ABB ADVAC User manual

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013 1
ADVAC™
Medium Voltage Vacuum Circuit Breaker
Installation and Operation Manual

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
2

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013 3
TABLE OF CONTENTS
FORWARD .................................................................................................................................................................3
INTRODUCTION & SAFE PRACTICES ....................................................................................................................4
RECEIVING, HANDLING, & STORAGE ...................................................................................................................5
ACCESSORIES..........................................................................................................................................................6
Lifting Hook....................................................................................................................................................6
Racking Handle ............................................................................................................................................7
INSERTION AND REMOVAL ....................................................................................................................................7
Racking.................................................................................................................................................... 8-11
MECHANISM AND OPERATION ............................................................................................................................12
Description of El Mechanism Twin and Single............................................................................................13
Description of EL Operation .................................................................................................................. 14-16
Interlocks .....................................................................................................................................................17
Manual Operation........................................................................................................................................18
Electrical Operation .....................................................................................................................................19
Control Scheme..................................................................................................................................... 20-21
MAINTENANCE ................................................................................................................................................. 22-29
Mechanism ............................................................................................................................................ 23-26
Truck............................................................................................................................................................27
Control Wiring..............................................................................................................................................28
Primary Circuit.............................................................................................................................................29
APPENDICES ..........................................................................................................................................................30
Appendix A: Basic Breaker Layout..............................................................................................................30
Appendix B: Basic Breaker Dimensions and Weights.......................................................................... 31-39
Appendix D: Wiring Diagrams .............................................................................................................. 41-45
Appendix E: Charging Motor and Coil data.......................................................................................... 31-39
Appendix F: Aux Contacts Rating...............................................................................................................40
Appendix G: Operating Environment.................................................................................................... 41-45
PRODUCT QUALITY AND ENVIROMENTAL PROTECTION................................................................................50

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
4
FORWARD
This booklet provides information for the Medium Voltage (5kV to 27kV) AMVACTM indoor circuit breakers as described
below. Note: not all sections of this bulletin appllies to all the types of AMVACTM circuit breakers. For example, the
racking and interlock sections only apply to the draw-out (removable) versions and do not apply to the fixed-mount
breaker styles. Also sections on the ED2 board contains all options available on the board but may not be utilized de-
pending upon options ordered. All information in this booklet was current at the time of printing. All references in this
booklet are determined from viewing the circuit breaker from the front.
DRAWOUT (REMOVEABLE):
A drawout circuit breaker is a breaker that may be removed from a cell without the unbolting of any connections or
mounting supports. It utilizes specific interlock devices that function according to ANSI standards, which allow for the
safe removal of the device with minimal risk to personnel. It is intended for use in SafeGear®, ADVANCETM, or
abbreviated versions of ABB and OEM switchgear. It also contains plug-in primary and secondary disconnects with
three physical ANSI operating positions within the cell: Disconnect, Test, and Connected. In the disconnected position
there are no electrical connections. In the test position only, the secondary control wiring is connected via a patented
disconnect mechanism which allows for remote testing of the breaker operations. The connected position, both primary
and secondary circuits are connected and the breaker is ready for normal operation.
FIXED-MOUNT:
A Fixed-mount circuit breaker is intended to be mounted as a stationary device. It does not contain any racking related
interlocks and/or primary leads. Primary connections are hard bussed to the associated gear in which the breaker is
installed by the consumer. Secondary wiring is terminated on a 5 foot length of wire from the module to secondary
plugs that are the same as the draw-out versions. Plugs and associated pins can be purchased for plug in connection
or the wires may be cut to provide direct connections. The fixed mount version must be provided with the plugs in this
manner to meet UL listing and to insure proper testing of the breaker. The customer is responsible for any damage to
the breaker that is due to mis-wiring of the breaker.

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013 5
INTRODUCTION & SAFE PRACTICES
INTRODUCTION:
The purpose of this manual is to provide instructions for unpacking, storage, installation, operation and maintenance for
the ADVAC™ vacuum circuit breakers. This manual should be carefully read and used as a guide during installation,
initial operation, and maintenance.
The specific ratings of each model circuit breaker are listed on the individual nameplates. The ADVAC™ breakers are
protective devices. As such, they are maximum rated devices. Therefore, they should not under any circumstances be
applied outside of their nameplate ratings.
SAFE PRACTICES:
ADVAC™ circuit breakers are equipped with high energy/high speed mechanisms. The design includes several
interlocks and safety features which help ensure safe and proper operating sequences. To ensure safety of personnel
associated with installation, operation and maintenance of these breakers, the following recommendations must be
followed:
Only qualified persons, as defined in the National Electric Safety Code, who are familiar with the installation and
maintenance 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.
DO NOT work on an energized breaker.
DO NOT work on a breaker unless all components are disconnected by means of a visible break and securely grounded.
DO NOT work on a breaker with power supplied to the secondary control circuit.
DO NOT defeat safety interlocks. This may result in bodily injury, death and/or equipment damage.
DO NOT work on a closed breaker.
DO NOT work on a breaker with a charged closing spring.
DO NOT use a circuit breaker by itself as the sole means of isolating a high voltage circuit.
DO NOT leave a breaker in an intermediate position in a cell. Always place the breaker in the disconnect, test or
connected position.
THE CIRCUIT BREAKERS DESCRIBED IN THIS BOOK ARE DESIGNED AND TESTED TO OPERATE WITHIN
THEIR NAMEPLATE RATINGS. OPERATION OUTSIDE OF THESE RATINGS MAY CAUSE EQUIPMENT TO
FAIL, RESULTING IN PROPERTY DAMAGE, BODILY INJURY AND/OR DEATH.
ALL SAFETY CODES, SAFETY STANDARDS AND/OR REGULATIONS AS THEY MAY BE APPLIED TO THIS
TYPE OF EQUIPMENT MUST BE ADHERED TO STRICTLY.
WARNING
NOTICE
FAILURE TO OBSERVE THE REQUIREMENTS OF OSHA STANDARD 1910.269 CAN CAUSE DEATH OR
SEVERE BURNS AND DISFIGUREMENT. THIS STANDARD SPECIFICALLY PROHIBITS THE WEARING OF
POLYESTER, ACETATE, NYLON, OR RAYON CLOTHING BY EMPLOYEES WORKING WITH EXPOSURE TO
ELECTRIC ARCS OR FLAMES.

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
6
RECEIVING, HANDLING, AND STORAGE
ADVAC™ circuit breakers are subject to complete factory production tests and inspection prior to packaging and
shipment. The shipping package is designed to provide reasonable protection during shipment and to provide
convenient handling. Accessories such as charging handles and racking handles are shipped separately from the circuit
breaker.
RECEIVING:
Immediately upon receipt of the circuit breakers, examine the cartons to determine if any damage or loss was sustained
during transit. If damage or indication of rough handling is evident, file a damage claim at once with the carrier and
promptly notify the nearest District Office. ABB is not responsible for damage of goods after delivery to the carrier.
However, ABB will lend assistance if notified of claims. Use care in unpacking to avoid damaging any circuit breaker
parts.
Unpack circuit breakers as soon as possible after receipt. If unpacking is delayed, difficulty may be experienced in
making a claim for damages not evident upon receipt. Check the contents of each carton against the packing list before
discarding any packing material. If any discrepancy is discovered, promptly notify the nearest District Office. Information
specifying the purchase order number, carton number and part numbers of damaged or missing parts should accompany
the claim.
HANDLING:
ADVAC™ circuit breaker shipping containers are designed to be handled by a fork lift.
Once removed from the shipping container, the circuit breaker wheels are designed to move the breaker across a
smooth, paved surface.
Care must be taken not to damage the secondary locking tab (item 6, page Fig.5) when transporting, rolling, or handling
the ADVAC™ breakers.
DO NOT pull the circuit breaker truck by the front handles with the breaker in any position other than full disconnect.
Handles lock in place when breaker is racked in.
STORAGE:
Circuit breakers should be installed in their permanent location as soon as possible. If the breakers are not placed in
service for some time, it is advisable to provide adequate means of environmental protection. This may be done by
keeping the breaker in its original shipping container and storing in a warm, dry and uncontaminated atmosphere. The
breakers should be stored to minimize condensation. Moisture can cause deterioration of metal parts and high voltage
insulation.
Prior to storage of the breaker, verification should be made that the breaker is free from shipping damage and is in
satisfactory operating condition.
RECEIVING, HANDLING, AND STORAGE
CAUTION
Do not stack crated breakers more than 3 high .
Containers will collapse causing damage to breakers!

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013 7
CAUTION
 Always follow safe work practices when lifting the circuit breakers to protect the safety of personnel and
equipment.
 Always inspect lifting hook for signs of wear or damage before use.
 Do not use a lifting hook that is damaged or worn.
 The lifting device (i.e. hoist, wench) should be suitably rated for lifting the circuit breaker load.
LIFTING HOOK:
The lifting hook is specifically designed for general lifting and lowering of the Vacuum circuit breaker, from shipping
pallets or for lifting onto and off of work tables. The lifting hook is not designed to be used for insertion or removal of the
circuit breaker from the switchgear compartment, instead, the use of an appropriate lift truck is required or serious dam-
age to the breaker may occur.
ACCESSORIES
Chain hook:
Attach one lifting hook to each side of the circuit breaker
on lifting hook angle.
NOTE: Lifting angles must be removed before breaker is
inserted into switchgear compartment.
Figure 6: Lifting Hook Detail
RACKING HANDLE:
The racking handle is designed to easily adjust the breaker
into and out of a switchgear enclosure. It is also used to
change the position of the device from the Disconnect,
Test, and Connect positions. Press down on the release
lever (2) and rotate racking handle (2) clockwise to rack in
(toward Connect) and counter clockwise to rack out (from
Connect).
Figure 7: Racking Handle
2
1

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
8
Remove the lifting
angle before inserting
breaker in cell
DO NOT use Embed-
ded pole assemblies
to move or lift breaker
INSERTION AND REMOVAL
INSERTION AND REMOVAL
This section describes the necessary steps for inserting and removing a circuit breaker to and from the switchgear’s “Disconnect”
position. Racking the circuit breaker to and from Disconnect, Test and Connected positions is covered in the next section. The fol-
lowing rules should always be observed when inserting a circuit breaker into the switchgear compartment.
 NOTE ABB has specific accessories to be used with ABB breakers.
 ALWAYS compare the breaker ratings nameplate with the switchgear ratings nameplate. Verify breaker secondary
control voltage ratings are in agreement with the switchgear control voltage ratings.
 ALWAYS make sure lifting angles (see photo below) are removed prior to inserting breaker into cell.
 DO NOT attempt to insert the circuit breaker prior to a complete inspection of both breaker and switchgear compart-
ment. Breaker and compartment must be free of tools, obstructions or foreign objects.
 DO NOT attempt to insert or rack a closed circuit breaker.
 DO NOT force a breaker into or out of the cell.
 DO NOT remove or rotate interference blocking plate in switchgear compartment. Interference plate prevents im-
proper rating circuit breaker from being inserted into switchgear compartment.
Do not attempt to remove the breaker from the circuit breaker compartment without the
required ramp, dolly or lift truck. Refer to the specific switchgear Installation and Maintenance
manual for details.
WARNING

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013 9
INSERTION AND REMOVAL
INSERTION: (Refer to [Figure 1] for compartment detail, [Appendix A] for breaker detail)
1. Open switchgear breaker compartment door [H] to its fully opened position.
2. Align lift truck left & right platform guides with switchgear latch openings.
3. Raise platform for easy insertion of platform guides, then lower lift truck until platform guides are fully engaged and
hooked into switchgear compartment cell.
4. Pull back on lift truck to insure platform is fully engaged & level.
5. Grasp lower truck handles [10] on both sides of breaker and pull handles inward to unlatch the breaker from the lift
truck platform.
6. Push breaker into breaker compartment, pulling handles inward before front of breaker truck reaches front of switch-
gear frame or damage to cell interlock tabs [11] will occur. Interlocks may prevent or restrict insertion (Refer to Page
11 [Interlocks]).
7. Align cell interlock tabs with breaker compartment slots and push handles out to fully engage tabs into slots (breaker
truck will be flush with switchgear frame).
REMOVAL:(Refer to [Figure 1] for compartment detail, [Appendix A] for breaker detail)
1. Confirm (through window) that breaker has been opened and racked to the disconnect position.
2. Open switchgear breaker compartment door to its fully opened position.
3. Insure breaker is discharged by pressing the close then open button sequentially.
4. Align lift truck left & right platform guides with switchgear latch openings.
5. Raise platform for easy insertion of platform guides, then lower lift truck until platform guides are fully engaged and
hooked into switchgear compartment cell.
6. Pull back on lift truck to insure platform is fully engaged & level.
7. Grasp lower truck handles [10] on both sides of breaker and pull handles inward to unlatch the breaker from the
switchgear frame.
8. Pull breaker from compartment onto lift platform insuring cell interlock tabs [11] are engaged into the platform slots
and breaker truck handles are fully extended.
CAUTION
Use of any other racking device not approved by ABB will void the warranty!!
Approved device shown

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
10
RACKING:
ADVAC™ circuit breakers are designed with three positive racking positions. The Disconnect position allows only
manual operation of the breaker without control power and with the shutters closed. The Test Position allows manual
and electrical operation of the breaker with control power supplied through the secondary contacts with the shutters
closed. As the breaker approaches the Connected position, an increase in racking force is required to lift the shutters
and to engage the primary contacts. In the Connected position, the primary disconnects are fully engaged with the
shutters open, electrical operation of the breaker through the secondary contacts remains enabled.
1. Engage Racking Handle onto Racking Screw (7)
2. Actuate Position Release Lever (9) to begin racking breaker.
TEST THROUGH CONNECT: (Refer to Appendix A and Fig. 1)
1. Perform visual inspection of the Circuit Breaker:
a. Verify Close/Open Indicator shows OPEN
b. Verify Charged/Discharged Indicator shows CHARGED
c. Verify switchgear door is CLOSED.
2. Actuate (push down) Position Release Lever (9) to begin racking from Test position:
a. Begin racking in the CLOCKWISE direction
b. Release Position Release Lever once racking has begun (after approx. 1/2 turn)
c. Approximately 21 revolutions (210mm) will move the breaker between the Test and Connect positions
The Connect Position is indicated by a positive lock, preventing further racking shaft rotation.
Closing of the breaker is prevented between Test and Connect positions
3. Once the Breaker is Fully in the connect position, and the positive lock position has been established, It is recom-
mended that the racking screw be turned in the counterclockwise direction to release the pressure on the locking
DISCONNECT THROUGH TEST:(Refer to Appendix A and Fig. 1)
1. Perform visual inspection of the Circuit Breaker:
a. Verify Close/Open Indicator shows OPEN
b. Verify Charged/Discharged Indicator shows DISCHARGED
c. Breaker is prevented from closing by a mechanical interlock in the truck .
d. Verify switchgear door is CLOSED.
2. Actuate (push down) Position Release Lever (9) to begin racking from Disconnect position
a. Begin racking in the CLOCKWISE direction
b. Release Position Release Lever once racking has begun (after Approx. 1/2 turn)
c. Approximately four (4) revolutions (40mm) will move the breaker from the Disconnect to the Test position
The Test Position is indicated by a positive lock, preventing further racking shaft rotation.
Closing of the breaker is prevented between Disconnect and Test positions
Control power is available in the Test Position; shutters remain closed.
CONNECT THROUGH TEST: (Refer to Appendix A and Fig. 1)
1. Perform visual inspection Circuit Breaker:
a. Verify Close/Open Indicator shows OPEN
b. Verify switchgear door is CLOSED.
2. Actuate (push down) Position Release Lever (9) to begin racking from Connect position:
a. Begin racking in the COUNTER-CLOCKWISE direction
b. Release Position Release Lever once racking has begun (after 1/2 turn)
c. Approximately 21 revolutions (210mm) will move the breaker between the Connect and Test positions
The Test Position is indicated by a positive lock, further racking shaft rotation is prevented.
Closing of the breaker is prevented between Connect and Test positions
INSERTION AND REMOVAL

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013 11
TEST →DISCONNECT:
1. Perform visual inspection of the circuit breaker.
a. Verify breaker is OPEN (push open button or initiate external electric trip if CLOSED).
b. Verify switchgear breaker door is closed and secured.
2. Begin racking procedure using approved racking crank.
a. Insert racking crank socket into breaker door access port and rotate until socket slides into position.
b. Hold racking crank with left hand and depress position lever with right hand.
c. Turn racking crank counter-clockwise for a ¼ turn before releasing position lever.
d. Continue racking counter-clockwise (approx. 4 turns) until ”Disconnect” position is reached.
e. A positive stop will be felt and the position release lever will snap into the up position.
f. Relieve tension on the racking pin and mechanical/electrical interlocks by reversing the racking crank slightly.
INSERTION AND REMOVAL
C
# Description
A COMPARTMENT SLOTS
B GROUND BAR
C INTERFERENCE
BLOCKING PLATE
D SECONDARY DISCONNECTS
E WHEEL RAILS
F SHUTTERS
G BREAKER POSITION LABEL
DISCONNECT / TEST / CONNECT
H COMPARTMENT DOOR
Figure 1: Basic Cell
D
E
F
A
B
G
H
DISCONNECT TEST CONNECT
Approximate Distance from
Disconnect 40 MM
4 REVOLUTIONS
1.57 INCHES
250 MM
25 REVOLUTIONS
9.84 INCHES
Manual Operation YES YES NOT RECOMMENDED
Electrical Operation NO YES YES
Control Power Available NO YES YES
Shutter CLOSED CLOSED OPEN
Primary Contacts Engaged NO NO YES
Position Indication POSITIVE LOCK & CELL DECAL POSITIVE LOCK & CELL DECAL POSITIVE LOCK & CELL DECAL
Interlocks INTERFERENCE BLOCKING PREVENTS
INSERTION
RELEASE LEVER
RELEASE LEVER
CLOSING PREVENTED BETWEEN
POSITIONS
CLOSING PREVENTED BETWEEN POSITIONS
RELEASE LEVER
Requirements To Rack
breaker from Position BREAKER OPEN
POSITION RELEASE LEVER ACTUATED BREAKER OPEN POSITION RELEASE LEVER ACTUATED BREAKER OPEN POSITION RELEASE LEVER ACTUATED
Notes:
A. Closed door racking is recommended between ALL positions.
B. The circuit breaker position is also indicated by a decal– see Fig 1. Item G
Table 1: Summary Racking Data

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
12
MECHANISM AND OPERATION
The EL operating mechanism of the Advac circuit breakers (in all versions) is fitted with
a mechanical anti-pumping device which prevents re-closing due to either electrical or
mechanical commands.
Should both the closing command and any one of the opening commands (local or re-
mote) be active at the same time, there would be a continuous succession of opening
and closing operations.
The anti-pumping device avoids this situation, ensuring that each closing operation is
only followed by a single opening operation and that there is no closing operation after
this. To obtain a further closing operation, the closing command must be released and
then re-launched.
Furthermore, the anti-pumping device only allows circuit-breaker closure if the following
conditions are present at the same time:
1. Closing spring fully charged
2. Opening mechanical pushbutton and/or opening release coils (-MO1/-MO2) are not
active.
3. The circuit breaker is in the Open position.
Below is a side internal view of the EL mechanism and the associated anti-pumping component. When the
opening pushbutton or coils are activated the opening shaft lever pushes down on point C of the anti-pump
device. This causes the device to side down slot D in direction of arrow B. Then the trigger portion Amoves
out from between the closing push-button and the closing shaft lever. So if the closing button or signal is
held active and the opening button or signal is then activated. The trigger A will pull out from between clos-
ing shaft lever and the closing push button. Once the open signal is released the trigger Awill come to
rest under the closing push-button and will not return between the closing shaft lever and closing push-
button until the button or closing command is released.
The closing push button is operated by the closing coil (MC) directly by the shaft closing device. This al-
lows the anti-pumping device to prohibit closing by manual or electrical means.

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013 13
SINGLE EL TWIN EL
Spring charged
Switch
S1 (33Lsb)
BB1BB2
BB3 BB8 Opening Pushbutton
Closing Pushbutton
Breaker Open/Closed Indicator
Closing Spring Charge Indicator
Closing Spring Charging Motor (MO)
Manual Charging lever
Operations counter
Open/Closed Auxiliary contacts
Closing Coil (MC)
Opening Coil (MO)
NOT IN
PICTUIRE
OPENING
COIL
(MO2)
NOT IN
PICTUIRE
Under
Voltage
COIL (MU)
Figure 2 Mechanism and Controls
MECHANISM AND OPERATION

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
14
Description of EL Operation
3
2
1
The EL mechanism can be charged manually
using the spring charging lever or electrically by
the spring charging gear motor. While activat-
ing one of the above mentioned methods, the
cams (2) on the rotating operating shaft (1)
move the closing lever assembly (3) to charge
the closing spring.
6
6
5
4
4
A part of the closing spring’s force works on the
closing hook through the closing lever assembly
and the pin of the cam/toggle assembly (4). The
closing hook remains locked by the closing shaft
(5) and the opening hook reaches its position
where it receives the central hook of the cam/
toggle assembly (6). The breaker signals that it
is charged.
MECHANISM AND OPERATION

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013 15
The long levers reach their settled position (6)
once the breaker is closed and are held by the
central hook of the cam/toggle assembly (8).
The contact springs inside the poles and the
opening spring inside the frame are charged.
The contact springs maintain contact pressure
while the breaker is in the closed position.
The central hook applies force to the opening
hook (9) which is locked by the opening shaft
(10).
Activating the closing push button rotates the
closing shaft and releases the closing hook
(1). The stored energy of the closing spring is
transferred to the closing lever assembly (2)
which pushes the long levers of the cam/
toggle assembly connected by a pin (3). The
long levers move the main shaft counter-
clockwise (4) which transfers the motion to the
push rods connected to the contacts in the
vacuum interrupters. The breaker signals that
it is closed
6
8
9
10
Description of EL Operation
MECHANISM AND OPERATION
1
1
2
3
4
5

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
16
The charging motor (if present) automati-
cally rotates the operating mechanism.
The closing spring is now charged again
and ready for the next closing operation.
1
1
2 3
4
Activating the opening push button rotates
the opening shaft and releases the opening
hook (1). This action releases the central
hook of the cam/toggle assembly (2) allow-
ing the contact and opening springs to trans-
fer their energy to the long levers (3). The
main shaft rotates clockwise (4) and the
breaker signals that it is open.
1
Description of EL Operation
MECHANISM AND OPERATION

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013 17
INTERLOCKS:
The ADVAC™ breaker contains a number of interlocks. A description of each interlock follows as encountered during
racking of the breaker into the breaker compartment.
DANGER
MODIFICATION TO INTERLOCKS CAN RESULT IN HAZARDOUS CONDITIONS TO PERSONNEL AND
EQUIPMENT. DO NOT OVERRIDE, BY-PASS OR ADJUST
INTERLOCKS. DO NOT REMOVE OR ROTATE INTERFERENCE BLOCKING PLATE.
CAUTION
THE CLOSING SPRING MAY BE MANUALLY RECHARGED IN THE DISCONNECT AND WITHDRAWN
POSITIONS. VERIFY THAT THE BREAKER IS OPEN AND THE CLOSING SPRING IS DISCHARGED
BEFORE REMOVING THE FRONT COVER.
POSITION INTERLOCKS:The Position Release Lever must be depressed in order to begin racking the breaker in any
direction from any positive position (Disconnect, Test, or Connect). The release lever is blocked from actuation when
the breaker is CLOSED. The ability to close the breaker is blocked unless the breaker is in one of the three positive
positions.
INTERFERENCE BLOCKING:A code plate in the breaker compartment prevents underrated breakers from being inserted
into higher rated compartments. The code plate rating includes continuous current, interrupting current, close and latch
capability and maximum voltage. Breakers with the same or higher code plate rating can be inserted into a compartment
of equal or lower value.
POSITIVE POSITION FOR RACKING:The racking mechanism is blocked unless the interlock tabs are fully extended into the
compartment slots.
POSITIVE POSITION FOR REMOVAL:The handle release pin prevents withdrawing the breaker from the compartment by
blocking withdrawal of the locking tabs. The handle release pin blocks the handles unless the breaker is in the
Disconnect position.
MECHANISM AND OPERATION
CAUTION
THE CLOSING SPRING MUST BE MANUALLY DISCHARGED BEFORE THE BREAKER CAN BE REMOVED
FROM THE CELL. THIS CAN BE ACCOMPLISHED BY CLOSING AND OPENING THE BREAKER WHILE IT
IS IN THE DISCONNECT POSITION.

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
18
MANUAL OPERATION:
The breaker can be operated manually or electrically.
Refer to Basic Breaker Layout [Appendix A] for locations of indicators.
Inspect initial state of the breaker to determine the operations available from Table 2.
a. Closing Spring Charged/Discharged Indicator (6)
b. Close/Open Indicator (4)
Table 2: Operations
2. Pull out the manual Charge Handle (5) from the Front plate (1)
3. Charge the breaker closing spring by up and down motions of the Charge Handle (approximately 5 times)
a. The Closing Spring is completely charged when
Charge handle has free movement
Closing Spring Charged/Discharged Indicator changes to CHARGE
4. Replace Charging Handle into Front Plate
a. The Breaker is ready to perform a Close operation
5. Manually Close the breaker via Close Push Button (2)
a. Breaker Closes
Close/Open Indicator changes to CLOSED
Closing Spring Charged/Discharged Indicator changes to DISCHARGED
b. Breaker ready to perform an Open (O) operation (if O-C-O is desired, see Step 7)
6. Manually open the breaker via Open Push Button (3)
a. Breaker opens
Close/Open Indicator changes to OPEN
Closing Spring Charged/Discharged Indicator remains DISCHARGED
b. No additional operations available, return to Step 3 if additional operation is desired
7. If an Open-Close-Open (O-C-O) operation is desired:
a. Recharge the breaker after step 5 ( Repeat Steps 3,4)
b. Breaker now ready to perform (O-C-O) (Steps 6,5,6)
Closing Spring Charged/Discharged Indicator will remain CHARGED after first Open.
MECHANISM AND OPERATION
Closing Spring Indicator (6) CLOSE/OPEN (4) Operations Available Proceed to Step
Discharged Open None Available 2
Discharged Closed Open 6
Charged Open Close-Open 5
Charged Closed Open-Close-Open 7

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013 19
ELECTRICAL OPERATION:
To operate the breaker electrically, control power must be available. The section entitled Racking describes the
application of control power through the secondary disconnect when the breaker is in the Test and Connect positions.
Optional test jumpers and test cabinets to connect control power to a withdrawn circuit breaker are available (contact the
local ABB sales office for details).
1. Inspect initial state of the breaker to determine the operations available from Table 2 on previous page.
a. Close/Open Indicator
b. Closing Spring Charged/Discharged Indicator
c. Circuit breaker position Test or Connect (or control power applied externally, if withdrawn)
2. Energize Control Power source
a. Charging motor energizes
Charge time approximately 8-10 seconds (at nominal voltage)
Closing Spring Charged/Discharged Indicator shows CHARGED
b. Breaker ready to perform C-O operation
3. Close breaker using manual close push-button or by electrical signal to the rclose coil (after close operation the motor
charges unless control power is removed)
a. Close coil operates
Close/Open Indicator changes to CLOSED
Closing Spring Charged/Discharged Indicator changes to DISCHARGED
Charging motor energizes
Charge time approximately 8-10 seconds (at nominal voltage)
Closing Spring Charged/Discharged Indicator shows CHARGED
b. Breaker ready to perform O-C-O operation
4. Open breaker using manual open push-button or by electrical signal to the open coil
a. Open coil operates and opens breaker
Close/Open Indicator changes to OPEN
Closing Spring Charged/Discharged Indicator remains CHARGED
b. Breaker ready to perform C-O operation
5. Breaker ready to continue operations returning to step 3 above until the source of the control power is deactivated.
Once control power is removed from the charging motor, the Closing Spring will not recharge after a close operation.
MECHANISM AND OPERATION

1VAL050503-MB Rev B Replaces (1VAL057485-MB Rev. C) Oct 2013
20
CONTROL SCHEME:
ADVAC™ circuit breakers are available with two control packages. The standard package (see Appendix D) includes
charge (MS), close (MC), and open (MO) functions, and 4a and 4b auxiliary contacts for customer use. The optional
package (see Appendix D) adds to the standard package 5a and 4b auxiliary contacts for customer use as well as an
optional second open/trip coil (MO2) and/or under voltage (MU) open/trip device if required. Refer to wiring diagrams in
Appendix D and Figure 3 on the next page.
1. Initial State
a. Closing Spring Discharged (33LSb Closed)
b. Breaker Open (52a Open/52b Closed)
2. Upon available control power
a. Secondary engaged
b. Motor charges through 33LSb
3. Closing spring charged
a. 33LSb opens (removing control power to motor)
b. Breaker ready to close
4. Electrical control pulse sent to close Breaker *
a. Current energizes Close Coil (MC) thru the closed blocking switch
Coil energizes releasing closing spring and closes breaker
 –52a closes – 52b opens –33LSb closes
 Motor charges through 33LSb, 33LSb Opens once closing spring is charged
Coil de-energizes with release of signal
5. Electrical control pulse sent to open circuit (note:
  Current energizes 1st Trip/Open (MO1) or 2nd Trip/Open (MO2) or under voltage (MU)
Coil energizes releasing opening spring and opens breaker
 –52a opens – 52b closes
Coil de-energizes with release of signal
Breaker ready to perform O-C-O operation
MECHANISM AND OPERATION
*Note: All open control signals must be zero
and Drawout Breakers’ must be in the test
or connected positions to engage the
Close Blocking switch located on the truck
in order for the Breaker to close.