GE AK-1-15 Maintenance Instructions

GEK
-
7303
Low
Voltage
Power
Circuit
Breakers
MANUAL
MAINTENANCE
CLOSING
OF
ELECTRICAL
BREAKERS
An
electrical
breaker
may
be
closed
manually
by
means
of
the
maintenance
handle
furnished
with
the
breaker
.
reach
the
fully
charged
position
,
the
mechanically
operated
switches
operate
,
reversing
their
contacts
.
Upon
operation
of
these
switches
the
motor
is
stopped
by
the
opening
of
the
G
switch
.
The
closing
of
the
F
switch
prepares
the
breaker
for
a
closing
operation
.
To
observe
the
operation
of
the
breaker
with
-
out
power
,
with
the
breaker
open
and
springs
discharged
,
proceed
as
follows
:
1
.
Charge
the
closing
spring
with
the
main
-
tenance
handle
(
1
,
Fig
.
3
)
until
the
indica
-
tor
reads
"
charged
”
.
2
.
Continue
to
operate
the
maintenance
handle
until
the
breaker
closes
.
3
.
Open
the
breaker
by
pushing
the
trip
button
(
4
,
Fig
.
2
)
.
ELECTRICAL
CLOSING
The
electrical
control
system
is
comprised
of
an
X
relay
,
two
double
contact
mechanically
operated
switches
(
F
and
G
)
,
a
push
button
closing
switch
and
any
means
for
remote
closing
which
the
user
may
incorporate
into
the
system
.
When
voltage
is
first
applied
to
the
breaker
,
(
before
any
closing
signal
is
given
)
the
motor
is
energized
through
two
of
the
X
relay
contacts
and
the
two
G
switch
contacts
.
The
motor
then
compresses
the
closing
springs
to
the
"
pre
-
charged
"
position
at
which
point
the
mechanically
operated
F
and
G
switches
are
operated
.
This
opens
the
G
contacts
,
stopping
the
motor
,
and
closes
the
F
contacts
,
which
readies
the
system
for
the
actual
closing
of
the
breaker
.
When
the
push
button
or
remote
switch
signals
for
a
closing
operation
,
the
X
relay
coil
is
energized
,
operating
the
X
contacts
.
This
seals
in
the
X
relay
and
energizes
the
motor
once
again
and
the
closing
operation
takes
place
.
QUICK
CLOSE
FOR
ELECTRICAL
BREAKERS
Functionally
,
the
quick
close
mechanism
differs
from
the
standard
electrical
mechanism
in
that
the
pre
-
charge
operation
is
extended
to
completely
charge
the
closing
springs
.
At
the
end
of
the
charg
-
ing
operation
,
which
takes
approximately
5
seconds
,
a
latch
plate
engages
the
prop
roller
to
prevent
the
closing
springs
from
discharging
.
With
the
closing
springs
fully
charged
the
breaker
is
ready
for
a
closing
operation
upon
release
of
the
prop
roller
.
This
may
be
accom
-
plished
either
manually
,
by
depressing
the
closing
lever
on
the
breaker
,
or
electrically
by
closing
the
remote
closing
switch
.
Upon
the
release
of
the
prop
roller
the
closing
springs
discharge
and
close
the
breaker
in
the
same
manner
as
on
the
standard
electrical
breaker
.
Fig
.
2
(
8039671
)
Front
view
of
AK
-
2
-
50
breaker
1
.
Auxiliary
Switch
2
.
Position
Indicator
3
.
Relay
4
.
Manual
Trip
Button
5
.
Shaft
for
Manual
Mainte
-
nance
Closing
Handle
6
.
Spring
Charged
-
Discharged
Indicator
7
.
Motor
Cut
-
off
Switches
8
.
Arc
Quenchers
A
closing
signal
now
given
energizes
the
control
relay
X
whose
contacts
close
and
complete
the
circuit
through
the
closing
relay
coil
.
With
the
closing
relay
coil
energized
the
breaker
closes
as
described
above
.
At
the
same
time
the
closing
relay
contact
closes
to
energize
the
anti
-
pump
relay
causing
its
contacts
to
reverse
providing
the
anti
-
pump
feature
.
When
the
breaker
closes
,
the
mechanical
opera
-
ted
G
switches
close
to
energize
the
motor
again
and
the
F
switches
open
and
de
-
energize
the
con
-
trol
relay
from
being
energized
until
the
breaker
is
tripped
open
.
With
the
G
switches
closed
,
the
motor
charges
the
closing
springs
ready
for
the
next
closing
operation
.
With
control
voltage
applied
,
the
motor
is
energized
through
the
G
switch
contacts
,
and
charges
the
closing
springs
.
When
the
springs
4
Courtesy of NationalSwitchgear.com

GE AK-1-15 Specifications

General

Brand	GE
Model	AK-1-15
Category	Circuit breakers
Language	English