GE AK-50 User Manual

GE
/
-
74600
low
-
vo
/
foya
Power
Circuit
Broofrors
.
28
1
.
Screw
2
.
Stationary
Arcing
Contact
Pin
(
Stationary
Arcing
Contact
)
4
.
Movable
Arcing
Contact
5
.
Braid
5
A
.
Stationary
Intermediate
Contact
6
.
Movable
Main
Contact
7
.
Shouldered
Pin
Pin
(
Arcing
Contact
Link
)
Insulating
Link
Pin
(
Insulating
Link
)
10
A
,
Adjusting
Plate
11
.
Pin
(
Side
Link
)
11
A
.
Buffer
Spacers
12
.
Link
13
.
Clevis
14
.
Clevis
Pin
14
A
,
Opening
Spring
1
5
.
Lower
Stud
Pole
Unit
Base
17
.
Spring
(
Main
Movable
Contact
)
18
.
Pin
(
Movable
Main
Contact
)
19
.
Pin
(
Movable
Arcing
Contact
)
20
.
Side
Link
20
A
.
Contact
Stop
21
.
Spring
(
Stationary
Main
Contact
)
Spring
(
Stationary
Arcing
Con
-
tact
)
23
.
Upper
Stud
24
.
Pin
(
Stationary
Main
Contact
)
25
.
Stationary
Main
Contact
Screw
27
.
Screw
28
.
Stop
27
26
3
.
25
24
23
8
.
22
9
.
10
.
2
!
5
*
20
A
_
—
'
20
16
.
10
I
0
A
11
HA
12
13
22
.
14
I
4
A
26
.
)
Pole
unit
assembly
—
AK
-
50
Fig
.
6
.
and
2
3
/
4
in
.
The
gap
may
be ad
-
justed
by
varying
the number
of
buffer
spacers
(
11
A
)
on
the
cross
-
bar
.
The
locking
nuts
on
the
buffer bolts should
be locked
in
such
a
position
that
the
buffer bolt
may
be rotated
freely
.
REPLACEMENT OF
CONTACTS
(
Fig
.
6
)
Stationary
Arcing
Contacts
(
2
,
Fig
.
6
)
a
Fig
.
7
)
1
.
Remove
the
upper
plate
by
re
-
moving
two
screws
(
1
)
.
On
the
AK
-
75
and
-
100
remove
the
top
contact
block
(
25
,
Fig
.
7
)
and
remove
insulation
(
3
,
Fig
.
7
)
.
2
.
Remove
screws
from
shunting
braids
(
5
)
.
3
.
Remove
pin
(
3
)
freeing
the
sta
-
s
^
^
-
dtionary
contacts
and
springs
(
22
)
.
4
.
Install
new
springs
and
station
-
2
.
Remove
screws
(
27
)
and
remove
bracket which holds
pin
(
24
)
in
place
.
5
.
Adjust
contact
wipe
and
pres
-
(
See
ADJUSTING
CONTACT
sure
.
WIPE
AND
PRESSURE
.
)
3
.
Remove
main
-
and
intermediate
-
contact
stop
(
20
A
)
which
holds
the lower
part
of
stationary
contact
.
Removal
will
be
facilitated
if
the
force
on
the
contact
springs
(
21
)
is
neutralized
.
This
can
be
accomplished
by
operat
-
ing
the
breaker
with
the
maintenance
handle
,
with the
safety
pin
in
place
,
until
the
load
on
the
contact
stop
is
relieved
.
Movable
Arcing
Contacts
(
Fig
.
6
)
The
movable
arcing
contacts
(
4
)
should
be
replaced
when the
stationary
arcing
contacts
are
replaced
.
1
.
Separate
the
front frame
from
the
back
frame
as
described
under
SEPA
-
RATION OF
FRONT
AND
REAR
FRAMES
.
4
.
Loosen
the
hardware which
fastens
the
upper
stud
to
the
pole
unit
base
until
the
contact
-
spring
load
on
pin
(
24
)
is
relieved
.
5
.
Remove
pin
(
24
)
and
screws
(
26
)
and
lift
out
contacts
.
2
.
Remove
pins
(
8
)
and
(
19
)
and
withdraw the
contacts
.
3
,
Reassemble
parts
in
reverse
order
.
Stationary
,
Intermediate and
Main
Contacts
(
Fig
.
6
)
1
.
Remove
stationary
arcing
con
-
6
.
Reassemble
contacts
in
reverse
order
,
being
careful
to
replace
the
intermediate
contact
in
the
proper
£
4
i
-
i
_
Courtesy of NationalSwitchgear.com

GE AK-50 Specifications

General

Brand	GE
Model	AK-50
Category	Circuit breakers
Language	English