GE MicroVersaTrip AKR-75 User manual

GEI
-
86151
D
Installation
Instructions
i
Low
Voltage
Power
Circuit
Breakers
Types
AKR
-
75
/
100
»
»
Courtesy of NationalSwitchgear.com

»
Installation
and
Operation
of
Type
AKR
-
75
and
AKR
-
100
Low
-
Voltage
Power
Circuit
Breakers
CONTENTS
SECTION
6
6.0
FUSE
ROLLOUT
ELEMENTS
SECTION
7
7.0
CONNECTIONS
7.1
Primary
Power
7.2
Secondary
Control
SECTION
1
1.0
INTRODUCTION
3
13
14
SECTION
2
2.0
RECEIVING
,
HANDLING
AND
STORAGE
14
14
4
SECTION
8
8.0
OPERATION
8.1
General
8.2
Manual
Closing
8.3
Electrical
Closing
8.4
Tripping
8.5
Current
Rating
For
Auxiliary
Devices
SECTION
3
3.0
INSTALLATION
3.1
Class
1
E
Application
3.2
Location
3.3
Mounting
Types
15
»
4
15
4
15
4
15
4
16
SECTION
4
4.0
STATIONARY
BREAKERS
16
5
SECTION
9
9.0
MAINTENANCE
9.1
Inspection
9.2
Lubrication
9.3
Reference
Publications
17
SECTION
5
5.0
DRAWOUT
BREAKERS
5.1
General
5.2
No
Code
Letter
-
AKD
Switchgear
5.2
.
1
Breaker
Insertion
5.2
.
2
Breaker
Removal
5.3
Code
A
-
AKD
5
/
6
Switchgear
5.3
.
1
Breaker
Insertion
5.3
.
2
Breaker
Removal
5.4
Code
B
-
AKR
Substructure
5.4
.
1
Breaker
Insertion
5.4
.
2
Breaker
Removal
5.5
Code
C
-
AKD
6
Switchgear
5.6
Code
D
-
AKD
8
Switchgear
5.7
Code
F
-
AKR
Substructure
17
5
17
6
17
6
SECTION
10
10.0
INTERCHANGEABILITY
OF
DRAWOUT
BREAKERS
10.1
General
10.2
No
Letter
AKD
Types
10.3
Code
A
Types
10.4
Code
B
Types
10.5
CodeC
Types
10.6
Code
D
Types
10.7
Code
F
Types
10.88
E
-
Type
Rejection
6
7
18
8
19
8
19
8
19
8
19
10
19
11
19
11
19
»
11
19
11
2
Courtesy of NationalSwitchgear.com

SECTION
1
Introduction
i
These
instructions
describe
the installation
and
operation
of
the
AKR
-
75
and
AKR
-
100
frame
size
Low
Voltage
Power
Circuit
Breakers
.
They
cover a
variety
of
models
which
may
differ
in
rating
,
trip
device
and
/
or
mounting
type
as
indicated
in
Table
1
.
Table
1
MOUNTING
TYPE
FRAME
SIZE
(
Amperes
)
BREAKER
WIDTH
(
Inches
)
PRIMARY
STUD
TYPE
DEEP
ESCUTCHEON
BREAKER
DESIGNATION
DRAWOUT
Stationary
Sub
*
Structure
600
V
.
Ac
50
/
60
Hz
.
AKD
-
8
AKD
-
5
AKD
-
6
AKD
250
V
.
DC
Bar
X
AKR
-
O
-
75
3000
Tube
X
25
Tube
X X
AKR
-
(
*
)
A
-
75
4000
Fingers
X
X
AKR
-
HB
-
75
Fingers
AKR
-
(
»
)
C
-
75
X
3200
Fingers
X
X
AKR
-
nD
-
75
Fingers
X
X
AKR
-
(
*
)
F
-
75
Bar
X
AKR
-
(
*
)
S
-
75
Tube
AKR
-
n
-
100
X
33
Tube
AKR
-
(
*
)
A
-
10
Q
X
X
Fingers
X
X
AKR
-
(
*
)
B
-
100
25
Fingers
X
AKR
-
(
*
)
Q
100
6000 4000
Fingers
X
X
AKR
-
nD
-
100
Fingers
X
X
AKR
-
(
*
)
F
’
10
Q
Bar
X
AKR
-
HS
-
100
Bar
33
i
X
AKR
-
OW
-
100
SPECIAL
DC
BREAKERS
FOR
FIELD
SWITCHING
Tube
ARK
-
N
-
75
F
X
Fingers
X
X
AKR
-
NB
-
75
F
25
Fingers
X
AKR
-
ND
-
75
F
X
4000
Fingers
X
X
AKR
-
NF
-
75
F
Bar
X
AKR
-
NS
-
75
F
33
Tube
AKR
-
N
-
100
F
X
Fingers
X
X
AKR
-
NB
-
100
F
Fingers
X
X
6000
AKR
-
ND
-
100
F
Fingers
X
X
AKR
-
NF
-
100
F
25
Bar
X
AKR
-
NS
-
100
F
33
Bar
X
AKR
-
NW
-
100
F
Example
:
AKR
-
5
B
-
75
identifies
a
drawout
,
substructure
-
mounted breaker
equipped
with the
SST
trip
device
.
The
EC
trip
devices
are
electro
-
mechanical
,
refer
to
GEI
86157
for
detailed
information
.
BREAKER
MODELS
(
*
)
This
digit
identifies
the
trip
device
:
2
=
EC
-
1
or
E
02
A
.
Dc
only
.
4
=
ECS
5
-
SST
50
/
60
Hertz
only
.
6
=
MicroVersaTrip
50
/
60
Hertz
only
.
7
=
MicroVersaTrip
RMS
-
9
50
/
60
Hertz
only
.
8
=
EPIC
MicroVersaTrip
.
9
=
MicroVersaTrip
Plus and
PM
50
/
60
Hertz
only
.
For
detailed
information
on
these
trip
devices
refer
to
the
following
publication
:
GEI
-
86157
N
=
Non
-
automatic
.
In
addition
,
all
non
-
automatic
250
V
.
Dc breaker
types
carry
the
suffix
letter
D
after
the
frame
number
,
e
.
g
.
,
AKR
-
N
B
-
75
D
.
i
Courtesy of NationalSwitchgear.com

SECTION
3
SECTION
2
Installation
Receiving
,
Handling
,
and
Storage
3.1
CLASS
1
E
APPLICATION
NOTE
:
Before
installing
in
a
Nuclear
Class
1
E
application
,
verify
that
this
product
is
intended
for
such
use
by
checking
the
procurement
records
.
Breakers
with
MicroVersaTrip
Plus
or
MicroVersaTrip
PM
trip
units
are
not
intended
for
use
in
Class
IE
applications
.
Before
installing
or
operating
these
circuit
breakers
,
care
-
fully
read
these
instructions
.
Upon
receipt
of
a
circuit
breaker
,
immediately
examine
for
any
damage
or
loss
sustained
in
shipment
.
If
injury
,
loss
or
rough
handling
is
evident
,
file
a
damage
claim
at
once
with
the
transportation
company
and
notify
the
nearest
General
Electric
Sales
Office
.
Unpack
the
circuit
breaker
as
soon
as
possible
after
it
has
been
received
.
Exercise
care
in
unpacking
to
avoid
damage
to
the
breaker
parts
.
Be
sure
that
no
loose
parts
are
missing
or
left
in
the
packaging
material
.
Blow
out
any
dirt
or
loose
particles
of
packaging
material
remaining
on
or
in
the
breaker
.
If
the
circuit
breaker
is
not
to
be
placed
in
service
at
once
,
store
it
in
a
clean
,
dry
location
in
an
upright
position
.
Support
it
to
prevent
bending
of
the
studs
or
damage
to
any
of
the
breaker
parts
.
Do
not
cover
the
breaker
with
packing
or
other
material
which
absorbs
moisture
that
may
cause
corrosion
of
breaker
parts
.
A
covering
of
kraft
or
other
non
-
absorbent
paper
will
prevent
dust
from
settling
oh
the
breaker
.
3.2
LOCATION
In
choosing
a
location
for
the
installation
of
these
breakers
there
are
two
factors
to
be
considered
.
The
first
is
the
location
'
s
environmental
impact
on
the
breaker
.
Much
better
performance
and
longer
life
can
be
expected
if
the
area
is
clean
,
dry
,
dust
-
free
and
well
ventilated
.
The
second
is
con
-
venience
for
operation
and
maintenance
.
The
breaker
should
be
easily
accessible
to
the
operator
and
there
should
be
sufficient
space
available
for
maintenance
work
.
3.3
MOUNTING
TYPES
AKR
-
75
and
-
100
breakers
are
furnished
in
both
drawout
and
stationary
construction
.
The
mounting
type
is
identified
by
the
second
middle
digit
in
the
breaker
'
s
nameplate
desig
-
nation
as
follows
:
AKR
-
4
(
f
)
-
75
,
where
(
t
)
=
mounting
type
code
letter
per
Table
2
TABLE
2
MOUNTING
TYPE
CODES
Breaker
Type
Code
Letter
Drawout
Stationary
None
AKD
A
AKD
-
5
,
6
B
Substructure
C
AKD
-
6
Only
AKD
-
8
D
F
Substructure
AKR
-
75
/
100
(
25
"
wide
)
S
AKR
-
100
(
33
"
wide
)
W
4
Courtesy of NationalSwitchgear.com

SECTION
5
SECTION
4
Stationary
Breakers
Drawout
Breakers
5.1
General
5.2
No
Code
Letter
-
AKD
Switchgear
5.2
.
1
Breaker
Insertion
5.2
.
2
Breaker
Removal
5.3
Code
A
-
AKD
5
/
6
Switchgear
5.3
.
1
Breaker
Insertion
5.3
.
2
Breaker
Removal
5.4
Code
B
-
AKR
Substructure
5.4
.
1
Breaker
Insertion
5.4
.
2
Breaker
Removal
5.5
Code
C
-
AKD
6
Switchgear
5.6
Code
D
-
AKD
8
Switchgear
5.7
Code
F
-
AKR
Substructure
6
6
These
breakers
are
designed
lor
mounting
in
a
switch
-
board
or
enclosure
designed
and
constructed
by
others
.
Mounting
consists
of
bolting
the
breaker
frame
to
a
support
-
ing
structure
within
the
switchboard
or
enclosure
,
connecting
the
power
buses
or
cables
,
and
making
any
necessary
con
-
trol
connections
.
The
front
cover
of
the
breaker
enclosure
may
be
a
hinged
door
or
a
plate
bolted
to
the
panel
,
including
a
cut
-
out
opening
through
which
the
front
escutcheon
of
the
breaker
can
protrude
.
6
7
8
8
9
9
10
The
surface
on
which
the
breaker
is
mounted
must
be
flat
to
avoid
internal
distortion
of
the
breaker
.
The
supporting
structure
must
be
rigid
enough
to
avoid
any
possibility
of
the
breaker
studs
supporting
the
weight
of
the
breaker
.
Minimum
cutout
dimensions
as
given
by
the
appropriate
outline
draw
-
ing
must
be
maintained
to
provide
adequate
electrical
clear
-
ance
.
Connecting
bus
and
cables
must
be
rigidly
supported
to
prevent
undue
stress
on
the
breaker
terminals
.
11
11
11
11
Outline
drawing
numbers
giving
dimensions
for
designing
a
suitable
enclosure
for
the
stationary
AKR
-
75
and
AKR
-
100
types
are
given
below
.
TABLE
3
Outline
Drawing
Stationary
Breaker
Type
Breaker
Width
Manually
Operated
Electrically
Operated
AKR
-
(
)
S
-
75
25
"
139
C
4560
139
C
4561
AKR
-
(
)
S
-
100
25
"
AKR
-
(
)
W
-
100
139
C
4562
33
"
139
C
4563
e
5
Courtesy of NationalSwitchgear.com

|
Drawout
Breakers
1
.
There
are
three
(
3
)
distinct
drawout
positions
—
CON
-
NECTED
,
TEST
and
WITHDRAWN
.
2
.
Racking
travel
occurs
only
between
the
CONNECTED
position
and
a
point
just
short
of
reaching
the
TEST
position
.
3
.
The
compartment
door
must
be
open
during
racking
.
5.1
GENERAL
Drawout
breakers
are
manufactured
in
six
different
styles
,
identified
in
Table
2
by
the
mounting
code
letters
None
,
A
,
B
,
C
,
D
&
F
.
The
“
no
-
letter
”
models
are
used
in
General
Electric
'
s
AKD
Switchgear
.
Code
A
breakers
were
later
introduced
with
AKD
-
5
Switchgear
and
feature
dosed
-
door
drawout
opera
-
tion
.
Code
Band
F
breakers
provide
an
alternate
dosed
-
door
drawout
arrangement
with
the
stationary
element
furnished
as
a
preassembied
“
substructure
/
1
Code
C
breakers
are
exclusively
for
AKD
-
6
Switchgear
;
they
employ
the
Code
A
drawout
mechanism
but
have
finger
-
type
primary
studs
in
-
stead
of
tubular
.
Code
D
breakers
were
introduced
with
the
AKD
-
8
Switchgear
and
feature
the
Code
B
dosed
-
door
drawout
mechanism
.
The
construction
and
operation
of
each
of
these
drawout
styles
is
covered
under
respective
headings
in
the
following
text
.
NOTE
:
The
Code
B
and
Code
F
drawout
types
are
mutually
interchangeable
.
The
“
no
-
letter
,
”
Code
A
,
Code
C
and
Code
D
drawout
types
are
mutually
noninterchangeable
.
Before
attempting
to
insert
a
breaker
,
verify
that
the
breaker
model
matches
the
compartment
.
The
Code
B
,
D
,
and
F
breakers
are
identical
except
for
the
following
:
a
.
Position
indication
label
.
This
label
is
mounted
on
the
sides
of
the
breaker
’
s
deep
escutcheon
and
indicates
the
DISCONNECTED
,
TEST
,
and
CONNECTED
posi
-
tions
.
The
Code
D
breaker
label
indicates
the
proper
position
only
in
AKD
8
switchgear
.
The
Code
B
and
F
breaker
labels
indicate
properly
only
in
AKR
Substruc
-
tures
.
b
.
Trip
device
.
Code
D
and
F
breakers
are
factory
sup
-
plied
with
MicroVersaTrip
or
PM
trip
units
.
5.2
.
1
BREAKER
INSERTION
1
.
Prior
to
lifting
a
breaker
to
its
intended
compartment
location
,
observe
the
following
precautions
:
a
.
Check
the
compartment
to
insure
that
it
is
free
of
foreign
objects
.
b
.
Verify
that
the
breaker
is
the
correct
type
for
that
compartment
.
c
.
Insure
that
the
breaker
is
OPEN
.
d
.
Apply
a
thin
,
fresh
coat
of
D
50
HD
38
lubricant
to
the
breaker
'
s
primary
disconnects
.
e
.
Insure
that
the
racking
cams
on
the
breaker
are
correctly
positioned
for
initial
engagement
with
the
pins
in
the
compartment
.
To
do
this
,
insert
the
rack
-
ing
handle
and
rotate
it
fully
clockwise
.
f
.
If
a
compartment
contains
a
keylock
,
it
will
not
ac
-
cept
the
AKR
-
75
/
100
replacement
breakers
as
re
-
ceived
.
The
AKR
drawout
mechanism
differs
from
that
of
its
predecessor
AK
model
,
causing
the
AKR
breaker
to
mechanically
interfere
with
the
keylock
during
breaker
insertion
.
To
remedy
this
it
will
be
necessary
to
relocate
the
keylock
using
new
mount
-
ing
hardware
included
as
a
modification
kit
.
So
al
-
tered
,
the
compartment
accepts
both
AK
and
AKR
types
.
2
.
Using
a
suitable
lifting
mechanism
and
spreader
rig
,
position
lifting
hooks
at
the
cutout
notches
in
the
top
wrap
-
around
frames
of
the
breaker
.
Exercise
care
to
avoid
damage
to
the
control
wiring
.
3
.
Open
the
compartment
door
.
Keeping
the
rollout
tray
positioned
inside
the
compartment
,
raise
the
breaker
above
the
elevation
of
the
tray
.
4
.
Depress
the
test
position
stop
lever
and
pull
the
tray
all
the
way
out
to
its
WITHDRAWN
position
.
5
.
Lower
the
breaker
over
the
tray
until
it
is
about
one
-
half
inch
above
the
two
dowel
pins
on
the
tray
.
Push
the
breaker
back
into
the
compartment
until
the
rear
bottom
flange
of
the
breaker
rests
against
the
guides
behind
the
dowel
pins
.
6
.
Slowly
lower
and
guide
the
breaker
onto
the
tray
so
the
holes
in
the
rear
flange
fit
over
the
two
dowel
pins
.
When
correctly
positioned
on
the
dowel
pins
,
the
breaker
'
s
rear
and
side
bottom
flanges
will
rest
firmly
on
the
tray
.
7
.
Secure
the
breaker
to
the
tray
by
inserting
and
tighten
-
ing
two
-
%
inch
hex
-
head
screws
into
the
front
holes
of
its
side
flanges
.
8
.
If
the
breaker
is
a
manually
operated
type
,
push
it
into
the
compartment
until
the
TEST
position
stop
engages
,
preventing
further
travel
.
The
breaker
is
now
in
the
TEST
position
.
i
c
.
Appearance
.
Code
D
and
F
breakers
use
a
different
color
scheme
on
their
deep
escutcheons
and
labels
.
Also
,
they
have
a
differently
shaped
manual
operating
handle
.
5.2
NO
CODE
LETTER
(
AKD
SWITCHGEAR
)
(
Fig
.
1
)
These
“
no
-
letter
”
AKR
-
75
/
100
models
are
replacements
for
their
AK
-
75
and
AK
-
100
predecessors
in
AKD
switchgear
.
The
racking
mechanism
is
breaker
-
mounted
and
the
breakers
are
bolted
to
a
roller
-
mounted
tray
in
an
arrange
-
ment
similar
to
the
BType
(
see
Section
5.4
)
.
In
addition
to
the
characteristics
listed
in
Table
1
,
the
AKD
drawout
has
the
following
unique
aspects
:
i
6
Courtesy of NationalSwitchgear.com

If
the
breaker
is
electrically
operated
,
push
it
into
the
compartment
until
the
spring
discharge
stop
is
encountered
.
Release
this
by
depressing
the
“
spring
discharge
”
lever
on
the
bottom
of
the
breaker
(
see
fig
.
1
)
,
then
continue
pushing
the
breaker
into
the
compartment
until
the
TEST
position
stop
engages
.
4
.
To
withdraw
a
manually
operated
breaker
from
TEST
,
depress
the
test
position
stop
lever
and
pull
the
breaker
out
of
its
compartment
until
the
tray
stops
.
At
this
position
the
tray
will
be
fully
withdrawn
against
its
limit
stop
.
The
withdrawal
movement
for
electrically
operated
breakers
differs
from
the
above
in
that
the
tray
is
stopped
short
of
its
WITHDRAWN
limit
by
the
compartment
-
mounted
spring
discharge
stop
.
In
order
to
complete
the
withdrawal
,
the
closing
springs
first
must
be
discharged
by
depressing
the
spring
discharge
lever
on
the
breaker
.
Next
,
keeping
this
lever
depressed
,
pull
the
breaker
completely
out
against
the
tray
limit
stop
.
A
ramp
cam
mounted
on
the
compartment
wall
keeps
the
breaker
trip
-
free
during
the
outward
travel
from
the
TEST
position
.
5
.
Before
proceeding
with
subsequent
operations
to
re
-
move
the
breaker
from
the
tray
,
visually
check
the
breaker
’
s
CHARGED
-
DISCHARGED
and
OPEN
-
CLOSED
indicators
to
verify
that
the
breaker
is
open
and
the
springs
are
discharged
.
This
precaution
is
particularly
important
at
locations
where
AKR
-
75
and
-
100
breakers
are
being
deployed
in
AKD
equipments
as
replacements
for
AK
-
75
and
-
100
non
-
quick
-
close
electrical
models
;
these
compartments
did
not
need
and
were
not
equipped
with
a
spring
discharge
stop
.
i
NOTE
:
A
spring
discharge
stop
will
not
be
present
in
some
AKD
-
type
compartments
originally
furnished
for
electrically
operated
AK
-
75
and
AK
-
100
breakers
of
the
non
-
quick
-
close
type
.
9
.
Depress
the
TEST
position
stop
lever
and
push
the
breaker
farther
into
the
compartment
until
the
outer
surfaces
of
the
racking
cams
butt
against
the
racking
pins
in
the
housing
.
10
.
Insert
the
racking
handle
(
673
D
0500
-
636
-
05
)
on
the
jackscrew
shaft
at
the
upper
right
side
of
the
breaker
.
Rotate
it
clockwise
until
the
jackscrew
comes
to
a
solid
stop
.
The
breaker
is
now
in
the
CONNECTED
position
.
5.2
.
2
BREAKER
REMOVAL
1
.
With
the
door
closed
and
latched
,
trip
the
breaker
.
6
.
Remove
the
two
-
%
inch
hex
-
head
screws
which
fasten
the
breaker
to
the
compartment
tray
.
2
.
Open
the
door
and
insert
the
racking
handle
on
the
jackscrew
shaft
.
Rotate
it
counterclockwise
until
the
jack
-
screw
comes
to
a
solid
stop
.
At
this
point
the
primary
discon
-
nects
are
disengaged
.
3
.
Now
pull
the
breaker
out
of
its
compartment
until
the
test
position
stop
engages
,
thereby
holding
the
breaker
in
the
TEST
position
.
7
.
Using
care
to
prevent
damage
to
the
wiring
,
attach
the
lifting
device
to
the
cutout
notches
in
the
top
wraparound
frame
of
the
breaker
.
i
i
Fig
.
1
AKR
-
2
-
75
electrically
operated
,
2
-
pole
Dc
(
AKD
type
)
7
Courtesy of NationalSwitchgear.com

8
.
Lift
the
breaker
approximately
one
-
half
inch
off
the
dowel
pins
.
Push
the
tray
back
into
the
compartment
.
With
the
door
open
,
the
breaker
is
manually
pulled
out
from
the
DISCONNECTED
to
the
WITHDRAWN
position
;
here
the
breaker
is
completely
out
of
its
compartment
,
ready
for
moval
.
re
-
i
9
.
Swing
the
breaker
forward
until
the
primary
discon
-
nects
clear
the
compartment
.
Lower
the
breaker
onto
a
flat
surface
free
of
protrusions
that
could
damage
the
breaker
’
s
internal
parts
.
NOTE
:
All
electrically
operated
AKR
-
751100
breakers
employ
a
spring
discharge
interlock
which
prevents
removal
of
the
breaker
with
its
clos
-
ing
springs
in
the
charged
state
.
Before
the
breaker
can
be
moved
away
from
the
DISCON
-
NECTED
position
toward
the
WITHDRAWN
posi
-
tion
,
it
is
necessary
to
depress
and
hold
the
breaker
-
mounted
spring
discharge
lever
(
Fig
.
2
)
.
This
discharges
the
closing
springs
and
releases
the
breaker
.
Manually
operated
breakers
do
not
require
this
interlock
because
their
closing
springs
are
never
propped
in
the
fully
charged
position
.
Refer
to
the
“
Manual
Closing
”
text
in
section
8.2
.
5.3
.
1
BREAKER
INSERTION
(
CODE
A
)
1
.
Prior
to
lifting
a
breaker
to
its
intended
compartment
location
,
observe
the
following
precautions
:
a
.
Check
the
compartment
to
insure
that
it
is
free
of
foreign
objects
.
b
.
Verify
that
the
breaker
is
the
correct
type
for
that
compartment
.
c
.
Insure
that
the
breaker
is
OPEN
.
d
.
Apply
a
thin
,
fresh
coat
of
D
50
HD
3
Q
lubricant
to
the
breaker
’
s
primary
disconnects
.
5.3
CODE
A
(
AKD
SWITCHGEAR
)
The
drawout
mechanism
is
equipment
mounted
and
is
externally
operated
by
a
removable
racking
handle
.
The
breaker
is
supported
by
two
pins
protruding
from
each
side
of
its
frame
,
these
engaging
slots
in
telescoping
rails
fastened
to
the
compartment
walls
.
The
drawout
operation
features
four
positions
—
CON
-
NECTED
,
TEST
,
DISCONNECTED
and
WITHDRAWN
.
In
the
CONNECTED
position
the
primary
and
secondary
dis
-
connects
are
fully
engaged
.
The
breaker
must
be
tripped
before
it
can
be
racked
into
or
out
of
this
position
.
In
the
TEST
position
the
primary
contacts
are
disconnected
but
the
sec
-
ondary
contacts
remain
engaged
.
This
allows
complete
breaker
operation
without
energizing
the
primary
circuit
.
In
the
DISCONNECTED
position
neither
primary
nor
second
-
ary
contacts
are
made
.
Breakers
can
be
racked
between
these
three
positions
with
the
compartment
door
closed
.
Each
position
is
clearly
identified
by
a
rotary
indicator
visible
through
an
opening
in
the
door
.
i
ft
Fig
.
2
AKR
-
5
A
-
75
electrically
operated
(
AKD
-
5
,
6
type
)
8
Courtesy of NationalSwitchgear.com

5
.
Attach
lifting
hooks
at
the
cutouts
in
the
top
wrap
-
around
frame
and
raise
the
breaker
until
its
mounting
pins
clear
the
track
slots
.
6
.
Push
the
tracks
into
the
compartment
so
that
the
breaker
can
be
lowered
to
a
smooth
surface
free
of
protru
-
sions
that
could
damage
the
internal
parts
of
the
breaker
.
2
.
With
the
movable
inner
housing
of
the
compartment
in
the
CONNECTED
position
,
insert
the
racking
handle
(
part
no
.
673
D
0500
-
636
-
05
)
on
the
jackscrew
shaft
located
at
the
left
side
of
the
compartment
just
above
the
position
indicator
.
3
.
Rotate
the
handle
counterclockwise
until
the
jack
-
screw
stops
—
the
indicator
should
read
DISC
.
4
.
Remove
the
racking
handle
and
open
the
compart
-
ment
door
.
5
.
Rotate
the
two
track
-
lock
links
and
pull
the
right
track
to
the
limit
of
its
travel
.
6
.
Using
a
lifting
device
,
raise
the
breaker
until
the
breaker
mounting
pins
are
approximately
one
-
inch
above
the
tracks
.
Use
care
to
avoid
damage
to
the
breaker
wiring
.
7
.
Pull
the
left
track
out
to
the
limit
of
its
travel
and
lower
the
breaker
so
its
mounting
pins
drop
into
the
slots
in
the
track
.
Remove
the
lifting
device
.
8
.
Push
the
breaker
in
against
the
track
stops
.
On
electri
-
cally
operated
breakers
,
be
sure
to
depress
the
spring
dis
-
charge
lever
while
doing
so
.
Rotate
the
two
track
-
lock
links
to
lock
the
breaker
in
place
.
Close
the
compartment
door
.
9
.
Insert
the
racking
handle
on
the
jackscrew
shaft
and
rotate
it
clockwise
to
move
breaker
into
the
compartment
.
Breaker
is
in
CONNECTED
position
when
jackscrew
stops
.
The
indicator
should
read
CONN
.
10
.
Orient
the
jackscrew
so
that
its
slotted
sleeve
is
free
to
move
outward
,
otherwise
the
breaker
will
remain
trip
-
free
.
<
5.4
CODE
B
(
AKR
SUBSTRUCTURE
)
(
Figs
.
3
,
4
)
The
AKR
substructure
is
a
self
-
contained
,
open
-
type
framework
serving
as
the
stationary
receptacle
for
a
drawout
breaker
.
Featuring
closed
-
door
type
drawout
operation
,
it
is
designed
for
convenient
mounting
in
individual
breaker
com
-
partments
of
drawout
switchgear
equipments
.
It
provides
means
for
making
the
primary
and
secondary
connections
to
the
removable
breaker
element
and
is
factory
aligned
.
The
breakers
are
bolted
to
a
roller
-
mounted
tray
which
is
part
of
the
substructure
.
The
racking
mechanism
is
breaker
-
mounted
.
The
racking
handle
is
inserted
through
the
com
-
partment
door
and
acts
to
rotate
slotted
racking
cams
on
each
side
of
the
breaker
frame
.
The
cams
engage
fixed
pins
mounted
on
both
side
plates
of
the
substructure
,
moving
the
breaker
in
and
out
through
the
same
four
positions
described
for
the
Code
A
Types
—
CONNECTED
,
TEST
,
DISCON
-
NECTED
,
WITHDRAWN
.
Breaker
position
is
registered
di
-
rectly
by
markings
on
the
right
side
of
the
escutcheon
which
appear
as
*
it
emerges
through
the
door
cutout
.
All
AKR
B
breakers
for
use
in
substructures
are
equipped
with
a
"
deep
”
escutcheon
instead
of
the
standard
escut
-
cheon
employed
on
all
other
models
.
This
configuration
al
-
lows
the
breaker
to
be
racked
between
the
CONNECTED
and
DISCONNECTED
positions
with
the
door
closed
.
The
door
does
not
move
with
the
breaker
as
it
does
in
the
AKD
-
5
and
AKD
-
6
models
.
5.3
.
2
BREAKER
REMOVAL
(
CODE
A
)
1
.
Trip
the
breaker
.
Insert
the
racking
handle
into
the
jack
-
screw
shaft
.
2
.
Rotate
the
handle
counterclockwise
until
the
jackscrew
stops
.
Indicator
should
read
DISC
.
3
.
Remove
the
racking
handle
and
open
the
compartment
door
.
4
.
Rotate
the
two
track
-
lock
links
and
pull
the
breaker
out
to
the
track
travel
limit
.
This
is
the
WITHDRAWN
position
.
If
the
breaker
is
electrically
operated
,
the
breaker
-
mounted
Spring
Discharge
lever
must
be
depressed
to
permit
with
-
drawal
.
<
NOTE
:
Spring
discharge
interlocks
were
not
re
-
quired
and
are
not
present
in
existing
compart
-
ments
originally
furnished
for
non
-
quick
-
close
type
electrically
operated
AK
-
75
/
100
breakers
.
Regard
-
less
of
whether
this
interlocking
hardware
is
present
in
a
compartment
,
ALWAYS
verify
that
the
closing
springs
are
discharged
and
the
breaker
is
tripped
OPEN
before
removal
is
attempted
.
Fig
.
3
AKR
drawout
substructure
Cat
.
No
.
TAK
8
SS
02
3200
amperes
i
9
Courtesy of NationalSwitchgear.com

I
5.4
.
1
BREAKER
INSERTION
(
CODE
B
)
5
.
Lower
the
breaker
over
the
tray
until
it
is about
one
-
half
inch above the
two
dowel
pins
on
the
tray
.
Push
the
breaker
back into the
compartment
until the
rear
bottom
flange
of
the
breaker
rests
against
the
guides
behind
the
dowel
pins
.
6
.
Slowly
lower
and
guide
the
breaker
onto
the
tray
so
the
holes
in
the
rear
flange
fit
over
the
two
dowel
pins
.
When
correctly
positioned
on
the dowel
pins
,
the
breaker
’
s rear
and
side bottom
flanges
will
rest
firmly
on
the
tray
.
7
.
Secure
the breaker
to
the
tray
by inserting
and
tighten
-
ing
two
-
%
inch hex head
screws
into the
front
holes
of
its side
flanges
.
8
.
Push
the
breaker into
the
compartment
until the
spring
discharge
stop
engages
,
preventing
further
movement
.
This
is the
DISCONNECTED
position
.
At
this
point
the
racking
cams
are
positioned
to
engage
the
fixed
racking
pins
in
the
compartment
,
ready
to
begin
the
racking
motion
.
It
is
to
be
noted that
manually
operated
breaker models
do
not
employ
a
spring
discharge
interlock
.
It
is
unnecessary
because their
operating
mechanism
never
statically
posi
-
tions the
springs
in
a
fully
-
charged
state
.
However
,
to
provide
necessary
means
for
mechanically
securing
the
breaker
in
the
DISCONNECTED
position
,
a
position
stop
is
employed
.
It
has
a
release
lever marked
“
Push
to
Withdraw
”
and is
located
in
the
same
place
as
the
spring discharge
release
lever
on
electrically
operated
breakers
—
see
Fig
.
4
.
1
.
Prior
to
lifting
a
breaker
to
its
intended
compartment
location
,
observe
the
following
precautions
:
a
.
Check
the
compartment
to
insure
that
it
is
free
of
foreign
objects
.
b
.
Verify
that the
breaker is
the
correct
type
for
that
compartment
.
c
.
Insure that
the breaker
is
OPEN
.
d
.
Apply
a
thin
,
fresh
coat
of
D
50
HD
38
lubricant
to
the
breaker
’
s
primary
disconnects
.
e
.
Insure
that the
racking
cams on
the
breaker
are
correctly
positioned
for
initial
engagement
with
the
pins
in
the
compartment
.
To do this
,
insert
the
rack
-
ing
handle and
rotate
it
fully
counterclockwise
.
2
.
Using
a
suitable
lifting
mechanism
and
spreader
rig
,
position
lifting
hooks
at
the
cutout
notches
in
the
top
wrap
-
around
frames of
the breaker
.
Exercise
care
to
avoid
damage
to
the
control
wiring
.
3
.
Open
the
compartment
door
.
Keeping
the
rollout
tray
positioned
inside the
compartment
,
raise
the
breaker above
the elevation
of
the
tray
.
4
.
Pull the
tray
all the
way
out to
its
WITHDRAWN
limit
.
i
FINGER
-
TYPE
PRIMARY
DISCONNECTS
“
PUSH
TO
WITHDRAW
”
RELEASE
LEVER
I
Fig
.
4
AKR
-
9
F
-
75
manually
operated
(
substructure
type
)
10
Courtesy of NationalSwitchgear.com