GE POWER/VAC 13.8 - Switchgear Installation Procedures; Location Requirements; Anchoring Methods; Indoor Equipment Floor Preparation

INSTALLATION
Before
any
installation
work
is
done
,
consult
and
study
all
A
drawings
furnished
by
the
General
Electric
Company
for
the
^
particular
requisition
.
These
drawings
include
arrangement
and
floor
plan
drawings
,
elementary
,
connection
and
inter
-
connection
diagrams
and
a
device
summary
.
will
not
be
level
with
respect
to
the
stationary
element
.
The
switchgear
structure
can
be
secured
by
bolting
it
to
the
floor
channels
using
at
least
5
/
8
inch
bolts
at
locations
shown
in
Fig
.
5
.
Plug
welding
can
also
be
used
at
the
same
locations
if
desired
.
Occasionally
additional
shipping
members
are
installed
in
the
primary
area
to
protect
against
shipping
damage
.
CAUTION
—
Shipping
braces
must
be
removed
prior
to
energizing
.
Shipping
braces
are
marked
with
yellow
labels
.
Shipping
braces
may
be
applied
to
devices
as
well
as
to
current
-
carrying
conductors
.
After
the
shipping
braces
have
been
removed
,
all
joints
must
be
properly
tightened
and
insulated
before
energizing
the
bus
.
Mats
,
screens
,
railings
,
etc
.
which
an
>
external
to
the
switchgear
,
but
which
may
be
required
to
meet
any
local
codes
,
must
be
furnished
by
the
purchaser
.
Provision
should
be
made
in
the
floor
for
conduits
for
primary
and
secondary
cables
,
located
as
shown
on
the
floor
plan
drawing
furnished
for
the
particular
requisition
.
If
desired
,
the
conduits
may
be
installed
before
the
switchgear
.
Consideration
should
be
given
to
conduits
which
might
be
required
for
future
connections
.
Conduits
must
extend
no
more
than
one
inch
above
the
finished
floor
prior
to
the
installation
of
the
switchgear
.
If
shipped
in
more
than
one
section
,
shipping
sections
must
be
assembled
in
the
proper
sequence
due
to
the
location
of
conduits
.
The
left
-
hand
sec
-
tion
of
a
switchgear
line
-
up
must
be
positioned
in
its
final
location
first
.
Then
the
section
located
immediately
to
the
right
must
be
positioned
as
close
as
the
lifting
members
permit
with
the
front
in
alignment
with
the
first
section
.
Remove
the
lifting
members
and
then
push
or
jack
the
unit
to
the
left
until
it
is
flush
with
the
first
section
.
Be
sure
to
distribute
the
forces
over
the
side
frame
using
appropriate
timbers
so
as
not
to
deform
or
damage
the
surface
of
the
structure
.
LOCATION
The
recommended
aisle
space
required
at
the
front
and
at
the
rear
of
the
equipment
is
shown
on
the
floor
plan
drawing
furnished
for
the
particular
requisition
.
The
space
at
the
front
must
be
sufficient
to
permit
the
insertion
and
with
-
drawal
of
the
circuit
breakers
,
and
their
transfer
to
other
units
.
No
part
of
a
foundation
“
PAD
”
or
“
SILL
”
may
extend
more
than
3
inches
beyond
the
front
of
the
equip
-
ment
.
OUTDOOR
EQUIPMENT
Switchgear
support
should
be
concrete
or
reinforced
con
-
crete
with
depth
,
fill
,
drainage
,
etc
.
,
according
to
recom
-
mended
foundation
design
for
the
loading
,
type
of
con
-
struction
,
and
local
conditions
involved
.
The
base
furnished
with
the
switchgear
should
be
supported
on
a
level
surface
over
the
full
area
of
the
switchgear
.
Steel
supporting
mem
-
bers
should
be
furnished
if
required
for
leveling
the
founda
-
tion
and
supporting
the
switchgear
.
Refer
to
Fig
.
6
for
recommended
foundation
and
anchoring
.
Primary
and
secondary
conduits
should
be
installed
in
accordance
with
the
requisition
drawings
,
before
the
equip
-
ment
is
put
into
place
.
Conduits
must
extend
no
more
than
one
inch
above
the
finished
floor
prior
to
the
installation
of
the
switchgear
.
»
The
space
at
the
rear
must
be
sufficient
for
installation
of
cables
,
and
for
inspection
and
maintenance
.
ANCHORING
INDOOR
EQUIPMENT
—
FLOOR
PREPARATION
The
station
floor
must
be
strong
enough
to
prevent
sag
-
ging
due
to
weight
of
the
switchgear
structure
and
to
with
-
stand
the
impact
stress
caused
by
the
opening
of
the
circuit
breakers
under
short
circuit
conditions
.
The
impact
loading
is
approximately
llA
times
the
static
load
.
Suitable
means
must
be
provided
by
the
purchaser
for
anchoring
the
equipment
to
the
floor
.
It
is
essential
that
the
floor
be
level
to
avoid
distortion
of
the
switchgear
structure
and
that
the
equipment
be
completely
aligned
prior
to
final
anchoring
.
The
recommended
floor
construction
is
shown
in
Fig
.
5
.
The
floor
channels
must
be
level
and
straight
with
respect
to
each
other
.
Steel
shims
should
be
used
for
final
leveling
of
the
switchgear
,
if
necessary
.
Care
should
be
taken
to
provide
a
smooth
,
hard
,
and
level
floor
under
and
in
front
of
the
units
to
facilitate
installation
and
removal
of
the
breaker
.
If
the
floor
is
not
level
and
flush
with
the
floor
channels
,
it
will
be
difficult
to
handle
the
breaker
because
it
When
outdoor
pieces
of
equipment
are
shipped
in
more
than
one
section
,
the
roof
joint
between
the
sections
must
be
assembled
as
shown
in
Fig
.
7
.
Shipping
sections
must
be
assembled
in
the
proper
sequence
due
to
the
location
of
con
-
duits
.
The
left
-
hand
section
of
a
switchgear
line
-
up
must
be
positioned
in
its
final
location
first
.
Then
the
section
located
immediately
to
the
right
must
be
positioned
as
close
as
the
lifting
members
permit
with
the
front
in
alignment
with
the
first
section
.
Remove
the
lifting
members
and
then
push
or
jack
the
unit
to
the
left
until
it
is
flush
with
the
first
section
.
Be
sure
to
distribute
the
forces
over
the
side
frame
using
appropriate
timbers
so
as
not
to
deform
or
damage
the
sur
-
face
of
the
structure
.
21
Courtesy of NationalSwitchgear.com