Siemens GMI Series

Interrupter
/
Operator
Description
I
Page
10
primary
contacts
,
and
the
closing
function
may
be
overriden
by
the
tripping
function
at
any
time
.
Modes
of
Operation
Some
maintenance
procedures
are
more
easily
understood
when
the
operating
mechanism
modes
of
operation
are
described
in
detail
.
The
next
few
paragraphs
explain
the
five
modes
or
status
conditions
(
charging
,
closing
,
trip
-
free
,
opening
and
rapid
auto
-
reclosing
)
of
the
stored
energy
operating
mechanism
.
Trip
Solenoid
O
o
266
Trip
Solenoid
Armature
o
o
O
o
Trip
Actuator
152
O
Drive
Cam
20
Banana
“
~
Link
113
MU
'
'
'
NOTE
Trip
Main
Link
Hatchet
All
discussion
of
modes
of
operation
assumes
that
the
reader
is
viewing
the
operator
from
the
front
,
or
from
the
right
hand
side
.
99
120
Jack
©
Shaft
O
O
1
217
n
_
rt
fi
Spring
Charging
Mode
Figures
15
and
16
show
several
key
components
of
the
operator
mechanism
in
positions
corresponding
to
the
breaker
open
,
with
the
closing
springs
discharged
(
Fig
-
ure
15
)
and
charged
(
Figure
16
)
.
Figure
17
shows
portions
of
the
operator
mechanism
that
manually
or
electrically
Figure
16
.
Breaker
Open
—
Closing
Springs
Charged
.
charge
the
closing
springs
.
The
drive
cam
(
20
)
,
the
closing
spring
crank
arms
(
see
Figure
19
)
and
spring
condition
indicator
cam
(
18
)
are
directly
keyed
to
the
main
cam
shaft
(
3
)
.
The
main
cam
shaft
rotates
counterclockwise
.
The
clos
-
Trip
Solenoid
Pawl
crmpj
Plate
266
11
O
Trip
Solenoid
Armature
Manual
Charge
Handle
Socket
Drive
Cam
o
Manual
Charging
©
20
O
Link
Trip
48
Actuator
52
U
152
Close
Shaft
Banana
Link
Upper
-
Pawl
O
©
Trip
72
113
O
Hatchet
24
-
2
\
99
v
/
o
I
Main
Cam
Shaft
'
Ratchet
-
Wheel
Drive
Arm
15
Trip
Cam
Follower
V
-
f
Shaft
i
\
O
3
79
115
o
8
Close
Hatchet
Lower
Pawl
O
Ratchet
Mam
Link
Pin
22
24
-
1
16
120
°
°
4
O
Jack
Shaft
o
Charging
Motors
Eccentric
O
Drive
Plate
4
Jack
Shaft
Plate
217
O
o
o
13
Point
"
A
11
Lit
njt
il
Figure
15
.
Breaker
Open
—
Closing
Springs
Discharged
.
Figure
17
.
Pawl
and
Ratchet
Drive
.
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