20B/B22B-VR Test / Disconnect Position (B22B-VR Shown) ..........................................................................................14
Figure 4-4 Rack-In Position of Handle..................................................................................................................................................15
Figure 4-5 B20B/B22B-VR Connected Position (B22B-VR Shown) .....................................................................................................15
Figure 5-1 B20B/B22B-VR Interrupter ...................................................................................................................................................16
Figure 5-2 B20B/B22B-VR Interrupter Assembly ................................................................................................................................16
Figure 5-3 Ground Plate Alignment Check .........................................................................................................................................17
Figure 5-4 B22B-VR Vacuum Element - Front Faceplate Removed...................................................................................................20
Figure 5-5 Closing Cam and Trip Linkage...........................................................................................................................................21
Figure 5-6 Charging Schematic ............................................................................................................................................................22
Figure 5-7 TypicalAC/DC Schematic ....................................................................................................................................................23
Figure 5-8 TOC Operator .......................................................................................................................................................................24
Figure 5-9 Static Grounding Contact....................................................................................................................................................24
Figure 6-1 Lubrication Areas................................................................................................................................................................25
Figure 6-2 Vacuum Interrupter Showing Contact Erosion Indicator With Breaker Open .............................................................28
Figure 6-3 Vacuum Interrupter Showing Contact Erosion Indicator With Breaker Closed ..........................................................28
Figure 6-4 The Arrow Shows The “T” Contact Wipe Indicator - Example with Blue Spring.........................................................29
Figure 6-5 Wipe Indication Procedure .................................................................................................................................................29
Figure 6-6 Status Indicators .................................................................................................................................................................30
Figure 6-7 Wrapping Tape Around Cam ..............................................................................................................................................30
Figure 6-8 Attaching CloSureTM Test Tool at Hole “A” & “B” ............................................................................................................31
Figure 6-9 Manually Charging Closing Springs..................................................................................................................................31
Figure 6-10 Make a Clear and Heavy Mark ..........................................................................................................................................31
Figure 6-11 With Marker in Hole “C”, While Closing Breaker ...........................................................................................................31
Figure 6-12 Move the Sharpie®15oLeft and Right.............................................................................................................................31
Figure 6-13 Top view of Cam and Marker Interface ..........................................................................................................................32
Figure 6-14 Evaluate the CloSureTM Performance .............................................................................................................................32
Figure 6-15 Determining the Distance Traveled.................................................................................................................................32
Figure 6-16 Illustrative Testing Tape Sample .....................................................................................................................................32
Figure 6-17 Front View of CloSureTM Tool Showing Mounting / Testing Hole Locations ..............................................................32
Figure 6-18 Typical Circuit Breaker Front View with CloSureTM Tool Attached...............................................................................33

For more information visit: www.EatonElectrical.com
Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
I.B. 94A1994R01
Page 5Effective: April 2005
IB01301018E
SECTION1: INTRODUCTION
The purpose of this book is to provide instructions for receiving and
handling, storage, installation, operation and maintenance of B20B /
B22B Type Vacuum Replacement Circuit Breakers (also referred to
as VR-Series). The vacuum unit replacement breakers are
designed to be used in existing Westinghouse type B20B / B22B
metal-enclosed switchgear. VR-Series Circuit Breakers provide
reliable control, protection and performance, with ease of handling
and maintenance. Like ratings are interchangeable with each other.
1.1 AVAILABLE B20B / B22B-VR BREAKERS
Refer to Table 1.1
SATISFACTORY PERFORMANCE OFTHESEBREAKERS IS
CONTIGENT UPON PROPERAPPLICATION, CORRECT INSTALLA-
TION AND ADEQUATE MAINTENANCE. THIS INSTRUCTION
BOOK MUST BE CAREFULLY READAND FOLLOWED IN ORDER
TO OBTAIN OPTIMUM PERFORMANCE FOR LONG USEFUL LIFE
OFTHE CIRCUIT BREAKERS.
VR-SERIESBREAKERSAREPROTECTIVE DEVICES,ASSUCH,
THEYARE MAXIMUM RATED DEVICES. THEREFORE, THEY
SHOULD NOT UNDERANY CIRCUMSTANCE BEAPPLIED
OUTSIDE THEIR NAMEPLATE RATINGS.
Table 1.1 - B20B / B22B-VR Vacuum Circuit Breaker Availability and Interchangeability
WARNING
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61.4051002105242.10691926379/85
2.7052002100552.159633314111/66
8.3100
500210053.15963813226/73
8.310050021U0053.15963726379/85

For more information visit: www.EatonElectrical.com
Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
IB01301018E
I.B. 94A1994R01
Page 6 Effective: April 2005
Table 1.2 - B20B / B22B-VR Dimensions in Inches (B22B-VR Shown)
Figure 1-1 Outline and Dimensions in inches of Type B20B / B22B-VR Breakers (B22B-VR Shown)
A
B
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A0021/00520.7405.4252.538.4260.3232.4152.4200.844.64

For more information visit: www.EatonElectrical.com
Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
I.B. 94A1994R01
Page 7Effective: April 2005
IB01301018E
SECTION 2: SAFE PRACTICES
VR-Series breakers are equipped with high speed, high energy
operating mechanisms. They are designed with several built-in
interlocks and safety features to provide safe and proper operating
sequences.
TOPROTECT THE PERSONNELASSOCIATED WITH INSTALLA-
TION, OPERATION, AND MAINTENANCE OF THESE BREAKERS,
THE FOLLOWING PRACTICES MUST BE FOLLOWED:
yy
yy
yOnly qualified persons, as defined in the National
Electrical Safety Code, who are familiar with the
installation and maintenance of medium voltage
circuits and equipment, should be permitted to
work on these breakers.
yy
yy
yRead these instructions carefully before attempt-
ing any installation, operation or maintenance of
these breakers.
yy
yy
yAlways remove the breaker from the enclosure
before performing any maintenance. Failure to
do so could result in electrical shock leading to
death, severe personnel injury or property
damage.
yy
yy
yDo not work on a breaker with the secondary test
coupler engaged. Failure to disconnect the test
coupler could result in an electrical shock leading
to death, personnel injury or property damage.
yy
yy
yDo 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.
yy
yy
yDo not use a circuit breaker by itself as the sole
means of isolating a high voltage circuit. Remove
the breaker to the Disconnect position and follow
all lockout and tagging rules of the National
Electrical Code and any and all applicable codes,
regulations and work rules.
yy
yy
yDo not leave the breaker in an intermediate
position in the cell. Always have the breaker
either in the Test / Disconnect or Connected
position. Failure to do so could result in a flash
over and possible death, personnel injury or
property damage.
yy
yy
yAlways remove the maintenance tool from the
breaker after charging the closing springs.
yy
yy
yBreakers are equipped with safety interlocks. Do
not defeat them. This may result in death, bodily
injury or equipment damage.
WARNING

For more information visit: www.EatonElectrical.com
Instructions for VR-Series
Replacement Breakers for
Westinghouse Type B20B/B22B
IB01301018E
I.B. 94A1994R01
Page 8 Effective: April 2005
SECTION3: RECEIVING,HANDLINGAND STORAGE
Type B20B / B22B-VR circuit breakers are subjected to complete
factory production tests and inspection before being packed. They
are shipped in packages designed to provide maximum protection to
the equipment during shipment and storage and at the same time to
provide convenient handling. Accessories such as the maintenance
tool are shipped with the breaker (Figure 3-1).
3.1 RECEIVING
Until the breaker is ready to be delivered to the switchgear site for
installation, DO NOT remove it from the shipping 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 handling. Open the containers carefully to
avoid any damage to the contents. Use a nail puller rather than a
crow bar when required.
When opening the containers, 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 detected and notify the nearest Eaton’s Electrical
Services & Systems office.
Tools and Accessories
Maintenance Tool: This tool is used to manually charge the closing
spring. One maintenance handle is provided with each vacuum unit
replacement breaker. (Style# 8064A02G01)
Levering Handle: The levering handle is used to assist in moving
the circuit breaker into and out of the cell. This levering handle is the
same as the one provided with the original Westinghouse breaker
racking mechanism and is therefore not provided as part of the
vacuum replacement breaker.
Secondary Connection Block Extension Cable: The extension
cable can be used to connect the circuit breaker to a test cabinet or
to the switchgear cell’s secondary receptacle block so that the
breaker can be electrically operated while not installed in the
switchgear cell. This extension cable is the same one provided with
the original breaker and is therefore not normally included as part of
the vacuum replacement breaker.
Locking Rods: Two one inch diameter locking rods are provided to
lock the breaker in place when raised to the connect position. The
rods are inserted after the breaker has been lifted into the connect
position and locked in place by rotating the locking bar retainers into
place (Figure 3-3). The process is similar to that used on theoriginal
breaker, except that the new locking rods are longer to accommo-
date the vacuum replacement design and do not have a threaded
portion. The new locking rods are held in place by the locking rod
retainers whose function is to replace that of the original threaded
portion and corresponding thread mating area of the original
breaker.
3.2 HANDLING
DO NOT USEANY LIFTING DEVICE ASAPLATFORM FOR
PERFORMINGMAINTENANCE,REPAIR ORADJUSTMENT OF THE
BREAKERORFOR OPENING, CLOSING THE CONTACTSOR
CHARGING THE SPRINGS. THE BREAKER MAY SLIP OR FALL
CAUSINGSEVERE PERSONALINJURY. ALWAYS PERFORM
MAINTENANCE, REPAIR ANDADJUSTMENTS ONAWORKBENCH
CAPABLEOFSUPPORTING THE BREAKER TYPE.
B20B / B22B-VR breaker shipping containers are designed to be
handled either by use of a rope sling and overhead lifting device or
by a fork lift truck. If containers must be skidded for any distance, it
is preferable to use roller conveyors or individual pipe rollers.
Once a breaker has been inspected for shipping damage, it is best
to return it to its original shipping container until it is ready to be
installed in the Metal-Clad Switchgear.
Figure 3-1 B20B / B22B-VR Tools and Accessories
WARNING
Figure 3-2 Overhead Lifting of B22B-VR