GE AK-1-15 Series User manual

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INSTRUCTION
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AIR
CIRCUIT
BREAKERS
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Typos
AK
-
l
-
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lS
and
AK
-
1
-
25
Electrically
Operated
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SWITCHGEAR
DEPARTMENT
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GENERAL
ELECTRIC
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PHILADELPHIA
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Courtesy of NationalSwitchgear.com

PAGE
.
03
'
Lt
c
/
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o
gui
CONTENTS
PAGE
INTRODUCTION
RECEIVING
,
HANDLING
AND
STORAGE
INSTALLATION
LOCATION
’
MOUNTING
'
'
CONNECTIONS
OPERATION
MANUAL
ELECTRICAL
. .
.
.
.
.
..
.
8
3
4
i
4
4
6
6
C
MAINTENANCE
.
.
INSPECTION
Tools
,
LubrioattOn
.
.
Trouble
Shooting
.
,
BASIC
BREAKER
COMPONENTS
ARC
QUENCHER
.
POLE
UNIT
ASSEMBLY
OPERATING
MECHANISM
.
.
.
AUXILIARY
SWITCH
ELECTRICAL
CLOSING
DKVICES
AND
CONTROLS
6
*
4
0
t
7
7
«
r
L
7
.
J
i
9
S
’
9
9
12
17
17
i
»
PROTECTIVE
DEVICES
TIME
DELAY
UNDERVOLTAGE
TRIPPING
DEVICE
,
.
,
INSTANTANEOUS
UNDERVOLTAGE
TRIPPING
DEVICE
SERIES
OVERCURRENT
TRIPPING
DEVICE
REVERSE
CURRENT
TRIPPING
DEVICE
19
20
20
n
u
SF
MISCELLANEOUS
SHUNT
TRIPPING
DEVfcfe
,
BELL
ALARM
.
AND
LOCKOUT
DEVICES
u
.
.
.
.
.
.
.
.
.
GENERAL
PURPOSE
INDOOR
ENCLOSING
CASE
.
.
WEATHER
RESISTING
ENCLOSING
CASE
!
DRAWOUT
BREAKER
TYTK
AK
-
:
Uir
>
Tl
«
3
ANb
AK
*
l
-
2
m
4
BREAKER
RENEWAL
PARTS
*
u
«
0
ra
24
20
&
W
20
27
t
«
'
27
29
8
*
k
29
*
>
i
1
i
s
'
2
i
Courtesy of NationalSwitchgear.com

PAGE
04
“
tu
-
ru
W
W
I
W
V
W
J
.
f
I
/
/
WWW
"
I
F
'
AIR
CIRCUIT
BREAKERS
ELECTRICALLY
OPERATED
Ij
AK
-
lilS
-
3
THROUGH
AK
-
1
-
15
-
9
INTRODUCTION
rup
^
r
difference
in
the
upper
Mtud
and
later
-
AU
Of
theet
?
models
are
essentially
the
game
breaker
.
As
various
danign
Improvements
and
new
features
were
added
,
the
suffix
digit
of
the
type
number
was
progressively
Increased
,
Mainly
,
Changes
made
ware
of
A
very
minor
nature
.
These
are
tabulated
below
!
AK
-
1
-
15
/
25
-
3
Basic
model
AK
-
1
-
15
/
25
-
4
Improved
"
Y
"
relay
In
sole
-
noid
control
system
.
res
RATINGS
"
HIM
Continuous
Current
Rating
Interrupt
-
ing
Voltage
Breaker
Type
Rating
RMS
Amperes
'
^
-
TTYH
RMJ
3
Ampereis
AC
DC
AK
"
Jw
16
AK
-
l
-
lB
AK
-
I
-
lh
10
to
229
30
,
000
.
25
,
000
15
,
000
240
and
below
241
-
400
481
-
C
00
A
&
>
l
-
15
/
25
~
c
stationary
primary
disconnect
<
and
cable
clamp
raUmignod
,
(
Only
endowed
breakers
at
-
,
footed
*
)
.
AK
>
!
Ul
$
/
85
-
i
7
New
type
of
front
escutcheon
and
dosing
handle
,
Trip
but
-
ton
relocated
on
©
scutcheon
and
reset
lever
of
bell
alarm
and
lockout
breaker
#
changed
,
1302
overload
trip
device
used
Instead
of
the
KC
-
1
device
ex
-
cept
on
units
requiring
the
short
time
delay
feature
.
i
,
AK
-
l
-
15
/
2
Ii
-
B
New
drawout
frame
Introduced
.
15
to
2213
15
to
2215
200
AK
-
1
-
28
35
to
«
00
50
,
000
35
,
000
25
,
000
240
and
below
241
-
400
451
-
000
K
>
1
-
26
»
.
-
1
-
28
30
to
000
35
to
800
250
i
!
Those
circuit
breakers
are
generally
used
for
protection
and
control
of
apparatus
and
branch
circuits
,
Including
equipment
in
,
buildings
,
indus
-
tries
,
power
stations
and
for
inorbie
applications
within
the
ratings
designated
.
The
AK
-
1
-
15
and
AK
-
1
-
25
differ
in
that
the
AK
-
1
-
26
has
one
extra
contact
per
pole
with
cor
-
r
RECEIVING
,
.
HANDLING
Am
STORAGE
Immediately
upon
receipt
of
the
circuit
breaker
,
any
dirt
or
particles
of
packing
material
that
may
an
examination
should
be
made
for
any
damage
have
accumulated
on
the
breaker
parte
.
,
or
loss
sustained
In
transit
,
,
Jf
iniury
or
rough
}
handling
is
evident
,
a
damage
ertaim
should
bo
filed
at
once
with
tm
transportation
company
and
the
nearest
General
Kiefctrie
Solos
Office
should
be
promptly
notified
.
The
circuit
breaker
should
be
unpacked
as
possible
after
being
received
,
Caro
should
in
unpacking
to
avoid
damaging
any
of
tho
Be
sure
that
ho
loose
parte
are
missing
or
left
in
the
patting
malarial
.
Blow
out
If
the
circuit
breaker
is
not
installed
at
once
,
it
should
be
stared
in
a
clean
dry
place
and
pre
-
ferably
placed
in
;
a
vertical
position
.
It
should
be
pnorted
to
prevent
bending
of
studs
or
damage
the
breaker
parts
.
It
is
advisable
not
to
cover
the
breaker
with
any
packing
or
oilier
material
that
absorbs
moisture
which
may
cause
corrosion
of
breaker
parts
.
i
A
covering
of
paper
will
prevent
dust
*
from
settling
on
the
breaker
parts
.
ffU
to
soon
as
be
used
breaker
ports
.
7
/
twe
Wrucffcwu
do
sot
juwporf
to
cover
off
detoff
?
or
vorfof
/
orw
h
cqvipnmt
nor
tv
provkfo
for
every
fxwfbfo
contingency
to
be
me
*
m
connection
with
fnsfaffafiom
,
opmrtion
or
maintenance
*
$
!
joo
#
d
further
/
nfonmrfksi
be
dey
/
red
iw
diouk
/
parikutar
prob
/
emi
ariie
which
are
not
covered
nuffidantfy
for
the
pUmttfw
'
f
parptweit
,
the
matter
fthooJd
be
referred
to
ttw
»
Gemrttff
Vi
+
drk
Company
,
1
3
Courtesy of NationalSwitchgear.com

PAGE
05
4
OHO
UW
I
u
?
{
t
,
w
*
t
GKH
-
1807
Air
Circuit
Breaker
Typo
AK
-
1
-
16
and
AIM
-
2
6
INSTALLATION
©
.
Before
being
rtlpfMXl
,
*
U
broker
adjustments
imd
setting
*
have
been
carefully
made
and
checked
bv
experienced
factory
personnel
.
At
the
.
time
W
motkliaiiou
^
it
should
only
be
necoBeary
to
observe
the
operation
of
the
breaker
to
eetafolliwh
that
no
unobservable
damage
has
occurred duxlnr
ohlpmenL
*
LOCATION
The
air
circuit
breaker
should
be Installed
In
a
clean
dry
place
where
it
.
in
readily
accessible
tor
operation
,
inspection
and
proper
maintenance
.
Special
enclosures
are
available
for
the
inataUa
-
Uon
of
circuit
breakers
which
may
be
subjected
to
dust
and
moisture
or
other
unfavorable
locations
!
.
MOUNTING
DEAD
FRONT
BREAKERS
2
.
Remove
two
bolts
haloing
breaker
in
place
.
3
.
Remove
breaker
,
4
.
Mount
case
.
B
,
Make
power
,
control
and
ground
noctWms
,
d
,
Install
breaker
in
case
and
replace
two
mounting
bolts
and
enclosure
cover
,
(
b
)
Weather
Resisting
1
.
Opun
enclosing
case
door
,
2
.
Withdraw
breaker
(
sec
"
Weather
Re
-
sisting
Endowing
Case
"
)
,
3
»
Mount
case
.
4
.
Make
power
,
control
and
ground
eon
*
neotiona
,
6
,
Insert
breaker
(
see
"
Weather
Resist
-
ing
Enclosing
Case
"
)
,
con
-
BONNKCTION
*
Dead
front
circuit
,
breakers
are
designed
for
mounting
In
a
Switchboard
or
an
enclosing
case
.
The
connections
to
the
circuit
breaker
studs
mounting
of
«
foad
front
brettkers
consists
in
should
be
firmly
clamped
or
bolted
In
place
to
placing
the
breakers
within
tee
enclosed
structure
prevent
excessive
heating
.
The
connecting
cables
win
connecting
tee
power
buses
or
cables and
rank
-
or
bus
bara
should
have
a
current
-
carrying
capac
-
ing
the
necessary
control
conneettone
.
The
standard
lty
sufficient
to
limit
their
temperature
rise
to
mounting
depth
from
tee
back
nurfaec
of
tee
breaker
that
specified
for
the
breakers
.
If
these
connecting
base
to
the
back
aid
?
of
the
front
panel
le
8
-
3
/
4
"
.
cables
or
bus
bars
are
not
of
sufficient
size
,
heat
will
bo
conducted
from
them
to
the
breaker
so
that
The
front
cover
of
dead
front
breakers
consists
tec
breaker
cannot
carry
normal
rated
current
.
Aft
'
her
of
a
hinged
doc
»
r
with
cut
-
out
or
a
plate
without
exceeding
tee
specified
temperature
rise
.
Wr
Xtcd
to
tlm
panel
.
Connecting
cables
or
bus
bars
stiould
brsupported
so
teat
the
breaker
studs
will
not
be
subjected
to
unnecessary
strains
.
The
,
A
terminal
board
on
the
right
side
of
the
reaker
is
used
for
making
various
control
con
-
nections
with
breaker
devices
.
An
auxiliary
switch
on
the
left
side
of
the
breaker
is
used
for
some
WIRING
DIAGRAM
control
connections
and
for
connecting
various
*
"
-
auxiliary
accessories
.
wiring
diagram
,
Fig
.
1
,
shows
a
typ
elementary
and
itypfoftl
connection
diagram
with
the
breaker
in
the
open
position
.
When
normal
voltage
is
supplied
to
the control
circuit
,
either
by
closing
a
remote
switch
or
by
preening
the
push
button
PB
,
the
closing
contactor
X
coll
will
become
energized
through
contacts
When
disconaectfi
,
Fig
.
28
,
jure
used
,
the
break
-
bb
(
1
-
2
)
and
Y
:
(
4
-
3
)
.
The
X
contacts
will
close
,
er
is
placed
against
the
panel
so
that
the
disconnects
sealing
in
the
X
cou
through
contact
X
(
1
-
2
)
and
fit
over
the
stationary
studs
to
which
the
power
energizing
the
breaker
closing
coil
through
contacts
sflk
circuits
are
connected
.
Four
1
/
i
!
"
mounting
bolte
X
(
3
-
4
)
,
X
(
8
~
3
)
i
;
and
X
0
-
8
)
.
The breaker
will
than
w
'
are
teen
inserted
into
tee
holes
for
bolting
the
close
,
thereby
opening
the bb
contact
and
closing
breaker
to
the
pan
®
!
,
When
disconnects
fixe
not
the
aft
contact
,
of
the
prop
switch
,
Prop
switch
bb
used
,
the
power
circuits
are
bolted
'
,
to
tee
breaker
contact
will
open
tee
circuit
through
the
X
contactor
studs
after
bolting
tee
breakor
to
tea
panel
by
using
coil
,
thus
do
-
energising
the breaker
closing
coil
the
four
1
/
2
"
mounting
bolts
.
Breakers mounted
In
through
contacts
X
(
8
-
4
)
,
X
(
8
-
6
)
,
and
X
(
7
-
8
)
.
drawouts
or
an
enclosing
case
(
see
below
)
are
Prop
switch
aa
contact
will
cause
tee
permissive
equipped
with
disconnects
.
relay
Y
coll
to
become
energized
providing
contact
is
maintained
on
the
closing
switch
.
The
Y
relay
ENCLOSED
BREAKER
will
also
open
the
circuit
of
tee
X
contactor
coll
,
thereby
providing
an
anti
-
pump
feature
.
Hie
enclosed
air
circuit
breaker
is
shipped
in
,
_
.
. .
,,
,
.
.
.
„
an
enclosing
cage
.
To
install
the
enclosed
breaker
,
Operating
tee
remote
trip
switch
with
the
*
oceed
ns
follows
;
breaker
closing
will
cause
the
shunt
trip
eoil
.
be
*
,
,
_
,
n
„
„
come
energized
and
Will
trip
the
breaker
.
The
trip
(
a
)
General
Purpose
Indoor
Impulse
is
interrupted
by
an
"
ft
"
contact
of
the
1
.
Remove
sever
from
enclosure
.
auxiliary
switch
.
;
The
leal
The
structural
xmrface
to
’
which
the
breaker
U
\
bolted
must
be
flat
through
-
out
mid
the
supporting
structure
uuuflt
be
of
eumcient
strength
to
nold the
breaker
firmly
in
place
*
Minimum
cut
-
out
dimen
*
slons
muet
be
maintained
in
order
lo have
propftr
electrical
clearance
*
i
Courtesy of NationalSwitchgear.com

r
WIG
.
Air
Circuit
Breakers
Type
AK
-
l
-
lO
and
AK
-
1
-
26
OKH
-
IOOT
I
NOTTS
WHEN
SKMRATK
POWER
SOURCE
HW
CLOSING
got
B
im
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JUMPERS
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POWER
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'
ti
-
TERMINAL
OOARD
-
LOOATEP
UNDER
-
A
.
F
-
ANTMTIMI
?
PERMISSIVE
RELAY
,
0
-
(
GO
-
bb
)
-
MECHANISM
SWITCH
*
-
r
5
¥
r
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I
u
X
TRIP
t
oiose
till
Hh
-
-
-
Bfc
AS
.
»
•
I
S
/
WK
.
W
.
«
«
«
»
«
M
-
OfM
-
SHONT
TRIP
DEVICE
.
N
-
WAp
SOLENOID
OLOSING
COIL
.
P
-
wVl
'
OLOBINO
SWITCH
ON
BREAKER
.
T
~
TRANSFORMER
.
K
>
;
lit
iwx
,
*
«
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it
*
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-
.
^
rx
*
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e
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=
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.
U
.
£
%
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'
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>
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fir
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*
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DliffrMMt
5
i
Courtesy of NationalSwitchgear.com

PAGE
07
.
VlfZffZm
4
!
(
H
5
H
-
1007
Air
Circuit
Breakers
Type
AK
-
1
-
18
and
AK
-
l
-
SB
I
i
OPERATION
SSI
^
S
F
|
0
a
;
«
«
us
>
"
ai
"
I
?
ir
£
HT
-
«
«
the
maintenance
handle
is
shown
In
Fig
.
8
,
Use
of
B
!
tho
handle
in
an
upside
-
down
position
can
result
in
'
damage
to
the
breaker
parts
and
should
be
avoided
,
i
If
die
escutcheon
(
9
)
Fig
.
S
has
been
removed
from
the
breaker
,
the
maintenance
handle
can
no
longer
be
used
.
However
,
the
breaker
still
may
be
closed
manually
by
inserting
a
screw
driver
In
the
position
shown
In
Figs
,
E
and
6
A
,
and
then
rotating
its
lumdlo
upwards
and
towards
the
roar
of
the
breakert
The
breaker
may
be
tripped
manually
by
mmm
of
the
trip
button
or
automatically
by
any
of
the
trip
devices
with
which
it
la
equipped
*
.
i
•
m
r
‘
l
t
•
•
a
ai
in
i
i
r
“
H
m
iM
*
ft
*
&
S
3
n
R
«
A
uii
'
ELECTRICAL
m
*
•
T
'
cn
K
iM
u
-
ttilh
[
s
;
I
The
breaker
1
^
cio
@
ed
elegtricaiiy
by
mew
o
:
t
a
push
button
,
located
on
fixe
front
of
the
breaker
,
or
by
a
remote
switch
.
When
the
closing
contact
is
pade
the
x
contactor
becomes
energized
,
thereby
closing
the
x
contacts
and
energizing
the
breaker
cloning
solenoid
,
which
causes
the
breaker
to
clone
,
the
breaker
closer
?
,
the
prop
switch
causes
the
-
breaker
closing
solenoid
to
be
de
-
energized
*
#
5
*
MAtNTfiM
&
hGE
HANDLE
Fig
,
2
:
Utc
#
lag
Breaker
With
Manual
Ntltitonanc
*
When
\
:
*
*
MAINTENANCE
Always
Inspect
the
breaker
alter
a
short
circuit
Current
lias
been
interrupted
.
At
the
time
of
periodic
inspection
,
the
following
chock
#
should
bo
made
after
the
breaker
has
been
do
-
onorgiv
.
cd
,
:
INSPECTION
BEFORE
INSPECTION
OR
ANY
MAINTE
-
NANCE
WORK
IS
DONE
,
BE
SURE
THAT
THE
BREAKER
IS
IN
THE
OPEN
POSITION
.
ALL
ELECTRICAL
POWER
,
BOTH
PRIMARY
AND
CON
-
TROL
SOURCES
,
SHOULD
ALSO
BE
DISCON
-
NECTED
.
Periodic
inspection
of
the
circuit
breaker
is
recommended
at
least
once
a
year
.
More
frequent
Inspections
are
recommended
,
if
severe
load
condi
-
tions
,
dust
,
moisture
,
or
other
unfavorable
condi
-
tions
exist
.
2
.
Electrically
operate
the
breaker
several
'
tunes
to
ascertain
whether
the
electrical
attaclimenta
are
functioning
properly
.
3
,
Arc
trencher
(
See
Section
Quencher
”
)
,
1
,
Manuu
check
f
on
"
Arc
4
,
Contact
condition
,
wipe
,
and
pressure
(
See
'
Section
ion
"
Pole
unit
Assembly
”
)
,
0
.
Latch
engagement
(
See
Adjustments
under
"
Operating
Mechanism
"
)
,
0
.
Overload
device
tripping
(
See
Adjustments
W
under
1
"
Series
Overcurrent
Tripping
Device
'
!
)
.
If
the
breaker
remains
open
or
closed
for
a
long
period
of
time
,
,
It
le
recommended
that
arrangements
be
made
to
open
and
close
it
several
times
in
succession
,
,
preferably
under
load
.
At
all
tliuee
It
Is
important
not
to
permit
pencil
lines
,
paint
,
oil
or
other
foreign
materials
to
remain
ion
the
insulating
surfaces
of
the
breaker
as
they
'
may
cause
low
resistance
between
points
of
different
,
potential
and
result
in
eventual
electrical
breakdown
.
H
6
Courtesy of NationalSwitchgear.com

;
j
PAGE
08
A
,
tr
Circuit
Breakers
Type
AK
-
I
-
15
and
AK
-
1
-
25
GEH
-
1807
TOOLS
5
/
8
"
8
/
8
"
H
/
3
SJ
»
.
0
/
1
flv
open
End
Wrench
•
sSEsVSKSSKSs
#
1
BUiiupa
Screw
Driver
Brtver
with
8
"
shaft
#
3
Phillips
Screw
Driver
JrRrtr
"
?
^
(
Short
)
Screw
Driver
2
Cre
?
^
wt
(
Lonij
Thin
)
Screw
Driver
K
.
30
G
Crescent
(
Standard
)
Screw
Driver
H
-
28
8
"
Gas
Pliers
*
6
?
f
Fliers
$
JXaWee
£
arc
Pliers
Straight
f
#
2
Waldea
Truarc
PHcrs
9
(
r
&
an
V
/
W
AUen
Jie
»
d
wrench
for
{
§
l
-
nw
?
&
*
Allen
Bead
Wrench
for
#
10
Serov
i
/
8
Alkiii
Head
Wrench
for
1
/
4
"
Screw
5
/
10
’
Straight
shank
Allen
Head
Wrench
for
8
/
0
»
ecrerw
,
with
adapter
for
1
/
2
"
drive
ratchet
8
OK
*
Bail
pooh
hammer
5
/
0
H
8
point
open
box
wrench
3
/
0
"
Spintite
*
lg
-
lc
Ratchet
Socket
Wrench
1
/
2
"
7
/
i
8
n
-
1
/
2
"
Drive
Socket
9
/
16
»
•
5
/
8
»
LUBRICATION
Drive
.
:
-
.
V
?
H
Drive
Socket
~
1
/
2
"
Drive
Socket
3
/
4
»
~
1
/
2
»
Drive
Socket
13
/
10
»
-
1
/
2
»
Drive
Socket
16
/
16
"
,
-
1
/
2
"
Driver
Socket
10
"
Extension
Bar
1
/
2
"
Drive
6
"
Extension
Bar
1
/
2
"
Drive
In
general
,
the
circuit
breaker
requires
moderate
lubrication
.
Bearing
points
and
latch
Surfaces
should
;
be
Lubricated
at
the
regular
in
-
spection
periods
with
a
thin
film
of
extreme
temperature
,
Mgh
^
preesure
.
light
grease
similar
to
*
E
,
Spec
*
NO
.
|
DB
0
J
9
L
15
,
Hardened
grease
and
dirt
should
be
remended
from
latch
and
bearing
surfaces
by
using
kerosene
,
ALL
EXCESS
LUBRICANT
SHOULD
BE
HEMOVED
WITH
A
CLEAN
CLOTH
IN
ORDER
TO
AVOID
ANY
ACCUMULATION
OF
DIRT
OR
DUST
*
O
8
"
.
Adjustable
End
Wrench
,
$
»
:
S
"
oSftJwSL
?
*
E
,
ul
Wra
,
ch
TROUBLE
SHOOTING
%
In
'
-
rr
*
i
•
.
TROUBLE
CAUSE
REMEDY
I
Overheating
Contacts
not
aligned
*
I
;
Adjust
contacts
-
j
i
Contacts
dirty
,
greasy
or
coated
with
dark
film
-
;
|
Clean
contact
#
,
;
is
Replace
contacts
.
Contacts
badly
burned
or
pitted
.
Current
carrying
surfaces
dirty
.
!
Clean
surfaces
of
current
carrying
porta
.
i
lighten
,
but
do
not
exceed
iclosUc
limit
of
bolts
or
fittings
,
•
Decrease
toad
,
rearrange
circuit
or
Install
larger
breaker
.
Provide
adequate
ventilation
.
Bolts
and
nubs
at
terminal
connections
not
tight
.
Current
in
Excess
of
breaker
rating
.
Excessive
ambient
temperature
.
Travel
of
tripping
device
docs
not
provide
positive
release
of
tripping
latch
,
Worn
or
damaged
trip
unit
parts
.
Binds
in
overload
device
.
’
fT
’
Pf
'
TTT
*
'
Rfc
-
adjuat
or
replace
trip
unit
.
Failure
to
Trip
»
Replace
trip
twit
Replace
overload
device
.
nrn
-
fwn
Change
adjustment
or
replace
with
higher
rated
device
.
Change
adjustment
or
replace
Mth
higher
rated
device
.
Overload
pick
-
up
too
low
.
Faleo
Tripping
Overload
time
-
setting
too
short
.
Replace
devi
.
ee
.
Re
-
aligu
and
adjust
attachments
*
Bind
in
Oyerload
device
.
Binding
in
attachments
preventing
resetting
of
latch
.
Chipped
or
worn
latch
*
Latch
out
of
Adjustment
.
Failure
to
Close
and
Latch
*
Replace
latch
.
Adjust
latch
.
r
+
v
*
"
*
“
1
T
-
'
vtr
I
7
:
i
Courtesy of NationalSwitchgear.com

\
rr
^
u
.
*
.
Uwfi
-
'
lO
07
i
Mr
Circuit
Breakers
Type
AK
-
l
-
16
ana
AK
-
l
-
SB
I
i
i
2
I
•
126
N
5
"
A
•
rt
,
*
.
6
~
7
—
9
-
icm
r
*
—
»
©
f
:
iTir
-
•
a
»
H
S
HrtlL
-
’
•
H
,
10
‘
T
“
v
o
o
I
(
I
I
I
L
'
rr
-
i
!
I
!
i
f
(
i
'
ft
4
i
v
~
^
^
l
I
i
§
!
TIWlWH
\
M
IE
1
WTW
$
13
/
J
•
\
t
21
.
Stud
22
.
ttovfehU
Ckmt
«
«
t
2
$
.
Fihmr
Str
*
^
SMI
.
Rear
Support
StftdL
H
«
m
«
125
$
.
P
&
1
*
Unit
16
.
ttairt
Sinait
17
.
Cap
IS
.
fttrAtlf
1
»
*
lMw
.
lmt
.
iR
*
Llhfe
20
,
Stationary
Owitaet
7
-
Operating
tyftCliiltilMt
B
«
Mtx
^
tiof
Itormr
IH
mx
9
.
Ftimt
Kscutdm
10
.
Ki
4
>
U
*
trip
Rut
ft
12
.
Stop
ttut
13
.
(
Eraiuurrant
Trip
Xjwlc
*
14
.
bow
*
Stud
15
.
Sari
»
«
Oil
1
*
Muffler
2
-
rnuidc
Barrier
3
.
Outaido
Harriot
4
.
Front
Op
5
.
CllRMp
6
.
Ptr
*
p
FI
®
,
$
Rifrtit
tIdo
Vim
/
of
Br
®
ak
«
r
:
;
.
s
!
:
I
i
r
Courtesy of NationalSwitchgear.com

-
J
«
u
i
rrvn
-
*
Air
Circuit
Breakers
Type
AK
-
X
-
XO
and
AK
-
1
-
25
TROUBLE
(
SHOOTING
GEH
-
1007
N
TROUBLE
CAUSE
REMEDY
Failure
to
Close
and
Latch
jissft
?
s
&
swsss
bearing
and
latoh
Mrium
,
Clpeini
?
:
nolenold
burned
out
,
Solenoid
control
device
not
fimcUontny
Replace
spring
.
Clean
bearing
and
latch
ffurfaccs
*
.
Replace
solenoid
coil
,
Ke
-
udjuat
or
replace
device
.
on
\
BASIC
©
REAKER
COMPONENTS
ARC
QUENCHER
J
contact
carrier
(
IB
)
with
a
spring
(
17
)
which
pro
-
vldes
continuous
contact
between
the
contact
arms
and
pin
(
IB
)
,
-
A
clamp
(
14
)
secures
pin
(
IB
)
to
the
contact
support
(
IB
)
,
A
flexible
connection
(
12
)
is
provided
to
prevent
pitting
at
thd
pivot
point
of
the
movable
contact
arms
when
carrying
high
moment
.
ibry
currents
.
T
-
The
movable
;
contact
assembly
is
connected
to
the
main
abaft
(
IB
)
,
Fig
,
3
,
by
an
insulating
link
(
7
)
for
operating
the
contact
*
when
the breaker
closes
*
A
definite
amount
of
contact
pressure
(
see
"
Mea
©
~
wring
Contact
Pressure
"
)
must
be exerted
by
the
movable
contacts
against
the
stationary
contact
©
.
A
definite
amotini
of
contact
wipe
,
or
the
distance
stationary
contacts
are
pushed
to
the
rear
by
the
movable
contacts
(
see
"
Measuring
Contact
wipe
"
)
,
must
recmlt
during
the
closing
operation
.
Both
contact
pressure
and
contact
wipe
should
be
checked
at
the
regular
inspection
period
*
-
Ja
arsfcf
?
,
ns
number
of
perforations
and
two
outside
barriers
(
]
}
)
without
perforation
.
?
,
a
«
well
aa
a
front
cap
(
4
)
and
a
rear
support
(
24
)
held
in
place
by
a
fiber
stop
(
23
)
*
A
damp (
5
)
is
attached
to
the
breaker
bane
by
two
bolts
.
Clamp
(
Si
)
hold
*
all
the
arc
quencher
“
•
nsemblioe
to
their
respective
pole
units
.
A
muf
-
fler
(
1
)
ia
located
on
top
of
the
compound
barriers
.
The
compound
harriers
and
the
muffler
,
together
with
the
slots
between
the
barrier
*
!
,
serve
to
ex
-
tinguish
the
arc
,
,
v
'
Tbfe
arc
quenchers
should
be
inspected
at
the
regular
iftspootion
period
and
partii
replaced
,
if
badly
burned
or
corroded
*
’
•
PLACEMENT
,
FIG
*
3
;
that
the
%
L
Remove
clammy
(
6
)
by
removing
two
bolta
,
,
)
2
»
Unclasp
fiber
strap
(
23
)
,
'
3
,
Remove
front
Cap
(
4
)
,
muffler
(
1
)
,
outside
barriers
(
3
)
,
inside
barriers
(
2
)
and
rear
support
(
24
)
,
4
*
Install
new
or
disassembled
parts
hi
re
-
verse
order
*
MEASURING
CONTACT
PRESSURE
,
FIG
.
0
1
.
Romove
arc
quencher
.
(
gee
"
Replacements
"
under
Arc
Quencher
)
.
2
.
Place
a
push
-
typo
scale
against
the
upper
end
of
m
<
)
stationary
contact
tip
(
3
)
with
the
breaker
closed
.
3
.
Exert
pressure
against
the
push
-
typo
scale
until
the
contacts
Just
part
.
When
the
con
-
part
ithe
scale
should
register
between
0
pounds
,
4
.
Re
-
assemble
parts
In
reverse
order
.
NOTE
:
In
re
-
assembling
the
rear
support
(
24
)
to
the
breaker
,
be
sure
and
push
the
rear
support
toward
the
top
of
the
.
pole
unit
so
that
the
clearance
in
the
rear
support
will
accommodate
the
screw
-
head
of
the
back
plate
.
tacts
4
and
MEASURING
CONTACT
'
WIRE
,
FIG
.
6
POLE
UNIT
ASSEMBLY
The
contact
assembly
of
each
pole
unit
con
-
sists
of
a
stationary
and
a
movable
contact
sub
-
,
assembly
.
Refer
to
Fig
.
0
.
1
.
Remove
(
trie
quencher
(
see
’
’
Replacements
’
4
under
Arc
Quencher
)
.
,
it
,
,
,
2
.
Measure
ti
.
tie
dimension
between
the
inside
surface
of
the
pole
base
and
the
top
edge
of
stationary
contact
Up
(
3
)
,
(
a
)
with
the
breaker
open
,
(
b
)
with
the
breaker
closed
.
3
.
The
difference
,
between
ibese
Wo
Measure
-
ments
should
be
within
the
limits
of
3
/
32
and
1
/
4
"
.
'
If
not
within
this
range
,
the
con
-
tact
wipe
;
adust
be
adjusted
.
4
.
With
the
breaker
closed
,
the
.
stationarycon
-
tacts
should
have
a
minimum
of
1
/
16
overtravel
,
measured
at
the
contact
tips
,
before
reaching
the
limit
of
their
movement
in
the
direction
of
closing
.
t
>
,
Replace
arc
quencher
,
stationary
contact
assembly
consisin
of
araliel
contact
fingers
(
3
)
with
silver
alloy
tips
,
0
.
upper
stud
(
20
)
and
nine
(
4
)
with
comprenalon
springs
(
lfl
)
which
provide
continuous
contact
pres
-
sure
between
the
contact
finger
*
*
smd
the
upper
stud
(
20
)
.
A
shunt
(
21
)
IS
used
to
prevent
,
pitting
at
the
pivot
point
of
the
stationary
fingers
when
carrying
high
momentary
currents
,
,
The
station
-
ary
conWt
fingers
are
held
in
place
by
the
upper
>
A
cap
(
6
)
.
The
movable
contact
assembly
consist
®
of
parallel
contact
arms
(
S
)
with
sliver
alloy
tips
,
a
The
the
B
9
Courtesy of NationalSwitchgear.com

r
fvat
.
i
l
GEB
-
1007
Air
Circuit
Breakers
Typo
AK
-
1
-
3.5
and
AK
-
1
-
23
ADJUSTING
CONTACT
WIPE
AND
CONTACT
PRESSURE
,
FIG
.
G
G
.
Remove
Insulating
link
(
7
)
by
removing
tru
-
aro
and
drifting
out
pin
(
11
)
,
A
7
.
Rernpvo
clamps
(
14
)
by
removing
fastening
57
*
hardware
.
0
*
Remove
series
coil
terminal
bolts
.
Movable
contact
unit
Is
now
free
and
may
be
removed
.
9
,
Breako
*
may
now
be
reassembled
with
new
contact
assembly
by
reversing
the
above
described
procedure
*
In
remounting
mech
-
anism
,
;
be
sure
that
dowels
in
mechanism
side
frames
are
well
seated
in
dowel
holes
in
the
pole
unit
bane
,
(
See
Fig
.
a
,
)
It
will
also
be
]
necessary
to
compress
the
opening
spring
and
cap
in
the
recess
In
the
mech
-
anism
glide
frame
in
order
to
obtain
clear
*
*
anoe
for
replacement
of
the
main
shaft
,
10
,
Check
contact
wipe
and
pressure
and
adjust
if
necessary
.
1
.
Remove
arc
quenchers
(
nee
'
’
Replacements
"
under
Arc
Quencher
)
*
2
.
Remove
tru
-
arc
retaining
ring
from
main
shaft
(
1
(
5
)
,
Fig
,
3
,
nearest
the
Insulating
link
and
contact
assembly
to
be
adjusted
,
3
.
Loosen
clamp
(
9
)
which
secures
eccentric
bushing
{
&
)
.
4
.
Turn
the
eccentric
bushing
in
the
Insulating
Unk
(
7
)
tJireby
.
moving
the
insulating
.
link
closer
or
farther
away
from
the
stationary
contacts
,
a
«
required
to
obtain
proper
wipe
*
h
.
Reassemble
porta
in
the
reverse
order
after
making
adjustments
,
NOTE
:
To
adjust
the
insulating
link
in
the
center
pole
unit
,
first
,
push
the
main
shaft
through
the
right
Iiand
insulating
link
and
into
the
center
Unk
a
$
described
in
item
2
and
3
above
.
Opening
spring
and
cap
will
drop
out
.
Adjust
center
in
-
sulating
link
as
described
in
item
4
above
,
He
*
assemble
ports
in
reverse
order
being
careful
to
replace
opening
spring
and
cap
in
their
proper
position
.
;
MEGJWYISM
MOU
^
NO
If
any
of
the
contacts
are
badly
corroded
or
pitted
,
thereby
making
It
impossible
to
adjust
for
proper
-
contact
pressure
'
or
contact
wipe
,
such
stationary
contacts
or
movable
contact
assemblies
Should
be
replaced
*
See
"
Replacement
*
"
below
.
If
the
proper
contact
pressure
does
not
exist
^
ep
the
wipe
is
within
its
limits
,
the
stationary
ntact
springs
must
be
replaced
.
’
'
^
PLACEMENTS
movable
Contact
Assembly
,
Fig
.
0
c
,
INTERLOCK
LEVEC
^
V
'
v
,
^
a
»
"
,
:
ay
.
u
:
V
HANDLE
-
•
SOCKET
r
,
‘
Kii
ArQ
Quencher
*
md
-
Handle
Socket
ftoActfftd
from
Dr
«
M
>
u
-
t
Breaker
X
*
Remove
arc
quenchers
(
see
"
Replacement
"
under
"
Arc
Quencher
"
)
,
2
.
Remove
main
shaft
from
breaker
by
re
-
moving
tru
-
arc
retainer
from
owe
end
and
pushing
abaft
through
insulating
links
(
7
)
.
As
shaft
clears
the
mechanism
side
frame
®
,
5
,
„
,
(
17
)
and
(
IS
)
Out
of
their
re
-
•
a
*
FI
H
>
*
m
«
o
s
•
>
rr
!
?
#
*
&
opening
springs
and
caps
3
,
will
probably
drop
cesses
in
the
side
frames
*
If
breaker
is
of
the
drawout
typo
,
handle
socket
,
Interlock
lever
,
bushing
and
nut
must
be
removed
on
side
from
which
the
main
shaft
,
is
to
be
removed
*
(
See
Figs
,
4
and
B
.
)
3
.
Remove
upper
mechanism
mounting
screws
(
refer
to
Fig
.
4
)
.
4
.
-
Loosen
lower
mechanism
mounting
screws
by
using
screw
driver
in
slot
provided
on
threaded
end
of
screw
which
projects
through
back
frame
of
breaker
*
(
See
Fig
,
7
.
)
5
*
Mechanism
and attached
components
may
now
be
lifted clear
of
the
breaker
*
n
breaker
is
of
the
drawout
type
,
movement
;
of
the
mechanism
will
be
somewhat
,
re
-
stricted
by
control
wires
.
There
will
be
enough
freedom
,
however
,
to
allow
dm
mech
-
anism
to
be
lifted
to
the
top
of
the
drawout
frame
,
whore
it
can
bo
secured
by
tying
*
(
Sue
Fig
*
6
.
)
the
va
I
.
•
Vu
.
Fig
.
MAIN
SHAI
?
T
11
fefii
'
<
?
ft
"
'
.
-
/
1
1
*
i
*
Wi
l
!
r
>
1
*
1
w
feff
’
i
"
V
»
nr
-
si
/
'
U
*
1
iRETAININ
^
iWfe
^
W
^
^
.
'
FI
«
.
5
taovsl
of
N
*
ln
Shaft
Urn
Drawout
Break
str
10
;
\
Courtesy of NationalSwitchgear.com

PAGE
09
Circuit
Breaker
®
Type
AK
-
1
-
15
and
AK
-
l
~
2
f
>
GEH
-
1807
L
Mr
u
?
22
2
u
\
21
A
n
'
"
J
,
-
.
,
20
3
Tim
!
A
>
H
=
FR
N
l
N
r
-
19
a
£
18
a
-
»
=
D
i
-
p
>
t
.
'
j
s
-
17
:
A
,
L
w
*
*
,
x
-
16
.
^
r
!
£
«
>
«
art
'
•
15
8
-
um
'
-
.
U
>
4
*
^
*
n
u
.
i
9
-
.
14
N
*
.
10
Hr
)
1
'
U
i
-
_
!
.
/
12
r
—
n
HE
3
J
)
13
:
1
jziiiSD
>
r
J
I
X
-
!
'
17
.
Stilus
18
.
Cbnt
*
ct
Carrier
19
.
frrifcift
20
*
Uppnr
Stud
21
K
Shunt
22
.
8
ttcl
rJLmtft
12
.
Flexible
&
>
rai
«
ttUu
»
&
Twimd
.
!
15
.
Low
?
*
stud
i
M
,
Ci
.
#
*
np
i
16
.
Pin
;
.
'
.
MS
,
Contact
Support
IL
Uplift
*
Stud
Cap
7
.
Imuiitinn
Link
B
.
Eccentric
Bundling
9
.
Cliwap
10
»
Screw
U
.
Pin
X
.
Pol
*
Unit
tt
*
«
e
2
,
Fiber
St
*
«
ni
3
,
Stationary
Gtmtvat
4
,
Omtuct
Pi
*
5
,
Movable
Contact
A
*
*
*
!
ri
0
i
,
e
Polo
Unit
Aestaskijr
11
i
Courtesy of NationalSwitchgear.com

rmc
.
i
GEH
-
1
C
07
Air
Circuit
Breakers
Typo
AIUl
-
15
and
AK
-
1
*
25
Stationary
Contact
(
8
)
Fig
,
4
0
DOWELS
1
,
Remove
arc
quencher
(
see
Replacements
"
under
Arc
Quencher
)
*
2
,
Remove
upper
stud
Cflp
(
f
!
>
)
by
removing
two
bolding
»
orew
»
T
3
,
3
?
ry
the
stationary
contact
(
3
)
from
upper
stud
(
20
)
*
On
CmtaidC
poles
,
thS
stationary
contacts
are
readily
accessible
*
On
the
center
polo
,
it
is
recommended
that
the
mechanism
bo
taken
off
the
breaker
to
facilitate
removal
of
the
contact
*
.
This
may
bo
done
by
following
stop
*
1
to
B
of
the
procedure
for
replacing
;
movable
contacts
*
4
,
Replace
the
new
stationary
contact
in
re
*
-
verse
order
,
(
It
may
be
necessary
to
tap
the
new
stationary
contact
into
placeoy
using
a
rawhide
mallet
)
.
5
,
Adjust
eoutact
wipe
and
contact
pressure
(
see
above
)
*
I
1
»
$
w
K
A
9
ffg
.
6
fhwovs
)
of
Stationary
Content
#
trip
devices
a
,
re
uejtu
&
ted
,
Lateh
adjusting
screw
(
9
)
limit
®
the
rotation
of
the
trip
fiilwift
(
12
)
and
thus
determine
!
!
the
Amount
of
latch
engagement
.
To
operate
i
the
breaker
mantutUy
pee
section
on
"
Operation
”
,
i
ADJUSTMENTS
,
FIG
.
JO
Latch
(
15
)
id
adjusted
to
provide
approximately
5
/
JW
"
engagement
between
latch
and
roller
(
6
)
,
To
adjust
for
proper
latch
engagement
,
follow
the
pro
-
cedure
described
below
:
1
.
loosen
Locknut
on
adjusting
screw
(
9
)
.
2
.
Hold
breaker
eontecte
in
a
position
in
which
the
movable
contacts
are
Just
touching
the
stationary
contacts
.
This
may
be
done
by
any
of
tlte
provided
means
of
manual
closing
,
3
.
Turn
down
adjusting
screw
(
9
)
until
breaker
«
trips
open
.
Normally
the
force
required
to
3
rotate
the
trip
shaft
is
small
enough
so
that
S
3
the
spring
on
the
buffer
paddle
(
10
)
is
not
noticeably
deflected
.
If
any
deflection
is
it
observed
!
|
While
turning
down
the
screw
,
back
off
screw
until
spring
returns
,
then
turn
w
down
Bedew
again
.
If
deflection
persists
,
w
check
trip
shaft
for
binds
.
E
4
.
Mark
position
of
5
.
Repeat
stops
2
and
f
rijj
*
7
Uoo
*
«
oinc
Lower
Mounting
Bolts
*
i
*
OPERATING
MECHANISM
WmiOUT
CLOSING
HANDLE
The
operating
uieclianlsm
,
see
.
Fig
.
10
,
Is
«
up
~
ported
between
two
molded
side
f
rames
in
front
Of
the
-
center
pole
unit
.
It
consists
of
a
toggle
linkage
(
19
)
,
crank
(
5
)
,
latch
(
IB
)
,
trip
shaft
(
12
)
,
roller
(
«
)
,
closing
links
(
1
)
,
and
armature
(
14
)
.
When
the
coil
(
a
)
ia
onorgisicd
it
pulls
armature
(
14
)
downward
,
which
,
through
closing
Zinks
(
1
)
,
causes
the
toggle
linkage
(
19
)
to
straighten
.
This
motion
causes
the
main
shaft
(
1
,
8
)
and
movable
contacts
to
move
to
the
closed
position
.
As
soon
a
the
toggle
linkage
is
straightened
the
prop
moves
on
top
of
prop
pin
(
20
)
and
roller
(
0
)
moves
on
latch
(
15
)
thereby
holding
the
mechanism
In
the
closed
position
.
Tlie
motion
of
the
prop
(
23
)
causes
switch
(
25
)
to
operate
,
thus
do
-
energteing
the
closing
coil
.
The
breaker
mechanism
is
tripped
by
rotating
the
trip
shaft
(
12
)
,
and
releasing
latch
(
15
)
which
toggle
linkage
to
collapse
,
tliereby
The
stop
nuto
(
13
)
should
be
adjusted
so
that
'
lowing
the
opening
springs
(
IV
)
to
push
the
main
there
is
appraidpmtely
.
1
/
16
"
clearance
between
jau
^
movable
C
<
:
mtacts
_
forward
to
the
open
the
bottom
Of
the
magnet
and
the
upper
stop
nut
.
position
.
Trip
latch
(
15
)
la
automatically
reset
This
will
restrict
linkage
movement
in
tripping
but
during
the
opening
operation
providing
none
of
the
allow
enough
movement
for
the
mechanism
to
reset
.
adjusting
screw
head
,
adjusting
screw
Axi
Won
.
"
!
j
6
.
U
adjusting
screw
is
in
tike
name
position
aa
it
was
in
;
tire
first
tripping
,
back
off
tiie
screw
9
*
UM
turni
?
AM
ttehtou
locknut
.
K
it
is
not
,
repeat
steps
ft
mi
$
until
a
constant
tripping
position
is
determined
before
back
*
*
ing
off
;
tlie
three
turns
and
locking
.
This
chock
it
?
necessary
to
avoid
a
false
netting
clue
to
accidental
tripping
*
7
.
Operate
the
breaker
electrically
times
to
I
make
sure
that
tlu
&
mechanism
functions
correctly
.
0
or
(
23
several
v
>
Courtesy of NationalSwitchgear.com

-
U
V
.
1
J
nVHL
-
.
Air
Circuit
Breakers
’
i
'
yjpo
AK
-
l
~
i
5
and
AK
>
3
U
28
GEH
|
-
1807
!
i
Opening
Springs
(
17
)
Fig
*
10
or
(
10
)
Fig
,
11
REFIACEMJENTS
,
FIG
*
10
;
;
V
;
schaniem
Opening
ftaringa
may
be
replaced
by
following
me
first
two
steps
of
the
procedure
for
replacing
1
,
Remove
arc
quenchers
(
see
"
Replacement
"
the
movable
contact
assembly
,
under
f
,
Aro
Quencher
0
)
*
'
2
-
Remove
escutcheon
(
4
)
r
3
,
If
breaker
is
supplied
with
a
terminal
block
,
dismount
block
by
removing
two
screws
in
back
which
fasten
it
to
the
(
supporting
bracket
.
4
.
Remove
shunt
trip
supporting
bracket
by
hiking
out
the
two
screws
which
fasten
it
to
the
mechanism
side
frame
.
The
nuts
for
these
screws
are
loosely
held
in
the
recesses
on
the
Inner
side
of
the
frame
*
If
breaker
is
su
>
implied
with
an
under
voltage
device
,
also
will
be
dismounted
nines
it
is
held
by
the
same
supporting
bracket
.
5
*
If
breaker
is
supplied
with
a
closing
switch
,
dismount
Switch
base
by
removing
two
screws
(
10
)
,
Fig
,
14
.
0
.
Remove
solenoid
control
device
7
,
Remove
X
contactor
and
.
Y
relay
together
,
first
removing
two
screws
securing
Y
relay
to
arm
which
projects
from
magnet
,
then
loosening
th
©
three
screws
which
fasten
the
X
contactor
to
the
supporting
arms
,
Roth
devices
can
then
removed
by
lifting
slightly
and
moving
towards
front
of
breaker
.
6
.
Remove
stop
nuts
from
armature
plunger
(
13
)
,
Fig
.
10
,
.
9
.
Remove
lower
section
of
magnet
and
closing
coil
by
taking
out
four
screws
(
7
)
*
10
,
Remove
upper
sectioti
of
magnet
by
taking
out
two
screws
which
fasten
it
to
media
-
nism
side
frames
*
(
See
Fig
,
(
I
)
.
11
-
Remove
auxiliary
switch
by
taking
out
bolt
(
1
)
and
screw
(
4
)
,
Fig
.
13
,
12
.
Remove
cutoff
switch
(
25
)
by
removing
lock
-
nuts
(
24
)
.
IB
.
Remove
tru
~
a
.
ro
smd
take
out
main
shaft
(
18
)
.
being
careful
not
to
lose
opsuing
spring
(
:
L
7
)
and
cap
which
may
pop
out
when
main
shaft
is
re
moved
.
14
.
Take
off
mecjhanteni
by
removing
mounting
screws
from
mechanism
frame
.
15
.
Mechanism
may
now
be
rplaced
ara
a
unit
or
disassembled
and
then
reassembled
with
new
parts
as
needled
,
16
.
Reassembly
of
the
breaker
is
accomplished
by
reversing
the
procedure
described
.
In
replacing
the
mechanism
,
make
sure
that
the
dowels
on
the
mecimnism
side
frames
are
properly
seated
in
the
dowel
holes
in
the
pole
unit
base
}
alno
that
tine
opening
springs
!
and
caps
are
positioned
properly
placing
the
main
shaft
17
.
Adjust
prop
switch
as
described
under
"
Ad
~
juBtamnte
0
in
“
Monoid
Control
System
*
’
and
check
operation
of
breaker
manually
and
electrically
.
tide
cover
.
s
3
*
*
»
r
?
*
510
-
8
01
fcPSQHniJflfl
Uppar
Section
of
Magnet
lr
WITH
CU
)
mm
HANDLE
,
FIG
.
n
i
The
electrically
operated
mechanism
equipped
with
a
manual
operating
lumdle
is
shown
In
Fig
,
11
.
This
mechanism
is
similar
to
the
one
furnished
without
an
optaiting
handle
with
the
following
ex
-
ceptions
:
j
a
.
There
iM
only
one
stop
nut
(
11
)
on
the
lower
end
of
(
he
rod
extending
from
the
armature
(
12
)
nhide
there
Is
no
need
to
provide
for
operatiwj
by
the
maintenance
handle
,
b
.
The
mechanism
which
is
furnished
with
an
operating
handle
contains
a
cam
support
(
7
)
and
cam
(
6
)
,
(
sec
Fig
,
11
)
,
whereas
the
v
,
meolmuifun
furnished
without
an
operating
NOTE
:
If
a
reasonable
amount
of
care
is
handle
oontniim
neither
of
these
parte
,
exercised
,
wiring
lead
connection
*
will
not
bo
|
f
overstressed
and
need
not
be
dteconncctod
in
the
The
sequence
for
electrical
operation
is
the
•
^
urse
of
the
disassembly
procedure
*
The
electrical
same
as
given
-
frir
the
mechanism
furnished
without
.
;
lessories
may
be
tied
up
out
of
the
way
of
the
an
operating
Ixancfle
*
(
Refer
to
the
second
paragraph
wpewitor
.
K
leads
*
xv
disconnected
.
,
they
should
be
under
*
"
Operating
tfechAntem
-
Without
Casing
marked
to
avoid
incorrect
reconnection
*
lihmdlH
-
'
•
1
&
whew
ro
-
•
13
Courtesy of NationalSwitchgear.com

\
•
PAGE
10
GEH
-
1807
Mr
Circuit
Brejtkere
*
Type
AK
-
X
-
45
and
AK
-
1
-
25
Adjustments
fci
addition
!
to
the
adjUBtmCftta
shown
tor
mecha
-
nisms
furnished
without
m
operating
handle
,
ad
-
justment
screw
(
26
)
must
ho
sot
for
proper
opera
-
tion
.
This
adjustment
is
satisfactory
If
the
screw
ia
sot
in
such
a
position
that
the
following
two
conditions
are
tonet
;
U
In
closing
,
there
mtist
be
enough
overtravel
of
the
mechanism
to
easily
allow
prop
(
22
)
to
move
on
pin
(
19
)
-
Fig
.
11
.
;
I
:
2
,
When
the
breaker
is
open
,
roller
(
B
)
must
clearly
!
be
free
of
contact
with
latch
(
13
)
.
Turning
the
operating
handle
(
5
)
In
the
clock
-
wise
direction
90
^
causes
a
roller
attached
to
the
;
:
vi
Miratbv
shaft
to
engage
cam
(
6
)
thereby
moving
.
ae
cam
support
(
V
)
toward
link
(
4
)
.
Bee
Fig
*
11
*
This
motion
straightens
the
operating
linkage
,
thereby
moving
the
main
shaft
(
17
)
and
movable
contacts
to
the
closed
position
*
prop
(
22
)
engaging
pin
(
19
)
and
latch
(
13
)
resting
on
roller
(
6
)
will
position
.
Rotating
pin
(
19
)
and
latch
(
13
)
resting
hold
the
contacts
in
the
closed
the
tripshaft
(
14
)
in
the
counter
-
iBlocfcwlse
direction
will
release
the
roller
(
ft
)
which
emmets
the
toggle
linkage
to
collapse
thereby
allowing
the
opening
springs
(
1
G
)
to
push
the
main
shaft
and
movable
contacts
forward
to
the
open
position
.
Trip
latch
(
13
)
is
automatically
reset
during
the
opening
operation
,
providing
none
of
tile
trip
devices
are
actuated
.
\
3
.
,
L
'
>
TG
,
8
(
E
.
w
/
88
84
$
JB
2
W
C
w
*
r
iiuM
^
,
l
1
JT
"
"
/
rir
%
»
—
.
,
—
-
20
"
r
—
|
9
—
48
^
-
.
xsw
*
*
-
*
;
*
1
l
:
.
J
prtjt
!
sj
?
S
5
SCSg
^
H
7
V
e
*
*
•
»
.
i
/
*
.
I
'
M
T
ft
\
|
2
'
vSCREW
H
CK
<
Spurn
O
X
,
w
?
u
~
1
ii
i
,
5
t
•
(
.
Nd
4
1
.
(
llotLin
fi
l
^
Unk
%
Cm
Kwtwjm
Spring
3
.
Rtold
Kin
Peat
4
.
ftffcuttfMMtfi
5
.
Crttnk
toiler
7
,
Scrtw
13
.
Stop
Ifctj
14
*
Armature
IJh
i
.
«
teh
r
:
|
16
-
W
&
eh
.
17
*
Op
4
rtli
^
l
5
(
Bp
*
taV
10
»
M
*
Irt
Swift
M
,
Tbmtl
*
tytnk
0
-
G
»
JJL
9
.
Trip
Shwft
Adj
.
Sorew
SO
.
Ikiffar
F
addin
11
*
T
*
ij
>
flhwft
tot
.
Spring
12
«
Trii
»
ttrnft
SO
,
Ha
21
.
StoatHt
Sprihg
22
*
Prop
Pin
23
,
Prop
24
.
l
^
pfcirMit
*
Switch
26
-
Sew
*
*
Flo
.
16
flfkoratlnu
Mochanlis
Without
Qperatieg
Handle
114
Courtesy of NationalSwitchgear.com

.
.
,,
*
*
’
(
<
iuuii
UQ
.
x
4
4
Ki
4
O
PAGE
11
•
r
Air
Circuit
Breakers
Type
AK
«
1
~
1
&
and
AK
-
l
-
25
GEH
-
1007
i
the
hbl
©
of
the
cam
support
so
.
that
the
roller
drops
behind
cam
(
u
)
,
Fig
,
11
.
5
,
Replace
the
tour
mounting
screw
®
to
secure
the
front
escutcheon
assembly
to
the
mech
^
mdsm
;
frame
*
i
Replacing
the
Operating
Handle
Replacements
•
i
The
replacement
of
parts
Jn
the
operating
mechanism
furnished
with
a
manual
handle
are
similar
to
those
for
the
mechanism
funxiBhdd
with
*
*
out
a
handle
,
with
the
following
additions
;
X
*
Bemeye
the
short
set
screw
from
the
tap
-
ped
hplo
in
the
operating
handle
.
2
,
Back
off
a
second
longer
set
screw
from
Urn
same
tapped
hole
until
It
1
»
moved
clear
of
the
!
shaft
.
8
,
M
forward
on
operating
handle
until
It
la
released
from
the
front
escutcheon
and
operating
shaft
*
4
.
Re
-
assemblc
operating
handle
to
trout
©
a
-
wtetoiott
and
operating
shaft
in
reverse
order
!
'
Front
Escutcheon
Assembly
1
.
Remove
four
mounting
screws
(
B
)
,
Fig
.
3
.
2
*
Now
pull
forward
on
AIwi
operating
handle
turning
and
tipping
the
front
escutcheon
slightly
until
dislodged
from
the
breaker
*
3
*
To
remount
the
front
escutcheon
assembly
,
first
,
hold
the
trip
shaft
in
a
trip
free
position
.
Then
pull
the
cam
support
,
(
7
)
Fig
.
11
,
slightly
forward
,
4
.
Insert
the
operating
shaft
and
roller
into
i
}
3
8
8
V
*
*
Kn
IW
9
"
Urn
10
o
lr
Gtaaihg
Link
2
*
Cm
JJtotum
Spring
3
*
Ifold
in
Peat
4
,
urn
5
.
Handle
&
C
*
m
14
-
THp
iOnaft
21
.
Prop
Pin
22
,
Prop
43
,
Locknut
H
MF
Switch
25
.
£
crtny
26
.
Adjusting
Screw
3
.
Holler
15
,
Cm
Foliar
Mb
CU
£
1
H
,
Stop
Ntat
12
,
AiMturo
13
r
Itpfech
17
,
Mftito
Shaft
Mh
foggl
#
Link
t
$
r
Pija
flD
-
kptias
i
;
IB
r
•
[
Courtesy of NationalSwitchgear.com

PAGE
14
4
U
40
UQir
VO
Ui
/
£
.
t
(
AOCIH
GEH
"
1807
Air
Circuit
BrtUcers
Type
AK
-
1
-
1
B
and
AK
-
I
-
2
iji
i
Addition
of
Olooing
Handle
If
it
IB
desired
to
add
a
manual
closing
handle
-
a
breaker
which
iw
not
furnished
with
originally
,
the
conversion
may
bo
made
by
following
the
procedure
below
-
Required
part
#
‘
Catalog
num
-
bers
may
be
obtained
by
reference
to
Renewal
Parts
Bulletin
GBP
-
3606
,
I
-
5
•
one
'
-
s
1
.
Follow
steps
1
to
14
of
procedure
for
re
-
placement
of
the
mechanism
.
15
,
After
mechanism
lias
been
removed
,
remove
rigid
mechanism
Hide
frame
by
removing
hardware
at
(
S
)
and
(
2
ft
)
,
Fig
*
10
,
abaft
attaolmtisutB
to
the
right
of
IJ
onism
,
and
the
trip
shaft
retaining
ring
,
3
r
The
toggle
linkage
and
armature
,
now
free
of
the
mechanism
aide
frames
,
may
bn
disassembled
and
yeas
nembled
with
the
parte
required
for
manual
operation
.
Return
spring
,
(
2
)
Fig
,
H
,
replaces
(
2
)
Fig
.
10
,
and
cam
support
,
(
7
)
Fig
.
l
%
t
is
added
to
linkage
assembly
.
Fig
,
11
ghowg
how
the
linkage
should
be
reassembled
,
4
.
Reassemble
mechanism
and
breaker
parts
with
exception
of
escutcheon
*
Cn
Mount
new
escutcheon
assembly
,
which
will
include
a
manual
operating
handle
,
accord
*
.
ing
to
the
directions
in
me
section
titled
"
WJTB
CIIOSING
HANDUS
,
,
r
under
"
Replace
-
w
«
,
*
-
*
r
—
*
5
n
*
«
2
all
U
‘
l
]
>
lo
moc
.
h
-
U
.
t
J
r
the
1
.
BtattonWry
ihriieftto
*
(
OfMKft
)
.
£
»
SfovfthjU
Indicator
(
Closed
)
3
,
Li
ink
A
,
Crunk
5
*
^
achfidi
.
«
M
mojito
"
*
-
Cu
Adjust
,
screw
,
(
30
)
Fig
.
n
,
aa
deacribwi
in
•
'
Adjiwtmcute
'
'
under
"
WITH
CLOSINGHAN
-
»
L
,
E
,
"
7
,
Check
manual
and
electrical
operation
of
breaker
.
j
Hgj
ii
Position
indicate
!
*
16
-
10
Br
*
N
10
N
W
W
1
u
*
|
4
«
^
*
"
-
<
6
STAGE
OF
SWITCH
SHOWING
BREAKER
IN
OPEN
POSITION
5
M
*
Contnett
14
.
*
b
*
1
$
,
4
<
»
4
X
6
r
merrier
9
,
Ctanftwt
Opting
10
-
Anna
U
*
Pin
12
,
Ossa
h
Itouatth
*
Belt
a
TU
MLt
3
,
Shaft
4
«
4
tor
«
w
5
,
ftofctw
*
U
*
T
»
r
fit
JM
,
PJftt
*
7
.
Top
Ctersr
3
.
4
A
*
Contacts
Flfl
*
18
Auxiliary
Cwltdi
16
Courtesy of NationalSwitchgear.com

PAGE
15
"
NJ
'
-
tW
|
UU
i
UO
W
4
.
(
4
.
r
(
-
iuu
’
1
=
Air
Circuit
Breaker
*
*
Type
AK
-
1
-
16
and
AK
>
l
-
25
GKH
-
ICOT
AUXILIARY
SWITCH
The
stationary
contacts
(
12
)
and
insulation
strip
(
13
)
are
attached
to
tt
>
c
closing
solenoid
by
IGUItE
13
bracket
(
ft
)
tind
screws
(
10
)
,
A
remote
closing
switch
may
i
be
used
to
close
the
circuit
of
the
The
auxiliary
switch
is
mounted
on
the
left
side
solenoid
control
system
,
thereby
energising
tlx
©
of
the
operating
mechanism
,
The
main
oli
&
ft
(
if
)
.
closing
solenoid
.
Fig
.
11
,
of
the
breaker
causen
crank
(
4
)
,
Fig
.
12
;
to
,
rotate
as
the
breaker
Opens
and
closes
.
The
cranlr
.
Adjustments
operates
toe
auxiliary
switch
shaft
(
8
)
,
Fig
.
IS
which
opens
and
closes
toe
"
A
and
,
Tb
"
contacts
of
the
The
closing
switch
requires
no
attention
,
other
switch
.
(
The
"
a
"
contacts
are
open
when
toe
breaker
than
cleaning
.
of
contact
occasionally
.
Is
open
;
the
"
b
"
contacts
are
closed
when
toe
breaker
J
1
B
Open
)
.
The
opening
and
closing
of
the
auxiliary
SOLENOID
CONTROL
SYSTEM
switch
contacts
is
determined
by
an
arrangement
of
cams
(
12
)
.
mounted
on
too
auxiliary
switch
shaft
(
3
)
.
The
top
terminals
(
if
the
switch
are
"
a
"
con
-
tacts
,
too
bottom
terminals
are
"
It
"
contacts
.
ADJUSTMENTS
,
FIG
.
13
The
contacts
of
gny
stage
may
be
changed
from
"
a
"
to
*
'
h
”
or
vioc
versa
,
If
chanpe
are
ttwiftd
to
the
operation
of
too
contacts
,
an
approved
drawing
of
the
cam
(
IS
)
arrangement
should
be
obtained
or
a
careful
sketch
made
,
a
*
.
1
;
)
Tills
system
connists
of
an
X
contactor
and
Y
relay
(
see
Fig
.
IB
)
which
are
located
on
the
left
side
of
toe
operating
’
mechanism
.
It
also
contains
switch
(
26
)
,
Fig
,
10
,
which
Is
located
in
the
it
Of
toe
operating
meclianism
(
looking
from
Tlie
sequence
of
operation
is
as
fellows
:
I
a
.
When
the
closing
switch
is
closed
,
the
coil
of
the
jX
contactor
becomes
energised
.
b
.
The
contacts
of
toe
X
contactor
make
,
sealing
Its
coll
in
and
also
energising
the
breaker
closing
cull
,
c
.
The
breaker
then
closes
and
latches
causing
the
fob
contact
of
toe
prop
switch
(
26
)
,
Fig
,
10
,
to
open
thereby
de
-
energbalng
toe
X
contactor
coll
and
the
breaker
closing
eoi
!
„
3
a
prop
:
top
front
the
front
)
.
In
order
to
change
an
.
"
a
"
contact
to
a
"
bn
contact
,
it
i
«
needtUKgry
to
remove
the
four
tie
bolt
*
(
2
)
ana
change
the
position
ext
the
particular
cam
00
hi
relation
to
the
aliaft
.
Con
-
tact
*
should
bo
cleaned
ooca
»
i
0
xmll
.
y
to
insure
prop
-
er
performance
.
HEPJLiACKMEWTS
,
FIG
*
13
NOTE
;
If
the
closing
switch
is
cloaed
while
1
*
Disconnect
all
leads
to
the
auxiliary
switch
,
the
breaker
in
the
cloeed
position
,
or
if
it
re
-
2
.
Remove
mounting
bolt
(
I
)
and
aorW
(
4
)
to
'
mains
cloned
itfter
the
,
breaker
closes
,
the
coil
of
remove
device
from
broaden
3
.
If
no
approved
sketch
of
the
cam
arrange
-
ment
is
available
,
remove
the
cad
plate
(
6
)
from
the
device
by
removing
the
four
tie
bolt
*
(
2
)
and
draw
a
'
sketch
of
the
position
of
the
particular
cam
in
relation
to
the
ohftft
4
s
Before
installing
the
new
device
,
see
that
the
cams
are
to
the
same
position
a
*
to
the
device
that
is
being
replaced
.
f
>
,
Install
the
new
device
In
reverse
order
*
tr
n
8
'
\
p
K
r
ELECTRICAL
CLOSING
DEVICES
ANU
CONTROLS
The
electrical
closing
devices
and
controls
consist
of
toe
following
:
a
.
Closing
Switch
b
.
Solenoid
Control
System
c
.
Closing
Solenoid
*
-
i
i
3
CLOSING
SWITCH
,
FIG
,
14
The
ctoeing
switch
to
located
in
.
toe
tower
rigid
hand
corner
of
toe
front
escutcheon
(
1
)
,
ft
*
MOT
ahIt
CfottfciKi
t
BfjwAnt
10
.
8
«
f
*
W
Ur
Ctofdbff
Mfiuaid
U
.
8
t
*
U
«
rtUMry
Ot
*
*
t
*
«
t
13
,
pckMiXatihn
Strip
I
*
tmnt
Itomt
&
mvi
2
»
tCttfeoin
^
rn
3
.
i
.
4
»
pivots
-
$
.
fufjh
ttiRtljon
'
6
.
-
7
.
UpAGftjr
A
push
button
ftrctondia
through
the
front
o
&
cutch
*
&
nd
is
supported
by
bracket
(
3
)
.
Spring
(
6
)
re
-
turns
the
puah
button
to
a
neutral
pooifion
niter
toe
*
movable
content
(
ft
)
lm
«
momtmterUy
engaged
.
UtatloiwLry
contecte
(
12
)
*
Two
retainers
(
2
)
and
‘
opacer
(
7
)
are
uned
to
hold
toe
movable
contact
in
place
.
eon
too
!
•
tyf
.
rt
eio
#
tefi
awlWi
17
•
i
Courtesy of NationalSwitchgear.com

7
v
.
:
,
r
.
y
W
W
I
4
k
"
f
~
f
f
MWW
"
W
.
VI
IV
*
Wfc
-
'
GEH
-
IOOV
Air
Circuit
Breakers
Typo
AK
-
1
-
15
And
AB
>
1
ho
Y
relay
wlU
become
energized
through
the
aui
'
Hact
oi
the
prop
switch
(
25
)
*
Fie
;
,
10
.
This
will
«
the
circuit
to
the
X
contactor
coil
,
thereby
preventing
the
X
.
contactor
from
operating
.
This
feature
makes
it
impossible
to
operate
the
closing
solenoid
when
the
breaker
in
already
closed
,
it
also
provides
lor
cut
-
oli
of
the
closing
solenoid
nud
anti
-
pump
operation
.
Adjustments
The
only
adjustment
required
for
thin
system
:
Ls
on
the
prop
switch
(
25
)
.
Fig
.
10
.
To
make
this
adjustment
proceed
as
follows
:
1
»
Pros
®
the
trip
button
in
the
front
of
the
breaker
.
2
,
Maintain
pressure
on
the
trip
button
and
at
the
same
time
close
the
breaker
with
the
maintenance
operating
handle
,
see
Fig
.
2
*
The
prop
switch
(
25
)
,
Fig
.
10
,
Should
opera
te
just
before
the
armature
(
14
)
,
Fig
.
W
,
rOAChes
the
end
of
its
stroke
,
To
pbtato
this
adjustment
move
the
prop
switch
toward
or
away
from
the
prop
(
23
)
,
Fig
.
10
.
Moving
the
switch
too
clo
«
ie
to
the
prop
can
result
m
damagp
to
the
switch
if
its
operating
button
Is
forced
to
travel
beyond
the
limit
,
of
its
movement
.
It
Is
also
possible
,
In
this
case
,
for
the
switch
not
to
toggle
when
the
breaker
closes
.
(
When
the
breaker
closes
,
the
prop
moves
away
from
the
switch
and
tike
button
J
e
extended
)
,
Tills
would
leave
the
bb
contacts
closed
with
the
breaker
cloned
,
and
burn
out
live
contactor
and
closing
solenoid
colls
.
K
,
on
tob
other
hand
,
toe
switch
is
too
far
away
from
to
©
prop
,
it
is
possible
for
toe
bb
com
-
tactu
to
remain
open
when
too
breaker
is
open
.
This
would
make
it
impossible
to
olo
»
©
too
breaker
electrically
,
nkis
condition
could
Tim
closing
1
solenoid
is
connected
in
series
also
resuit
in
false
tripping
even
though
the
with
toe
main
contacts
on
the
X
contactor
and
is
©
Witch
may
operate
,
since
the
thrust
of
too
energized
or
d
©
-
energized
when
these
contacts
are
switch
button
1
«
depended
upon
to
move
the
cloned
or
opened
,
respectively
.
When
the
closing
prop
into
position
and
hold
it
in
place
on
solenoid
la
enerteized
,
Its
armature
(
14
)
is
,
drawn
breaker
closing
operations
.
downward
into
the
coil
(
tl
)
pulling
the
four
Closing
links
(
1
)
in
the
Sam
©
direction
.
This
action
straightens
the
:
toggle
linkage
(
19
)
,
of
toe
operating
mechanism
,
thereby
dosing
the
breaker
,
As
toe
operating
mechanism
moves
into
the
closed
poei
*
tion
,
toe
prop
switch
(
28
)
operates
,
causing
toe
X
contactor
coll
iaud
breaker
closing
coil
(
8
)
to
be
de
-
energlisod
.
•
:
3
,
1
*
Mtjg
*
1
Y
Relay
3
.
Mtft
.
X
0
>
nt
*
*
tar
3
.
X
Contactor
4
*
T
Relay
j
Fig
-
1
®
X
(
tofttacter
and
Y
Replacement
*
X
Contactor
and
,
Y
Relay
,
Fig
,
16
1
,
Remove
cover
*
2
,
Dtecanned
wiring
,
3
-
Remove
two
screws
which
to
ten
Y
relay
to
upper
extetmkm
of
magnet
frame
,
4
.
Loosen
three
«
crftw
»
which
fasten
X
ooik
-
taotor
to
magnet
frame
extension
#
.
5
,
Replace
new
device
in
reverse
order
,
Prop
Switch
(
25
)
,
Fig
*
10
1
,
Remove
wiring
*
2
,
Remove
looknuta
(
24
)
from
switch
*
8
.
Replace
owitch
in
reverse
order
.
r
'
x
-
OSINO
JSOLJBJNOID
,
FIG
*
10
The
closing
note
no
id
As
located
directly
below
the
operating
tnochantem
.
It
conateta
of
a
coR
(
fl
)
.
a
magnet
,
an
armature
(
14
)
,
and
four
dealing
Uito
(
1
)
*
&
Adjustment
The
stop
niutj
(
18
)
Fig
.
10
,
should
be
Bet
BO
that
there
is
approxinitttely
l
/
liT
c
4
oarance
between
the
nut
and
the
m
&
ptat
when
the
brewer
its
in
the
open
powition
,
Thiu
adjustment
is
required
in
order
to
allow
the
mechanism
linteigc
to
react
.
Replacements
,
10
doping
Monoid
j
1
.
Remove
tec
X
contactor
and
Y
rela
"
Repl
&
eoteottts
"
rnxtier
Solenoid
Syatem
)
*
!
|
2
,
Remove
atop
nut
(
18
)
.
ay
tee
©
-
Q
Control
*
•
!
i
.
Courtesy of NationalSwitchgear.com

W
-
»
w
PAGE
03
Air
Circuit
Breaker
*
Ty
]
k
AE
-
l
^
lS
*
and
AK
-
1
-
K
5
GBli
«
tB
07
3
.
Remove
four
screws
(
7
)
which
attach
lower
Coll
(
8
)
»
Fig
.
40
part
of
magnet
to
upper
part
of
magnet
,
1
4
*
Remove
two
screws
wMch
attach
upper
part
of
magnet
to
the
two
side
frames
of
the
operating
:
mechanism
,
5
,
Install
new
closing
solenoid
in
reverse
order
. .
*
L
Remove
tower
member
of
magnet
,
(
see
"
Closing
Solenoid
"
under
"
Replacements
"
,
Rems
1
to
3
)
*
2
.
Remove
!
wiring
to
coil
(
ft
)
and
remove
coil
.
3
.
Remove
hr
ass
coil
guides
.
4
.
Install
hew
coil
in
reverse
order
.
PROTECTIVE
DEVICES
TIME
DELAY
-
UNDERVOi
.
TAaiE
TjtiPMNiG
.
DEVICE
AIOTSTMENTS
,
FIG
.
16
An
adjustijng
screw
(
20
)
in
the
trip
lever
in
used
to
allow
from
1
/
32
to
1
/
16
inch
overtmvel
alter
tripping
the
breaker
*
Adjusting
oerew
(
2
)
is
used
to
adjust
the
arma
-
ture
so
that
it
^
viU
pick
-
up
at
80
%
of
normal
voltage
and
drop
odt
between
30
%
and
60
%
of
normal
voltage
*
|
.
|
•
Adjusting
imt
(
ft
)
on
connecting
rod
(
11
)
is
in
-
tended
for
a
;
poinimum
amount
of
adjustment
of
the
time
delay
setting
.
From
1
/
4
to
8
/
8
inch
of
oil
should
bo
maintained
in
the
cylinder
at
all
times
*
In
order
to
auinopoctionoftheoil
,
the
cylinder
may
be
unearned
from
the
cap
*
G
.
JE
.
silicone
oil
&
9
olI
»
T
40
NV
or
similar
grade
should
be
used
in
the
cylinder
.
1
This
device
1
$
mounted
to
a
bracket
on
the
right
side
of
the
operating
mechanism
(
looking
from
Hie
front
)
*
The
purpose
of
this
device
in
to
trip
toe
breaker
for
imdervoltage
.
For
rated
vottoge
,
the
armature
<
$
)
k
attracted
by
magnet
(
14
)
.
K
the
voltage
falls
below
a
predetermined
value
the
magnet
(
14
)
releases
toe
armature
(
3
)
.
Spring
(
4
)
then
pulls
armature
(
8
)
upward
against
toe
restrain
*
tog
force
of
the
oil
to
Cylinder
(
Ip
)
;
this
action
causes
a
minimum
time
delay
of
8
seconds
*
When
the
spring
overcomes
(
he
restraining
force
of
the
oil
the
armature
engages
screw
(
20
)
thus
rotating
the
trip
shaft
and
opening
the
breaker
,
(
For
part
*
reference refer
to
Fig
.
1
(
h
)
i
23
-
nrniwn
’
fm
*
}
,
<
5
'
—
£
2
0
.
IJJ
o
21
\
_
£
S
=
4
„
£
X
'
SOT
"
A
k
kmm
2
20
o
l
o
o
3
o
o
4
o
oTo
o
2
o
o
3
o
~
d
£
~
o
4
o
-
-
d
|
1
—
050
0
J
30
s
19
3
“
"
r
18
tt
4
-
’
17
n
*
ti
«
v
'
*
0
a
-
5
r
-
Ki
6
-
—
^
m
HUM
1
-
w
t
*
a
H
r
*
5
rwr
*
7
U
.
8
I
5
-
o
-
o
0
9
-
p
16
I
-
10
t
o
«
RK
s
.
—
.
.
.
IMWI
*
B
O
>
2
12
ft
n
B
5
B
4
J
IS
14
13
J
uv
i
1
1
L
Brnttot
X
Adjufftin
#
Stafo
*
li
Wwt
3
*
Awfltur
#
4
.
Spring
St
{
fttuedtim
Riba
6
.
Hto
7
.
Clwi
*
3
-
Adjusting
NUt
9
.
Cwj
>
19
,
m
*
#
•
3
!
Qv
Ad
)
tt
*
tLa
®
Stet
*
w
»
31
.
Jfcuattiig
.
Efer
«
rwr
»
2
,
trk
IMA
*
ft
Ciiwp
23
,
&
vpparUn
#
Braefcat
ION
cyjLifxiar
H
,
tbunoctiun
IS
,
Cedi
IS
*
Scrtrfnij
•
It
,
fck
j
-
,
‘
18
.
Adju
»
|
it
|
hg
FIs
*
It
Tie
©
Msy
l
)
n
«
torveUa
&
8
Trlfwttagj
'
BevBea
H
*
BNWt
1
fed
12
*
Plumper
13
,
oU
«
tp
r
%
©
erew
'
;
Courtesy of NationalSwitchgear.com

ilZJSJL
.
•
r
'
TW
'
fW
PAGE
04
!
aEH
-
1807
Air
Circuit
Breakers
Type
AK
»
1
~
1
B
IHHI
AK
-
1
-
2
G
’
’
Drop
out
'
;
and
aubsaquent
tripping
of
Uw
breaker
is
a
ivnctiori
of
the
tonmion
of
ruffing
(
4
)
,
TM
#
in
a
factory
adjustment
.
It
should
,
necasaary
to
ever
react
tlda
adjustment
in
the
REPLACEMENTS
,
TO
.
10
&
not
be
Li
The
only
part
of
the
uadervolt
&
gedevice
that
in
field
,
likely
to
require
replacement
during
the
life
of
the
breaker
i
$
the
coil
(
lB
)
.
The
replAceimentprocedure
follows
;
INSTANTANEOUS
MNDEKVOLTAGE
TRIPPING
DEVICE
1
.
Disconnect
coll
leads
.
,
,
,
,
.
,
.
?
„
Remove
two
screws
(
10
)
*
freeing
magnet
This
uncle
rVoltage
tripping
device
la
constructed
(
14
)
and
coll
(
16
)
from
device
.
(
It
may
be
similarly
to
tile
Umo
delay
imdervoltagc
tripling
more
convenient
to
remove
the
entire
device
device
with
Lite
exception
th
&
t
the
cylinder
x
-
.
„
from
its
nupporting
bracket
(
23
)
before
plunger
(
12
)
,
connecting
rod
(
U
)
,
clevis
(
7
)
,
bracket
removing
the
magnet
and
coil
*
If
the
device
(
1
)
»
and
adjusting
nut
(
ft
)
,
afi
shown
In
Fig
.
10
are
is
of
the
time
-
delay
tvoe
.
bracket
U
)
will
omitted
,
also
have
to
be
remove
/
before
the
device
time
“
delay
type
,
bracket
(
l
)
will
to
bo
removed
from
bracket
(
3
J
;
8
)
,
)
3
.
Straighten
laminations
which
were
bent
to
lace
.
O
The
adjustments
and
replacements
for
this
device
arc
also
the
same
as
those
for
the
time
delay
uuderveltage
tripping
device
.
hold
shading
ring
(
5
)
in
i
>
4
.
Remove
shading
ring
(
Bj
*
5
.
Straighten
end
of
coil
clamp
(
13
)
*
6
.
Remove
coil
,
install
new
coil
*
and
assemble
device
by
reversing
disassembly
procedure
.
(
Note
;
-
It
is
advisable
to
re
*
place
,
the
taaguet
and
coil
assembly
ao
nearly
as
jjosstele
In
its
exact
original
position
in
relation
to
the
device
frame
.
Before
removing
the
magnet
,
note
or
mark
its
position
relative
to
the
frame
.
Doing
this
will
result
in
having
the
name
open
air
gap
between
armatur
e
and
magnet
and
Will
Insure
the
device
’
s
picking
up
at
the
same
voltage
value
)
*
SERIES
OVEItqURRJENT
TRIPPING
DEVICE
Thorn
arc
two
types
of
over
our
rent
trip
devices
Willi
which
the
1
breaker
may
be
equipped
.
These
arc
the
KOI
and
the
EC
-
2
devices
.
The
principal
difference
between
those
two
is
that
the
former
may
have
time
’
delay
characteristics
which
Include
a
short
;
time
Maly
.
The
hitter
IB
used
Only
for
long
time
delay
and
instantaneous
characteristics
,
or
combinations
'
of
those
two
.
For
a
description
ox
the
operation
;
and
adjustments
of
the
EC
-
2
device
,
refer
to
bxslructlem
Book
GEI
-
B
021
G
,
•
i
Each
series
overcurrent
tripping
device
is
enclosed
in
a
molded
case
and
mounted
by
three
screws
and
a
bracket
to
the
lower
part
of
the
polo
unit
base
.
.
#
device
if
the
entire
device
is
replaced
,
simply
remove
hardware
fastening
the
frame
of
the
device
to
supporting
bracket
(
23
)
.
if
a
time
-
delay
device
bracket
(
l
)
must
also
bo
removed
from
(
$
8
)
«
.
the
>
j
The
EC
-
j
-
lj
device
can
be
provided
with
the
following
tripping
combinations
}
ADJUSTMENTS
1
.
Long
time
delay
,
short
time
delay
and
instantaneous
tripping
.
2
.
X
<
png
time
and
snort
time
delay
tripping
only
.
.
>
8
.
Long
itjlmc
delay
and
huriantsmeoxm
tripping
-
4
.
Short
time
delay
and
instantaneous
tripping
*
5
.
Short
tiJm
delay
tripping
only
.
C
.
Instantonemw
tripping
,
(
a
)
’
Adjustable
:
(
b
;
!
Noimdjustablo
SHORT
TIME
BELAY
TRIPPING
,
FIG
.
17
When
the
armature
(
3
)
is
open
,
(
coil
deeper
-
it
must
push
the
trip
paddle
(
82
)
at
least
of
an
^
Inch
beyond
the
point
at
which
tee
breaker
tripe
.
This
may
be
checked
by
placing
a
1
/
32
"
feeler
gauge
between
the
armature
and
tee
head
of
screw
(
2
)
with
the
breaker
;
position
and
tee
ajr
maters
held
closed
against
the
magnet
When
the
armature
is
released
,
it
should
move
under
the
action
of
spring
(
4
)
just
far
enough
tc
;
trip
the
breatar
.
Tills
will
ensure
positive
tripping
of
tee
breaker
by
tiie
device
.
Adjustment
is
obtained
by
means
of
screw
(
20
)
which
may
be
advanced
towards
the
armature
or
retarded
.
88
»
In
the
closed
#
The
armature
(
7
)
is
retained
by
calibrating
spring
(
8
)
,
After
the
magnetic
force
,
produced
by
The
armature
pickup
point
is
a
function
of
tee
an
overcurrent
condition
,
overcomes
this
restrain
-
open
air
gap
of
the
armature
.
The
air
gap
is
set
;
by
tag
force
,
the
ifromturo
movement
is
further
means
of
adjusting
screw
(
2
)
*
This
gap
should
he
tainted
by
an
escapement
mechanism
which
produces
set
so
that
the
armature
will
"
pick
up
"
at
80
%
of
an
inverse
time
delay
characteristic
.
The
mocha
*
rated
voltage
*
In
order
to
check
tide
adjustment
,
a
nism
Is
shown
in
tec
left
side
view
of
Fig
,
17
.
variable
voltage
source
is
necessary
.
The
;
gap
.
;
Should
Jbe
inoreawed
if
"
pick
ujp
"
occurs
at
lmu
The
pickup
lor
tela
device
can
be
field
out
4
h
^
30
n
80
%
of
voltage
or
decreased
if
it
occurs
at
between
ftmlta
liaving
a
ratio
of
2
-
1
/
2
to
1
in
the
w
more
than
80
%
.
range
of
200
to
1000
%
Of
tte
coil
rating
*
20
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