Siemens GM-SG

Circuit
Breaker Positions
3
.
Release the circuit breaker release latch and
pull
the
circuit
breaker
out
from
the
DISCONNECT
position
.
The
circuit breaker
can now
be removed
from
cubicle
.
4
.
The circuit breaker is
now
free
to
be rolled
out
on
the
floor
using
the handles
as
shown
in
Figure
40
.
The
wheels
of
the
circuit
breaker
are
virtually
at
floor
level
(
unless the
switchgear
is
installed
on a
raised
pad
)
,
and
one
person
can
easily
handle the unit
.
A
.
Push
to
dose button
B
.
Push
to
open
button
C
.
Manual
spring charging
access
port
D
.
Charged
discharged
indicator
E
.
Open
closed
indicator
F
.
Operations
counter
G
.
Breaker
racking
release
handle
Figure
38
.
Front
Panel
of
GMSG
Circuit
Breaker
A
DANGER
Hazardous
voltages
and
High
-
speed
Moving
Parts
Will
cause
death
,
serious
injury
or
property
damage
.
Read instruction manuals
,
observe
safety
instructions
,
and
use
qualified
personnel
.
Figure
39
.
Racking
of Circuit
Breaker
with
Door
Closed
Note
:
Do
not
perform
Spring
Discharge
Check
if
the
circuit breaker
is
in
the
CONNECT
position
.
Open
circuit
breaker and rack
to
the
DISCONNECT
position
,
and
then
perform
the
Spring
Discharge
Check
.
1
.
Assure
that circuit breaker is
not
in
CONNECT
position
in
cell
.
2
.
Open
control
power
disconnect
(
e
.
g
.
,
pull
fuseholder
or
open
molded
case
circuit breaker
)
.
3
.
Press
red
Trip pushbutton
.
4
.
Press
black
Close
pushbutton
.
5
.
Again
press
red
Trip
pushbutton
.
6
.
Verify Spring
Condition
Indicator
shows
DISCHARGED
.
7
.
Verify
Main
Contact Status
Indicator shows
OPEN
.
Removal
from
Cell
in
Indoor
(
if
not
on
raised
pad
)
and
Shelter
-
Clad Outdoor
Switchgear
After
performing
the
Spring
Discharge
Check
(
with
control
power
de
-
energized
)
,
remove
the circuit
breaker
from
its
switchgear
cubicle
.
1
.
Insert
the
racking
crank
on
the
racking
screw on
the
front of
the
circuit
breaker
cell
,
and
push
in
(
see
"
Racking
Crank
Engagement
Procedure
"
)
.
This action
operates
the
racking
interlock
latch
.
Figure
39
shows
racking
of
a
circuit
breaker
.
2
.
Rotate
the
racking
crank counterclockwise until the
circuit
breaker is
in
the
DISCONNECT
position
.
Figure
40
.
Removal
of Circuit
Breaker
Removal
from Cell
in
Outdoor
Non
-
Walk
-
ln
Enclosures
,
or
for
Indoor
Switchgear
Installed
on a
Raised Pad
Removal
of
the
circuit
breaker
from
a non
-
walk
-
in
outdoor
switchgear
assembly
is
similar
to
removal
of
a
circuit breaker
at
floor
level
,
with
several
additional
steps
.
Figure
41
shows
one
of
the
two
circuit
breaker
extension rails
being
inserted into
the
fixed
rails
within
the
circuit
breaker
cell
.
The
rails
engage
locking
pins
in
the
fixed
rails
to
secure
them
in
position
.
40
Courtesy of NationalSwitchgear.com