Eaton Cutter-Hammer SPB-50 - Page 19

I
.
B
.
29
-
801
C
Page
13
fftyoWG
Disconnect
Test
Connected
Slot
Slot
Slot
OO
1
+
5
t
Indexing
Lever
Lever
Block
z
T
Breaker
Indexing
Bracket
Figure
4
-
4
Ratchet
and
Socket Shown
in
Operation
Position
(
Breaker
Deadfront
Removed
for
Clarity
)
Figure
4
-
3
Operation
Schematic
of
Indexing
Bracket
and
Lever
A
deadfront
shield
is
installed
on
the
breaker
with
the
matching
pieces
in
the
cell
to
protect
the
operator
,
should the breaker
be
operated
in
the
“
CONNECTED
”
position
with
the
cell door
open
.
4
-
2.1
MOVING
BREAKER
FROM
WITHDRAWN
TO
DISCONNECT
POSITION
To
move
the
breaker
from
the
“
WITHDRAWN
”
position
at
the
end
of
the extension
rails
to
the
“
DISCONNECT
'
position
,
push
the
breaker
back
on
the
rails
until the
lever
block
drops
into the
disconnect slot
.
This is the
one
and
only
time
that
the
index
lever need
not
be
lifted
prior
to
a
breaker
racking
operation
.
In
this
case
,
the
lever
cams
up
and down
automatically
.
At
this time the
extension
rails
can
be
pushed
to
the stored
position
.
The
shield
attached
to
the breaker
should
be
installed
when the breaker
is
placed
in
the
“
DISCONNECT
’
posi
-
tion
prior
to
its
being
racked into the
“
TEST
’
position
.
If
rotation
of
the
breaker
for
inspection
is
desired
,
the
shield should be
removed
in
the
“
DISCONNECT
’
posi
-
tion
prior
to
the
breaker
being
pulled
into the
“
WITH
-
DRAWN
”
position
.
To
move
the
breaker
from
“
TEST
’
to
“
CONNECTED
,
”
repeat
the
procedure
of
lifting
the
indexing
(
ever
to
its
uppermost
position
and
move
the
ratchet clockwise
.
Be
certain
to
hold
the
indexing
lever
up
until the
lever
block
has
cleared
the
test
slot
.
4
-
2.2
MOVING
BREAKER
BETWEEN
DISCONNECT
,
TEST
,
AND
CONNECTED
POSITIONS
To
move
the breaker
from
the
“
DISCONNECT
”
to
the
“
TEST
'
position
,
lift
the
indexing
lever
to
its
uppermost
position
so
that
the lever
block
will
clear
the
indexing
bracket
.
It
is
very
important
to
always
lift
the
indexing
lever
to
its
uppermost
position
when
moving
from
one
position
to
another
.
Move
the
ratchet
clockwise
(
Figure
4
-
4
)
.
After
the
lever
block
has
cleared
,
the
indexing
lever
can
be released
.
When
it
drops
into
the
next
posi
-
tion
,
the
breaker
is
in
the
‘
TEST
’
position
(
Figure
4
-
2
)
.
When
the
slot
has
been
cleared
,
you
can
release
the
lever
.
When
it
drops
into
the
next
position
,
the
breaker
is
in
the
“
CONNECTED
"
position
.
Self
-
aligning
contact
posts
(
Figure
4
-
5
)
fit
into
cone
-
shaped receptacles
in
the
rear
of
the
breaker
to
self
-
align
the
secondary
control
contact
blocks
.
F
:
T
'
N
Effective
7
/
00
Courtesy of NationalSwitchgear.com