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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