GEt-86151B
CODE
A
(AKD-5/6
SWITCHGEAR)
(Fig.
2)
The drawout
mechanism
is
equipment
mounted and
is
externally
operated by
a removable
racking
handle. The
breaker
is
supported
bytwo
pins
protruding
from
each
side of
its frame, these engaging
slots
in telescoping
rails fastened
to the compartment
walls.
The drawout ooeration
features
four
positions
-
CON-
NECTED,
TESI
DISCONNECTED
and
WITHDRAWN.
In
the CONNECTED
position
the
primary
and secondary
dis-
connects are
fully engaged.
The breaker
must be tripped
before
it can be racked
into or out of this
position.
ln the TEST
position
the
primary
contacts are
disconnected
but the sec-
ondary
contacts
remain engaged.
This
allows complete
breaker
operation
without energizing
the
primary
circuit.
In
the
DISCONNECTED
position
neither
primary
nor
second-
ary contacts
are
made. Breakers can
be
racked between
these three
positions
with the compartment
door closed.
Each
position
is clearly
identified by a
rotary
indicator
visible
through an opening
in
the
door.
With the door open,
the
breaker
is manually
pulled
out
from
the DISCONNECTED
to
the
WITHDRAWN
position;
here the
breaker
is
completely
out of
its
compartment,
ready
for
re-
moval.
NOTE:
All
electrically operated
AKR-751100
breakers employ a
spring
discharge interlock
which
prevents
removal of the breaker with lfs c/os-
ing springs in the charged state.
Before the
breaker can
be moved away from
the
DISCON-
NECTED
position
toward the WITHDRAWN
posi-
tion, it is
necessary to depress and hold the
breaker-mounted spring discharge lever
(Fig.
2).
This discharges the closing springs
and
releases
the breaker.
Manually operated breakers
do
not require this interlock
because their closing
springs
are never
propped
in
the
fully
charged
position.
Refer to
the
"Manual
Closing" text on
page
't3.
Breaker
Insertion
(Code
A)
1.
Prior to
lifting
a breaker to
its intended
compartment
location,
observe
the following
precautions:
a.
Check
the compartment to insure
that it is free of
foreign objects.
b.
Verify that the breaker is the correct type for that
compartment.
c. lnsure that the breaker ls OPEN.
d. Apply a thin, fresh coat of
D50HD38 lubricant to
the
b
reake r's
p
ri m
ary
d i sconnects.
-.*4x:"*i.&,-*.*,*=."
.
BREAKER
MOUNTING
PINS
117/a"
SPRING
DISCHARGE
--
LEVER
7
Fig.2 AKR-5A-75 electrically
operated
(AKD-S,
6 type)
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