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GEK-721
01,
Low
V
oltoge Swifchgeor
ASSEMBLY
OF
EQUIPMENT
Before
assembly
of
the
equipment
is
begun
all
com-
ponents should
be on
hand
to
facilitate installation.
The
individual
shipping
packages
must be
connected togefher
on the foundation.
If
there
is
no transformer
in
the lineup
and
the
equipment has
been
split
for
shipment,
place the
middle
package
on the foundation
first
and
assemble
in
both
directions.
If
the equipment
is part of a Load
Center
Unit
Substation. the transformer
section
should be set
on
its
pad
in
accordance
with
the instructions furnished
with
the
transformer,
and then
packages
of
equipment
added.
NOTE:
WHEN
AKD-6 SWITCHGEIR IS IN-
STALLED
IN THE
SAME LINEUP WITH
TRAIVSFORM
E
RS
AND
OTHE R
EqU
I
PM
E
NT,
IT
IS IMPERATIVE THAT ALL
MOUNTING
SURF.ACES
BE
LEVEL.
Proceed
to
assemble
the equipment
as
follows:
1. The
switchgear packages
should
be
placed
on
the
foundation
with the aid of
cranes
or
jacks as
shown
in
Figure
I
for
indoor
equipment
or
Figure
2 for
outdoor
equipment.
2.
For Indoor
Equipment,
the
packages
should
be
fas-
tened together
at
the
shipping
splits
by
bolting the front
and rear
upright
channels
together.
Use
3/a-16 hardware
furnished
with the
equipment
at the
end
of the
packages,
Ilta
transformer
is
in
the lineup, hardware
for
connecting
the flange
to the
switchgear
is
supplied
with
the equipment.
3, For
Outdoor Equipment,
remove
the lifting
plates
from
front
and fear
of
the
switchgear
base
at
both
ends
of
the
shipping
split joint
and
assemble
the
front
and
rear
splice plates
as
shown
in
Figure
14.
When
joining
shipping
packages,
special
procedures
for
weather-proofing
must
be followed as indicated
in
Figure
14.
The
joint
in
the
roof at
shipping
splits must
be
weather-
proofed,
This
is
done
as shown
in
Figure
14
by
placing
a
rubber
seal
on
each
side
of the top
edge
of
the
roof
sup-
port batten
so
that the roof
sections
butt up
against this
seal
on both
sides.
Bolt this joint
togeher,
using
7a-16
hardwaie.
A roof
cap
is
placed
over
this
seam
and held
in
place
by
the
roof
trim. Joints
between
transformer
throat
and
switchgear
and
between
shipping
splits must
be
weather-proofed as shown
in Figure
14.
Install
a
front
and
rear batten
and
rubber
seal
at the shipping
split joints
and
bolt
them
together
with the
furnished
3/e-16
hardware.
The
gasket
for an
outdoor transformer
is
furnished
with
the
transformer,
and
hardware
for
connecting
the
trans-
former
flange
to
the
switchgear
is supplied
with
the
equip-
ment.
Check
alignment
of
doors on
the outdoor
equipment
to
see
that
the weatherproof
seal
has
not
been disturbed.
4,
Bolt
the
main
buses,
ground
buses,
and neutral
buses
of
adjacent shipping
packages
together using
the
splice
bars furnished
with
the
equipment.
See
Figure
13
and
14
for
details
of
splice
bar
connections.
The
ground
bus
is
mounted
directly on the rear upright
channels,
It
is
par-
ticularly
important
that
this
bus be connected since
it
pro-
vides
an
integral ground
for all
the
equipment
that
should
be
connected
to
the station
ground.
Neutral
buses
are
mounted
on
molded insulators
that
are
attached
to
the
rear
upright
channels.
If
a
transformer
is
present
in
the
Iineup, make the
necessary
connections
from the
equipment
to
the flexible
connectors
furnished
with
the transformer
as
shown
in
Figures
13
and
14. Connection
hardware
is
sup-
plied
with the
equipment.
The ground
connection
bar in
the
bus'entrance compartment
will
be shipped
turned
in.
This bar should
be reassembled
in
the
correct
position
and
connected
at
the
offset
portion
to
the
transformer
ground
pad
with a
1/z
inch
bolt.
Consult transforiner instructions
for
proper
connection
procedure.
All
bolted
bus
joints
should
be
made
up
using
the
proper
torque values as
shown
in
Table
A.
5.
Bolt or
weld
the
equipment
to
the
foundation
as
specified
under "Anchoring."
6.
All
shipping supports
must
be
removed
from
the
switchgear. These
are painted
yellow.
7. Busway runs
must
be
lined
up and
connected
to
the
equipment. Hardware
for this joint is
furnished
with
the
busway.
8.
Connect
control
cables between
units
at the
shipping
splits.
A
tag
at
the
top of
the
unit
adjacent
to
the split
will
indicate where
the wires
that
cross
the split
are
located. These
wires
are
all
tagged
and should be laid
across
the
split
and
connected
to
the shipping
split
terminal
blocks as
indicated.
9.
Connect
control
cables
to the switchgear
unit
as
follows:
a. When
control conduits enter
the
switchgear from
below,
they
should
not
extend
more
than
one
inch
above
the floor. The control
cables
may be
pulled
through the conduits before
or after the
switchgear
is
installed.
b.
Route the
control
cables
from
the conduits through
the
wiring trough
at
the side
of the
cable
compart-
ment and
connect
the
cables
to
the
terminal
blocks
in
accordance
with
the
connection
diagrams
for
the
equipment.
c.
If
the control conduits
enter
from
above,
drill
the
top
cover
within
the available
space
indicated.
Con-
trol
cables
should
be routed
to
the wiring
trough
and
connected
to
the
terminal
blocks
as
above.
10. Connect
the main
cables
to
the units. Before
any
main
cable connections
are
made,
the
cables
should
be
identified
to
indicate
their
phase
relationship
with
equip-
ment. Adequate electrical and mechanical
clearances must
be provided
between
conduits,
cables
and
bus. Where
the
cables enter
the
unit,
they
can be lashed
to
cable supports
at
the rear
of
the
cable compartment
as required.
See
Figure
9.
Cable
terminals are included
with the
switchgear,
and
are
mounted
at
the
ends
of
the bars
in
the
cable
compart-
ment. Check
to
see
that
the
proper size
and
quantity
of
terminals
are located
at
each connection
point, and that
they
are
positioned correctly
to
receive
cables
coming from
above
or
below.
In all
cases,
carefully
follow
the
cable
manufacturer's
recommendations
for installation
of
cable,
as
well
as
the instructions
contained
in this
book.
12
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