ABB AMVAC User manual

AMVACTM and ADVACTM
Breaker commissioning procedures
Courtesy of NationalSwitchgear.com

1VAL0501-MB – Rev A, Oct. 2015
Courtesy of NationalSwitchgear.com

1VAL0501-MB – Rev A, Oct. 2015
Table of Contents
1Important Safety Notes & Warnings............................................1
1.1 Safety Notations...............................................................................................................1
2Introduction.........................................................................................1
2.1 General Instructions........................................................................................................1
2.2 Scope of Instructions......................................................................................................2
3Inspection, Handling and Storage ................................................2
3.1 Inspection..........................................................................................................................2
3.2 Handling.............................................................................................................................2
3.3 Storage...............................................................................................................................2
4Procedures........................................................................................... 2
4.1 Receiving inspection.......................................................................................................2
4.2 Truck mounting ................................................................................................................3
4.3 Functional Test.................................................................................................................6
4.4 Primary Circuit Test ...........................................................................................................7
4.5 Cell Insertion.....................................................................................................................9
4.6 Racking, DISCONNECT to TEST .................................................................................10
4.7 In Cell Testing.................................................................................................................11
4.8 Racking, TEST to CONNECT........................................................................................11
4.9 Racking, CONNECT to TEST........................................................................................12
4.10 Racking, TEST to DISCONNECT` ................................................................................12
4.11 Removal...........................................................................................................................12
4.12 Standard Color ...............................................................................................................13
4.13 Galvanized Steel Frame Construction .......................................................................13
4.14 Primary Disconnect Assemblies.................................................................................13
4.15 Secondary Disconnecting Devices.............................................................................13
4.16 Ground Bus Contacts....................................................................................................13
524 Month (Two Year) Inspection................................................. 14
6Renewal Parts .................................................................................. 14
7End of life of Product......................................................................15
8Methods of Disposal ....................................................................... 15
9Disclaimer of Warranties and Limitation of Liability ............ 16
10 ADVAC AMVAC Commissioning Checklist 1of 2..................... 17
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Page 1
1Important Safety Notes &
Warnings
Equipment operation depends on proper
handling, installation, and maintenance.
Neglecting fundamental requirements may
lead to injury of personnel, failure of the
equipment and property damage.
Safety as described in this instruction book
involves two conditions:
·Personal injury.
·Product or property damage.
1.1 Safety Notations
Safety notations alert personnel to
possible death, injury or property damage
situations. The safety notations appear
before the step in which the condition
applies. The one safety notice and three
hazard levels notations are:
Personnel installing, operating, or
maintaining this equipment must have
thorough knowledge of all applicable local,
regional, industry, government, and OSHA
safety procedures as well as commonly
accepted safe working practices. Personnel
working in or around this equipment must
also exhibit common sense and good
judgment regarding the potential hazards for
themselves and other personnel in the area.
These instructions are intended for use by
fully qualified personnel and are not a
substitute for adequate training, experience
and supervision.
Should clarification or additional information
be required, refer the matter to your nearest
ABB Sales office.
2Introduction
2.1 General Instructions
Read these instructions carefully before
installation and use as a guide during
installation and initial operation. Use of
these instructions will facilitate proper
receiving of the equipment and prolong its
useful life.
WARNING
“Warning” indicates a hazardous
situation that has some probability of
severe injury and substantial property
damage.
DANGER
“Danger” indicates a hazardous
situation that has a high probability of
death, severe injury, and substantial
property damage.
CAUTION
“Caution” indicates a hazardous
situation that may result in minor or
moderate injury and/or property
damage.
“NOTICE” indicates a
statement of company policy
as it relates to the safety of
personnel or protection of
property
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Page 2
2.2 Scope of Instructions
The instructions are general in nature.
They cover requirements for receiving,
installation, and functional checks as
applied to ADVAC and AMVAC medium
voltage circuit breakers. These instruc-
tions do not attempt to cover all possible
issues that may arise during receiving to
commissioning of breakers.
Information on particular installations
appears in the following:
·Bills of Materials that list electrical
devices and equipment.
·Single line drawings showing power
connections.
·Elementary and schematic
diagrams.
·Connection diagrams
3Inspection, Handling and
Storage
3.1 Inspection
Before shipment, the equipment is
inspected and marked with its rating.
Breakers are shipped in the open and
discharged condition in separate crates.
Upon receipt of the equipment, use the
breaker commissioning check list in the
back of this document to examine the
shipment for damage or missing
components. Follow the procedures
outlined in the next section.
3.2 Handling
Transport breakers upright using proper
lifting equipment. Take the high center of
gravity into account. Carry out loading
operations only when it has been ensured
that all precautionary measures to protect
personnel and materials have been taken
into consideration.
3.3 Storage
For circuit breakers, store upright in their
original shipping carton oriented as
indicated on the shipping crates. See
breaker installation and operation manual
for details on breaker storage.
4Procedures
4.1 Receiving inspection
Inspect shipping crate for damages, and
note condition oftip &tell ifequipped.Check
the contents against the packing list before
discarding any packing material. Check the
consignment for completeness and lack of
any damage (e.g. moisture and its
detrimental effects). In case of doubt, the
packing must be opened and then properly
resealed, when intermediate storage is
necessary. If any quantities are short, or
defects or transport damage is noted, these
must be documented on the respective
shipping document. Notify ABB and the
carrier at once of any discrepancies. If there
is damage from improper handling, file a
claim for damages at once with the carrier
and notify ABB.
Figure 4.1 Rating label
Note: ABB is not responsible for damage, after
delivery of the equipment to the carrier
.
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Page 3
Remove crate by lifting box off of shipping
pallet (Figure 4.2). Remove plastic bag from
breaker if covered. Remove both clamp
screws from pallet (Figure 4.3). Insure that
breaker is in the open and discharged state
by verifying the indictor position on the front
of breaker. Inspect the breaker according to
the breaker check list for damage. It is
recommended that the breaker is
photographed from all sides with the rating
label ledge able.
Figure 4.2 Crated breaker
Figure 4.3 Clamp screws
Note: Always take photographs todocument any
damage, also take a photo of the rating label.
4.2 Truck mounting
WARNING
·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 should be suitably
rated for lifting the circuit breaker
load.
·The lifting hook IS NOT to be used for
insertion of drawout circuit breakers
into switchgear compartments.
·The lifting hook IS NOT to be used as
the sole means of support when
servicing the circuit breaker.
Always insure floor is clear of
debris before lowering breaker
onto floor.
Always be careful of breaker
secondary plugs while moving
breaker on the floor.
Never roll drawout breaker
across uneven surfaces.
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Page 4
1. Remove breaker from shipping
pallet using lifting angles provided
on the back of the module (Figure 4.4).
2. Lower the breaker on to the floor.
With the lift truck platform at ground
level and the foot brake engaged
(Figure 4.7).
Figure 4.7 Lift truck foot brake
3. Push the interlock release handles
(Figure 4.10) on the breaker inward
and roll the breaker onto the lift truck
facing toward the truck (Figure 4.12). It
may be necessary to use the racking
handle to rotate the racking screw
slightly left or right to free up the truck
handles (Figure 4.8).
Lifting hook: Attach one lifting hook to
each side of the circuit breaker’s lifting
angles.
Figure
4
.
4
Lifted breaker
Remove the lifting angles before
inserting breaker in cell.
Do not use Primary pole assemblies to
move or lift breaker.
Breaker secondary plugs
Secondary locking tab
Figure
4
.
5
Lifting angles
Figure
4
.
6
Secondary plugs
P2 P1
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Page 5
4. Roll completely onto the platform
until the breaker locking tabs (Figure
4.9) engage thebreakerinterlock slot.
(Figure 4.11)
Figure 4.10 Truck handle actuation
Note: ADVAC Breaker must be discharged for
truck handles to operate.
Figure 4.12 Breaker on lift truck
The breaker interlock tabs
must engage the slotsin the
lift truck platform before
releasing the foot-brake
and moving the lift truck.
Lower the lift truck platform
before transporting draw-
out modules from upper
positions with the lift-truck.
Racking screw release lever
Racking handle
Figure
4
.
8
Truck racking screw
Interlock release
handle
Breaker locking
tab
Figure
4
.
9
Breaker truck interlock tabs and handles
Figure 4.11 Lift truck platform
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Page 6
4.3 Functional Test
For operation, component identification and
locations refer to the breaker IB provided
with the breaker. ADVAC breakers refer to
IB 1VAL050503-MB, AMVAC breakersrefer
to IB 1VAL050601-MB.
With the circuit breaker either on the floor
or on a suitable work surface. Use the
breaker IB and the commissioning
checklist in the back of this document to
record any deficiencies.
Check breaker truck:
a. Truck handles move inward
with little resistance and
spring back outward (Figure
4.10).
b. Racking screw release lever
moves down with little
resistance and returns up
when released (Figure 4.8).
c. Wheels are parallel with truck
and rotate freely.
Figure 4.13 Truck wheel
Check breaker manual operation:
a. Perform a manual charge
insuring that charge indicator
changes state.
b. Perform a manual close
operation. (ADVAC only) And
insure closed indicator is
shown.
c. Perform a manual open
operation. (ADVAC only) Note
if there are any deficiencies
during the operations.
Check the breaker’s secondary power
requirements listed on the front label and
insure that the breaker is of the correct
control power of the supplying equipment
for the following tests (Figure 4.1).
Apply power to the breaker using a breaker
test cabinet (Figure 4.14) or a Switchgear
umbilical cable.
Note: Plug P1 (Figure 4.6) is toward the
center of breaker.
a. Breaker charges and
indicates “Charged” or
“Ready” in less than 8
seconds.
b. Perform a local Close by
using the Close push button
on breaker.
c. Performa local Open by using
the Open push button on
breaker.
d. Perform a remote Close by
using the Close push button
on the test cabinet or gear.
e. Perform a remote Open by
using the Open push button
on the test cabinet or gear.
f. If breaker is supplied with UV
close the breaker and insure
that the breaker opens when
power is removed.
Figure 4.14 Breaker test cabinet
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Page 7
4.4 PrimaryCircuit Test
The primary circuit of the breaker has been
tested prior to shipment. Retesting prior to
energization will insure no internal
transportation damages have occurred.
Verification of vacuumcan be performed by
a low-frequency AC withstand test.
Additional a contact resistance testl by
performing a contact resistance test is
recommended.
Rated Max
Voltage Dielectric Test Value, 1 Minute
Dry AC rms
New Condition
reference
c37.06
Dielectric Test
Value, 1 Minute
Dry AC rms
Field Condition
reference
c37.20.2
4.76kV 19kV 15kV
8.25kV 36kV 27kV
15kV 36kV 27kV
27kV 60kV 45kV
Figure 4.15 Primary low-frequency withstand test
voltages
To verify the integrity of the vacuum
interrupters perform the following low-
frequency withstand voltage test:
1. Open the breaker (no control power
supplied to breaker)
a. Connect the high potential lead to
one terminal.
b. Ground the remaining 5 terminals
and breaker frame.
2. Start machine with output potential at 0
(zero) VAC
3. Increase the potential to the required
voltage (Figure 4.15)
4. Hold for one minute
5. Decrease potential to 0 (zero) and turn
off machine
6. Repeat for the remaining 5 terminals
A successful withstand indicates
satisfactory vacuum integrity. Remove
power from the breaker.
Contact resistance is measure at the factory
according to the ANSI 37.09 using a 200A
µohm meter. This DC resistance test should
be performed after each fault the primary
circuit, from terminal to terminal of each
pole unit, in the close position shall be
measured with at least 100 A of dc current
flowing in the circuit and shall not exceed
the limit set for the rating of the circuit
breaker by the manufacturer.
Remove lifting angles from breaker.
Note: Breaker will not fully rack in with lifting
angles installed.
CAUTION
High voltage applied across
an open gap in a vacuum can
produce X-radiation. When
the breaker is fully open the
contact spacing is such that
when tested with the voltages
specified, X-radiation at one
meter is below the level of
concern. A danger could
exist at voltages above the
dielectric test voltage or
reduced contact spacing
caused by a major internal
mechanical failure of the
breaker.
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Page 8
Cell Inspection
Before inserting a breaker into
a module, remove foreign
objects, tools and debris, or
obstructions from inside the
module.
Prior to first insertion of breaker into cell, it
is important to inspect the breaker cell
operating components listed in (Figure 4.16).
Figure 4.16 Cell locations
All circuit breakers of like rating are
interchangeable
Circuit breakers have three positions in the
housing.
1. The DISCONNECT position disengages
the main disconnecting devices, and the
control contacts on the breaker. They
are a safe distance from the stationary
part of the device located on the
housings.
2. The TEST position disengages the main
disconnecting devices, and engages the
control contacts. This position allows
operation of the circuit breaker for
testing.
3. The CONNECTED position engages the
main and control disconnecting devices
on the breaker.
Mechanical interlocks prevent moving a
circuit breaker from one position to another
unless the circuit breaker is open. The
interlocks also prevent closing of the
breaker between positions.
DANGER
Insure that allpower to the cellhas been
removed and proper lock-out tag-out
procedures have been performed prior
to cell inspection.
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Page 9
4.5 Cell Insertion
1. With the breaker on the lift truck (Figure
4.12).
2. Open the breaker cell door completely
(Figure 4.16).
3. Raise the lift truck platform by pumping
the foot pedal (Figure 4.17). Release the
foot brakeand push the lift truck towards
the breaker cell.
Figure 4.17 Lift truck foot pedal
4. Align the locking tabs (Figure 4.11) of the
lift-truck with the lift truck holding slots
(Figure 4.18) in the front of the frame.
Adjust the lift-truck to the frame to
engage the locking tabs with the slots.
Adjust the truck platform either by
moving up using lift truck foot pedals or
lowering the platform with the lift truck
control valve (Figure 4.19) to lock the
locking tabs in the lift truck holding slot.
The truck platform should be horizontal
and aligned with the rails in the module.
Try pulling the lift truck away from the
frame. The locking tabs should be set
firmly in place. Set the foot brake.
Figure 4.18 Module interlock slots (left hand shown)
Figure 4.19 Lift truck control valve
5. Release the circuit breaker from the lift
truck by pulling both module interlock
release handles toward the center of the
unit simultaneously (Figure 4.10).
Figure 4.20 Truck locked onto cell
Note: Breaker will not fully rack in with lifting
angles installed.
Lift truck holding slots
M
odule interlock slots
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Page 10
6. Push the circuit breaker straight into the
module. Keep the unit level as possible.
Do not raise or lift the circuit breaker.
7. Align the breaker locking tabs (Figure
4.11) with the module interlock slots
(Figure 4.18).
8. Engage the breaker locking tabs by
returning the handles to their outward
position.
9. Verify that the handles are fully outward
and the breaker locking tabs have
engaged fully into the module interlock
slots.
Note: The unit will not rack into the TEST
position if the Module Interlock Tabs are not
properly engaged with the frame.
10.Disengage the lift-truck by raising the
platform via the foot pedal, release the
foot brake, and move it away from the
frame. The circuit breaker is now in the
DISCONNECTED position ( Figure 4.21).
11.Close and secure the breaker
compartment door.
Figure 4.21 Circuit breaker in DISCONNECT position
4.6 Racking, DISCONNECT to TEST
To rack from the DISCONNECTED position
to the TEST Position: Press down on the
racking release handle on the breaker
compartment door (Figure 4.22).
Figure 4.22 Racking release handle
1. Engage the racking screw on the
breaker with the racking tool and rotate
clockwise (CW).
2. Release the handle and continue to rack
the unit by rotating the racking tool
clockwise until the racking screw stops,
approximately 4 turns. The breaker is
now in the TEST position and will begin
to charge.
3. Verification can be made by confirming
the position indicator on the right side
breaker rail shows TEST (Figure 4.23).
Note: On some ABB Switchgear, the Breaker
“Open” indicating light serves both as the
breaker is “Open” and that the breaker has
reached either the “Test” or “Connect” position
during racking. This is due to the breaker’s TOC
“pin monitor” contact being in series with the
breaker “Open” indicating light circuit. The pin
monitor is only closed when the breaker is in
one of the three racking positions “Disconnect”,
“Test” and “Connect” and the racking pin has
fully seated into position.
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Page 11
Figure 4.23 Circuit breaker position indicator
4.7 In Cell Testing
Functional testing of the breaker should be
performed in the test position prior to
racking breaker into the CONNECTED
position.
1. Insure breaker is charged by the visual
charged flag on the front of the breaker.
If monitoring of breaker READY signal is
being performed, insure breaker READY
signal is active.
2. Perform a close of the breaker using
either or both the manual closing switch
on the gear or associated breaker relay.
Check that the breaker is closed and
appropriate indicating lights are active.
3. Insure breaker charges and returns to
READY status.
4. Perform a open of the breaker using
either or both the manual opening switch
on the gear or associated breaker relay.
Check that the breaker is open and
appropriate indicating lights are active.
Figure 4.24 Circuit breaker in CONNECTED position
4.8 Racking, TEST to CONNECT
To rack from the TEST position to the
CONNECTED position:
5. Press down on the Racking Release
Handle on the breaker compartment
door.
6. Engage the racking screw with the
Racking Tool and rotate clockwise (CW)
approximately 21 turns.
7. Release the handle and continue to rack
the unit by rotating the racking tool
clockwise. A slight increase in
resistance indicates that the unit is
engaging the primary contacts. When
the racking screw stops, the breaker is
now in the CONNECTED position.
8. Verification can be made by confirming
the position indicator on the right side
breaker rail shows CONNECTED (Figure
4.24).
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Page 12
4.9 Racking, CONNECT to TEST
To rack from the CONNECT position to the
TEST position:
1. The breaker must be OPEN before
proceeding to the next step.
2. Press down on the racking release
handle.
3. Engage the racking screw with the
racking tool and rotatecounterclockwise
(CCW). Release the handle and
continue to rotate counterclockwise,
from the CONNECTED position into the
TEST position.
4.10 Racking, TEST to DISCONNECT
To rack from the TEST position to the
DISCONNECTED position:
1. Press down on the racking release
handle.
2. Engage the racking screw with the
racking tool and rotatecounterclockwise
(CCW). Release the handle and
continue rotating counterclockwise, from
the TEST position into the
DISCONNECTED position.
4.11 Removal
Removal from the DISCONNECTED posi-
tion with a lift truck.
1. Open the breaker compartment door.
2. For ADVAC breakers perform a manual
close and open operation to discharge
the stored energy. Note:if equipped with
UV you must disable the UV prior to
discharging the breaker.
3. Align the locking tabs of the lift truck with
the lift truck holding slots in the front of
the frame. Push the lift truck to the
frame to engage the locking tabs with
the compartment. Lower the truck
platform slightly to lock in place. The
truck platform should be horizontal and
aligned with the rails in the
compartment. Set the lift truck foot
brake. Trypullingthelifttruckawayfrom
the frame. The locking tabs should be
set firmly in place and the brake set.
4. Release the circuit breaker from the
compartment by pulling the interlock
release handles toward the center of the
unit.
5. Pull the drawout unit straight onto the lift
truck platform. Keep the unit level as
possible.
6. Align the breaker interlock tabs with the
lift truck slots. Engage the breaker
interlock tabs by returning the handles to
their outward position.
7. Verify that the handles are fully outward
and the breaker interlock tabs are in the
lift truck slots.
WARNING
Do not attempt to remove the breaker
from the circuit breaker compartment
without the required ramp, dolly or lift
truck
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Page 13
8. Raise the lift truck platform to
disengage the lift truck locking tabs,
release the foot brake and pull the lift
truck away from the frame.
The breaker interlock tabs
must engage the slotsin the
lift truck platform before
releasing the foot-brake
and moving the lift truck.
Lower the lift truck platform
before transporting draw-
out modules from upper
positions with the lift-truck.
Standard Construction
4.12 Standard Color
The standard paint color is ANSI #61. This
finish is electro-static powder paint applied
over an iron phosphate coating. This
process achieves a smooth, uniform paint
finish that conforms to all UL requirements.
4.13 Galvanized Steel Frame
Construction
Unpainted parts are made of galvanized
steel. Galvanized steel greatly exceeds the
paint qualifications of ANSI C37.20.2
Section 5.2.8.
4.14 Primary Disconnect Assemblies
Circuit breaker primary disconnects consist
primarily of a circle of fingers compressed
by a garter spring. The springs are outside
the current path. The fingers can be
inspected by withdrawing the unit. The
primary contacts are high pressure, self-
aligning devices. All parts are plated to
reduce electrical resistance.
4.15 Secondary Disconnecting Devices
Circuit breakers have self-aligning
disconnects sized for the required current.
They make contact in the CONNECTED
and TEST positions, without the need for a
test jumper (see Figure 27).
Figure 4.25 Circuit breaker self-aligning secondary’s
4.16 Ground Bus Contacts
The ground bus contacts are under the
circuit breakers. The circuit breakers are
grounded in all positions (see Figure 27).
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Page 14
524 Month (Two Year)
Inspection
In addition to the annualinspection, perform
the following recommended inspection and
maintenance at 24 month (two year)
intervals, or sooner, if required by local
conditions or regulations.
1. Clean the circuit breaker stationary
primary contacts. Refer to Circuit
Breaker Installation Operation and
Maintenance Manual 1VAL050502-MB
for detailed instructions.
2. Inspect secondary wiring bundles for
signs of discoloration because of heat or
chafing. Check for cracked or embrittled
insulation. Replace wire whenever
unsure.
3. Inspect primary insulation system for
accumulated contamination. Clean
insulation with a dry cloth, dry-air,
vacuum, or if necessary with an OSHA
approved solvent.
4. Check the calibration of protective
relays.
5. Follow the recommendations of any
individual device instructions furnished
for maintenance of the device.
6. Contact ABB Service if any abnormality
is experienced.
6Renewal Parts
Order factory original replacement parts
from ABB Inc., Lake Mary, Florida 32746.
Specify quantity, part numbers, description,
and nameplate data of the device requiring
the replacement parts.
For replacement parts, call toll free: 1-
800-929-SWGR.
Outside of USA call: 1-407-732-2000
DANGER
Turn off power ahead of the
switchgear before performing any
inspection or
maintenance operations.
Check incoming line terminals to
verify that the equipment is de-
energized and grounded. Check out-
going terminals to ensure that no
back-feed condition exists.
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Page 15
7End of life of Product
ABB products are manufactured to meet or
exceed the standards of compliance for
quality and environmental management
systems in accordance with ISO 9001 and
ISO 14001. All of these items can be
supplied with a certificate of quality.
8Methods of Disposal
Disposal can be carried out in a manner of
ways depending upon material of product.
Below is the recommended method of
disposal for various raw materials.
The duty of ABB is to facilitate subsequent
recycling or disposal at the end of product
life. During disposal of the product, it is
always necessary to act in accordance with
local legal requirements in force.
RAW MATERIAL RECOMMENDED METHOD OF DISPOSAL
Metal material (Fe, Cu, Al, Ag, Zn, W, ect.) Separation and recycling
Thermoplasts Recycling or disposal
Epoxy resin Separation of metal and disposal of remains
Rubber Disposal
Oil (transformer oil) Draining and recycling or proper disposal
SF6 gas Discharging from equipment
Packing material Recycling or disposal
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Page 16
9Disclaimer of Warranties and Limitation of Liability
DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY
There are no understandings, agreements, representations of warranties, expressed or implied, including warranties
of merchantability or fitness for a particular purpose, other than those specifically set out by an existing contract
between the parties. Any such contract states the entire obligation of the seller. The contents of this document shall
not become part of or modify any prior or existing agreement, commitment or relationship. The information,
recommendations, descriptions and safety notations in this document are based on ABB experience and judgment
with respect to metal-clad and metal-enclosed switchgear. This information should not be considered to be all
inclusive or covering all contingencies.
No warranties, expressed or implied, including warranties of fitness for a particular purpose or merchantability, or
warranties of fitness for a particular purpose or merchantability, or warranties arising from course of dealing or usage
of trade, are made regarding the information, recommendations, descriptions and safety notations contained herein.
In no event will ABB be responsible to the user in contract, in tort (including negligence), strict liability or otherwise
for any special, indirect, incidental or consequential damage or loss whatsoever including but not limited to damage
to or loss of use of equipment, plant or power system, cost of capital, loss of profits or revenue, cost of replacement
power, additional expenses in the use of existing power facilities, or claims against the user by its customers resulting
from the use of information, recommendations, descriptions and safety notations contained herein.
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Page 17
10 ADVAC AMVAC Commissioning Checklist 1of 2
Breaker Information
Company Date
Rating Order #
Serial # Cat #
Receiving Inspection
Storage & Shipping, was breaker properly stored and shipped in accordance with ABB policy
Shipping crate is undamaged - remove crate
Breaker is still secured to pallet - unsecure breaker
Breaker is clean and free of moisture, corrosion and other environmental intrusions
Breaker is undamaged - take photos, note condition in notes section
Breaker rating label matches order, I.E. ratings, expected accessories - Is the order correct?
Breaker indicating flags and push buttons are correct color and labeling - “OPEN” green, “CLOSE” red
Poles have no cracks or large chips
Primary heat sinks coating is unchipped (no bare metal) - if equipped (2000A & 3000A models)
Primary contacts “tulips” are symmetric and complete - straighten by hand
Primary contacts “tulips” greased at contact points - apply if needed
Primary contacts arms are straight and show no obvious miss alignment
Secondary plugs are undamaged and pins are fully seated and visibly straight
Secondary locking tab is straight and undamaged
Truck ground contact is greased - apply if needed
Shutter rollers are clean, straight and undamaged
Truck wheels are parallel with truck sides and rotate freely
Wire harness - not loose or damaged
Components - not loose or missing
Mechanism is greased where required
Functional Test
Breaker interlock release/truck handles operate freely – insure racking pin has dropped into place
Racking screw release lever moves freely – make sure screw is not rotated and binding on pin
Truck wheels are parallel with truck sides and rotate freely
Breaker manually charges – ADVAC only
Breaker manually closes and opens – ADVAC only
Circuit breaker powers up and goes to “Ready” or “Charged” state in less than 8 seconds
Breaker closes and opens locally – use pushbuttons
Breaker closes and opens remotely – use test cabinet or switchgear
Breaker manually opens – AMVAC only, Close breaker remove power use T-Handle if ordered
Breaker indicators change state appropriately - “OPEN”, “CLOSE”, “Charged” or “Ready”
Operational counter operates – record number of operations ________________
Cell Inspection
Modules interlock slots – unbent and rectangular
Ground bar – visually straight and properly mounted
Interface blocking plate – installed with appropriate rating keyed position facing up
Secondary disconnects – locked into place and slides freely when unlocked
Wheel rails – clean and undamaged
Courtesy of NationalSwitchgear.com