GE AKR-50 Installation Manual

GEI
-
86150
-
A
The
jackscrew
drives
the
crankshaft
via
an
internally
threaded
trunnion
supported
in
a
crank
centrally
located
on
the
crankshaft
.
The
jackscrew
is
rotated
by
a
removable
,
externally
-
operated
crank handle
(
Part
No
.
193
A
1990
P
1
)
in
-
serted
thru
an
opening
in
the breaker
’
s
escutcheon
.
Access
to
this
opening
is
via
a
sliding
cover
marked
RACKING SCREW
.
WITHDRAWN
—
With
the
compartment
door
open
,
the
breaker
can
be
manually
pulled
out
to
the
WITHDRAWN
position
.
At
this
point
the
tracks
are
fully
extended and
the
breaker is
completely
out
of
its
compartment
,
ready
for
removal
.
Note that the
racking
mechanism
is
not
employed
for
movement
of
the
breaker
between
the
DISCONNECTED
and
WITHDRAWN
positions
.
The
drawout
operation
features
four
discrete
positions
:
CONNECTED
—
This
is
the breaker
’
s
“
In
-
Service
”
position
.
It
is
fully
inserted
in
its
compartment
;
the
primary
and
secondary
disconnect
contacts
are
fully
engaged
.
The breaker
must
be
tripped
before
it
can
be racked into
or
out
of
this
position
.
TEST
—
In
this
position
the
primary
contacts
are
discon
-
nected
but
secondary
contacts
remain
engaged
.
This
allows
complete
breaker
operation
without
energizing
the
primary
circuit
.
DISCONNECTED
—
Both
primary
and
secondary
contacts
are
disengaged
.
Breakers
can
be
racked between
the above
positions
with
the
compartment
door
closed
.
Each
of
the three
positions
is
clearly
shown
by
a
rotatry
indicator
visible
through
an
opening
in
the
door
.
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
.
Fig
.
2
5
Courtesy of NationalSwitchgear.com

GE AKR-50 Specifications

General

Brand	GE
Model	AKR-50
Category	Circuit breakers
Language	English