N
Installation and Operation
of
Type
AK
Power Circuit
Breakers
GEK-7302
1. The Connected
Position
~
the breaker in
the operating position, both
primary
and
secondary contacts
made
and
the
door
may be closed.
2. The
Test
Position A
th0prhnary(power)
contacts not made but the secondary·
(control) contacts
are
made.
Any
breaker
test
not involving power maybe
made
in
this
position.
The
door
may
be
closed
in
this
position.
3.
Disconnect Position m neither the
pri~
mary nor the secondary contacts made.
The door may be closed,
4. Fully Withdrawn Position
~
the
breaker
completely out
of
tts compartment ready
for
removal
from
the
inner
housing, The
door must· be open in this position.
Breaker
Insertion
AK-2A/3A
~
With
the
in-
ner
hoitsing in the connected position
pro~
ceed
as
follows:
1.
Insert
handle on
jackscrew
shaft located
on left hand side
of
compartment right
above indicator.
2. Rotate handle counter clockwise until
jacltscrew
is
stopped. (Indicator should
read
DISC),
..
TERMINAi.
BOARDS
CLOSING
VOLTAGE
SOURCE
3.
Remove handle and open compartment
door.
Fig.
1
(Front
View)
4.
Rotate the
two
track
lock links and
pull the right
track
to
the
limit
of
its travel.
15.
Using a lifting device,
raise
the break-
er
until the
breakers
mounting pins
are
approximately one inch above the
tracks.
...
·.
6. Pull the remaining
track
out to the
limit
of
its
travel
and lower
breaker
so the
breaker
mounting pins drop into
the slots in the track. Remove the
lilting
device,
7.
Push
the
breaker
in
against the
track
stops
•..
Rotate
the
two
track
lock
linlcs
to lock the breaker
in
place. Close
the compartment door.
NO'l'E: When moving a
breaker
from
one position
to another, be
sure
breaker
is
tripped_ open •
8.
Insert
handle
on
jackscrew shaft and
rotate clockwise
to move
breaker
into
the compartment.
Breaker
is
in con
...
nected Position when jackscrew can
no
NOTEcWHEN
SEPARATE
STA.
SEC.
PWR
SOURCE
fOR
DISCONNECTS
A
CLOi;ING
IS
C
\
usm
OMIT
I
JUMPERS
7
REMOTE
"""
Al-A3 &
o--»-o
CLOSE
~o
A2·A4,
~
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~
THEN
CON-
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NECT
PWA,0-,,,:2.o
o
0
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TO
Al
&A2
4
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c-:,.r-o
u
3
tJ
~MOTE
TRIP
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o.
a:
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--c::ll-1
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/
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FUSES
B
'"--.
/~-
D
o-l::d'
v-
~l-<>
o-~<E--o
6~&N~~~lf,
~~
~<--0
REQUIRED
~>2-o
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cry.ft-0
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~
o~<:-O
0-.J=-o
~-
0-,J-0
longer be rotated. (Indicator should
read
CONN),
Breaker Insertion AK·4A/5A - With the
Tuner
hoUslng
in the connected position,
proceed
as
follows:
1.
Open
door
and
remove wooden wedge
in the lower guide slot
of
the inner
housing.
2.
Pull inner housing forward
as
far
as
possible,
Fig.
2
Front
View
J\K-15
end 25
Breaker
Compartment
Fig.
3
Front
View
AK~50
1
75
1
100
Breaker
Compartment
5
Courtesy of NationalSwitchgear.com
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