Siemens 5-GMI-250 - Introduction and Safety; Qualified Person Definition; Key Dangerous Procedures; Power Circuit Breaker Hazards

1
Introduction
and
Safety
Signal
Words
The
signal
words
"
Danger
"
,
"
Warning
"
and
"
Caution
"
used
in
this
manual
indicate
the
degree
of
hazard
that
may
be
encoun
-
tered
by
the
user
,
These
words
are
defined
as
:
Danger
-
Indicates
an
imminently
hazardous
situation
which
,
if
not
avoided
,
will
result
in
death
or
serious
injury
.
Warning
-
Indicates
a
potentially
hazardous
situation
which
,
if
not
avoided
,
could
result
in
death
or
serious
injury
.
Caution
-
Indicates
a
potentially
hazardous
situation
which
,
if
not
avoided
,
may
result
in
minor
or
moderate
injury
.
Introduction
The
GMI
family
of
vacuum
circuit
breakers
is
designed
to
meet
all
the
applicable
ANSI
,
NEMAand
IEEE
standards
.
Success
-
ful
application
and
operation
of
this
equipment
depends
as
much
upon
proper
installation
and
maintenance
by
the
user
as
it
does
upon
the
careful
design
and
fabrication
by
Siemens
.
The
purpose
of
this
Instruction
Manual
is
to
assist
the
user
in
developing
safe
and
efficient
procedures
for
the
installation
,
maintenance
and
use
of
the
equipment
.
Contact
the
nearest
Siemens
representative
if
any
additional
information
is
desired
.
Dangerous
Procedures
In
addition
to
other
procedures
described
in
this
manual
as
dangerous
,
user
personnel
must
adhere
to
the
following
.
1
.
Always
work
on
a
de
-
energized
breaker
.
Always
de
-
ener
-
gize
a
breaker
,
and
remove
it
from
the
metal
-
clad
switchgear
before
performing
any
tests
,
maintenance
or
repair
.
2
.
Always
perform
maintenance
on
the
breaker
after
the
spring
-
charged
mechanisms
are
discharged
(
except
for
test
of
the
charging
mechanisms
)
,
3
.
Always
let
an
interlock
device
or
safety
mechanism
perform
its
function
without
forcing
or
defeating
the
device
.
ADANGER
Power
circuit
breakers
operate
at
high
voltages
and
have
spring
-
loaded
mechanical
parts
which
operate
at
high
speed
.
When
operated
improperly
,
this
equipment
will
cause
death
,
personal
injury
and
property
damage
.
To
avoid
elecTical
shock
,
burns
and
entanglement
in
moving
pals
this
equipment
must
be
installed
,
operated
and
maintained
only
by
qualified
persons
thoroughly
familiar
with
the
equipment
,
instruction
manuals
and
drawings
h
Field
Service
Operation
Siemens
can
provide
competent
,
well
-
trained
Field
Service
Representatives
to
provide
technical
guidance
and
advisory
assistance
for
the
installation
,
overhaul
,
repair
and
mainte
-
nance
of
S
emens
equipment
,
processes
and
systems
.
Con
-
tact
regional
service
centers
,
sales
offices
or
the
factory
for
details
.
Qualified
Person
For
the
purpose
of
this
manua
and
product
labels
,
a
"
Qualified
Person
"
is
one
who
is
familiar
with
the
installation
,
construction
and
operation
of
this
equipment
,
and
the
hazards
involved
.
In
addition
,
this
person
has
the
following
qualifications
:
•
Training
and
authorization
to
energize
,
de
-
energize
,
clear
,
ground
and
tag
circuits
and
equipment
in
accordance
with
established
safety
practices
.
•
Training
in
the
proper
care
and
use
of
protective
equipment
such
as
rubber
gloves
,
hare
hat
,
safety
glasses
,
face
shields
,
flash
clothing
,
etc
.
,
in
accordance
with
established
safety
procedures
.
•
Training
in
rendering
first
aid
,
2
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