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Voftoge Swifchgeo
r,
GEK-721
0l
BREAKER
COMPARTMENTS_AKR, AKRU, AKRT
BREAKERS-MOUNTING CODE
3A,
4A
OR
5A
These breakers
are supported
on
a rollout track
in
the
same manner
as
the
AK
breakers.
However,
since
the
rackout
mechanism
is
mounted
on the
breaker, there
are
no
jackshafts
in
the
enclosure.
See
Figure
7.
Racking
arms
on both
sides
of
the
breaker
frame
engage
the
drawout
mechanism
pins
fastened
to
both
sides
of the
compartment.
Note
that
extra
items
shown
in
Figures
6
and
7
(such
as
secondary disconnects,
position
switches
and ground
sensor
secondary disconnects)
may
appear
in
any
compartment
or not
be
included at
all,.depending on
the
equipment
spec-
ified.
Also
note
that
the bracing
for
the
primary
disconnects
shown
in
Figure
7
may be
a
single
piece
of
insulating
material
instead
of
three
separate
pieces.
A
stop
link is
located
on
each
side
of all AK
breaker
compartments.
These
links
prevent an operator
from manu-
ally
pushing
a
breaker set on
the tracks
all
the way into
the
compartment when
the racking
mechanism
is in
the
connected
position.
In a
compartment
made
for
AKR
breakers,
the
latches
that
rest
on the drawout
mechanism
pins
prevent the inner
house
from
being
manually
moved
all
the way into the
compartment
when
no
breaker
is
set
on the
tracks.
All AK
or AKR circuit
breakers
of
the
same
type
and
SECONDARY
DISCONNECTS
KEY
INTERLOCK
TRACK
LOCK
LINK
ROLLOUT
OPERA
SHAFT
INDICATOR
CURRENT
TRANSFORMER
rating
which have duplicate
wiring may be
interchanged.
Each
breaker
compartment has
four
positions. They
are
illustrated
in
Figure
18
and
described below.
1.
CONNECIED
POSIIION-The breaker
is in
operating
position,
both primary and
secondary contacts
made
and
the
door
closed.
2.
TESI
POSITION-The
primary
contacts are separated
by
a
safe distance,
but the
secondary
contacts
are
made.
Any
breaker
test
not involving
power
may be
made
in
this
position. The door
may
be
closed
in this
posi-
tion,
and
must be
closed
before
charging
the
spring
on
a manually
operated
AKR
breaker
because
an
open
door
will
interfere
with
the breaker handle travel.
3.
DISCONNECIED
POSITION-Neither the
primary
nor
the
secondary contacts are made,
The door may
be
closed.
4.
WITHDRAWN
POSITION-The
breaker
is
completely
out of its
compartment
ready
for
removal
from
the
equipment. The
door must
be
open.
NOTE:
ALTHOUGH
THE
BREAKER COM.
PARTMENT DOOR
IUTAY
BE
OPENED
IN
ANY
POSITIOJV,Ijr
IS
RECOMMENDED
THAT
THE
DOOR
ONLY BE OPENED WHEN THE
BREAKER
/S IiY THE
DISCOIVJVECT
OR
WITHDRAWN
POSITION.
CAUTION:
NEVER OPEN
THE
BREAKER
DOOR
WHEN
THE
BREAKER
'S
CLOSED
AND
IN
THE
CONNECTED
POSITION.
STOP LINK
ROLLOUT
TRACK
JACK
SHAFT
CHAIN
COVER
GROUND SENSOR
SECONDARY DISCONNECT
HA,
6
$012645)
Typicol
AK
breoker
comporlmenl
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