GE AKR-50 Installation Manual

GEI
-
86150
-
A
OPERATION
GENERAL
ELECTRICAL
CLOSING
A
breaker
may
be
equipped
to
operate
either
manually
or
electrically
.
Both
types
of
operation
result
in
the
same
fast
-
closing
movement
as
far
as
the
contact
action
is
concerned
.
The
variation
is
in
the
way
energy
is
stored
in
the
closing
spring
,
and
how
it
is
released
.
On
electrically
operated
breakers
the
closing
springs
are
charged
by
a
gear
motor
.
With
the
springs
discharged
,
voltage
applied
to
the
control
circuit
will
energize
the
motor
through
the
"
G
”
switch
contacts
—
see
fig
.
8
.
The
motor
,
through
the
gear
reduction
output
crank
,
compresses
the
closing
springs
until
they
are
fully
charged
.
As
this
fully
charged
position
is
reached
,
mechanically
operated
switches
“
F
”
and
“
G
”
re
-
verse
their
shown
position
,
the
“
G
”
switch
deenergizing
the
motor
and
the
“
F
”
switch
establishing
a
circuit
to
the
“
X
”
relay
.
At
the
same
time
,
a
mechanical
prop
is
positioned
to
prevent
the
discharge
of
the
fully
charged
closing
spring
.
With
the
closing
spring
propped
fully
-
charged
,
the
breaker
is
ready
for
closing
.
This
may
be
accomplished
electrically
by
depressing
the
closing
switch
on
the
breaker
(
if
so
equipped
)
or
by
a
remote
closing
switch
.
Operation
of
the
closing
switch
energizes
the
“
X
”
relay
,
which
in
turn
energizes
the
closing
solenoid
.
This
removes
the
prop
,
releasing
the
closing
springs
to
close
the
breaker
.
As
the
closing
relay
is
energized
,
it
energizes
anti
-
pump
relay
“
W
”
.
If
the
closing
switch
is
maintained
closed
,
the
anti
-
pump
relay
will
remain
picked
-
up
to
prevent
a
second
closing
operation
on
the
breaker
in
the
event
it
is
tripped
open
automatically
.
The
closing
impulse
must
be
released
and
reapplied
before
a
second
closing
operation
can
occur
.
MANUAL
CLOSING
Manually
operated
AKR
breakers
are
constructed
with
front
-
mounted
handles
.
Handle
operation
resets
the
mechanism
and
fully
charges
the
closing
spring
.
A
complete
charge
is
accomplished
in
either
cranking
the
handle
through
one
cycle
(
135
-
degree
swing
)
or
three
cycles
(
50
-
degree
swing
)
.
The
CLOSE
button
,
mounted
on
the
escutcheon
,
is
used
to
close
the
breaker
contacts
and
the
TRIP
button
to
open
them
.
If
equipped
with
a
closing
solenoid
,
a
manual
breaker
may
be
closed
remotely
by
a
control
switch
or
relay
.
Before
this
can
be
done
,
however
,
the
closing
spring
has
to
be
charged
by
hand
.
The
closing
solenoid
is
an
optional
accessory
and
is
not
supplied
unless
specified
in
the
breaker
order
.
REMOTE
CLOSE
FU
FU
HH
-
,
X
TRIP
i
A
LEGEND
/
jN
t
CONTROL
SOURCE
|
l
PB
CC
—
CLOSING
SOLENOID
F
—
CUTOFF
SWITCH
,
CLOSED
WHEN
CLOSING
SPRING
IS
FULLY
CHARGED
.
G
—
CUTOFF
SWITCH
.
OPEN
WHEN
CLOSING
SPRING
IS
FULLY
CHARGED
L
—
AUXILIARY
SWITCH
M
—
CHARGING
MOTOR
PB
—
CLOSE
PUSHBUTTON
ON
BREAKER
ESCUTHEON
,
OPTIONAL
.
TC
—
SHUNT
TRIP
DEVICE
W
—
ANTI
-
PUMP
RELAY
X
—
CONTROL
RELAY
x
_
L
I
nn
r
n
“
7
*
CC
I
Gl
i
-
_
F
|
I
X
I
I
I
.
I
!
G
|
3
.
L
<
T C
M
CC
w
X
w
\
y
V
Fig
.
8
Elementary
diagram
for
electrically
operated
drawout
breaker
.
Contact
positions
are
shown
with
breaker
open
and
closing
springs
discharged
.
12
Courtesy of NationalSwitchgear.com

GE AKR-50 Specifications

General

Brand	GE
Model	AKR-50
Category	Circuit breakers
Language	English