Siemens GMI Series User manual

SIEMENS
»
5
kVand
15
kV
Vacuum
Circuit
Breakers
Type
GMI
Instruction
Installation
Operation
Maintenance
SG
-
3268
-
01
»
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Table
of
Contents
12
Dashpot
Assembly
Manual
Spring
Charging
Spring
Charging
Motor
Close Solenoid
,
Trip
Solenoid
and
Anti
-
Pump
Relay
Secondary
Disconnect
Auxiliary
Switch
MOC
(
Mechanism
Operated
Cell
)
Switch
15
TOC
(
Truck
Operated
Cell
)
Switch
Limit
Switches
(
Figure
30
)
Standard
Schematic
and
Wiring Diagrams
.
.
. .
Interlocks
Trip
Free Interlock
Rating
Interlock
Circuit
Breaker Frame
Ground
Disconnect
Circuit
Breaker
Handling
Wheels
Racking
Mechanism
Introduction
and
Safety
Introduction
Safety
Qualified
Person
Signal
Words
Dangerous
Procedures
. . .
Field
Service
Operation
. . .
13
1
13
1
1
13
1
. .
. .
1 4
1
1 4
1
1 6
Receiving
,
Handling
&
Storage
Introduction
Receiving
Procedure
Inspection
Shipping
Damage
Claims
(
When
Applicable
)
Handling
Procedure
Storage
Procedure
Indoor
Storage
Outdoor
Storage
Space
Heating
16
2
.
.
.
.
16
.
.
.
.
18
2
.
2
18
2
19
2
19
2
19
2
19
2
.
.
.
.
20
2
Maintenance
&
Overhaul
Introduction
Recommended Hand Tools
Metric
(
Vacuum
Interrupter
,
Only
)
American
(
All
Other
Breaker Locations
)
.
.
Recommended Annual
Inspections
Removal
from
Switchgear
Checks
of
the
Primary
Power
Path
Cleanliness Check
Inspection
of
Primary
Disconnects
Checks
of
the
Interrupter
Operator
Mechanism
23
Cleaning
and Lubrication
Fastener
Check
Manual
Spring
and
Contact
Erosion
Checks
. . . .
24
Dashpot
Assembly
Check
Electrical
Control Checks
ChecK of
the
Wiring
and Terminals
Check
of
the
Secondary
Disconnect
Automatic
Spring Charging
Check
-
Control
Power
Required
Electrical
Close
and
Trip
Check
-
Control
Power
Required
Checks of
the
Spring Charging
Motor
. .
.
High
-
Potential Tests
Electrical Vacuum
Integrity
Check
High
Potential
Test
Equipment
Vacuum
Integrity
Test
Procedure
As
-
Found
Insulation
Tests
Test
Equipment
As
-
Found Test Procedure
Inspection
and
Cleaning
of
Breaker
Insulation
Functional Tests
Overhaul
and
Component
Replacement
. . .
Installation
Checks
&
Initial Functional Tests
Introduction
Inspections
,
Checks
and Tests
without
Control
Power
De
-
Energizing
Control
Power
in
Switchgear
Mounted
Circuit
Breakers
Spring
Discharge
Check
Removal
from
Lower
Cell
(
Indoor and
Shelter
-
Clad
Outdoor
Switchgear )
. .
.
4
Removal
from
Upper
Cell
(
Indoor and
Shelter
-
Clad
Outdoor
Switchgear )
. . .
4
Removal
from
Upper
and
Lower
Cell
in
Outdoor
Non
-
Walk
In
Enclosures
Physical
Inspections
Manual
Spring
Check
As
-
Found and Vacuum
Check
Tests
Automatic
Spring
Charging
Check
. . . .
Final Mechanical
Inspections
without
Control
Power
.
. . .
7
.
.
.
.
21
3
21
»
21
3
21
21
.
. . .
3
. . . .
3
21
22
22
22
2 3
2 4
5
. . . .
5
2 5
5
2 6
6
2 6
6
.
.
2 6
2 6
Interrupter
/
Operator
Description
Introduction
Vacuum
Interrupters
and
Primary
Disconnects
Primary
Disconnects
Phase Barriers
Stored
Energy
Operating
Mechanism
Modes
of
Operation
Spring
Charging
Mode
Closing
Mode
(
Figure
18
)
Trip
Free Mode
Opening
Mode
Rapid
Auto
-
Reclosing
Mode
Closing
and
Tripping
Springs
Trip
Free
Operation
8
27
.
8
27
..
. .
9
27
9
27
. . .
9
28
10
28
10
28
.
1 1
28
11
28
. .
1 1
»
29
. .
12
29
.
12
.
30
12
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Table
of
Contents
Replacement
of
Spring
Charging
Motor
(
Device
88
)
Replacement
of
Primary
Disconnect
Fingers
33
Replacement
of
Vacuum
Interrupters
Vacuum
Interrupter
Removal
Vacuum
Interrupter
Replacement
....
Circuit
Breaker
Overhaul
Replacement
at
Overhaul
Replacement
of
Closing
Springs
Replacement
of
the
Opening
Spring
Replacement
of
Closing
and
Tripping
Solenoids
(
Devices
52
SRC
and
52
T
)
Replacement
of
Anti
-
Pump
Relay
(
Device
52
Y
)
Replacement
of
the
Auxiliary
Switch
Replacement
of
Motor
Cut
-
Off
Switch
(
Device
LS
1
)
and
Spring
Charged
Reset
Switch
(
LS
2
)
32
Replacement
of
Trip
Latch
Reset
Check
Switch
(
Device
LS
3
)
Replacement
of
Racking
Position
Switch
(
Device
LS
4
)
(
Figure
59
)
Replacement
of
Dashpot
Assembly
.
..
.
30
.
33
30
30
33
..
.
30
.
34
36
31
31
Annual
inspection
Tasks
.
37
32
Troubleshooting
.
38
Appendix
Table
A
-
1
.
Type
GMI
Circuit
Breaker
Ratings
41
Table
A
-
2
.
5
kV
,
7.2
kV
and
15
kV
Type
GMI
Circuit
Breaker
Control
Data
Table
A
-
3
.
Interrupting
Capacity
Auxiliary
Switch
Contacts
.
32
.
.
.
33
42
33
42
<
4
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Introduction
and
Safety
Page
1
Warning
—
Indicates
death
,
severe
personal
injury
or
major
property
damage
can
result
if
proper
precautions
are
not
taken
Caution
—
Indicates
some
personal
injury
or
property
damage
may
result
if
proper
precautions
are
not
taken
.
Introduction
The
GW
I
family
of
vacuum
circuit
breakers
is
designed
to
meet
all
the
applicable
ANSI
,
NEMA
and
IEEE
standards
.
Successful
application
and
operation
of
this
equipment
depends
as
much
upon
proper
installation
and
main
-
tenance
by
the
user
as
it
does
upon
the
careful
design
and
fabrication
by
Siemens
.
The
purpose
of
this
Instruction
Manual
is
to
assist
the
user
in
developing
safe
and
efficient
procedures
for
the
installa
-
tion
,
maintenance
and
use
of
the
equipment
.
Contact
the
nearest
Siemens
representative
if
any
additional
information
is
desired
.
^
DANGER
Power
circuit
breakers
operate
at
high
voltages
and
have
spring
-
loaded
mechanical
parts
which
operate
at
high
speed
.
When
operated
improper
-
ly
,
this
equipment
will
cause
death
,
personal
injury
and
property
damage
.
Safety
This
equipment
contains
hazardous
voltages
,
and
remotely
controlled
mechanical
parts
which
move
at
high
speed
.
Severe
personal
injury
or
property
damage
can
result
if
safety
instructions
are
not
followed
.
Only
qualified
personnel
should
work
on
or
near
this
equip
-
ment
after
becoming
familiar
with
all
warnings
,
safety
notices
and
maintenance
procedures
described
in
the
manuals
covering
this
equipment
.
To
avoid
electrical
shock
,
burns
and
en
-
tanglement
in
moving
parts
tms
equip
-
ment
must
be
installed
,
operated
and
maintained
only
by
qualified
persons
thoroughly
familiar
with
the
equipment
,
instruction
manuals
and
drawings
.
»
Dangerous
Procedures
Qualified
Person
In
addition
to
other
procedures
described
in
this
manual
as
dangerous
,
user
personnel
must
adhere
to
the
following
:
1
.
Always
work
on
a
de
-
energized
breaker
.
Always
de
-
energize
a
breaker
,
and
remove
it
from
the
metal
-
clad
switchgear
before
performing
any
tests
,
maintenance
or
repair
.
2
.
Always
perform
maintenance
on
the
breaker
after
the
spring
-
charged
mechanisms
are
discharged
(
except
for
tests
of
the
charging
mechanisms
)
.
3
.
Always
let
an
interlock
device
or
safety
mechanism
per
-
form
its
function
without
forcing
or
defeating
the
device
.
A
‘
‘
Qualified
Person
struction
and
operation
of
this
equipment
.
In
addition
,
this
person
has
the
following
qualifications
:
•
Training
and
authorization
to
energize
,
de
-
ener
-
gize
,
clear
,
ground
and
tag
circuits
and
equipment
in
accordance
with
established
safety
practices
.
•
Training
in
the
proper
care
and
use
of
protective
equipment
such
as
rubber
gloves
,
hard
hat
,
safety
glasses
,
face
shields
,
flash
clothing
,
etc
.
,
in
accord
-
ance
with
established
safety
procedures
.
is
familiar
with
the
installation
,
con
-
Signal
Words
The
signal
words
"
Danger
"
used
in
this
manual
indicate
the
degree
of
hazard
that
may
be
encountered
by
the
user
.
These
words
are
defined
as
:
Danger
—
Indicates
death
,
severe
personal
injury
or
major
property
damage
will
result
if
proper
precautions
are
not
taken
.
Warning
"
and
"
Caution
"
Field
Service
Operation
Siemens
can
provide
competent
,
well
-
trained
Field
Service
Representatives
to
provide
technical
guidance
and
advisory
assistance
for
the
installation
,
overhaul
,
repair
and
main
-
tenance
of
Siemens
equipment
,
processes
and
systems
.
Contact
regional
service
centers
,
sales
offices
or
the
factory
for
details
.
»
Courtesy of NationalSwitchgear.com

Receiving
,
Handling
&
Storage
Page
2
3
Each
circuit
breaker
should
be
appropriately
lifted
to
avoid
crushing
the
side
panels
of
the
breaker
,
or
damage
to
primary
disconnect
subassemblies
.
Introduction
Type
GMI
Vacuum
Interrupter
Circuit
Breakers
are
normally
installed
in
assembled
metal
-
clad
switchgear
,
and
the
Switchgear
Manual
contains
the
Receiving
,
Handling
and
Storage
instructions
for
assembled
metal
clad
switchgear
.
This
manual
covers
the
Receiving
,
Handling
and
Storage
instructions
for
Type
GMI
circuit
breakers
shipped
separate
-
ly
from
the
switchgear
.
This
section
of
the
manual
is
intended
to
help
the
user
identify
,
inspect
and
protect
the
circuit
breaker
prior
to
its
installation
.
Type
GMI
circuit
breakers
weigh
between
385
to
575
pounds
(
175
to
261
kg
)
.
See
Table
A
-
1
,
Technical
Data
in
Appendix
.
^
WARNING
h
Obtain
the
services
of
a
qualified
rigger
prior
to
hoisting
the
circuit
breaker
to
as
-
sure
adequate
safety
margins
in
the
hoist
-
ing
equipment
and
procedures
to
avoid
damage
.
Receiving
Procedure
Inspection
Make
a
physical
inspection
of
the
shipping
container
before
removing
or
unpacking
the
circuit
breaker
.
Check
for
ship
-
ment
damage
or
indications
of
rough
handling
by
the
car
-
rier
.
Check
each
item
against
the
manifest
to
identify
any
shortages
.
Some
accessories
such
as
the
manual
charging
lever
,
the
racking
crank
and
the
plug
jumper
are
shipped
separately
.
Shipping
Damage
Claims
(
When
Applicable
)
Follow
normal
shipment
damage
procedures
,
which
should
include
:
1
.
Check
for
visible
damage
upon
arrival
.
2
.
Visible
damage
must
be
noted
on
delivery
receipt
,
and
acknowledged
with
driver
'
s
signature
.
Notation
,
“
Pos
-
sible
internal
damage
,
subject
to
inspection
”
must
be
on
delivery
receipt
3
.
Notify
Siemens
Sales
office
immediately
of
any
shipment
damage
.
4
.
Arrange
for
carrier
’
s
inspection
.
Do
not
move
the
unit
from
its
unloading
point
.
%
4
The
palleted
circuit
breaker
can
also
be
moved
using
a
properly
rated
fork
-
lift
vehicle
.
The
pallets
are
designed
for
movement
by
a
standard
fork
-
lift
vehicle
.
Storage
Procedure
1
,
Whenever
possible
,
install
circuit
breakers
in
their
as
-
signed
switchgear
enclosures
for
storage
.
Follow
in
-
structions
contained
in
the
Switchgear
manual
.
2
When
the
breaker
will
be
placed
on
its
pallet
for
storage
,
be
sure
the
unit
is
securely
bolted
to
the
pallet
and
covered
with
polyethylene
film
at
least
10
mils
thick
.
Indoor
Storage
Whenever
possible
,
store
the
circuit
breaker
indoors
.
The
storage
environment
must
be
clean
,
dry
and
free
of
such
items
as
construction
dust
,
corrosive
atmosphere
,
mechani
-
cal
abuse
and
rapid
temperature
variations
.
Outdoor
Storage
Outdoor
storage
is
not
recommended
When
no
other
op
-
tion
is
available
,
the
circuit
breaker
must
be
completely
covered
and
protected
from
ram
,
snow
,
dirt
and
all
other
contaminants
.
Space
Heating
Space
heating
must
be
used
for
both
indoor
and
outdoor
storage
to
prevent
condensation
and
corrosion
.
When
stored
outdoors
,
between
150
to
200
watts
per
breaker
of
space
heating
is
recommended
.
Handling
Procedure
1
.
Carefully
remove
the
shipping
carton
from
the
circuit
breaker
.
Keep
the
shipping
pallet
for
later
use
if
the
breaker
is
to
be
stored
prior
to
its
installation
.
2
.
Inspect
for
concealed
damage
.
Notification
to
carrier
must
take
place
within
15
days
to
assure
prompt
resolu
-
tion
of
claims
.
i
Courtesy of NationalSwitchgear.com

Installation
Checks
&
Initial
Functional Tests
Page
3
The control
power
disconnect
device
is located
on
the
device
panel
above
the lower circuit
breaker and below
the
upper
circuit breaker
.
Figure
1
shows
a
pullout
type
fuse
holder
.
Removal
of
the
fuse
holder
de
-
energizes
control
power
to
the circuit breaker
in
the
respective
switchgear
cell
.
In
some
switchgear
assemblies
,
a
molded
case
circuit
breaker
is
used
in
lieu
of
the
pull
out
type
fuse
holder
.
Opening
this circuit breaker
accomplishes
the
same
result
:
control
power
is disconnected
.
Spring
Discharge
Check
Perform
the
Spring
Discharge
Check
before
removing
the
circuit
breaker
from
the
pallet
or
removing
it
from
the
switch
-
gear
.
Introduction
This
section
provides
a
description
of
the
inspections
checks and
tests
to
perform
on
the
circuit breaker
prior
to
operation
in
the
metal
-
clad
switchgear
.
»
Inspections
,
Checks
and
Tests
without
Control
Power
Vacuum
circuit breakers
are
normally
shipped
with
their
primary
contacts
open
and their
springs
discharged
.
How
-
ever
,
it
is
critical
to
first
verify
the
discharged
condition
of
the
spring
-
loaded
mechanisms
after
de
-
energizing
control
power
.
De
-
Energizing
Control
Power
in
Switchgear
Mounted
Circuit
Breakers
When the circuit breaker is
mounted
in
switchgear
,
open
the
control
power
disconnect device
in
the metal
-
clad
switchgear
cubicle
.
Figure
1
shows the
location
of
this
disconnect
in
a
standard
two
-
high switchgear assembly
.
^
DANGER
Hazardous
voltages
and
high
-
speed
mechanical
parts
will
cause
death
or
severe
personal
injury
and
property
damage
.
Read instruction
manuals
,
observe
safety
instructions and
use
qualified
personnel
.
NOTE
All
figures
of
switchgear
in
this
manual show
the
switchgear
front
hinged
panel
in
the
open
position
.
mum
nrm
4
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-
s
Figure
2
.
Standard
Front Panel
of
Circuit
Breaker
.
Figure
1
.
Control
Power Disconnect
.
Courtesy of NationalSwitchgear.com

Installation
Checks
&
Initial
Functional
Tests
Page
4
The
spring discharge
check consists
of
simply
performing
the
following
tasks
in
the order
given
.
This
check
assures
that both the
tripping
and
closing
springs
are
fully
dis
-
charged
.
1
.
Press
red
Trip
pushbutton
.
2
.
Press
green
Close
pushbutton
.
3
.
Again
press
red
Trip
pushbutton
.
4
.
Verify
Spring
Condition
Indicator
shows
CHARGED
”
5
.
Verify
Main
Contact
Status
Indicator shows
“
OPEN
.
”
Removal
from
Lower
Cell
(
Indoor
and
Shel
-
ter
-
Clad
Outdoor
Switchgear
)
After
performing
the
Spring
Discharge
Check
(
with
control
power
de
-
energized
)
,
remove
the
circuit breaker
from
its
switchgear
cubicle
.
1
.
Push the
racking
interlock latch
in
and insert the
racking
crank
on
the
racking
screw
on
the
floor of
the breaker
cell
as
shown
in
Figure
3
2
.
With
constant
pressure
on
the
racking
crank
,
rotate
counterclockwise
until
the
breaker is
Disconnect
posi
-
tion
.
3
.
Move the breaker release
latch
to
the
left
,
breaker
can
then be removed
from
cubicle
.
DIS
-
i i
4
.
The
circuit breaker
is
then
free
to
be
rolled
out
using
the
handles
as
shown
in
Figure
4
.
The
wheels
of
the circuit
breaker
are
virtually
at
floor
level
,
and
one
person
can
easily
handle
the unit
.
Removal
from
Upper
Cell
(
Indoor
and
Shelter
-
Clad
Outdoor
Switchgear
)
Removal
of
the
upper
breaker
in
a
two
-
high
assembly
is
similar
to
removal
of
a
breaker
from
a
lower
cell
,
with
several
additional
steps
.
Figure
5
shows the
two
breaker
extension
rails
that
are
inserted
into the
fixed
rails
within
the
upper
cell
of
two
-
high
switchgear
equipment
.
The
rails
engage
locking
pins
in
the
fixed
rails
to
secure
them
in
position
.
MMMMM
34
!
The
procedure
for
removal
of
an
upper
circuit
breaker is
:
1
.
Insert the
two
upper
support
rails into the
fixed
rails
.
Be
sure
rails
are
properly
secured
in
place
.
(
This
can
be
done
after
Step
3
if
preferred
.
)
2
.
Push
the
racking
interlock
in
and
insert
the
racking
crank
on
the
racking
screw
into the
upper
breaker
in
a manner
similar
to
the
step
shown
in
Figure
3
.
3
.
With
constant
pressure
on
the
racking
crank
,
rotate
counterclockwise
until
the
breaker is
in
the Disconnect
position
.
i
Figure
3
.
Racking
Circuit
Breaker
in
Switchgear
.
Courtesy of NationalSwitchgear.com

Installation
Checks
&
Initial
Functional
Tests
Page
5
The
approved
breaker
lifting
device
should
be
used
for
removal
of
both
lower
and
upper
breakers
in
outdoor
non
-
walk
-
in
enclosures
.
Physical
Inspections
1
.
Verify
that
rating
of
the
circuit
breaker
is
compatible
with
both
the
system
and
the
switchgear
.
2
.
Perform
a
visual
shipping
damage
check
.
Clean
the
breaker
of
all
shipping
dust
,
dirt
and
foreign
material
.
Manual
Spring
Check
1
.
Insert
the
manual
spring
charging
lever
into
the
manual
charge
handle
socket
as
shown
in
Figure
6
.
Operate
the
lever
up
and
down
until
the
spring
condition
indicator
shows
the
closing
spring
is
Charged
.
Figure
5
.
View
of
Upper
Breaker
Extension
Rails
.
^
WARNING
Movement
of
breaker
out
from
disconnect
position
without
extension
rails
can
cause
severe
equipment
damage
and
personal
injury
.
4
.
Move
the
breaker
release
latch
to
the
left
.
The
breaker
is
then
free
to
be
rolled
out
on
the
two
support
rails
using
the
handles
.
5
.
Remove
the
breaker
from
the
two
extension
rails
using
the
approved
Siemens
breaker
lifting
device
.
6
.
Lift
the
two
extension
rails
and
withdraw
them
from
the
switchgear
.
Removal
from
Upper
and
Lower
Cell
in
Out
-
door
Non
-
Walk
In
Enclosures
Because
the
floor
level
in
non
-
walk
-
in
outdoor
enclosures
is
approximately
6
inches
above
grade
(
foundation
)
level
,
the
lower
breaker
in
either
a
one
-
high
or
two
-
high
section
of
switchgear
must
be
removed
using
the
preceding
proce
-
dure
for
upper
breaker
removal
.
Figure
6
.
Manual
Charging
of
Closing
Springs
.
Courtesy of NationalSwitchgear.com

Installation
Checks
&
Initial
Functional
Tests
Page
6
6
.
De
-
energize
control
power
by
repeating
Step
1
.
Discon
-
nect
the
plug
jumper
from
the
switchgear
first
and
next
from
the
circuit
breaker
.
2
.
Repeat
the
Spring
Discharge
Check
.
3
.
Verify
that
the
springs
are
discharged
and
the
breaker
primary
contacts
are
open
by
indicator
positions
.
As
-
Found
and
Vacuum
Check
Tests
Perform
and
record
the
results
of
both
the
As
-
Found
insula
-
tion
test
and
the
vacuum
check
high
-
potential
test
.
Proce
-
dures
for
these
tests
are
described
in
the
Maintenance
and
Overhaul
Section
of
this
manual
.
Automatic
Spring
Charging
Check
NOTE
A
temporary
source
of
control
power
and
test
leads
may
be
required
if
the
control
power
source
has
not
been
connected
to
the
switchgear
.
When
con
-
trol
power
is
connected
to
the
GMI
circuit
breaker
,
the
closing
springs
should
automatically
charge
.
Figure
7
.
Connecting
Split
Plug
Jumper
to
Circuit
Breaker
.
The
automatic
spring
charging
features
of
the
circuit
breaker
must
be
checked
.
Control
power
is
required
for
automatic
spring
charging
to
take
place
.
1
.
Open
control
power
circuit
by
removing
pullout
fuse
holder
shown
in
Figure
1
.
2
.
Install
breaker
end
of
split
plug
jumper
(
if
furnished
)
shown
in
Figure
7
to
the
circuit
breaker
.
The
plug
jumper
is
secured
by
means
of
screws
,
over
the
circuit
breaker
’
s
secondary
contacts
.
3
.
Install
the
switchgear
end
of
the
plug
jumper
shown
in
Figure
8
to
the
secondary
disconnect
block
inside
the
switchgear
cubicle
.
The
plug
jumper
slides
into
place
.
The
plug
jumper
interconnects
all
control
power
and
signal
leads
(
e
.
g
.
,
remote
trip
and
close
contacts
)
be
-
tween
the
switchgear
and
the
circuit
breaker
.
4
.
Energize
(
close
)
the
control
power
secondary
discon
-
nect
(
Figure
1
)
.
5
.
Use
the
Close
and
Trip
controls
(
See
Figure
2
)
to
first
Close
and
the
Open
the
circuit
breaker
contacts
.
Verify
contact
positions
visually
.
4
Figure
8
.
Connecting
Split
Plug
Jumper
to
Switchgear
.
Courtesy of NationalSwitchgear.com

Installation
Checks
&
Initial
Functional
Tests
Page
7
7
.
Perform
the
Spring
Discharge
Check
again
.
Verify
that
the
closing
springs
are
discharged
and
the
primary
contacts
of
the
GMI
circuit
breaker
are
open
.
Final
Mechanical
Inspections
without
Control
Power
1
.
Make
a
final
mechanical
inspection
of
the
circuit
breaker
.
Verify
that
the
contacts
are
in
the
Open
position
,
and
the
closing
springs
are
Discharged
.
2
.
Check
the
upper
and
lower
primary
studs
and
contact
fingers
shown
in
Figure
9
.
Verify
mechanical
condition
of
finger
springs
and
the
disconnect
studs
.
3
.
Coat
movable
primary
contact
fingers
,
Figure
9
,
and
the
secondary
disconnect
contacts
,
Figure
24
,
with
a
light
film
of
Siemens
Contact
Lubricant
No
.
15
-
171
-
370
-
002
.
4
.
The
GMI
vacuum
circuit
breaker
is
ready
for
installation
into
its
assigned
cubicle
of
the
metal
-
clad
switchgear
.
Refer
to
removal
procedures
and
re
-
install
the
circuit
breaker
into
its
switchgear
.
5
.
Refer
to
Switchgear
Instructions
for
functional
tests
of
an
installed
circuit
breaker
.
I
Figure
9
.
Primary
Disconnect
Studs
and
Contact
Fingers
.
Courtesy of NationalSwitchgear.com