Siemens 81000 90H35

Maintenance
Page
15
Removing
Vacuum
Bottle
An
adjusting
handle
is
required
for
installing
the
interrupters
.
It
is
supplied
with
every
replacement
interrupter
.
^
WARNING
High
peak
voltages
can
result
in
er
-
roneous
test
results
and
x
-
radiation
causing
personal
injury
.
DC
high
potential
test
voltage
sources
using
half
-
wave
conversion
will
apply
peak
voltages
3
times
greater
than
the
measured
average
DC
voltage
.
Repetitive
application
of
high
peak
voltage
can
result
in
erroneous
test
results
and
x
-
radiation
causing
personal
injury
.
Do
not
use
DC
high
potential
voltage
sour
-
ces
which
employ
half
-
wave
conversion
circuits
.
Vacuum
Bottle
Replacement
AWARNING
Accidental
contact
with
energized
components
can
cause
shock
,
burn
or
electrocution
.
Figure
14
.
Removing
an
Interrupter
Before
replacing
vacuum
bottles
,
withdraw
the
contactor
from
the
controller
compartment
to
ensure
that
all
high
volt
-
age
sources
are
disconnected
.
Refer
to
Figure
14
.
At
the
pole
whose
interrupter
is
to
be
replaced
:
•
Loosen
the
M
8
hexagon
socket
bolt
(
5.1
)
of
the
flexible
connection
(
4.3
)
and
hold
the
nut
(
5.3
)
with
a
flat
wrench
(
13
mm
)
,
as
shown
in
the
Figure
14
.
•
Loosen
the
M
8
locknut
(
4.5
)
of
the
articulated
bolt
(
4.2
)
,
holding
the
moving
contact
(
4.1
.
2
)
of
the
vacuum
interrupter
with
a
flat
wrench
at
location
A
(
17
mm
)
.
•
Unscrew
the
articulated
bolt
(
4.2
)
from
the
moving
contact
by
the
locknut
(
3.5
)
using
a
13
mm
box
wrench
.
•
Unscrew
the
M
8
hexagon
socket
bolt
(
6.2
)
at
the
lower
terminal
(
6
)
.
•
Take
hold
of
the
interrupter
and
lift
it
out
of
the
hous
-
Low
voltage
test
power
is
required
during
the
re
-
installation
of
new
vacuum
interrup
-
ters
,
so
exercise
caution
.
To
gain
access
to
the
vacuum
bottles
,
first
remove
the
power
fuses
,
the
two
interphase
barriers
and
the
horizontal
dust
barrier
.
The
interrupters
can
be
replaced
when
the
vacuum
contactor
is
in
the
“
Off
”
position
.
The
replacement
instructions
should
be
adhered
to
,
other
-
wise
correct
operation
of
the
vacuum
contactor
cannot
be
ensured
.
mg
.
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