GE POWER/VAC 4.16 User manual

GEK
-
39672
F
INSTRUCTIONS
SUPERSEDES
GEK
-
39672
E
POWER
/
VAC
*
METAL
-
CLAD
SWITCHGEAR
TYPES
4.16
AND
13.8
FOR
POWER
-
VAC
CIRCUIT
BREAKER
TYPES
VB
-
4.16
,
VB
-
7.2
,
VB
-
13.8
,
VB
1
-
4.16
,
AND
VB
1
-
13.8
GENERAL
®
ELECTRIC
Courtesy of NationalSwitchgear.com

'
1
CONTENTS
Page
Introduction
Safety
General
Specific
Receiving
,
Handling
&
Storage
.
Receiving
Handling
Storage
of
Indoor
Equipment
.
Storage
of
Outdoor
Equipment
5
5
5
7
7
7
9
9
10
17
Description
Secondary
Enclosure
Primary
Enclosure
Breaker
Removable
Element
Breaker
Lift
Truck
Breaker
Racking
Mechanism
Remote
Racking
Operator
Primary
Disconnects
Bus
Compartment
Current
Transformer
Compartment
Primary
Termination
Space
Voltage
Transformers
Current
-
Limiting
Fuses
and
Control
Power
Transformer
Dummy
Removable
Element
Ground
and
Test
Device
17
17
17
17
18
18
18
19
19
19
19
19
20
20
Installation
Location
Anchoring
Indoor
Equipment
—
Floor
Preparation
Outdoor
Equipment
Outdoor
Equipment
With
Protected
Aisle
Outdoor
Equipment
With
Common
Aisle
Breaker
Removable
Element
Test
Cabinet
Addition
of
Units
to
Existing
Equipment
Connections
Main
Bus
Assembly
Taped
Insulation
Instructions
for
5
&
15
kV
Equipment
Bus
Duct
Primary
Cables
Insulating
Primary
Cable
Terminations
Potheads
Termination
Without
Pothead
Ground
Fault
Current
Transformers
(
Through
-
Type
)
.
Control
Cables
Ground
Bus
Lightning
Protection
Surge
Suppressors
Roof
Entrance
Bushing
21
21
21
21
21
25
25
26
26
26
28
28
29
32
32
33
34
34
34
35
35
35
35
35
*
u
Courtesy of NationalSwitchgear.com

Page
»
Testing
and
Inspection
35
Operation
Breaker
Installation
Breaker
Racking
with
Front
Door
Closed
Remote
Racking
Attachment
Positive
Interlock
Negative
Interlock
Spring
Discharge
Interlock
Interference
Interlock
Closing
Spring
Gag
Interlock
Key
Lock
Padlocks
Stationary
Auxiliary
Switch
Breaker
Position
Switch
Space
Heaters
Maintenance
Recommended
Maintenance
Indoor
and
Outdoor
Acrylic
Paint
Finish
36
36
39
39
39
39
40
41
42
42
42
42
42
42
43
44
44
45
Renewal
Parts
3
Courtesy of NationalSwitchgear.com

LIST
OF
ILLUSTRATIONS
Page
Figure
6
Typical
Indoor
Power
/
Vac
*
Metal
-
clad
Switchgear
Equipment
Typical
Outdoor
Power
/
Vac
*
Metal
-
clad
Switchgear
Equipment
Typical
Outdoor
Power
/
Vac
*
Metal
-
clad
Switchgear
Equipment
with
Protected
Aisle
Installation
Details
for
Indoor
Power
/
Vac
*
Metal
-
clad
Switchgear
Installation
Details
for
Outdoor
Power
/
Vac
*
Metal
-
clad
Switchgear
Installation
Details
for
Outdoor
Power
/
Vac
*
Metal
-
clad
Switchgear
with
Protected
Aisle
.
.
..
Installation
Details
for
Outdoor
Power
/
Vac
*
Metal
-
clad
Switchgear
with
Aisle
Extension
Side
Section
View
Power
/
Vac
*
Metal
-
clad
Switchgear
Power
/
Vac
*
Breaker
and
Lift
Truck
Remote
Racking
Operator
Primary
Disconnects
1200
,
2000
,
3000
Amp
Voltage
Transformer
Drawout
Carriage
Control
Power
Transformer
Drawout
Carriage
Metal
-
clad
Equipment
Detail
Views
Test
Cabinet
Outdoor
Metal
-
clad
Switchgear
Addition
of
Units
to
a
Line
-
up
Outdoor
Metal
-
clad
Switchgear
with
Protected
Common
Aisle
—
Addition
of
Units
to
Line
-
up
Bolt
Torque
Values
for
Power
/
Vac
*
Switchgear
.
Typical
Shipping
Splits
.
Bus
Compartment
Cover
Bus
Insulating
Boot
Bus
Bars
*
Bus
Connection
Joint
Dead
End
Bus
Joint
Current
Transformer
Joint
Tee
Connection
Joint
.
Double
Bus
Bar
Joint
..
.
Pothead
or
Bushing
or
Terminator
#
6
Cable
Termination
Joint
Insulation
Materials
for
Field
Installation
—
5
kV
&
15
kV
Bus
Duct
Gasket
Installation
of
Primary
Cables
Cable
Termination
Without
Pothead
,
Single
Conductor
RearView
of
Unit
Showing
Through
-
Type
Ground
Fault
Current
Transformers
Control
Cable
Guide
Racking
Mechanism
Lift
Truck
Connection
to
Rails
Racking
Arm
Position
Indicator
Lever
Positive
Interlock
Negative
Interlock
Key
Lock
and
Padlocks
Closing
Spring
Discharge
Interlock
.
Interference
Interlock
Stationary
Auxiliary
Switch
and
Breaker
Position
Switch
Right
Hand
Track
Assembly
for
Vacuum
Metal
-
clad
Left
Hand
Track
Assembly
for
Vacuum
Metal
-
clad
Spreader
Bar
,
Chain
and
Idler
Sprocket
for
Vacuum
Metal
-
clad
Connection
Boots
for
Primary
Disconnect
,
Surge
Suppressors
,
and
Bus
4.16
kV
Inter
Unit
Barrier
13.8
kV
Inter
Unit
Barrier
4.16
kV
Primary
Disconnect
.
13.8
kV
Primary
Disconnect
Vacuum
Metal
-
clad
Breaker
Unit
.
1
6
2
7
3
8
,
9
5
10
,
11
12
,
13
14
,
15
6
7
8
16
9
16
10
17
11
18
12
19
14
19
15
22
,
23
,
24
16
26
17
27
18
a
27
18
b
28
19
28
20
29
21
29
22
30
23
30
24
30
25
30
26
31
27
31
28
31
29
31
30
32
31
32
32
33
33
33
34
34
35
36
36
37
37
37
38
38
39
40
40
41
41
41
42
42
43
42
44
45
43
45
46
47
46
48
46
J
47
49
50
47
51
48
52
48
53
48
54
49
4
Courtesy of NationalSwitchgear.com

POWER
/
VAC
*
METAL
-
CLAD
SWITCHGEAR
TYPES
4.16
AND
13
.
B
FOR
POWER
-
VAC
CIRCUIT
BREAKER
TYPES
VB
-
4.16
,
VB
-
7.2
,
VB
-
13.8
,
VB
1
-
4.16
,
and
VB
1
-
13.8
»
INTRODUCTION
Metal
-
clad
switchgear
is
equipment
designed
for
the
pro
-
tection
,
instrumentation
and
control
of
various
types
of
electrical
apparatus
and
power
circuits
.
and
4
.
The
equipment
is
not
designed
for
exposure
to
dripping
liquids
as
this
condition
is
not
a
usual
ANSI
service
condition
.
Dripping
liquids
can
destroy
the
integrity
of
the
insulation
system
and
must
be
avoided
.
The
switchgear
consists
of
one
or
more
vertical
sections
which
are
mounted
side
by
side
and
connected
mechanically
and
electrically
to
form
a
complete
switching
equipment
.
Typical
pieces
of
equipment
are
shown
in
Figs
.
1
,
2
and
3
.
NOMINAL
INTER
-
CONTINUOUS
CURRENT
RLJPTING
TYPE
EQUIP
-
MENT
MAXIMUM
The
circuit
breakers
are
easily
removable
to
provide
maximum
accessibility
for
maintenance
with
minimum
interruption
of
services
.
The
switchgear
is
designed
to
pro
-
vide
a
high
degree
of
safety
to
the
operator
.
All
equipment
is
enclosed
in
grounded
metal
compartments
.
The
equipment
is
available
in
the
ratings
listed
in
the
following
table
.
The
ratings
of
the
equipment
and
devices
are
based
on
usual
service
conditions
as
covered
in
ANSI
stan
-
dards
.
Operation
at
currents
above
the
equipment
rating
will
result
in
temperature
rises
in
excess
of
these
standards
,
and
is
not
recommended
.
For
outdoor
installation
the
same
basic
equipment
is
built
into
a
weatherproof
housing
as
in
Figs
.
2
,
3
CAPACITY
CIRCUIT
BREAKER
VOLTAGE
KV
AMPERES
MV
A
VM
-
4.16
VB
-
4.16
-
250
4.76
1200
-
2000
250
VM
-
4.16
VB
-
4.16
-
350
1200
-
2000
350
4.76
3000
VM
-
13.8
8.25
1200
-
2000
VB
-
7.2
-
500
500
1200
-
2000
VB
-
13.8
-
500
15.0
500
VM
-
13.8
15.0
1200
-
2000
VM
-
13.8
VB
-
13.8
-
750
750
1000
VM
-
13.8
VB
-
13.8
-
1000
15.0
1200
-
2000
3000
FOR
VB
-
1
SERIES
SEE
GEK
86132
A
SAFETY
Each
user
is
responsible
for
communicating
all
safety
in
-
structions
and
practices
to
personnel
associated
with
this
equipment
.
The
following
practices
should
be
included
in
a
user
’
s
safety
program
.
These
do
not
supplant
the
user
’
s
responsi
-
bility
for
devising
a
complete
safety
program
.
They
are
rather
suggestions
concerning
some
aspects
of
personnel
safety
related
to
circuit
breakers
and
metalclad
switchgear
equipment
.
General
Electric
assumes
no
responsibility
for
user
practices
which
deviate
from
these
recommendations
.
Although
the
interlock
linkage
has
been
designed
to
be
rugged
,
inadvertent
bending
of
the
spring
discharge
and
/
or
negative
interlock
actuating
linkages
during
breaker
stor
-
age
,
lift
truck
or
stack
insertion
operations
could
negate
their
proper
functioning
and
therefore
create
a
safety
risk
.
This
type
of
handling
damage
must
be
avoided
by
any
user
.
All
servicing
of
switchgear
must
be
performed
only
by
trained
personnel
,
with
BOTH
THE
PRIMARY
AND
CONTROL
POWER
CIRCUITS
DE
-
ENERGIZED
.
GENERAL
1
.
The
term
“
metalclad
switchgear
”
includes
circuit
breakers
,
associated
interrupting
,
switching
control
,
metering
and
protective
devices
,
together
with
their
supporting
metal
structures
,
enclosures
,
electrical
connections
and
accessories
.
2
.
All
personnel
associated
with
installation
,
operation
and
maintenance
of
metalclad
switchgear
should
be
thoroughly
instructed
and
supervised
regarding
power
equipment
in
general
as
well
as
the
particular
model
of
equipment
with
which
they
are
working
.
Instruction
books
should
be
closely
studied
and
followed
.
These
instructions
do
not
purport
to
cover
al
!
details
or
variations
in
equipment
nor
to
provide
for
every
possible
contingency
to
be
met
in
connection
with
installation
,
operation
or
maintenance
.
Should
further
information
be
desired
or
should
particular
problems
arise
which
are
not
covered
sufficiently
for
the
purchaser
'
s
purposes
,
the
matter
should
be
referred
to
the
General
Electric
Company
.
To
the
extent
required
the
products
described
herein
meet
applicable
A
NS
I
,
IEEE
and
NEMA
stand
-
ards
;
but
no
such
assurance
is
given
with
respect
to
local
codes
and
ordinances
because
they
vary
greatly
.
Registered
Trademark
of
the
General
Electric
Company
5
Courtesy of NationalSwitchgear.com

Q
«
/
>
in
oo
Ov
00
.
5
?
u
-
Fig
.
1
Typical
Indoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
Equipment
*
Typical
Outdoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
Equipment
Fig
.
2
6
Courtesy of NationalSwitchgear.com

9
SO
oo
m
00
ON
oo
m
•
^
U
.
Fig
.
3
Typical
Outdoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
with
Protected
Aisle
controlled
manner
.
Particular
care
must
be
exercised
to
keep personnel
clear
of
mechanisms
which
are
to
be
operated
or
released
.
Information
on
construction
of
such
mechanisms
is
provided
in
the
instruction
book
for
the
particular
breaker
.
3
.
DO NOT
approach
or
service
any
equipment
which
is
normally
energized
by
any
switchgear
unless the
breaker
is
in
the
disconnect
/
test
position
.
In
this dis
-
connect
/
test
position
the load bus
must
be
adequately
grounded
and
the
breaker secured
.
4
.
If
there
is
any
evidence
of
or
suspected
deterioration
of
breaker
dielectric
capability
,
adjacent
areas
should be
promptly
cleared
of
personnel
.
The breaker should
then be de
-
energized
by
“
back
-
ups
”
and
isolated
.
3
.
Maintenance
programs
must
be well
planned
and
carried
out
in
a
manner
consistent with
both
customer
experience
and
manufacturer
’
s
recommendations
.
Good
maintenance
is essential
to
electrical
equipment
reliability
and
safety
.
§
SPECIFIC
1
.
DO NOT
work
on
any
energized
breaker
.
If
work
has
to
be
performed
on
the breaker
,
rack
it
out
and de
-
energize
the
spring
-
charged
mechanism
.
Once
the
breaker
has been de
-
energized
,
all
control
power
must
must
be
disconnected
before
servicing
.
2
.
All
spring
-
charged
mechanisms related
to
a
breaker
must
be
serviced
only by
skilled
and
knowledgeable
personnel
capable
of
releasing
each
spring
load
in
a
RECEIVING
,
HANDLING
AND
STORAGE
RECEIVING
Every
case
or
crate
leaving
the
factory
is
plainly
marked
at
convenient
places
with
case
number
,
requisition
number
,
customer
’
s
order
,
front
or
rear
,
and
,
when
for
size
and other
reasons
it
is
necessary
to
divide
the
equipment
for
shipment
,
with
the
section
numbers
of
the
portion
of
equipment
enclosed
in
each
shipping
case
.
orandum
of
Shipment
.
To
avoid
the loss
of
small
parts
when
unpacking
,
the
contents
of
each
case
should be
carefully
checked
against
the
Packing
Details before
discarding
the
packing
material
.
Notify
the
nearest
General
Electric
Company
representative
at
once
if
any
shortage
of
material
is discovered
.
Before
leaving
the
factory
all
elements
are
carefully
inspected
and
packed
by
workmen
experienced
in
the
proper
handling
and
packing
of
electrical
equipment
.
U
pon
receipt
of
any
apparatus
an
immediate
inspection
should be
^
The
contents
of
each
package
of
the
shipment
are
listed
in
|
^
he
Packing
Details
.
This
list
is
forwarded
with
the
ship
-
ment
,
packed
in
one
of
the
cases
.
The
case
is
especially
marked
and
its
number
can
also
be
obtained
from
the
Mem
-
7
Courtesy of NationalSwitchgear.com

1
LIFT
-
SLING
T
*
y
O
i
o
'
rm
oj
o
I
:
i
i
r
r
*
‘
1
'
r
-
n
i
i
:
:
i
i
i
i
r
n
i
:
;
i
i
r
L
.
.
J
[
;
L
SIDE
VIEW
FRONT
VIEW
t
LIFT
JACK
CABLE
LOOP
LIFTING
EYE
LIFTING
ANGLE
OPTIONAL
METHOD
:
2
LIFT
JACK
*
«
-
0
i
i
CABLE
LOOP
-
1
_
i
—
r
-
T
I
D
i
i
i
i
*
-
L
-
L
0
CROSS
LIFTING
^
JACKING
TIMBER
LIFT
JACK
.
4
CORNERS
EYE
O
LIFTING
ANGLE
f
—
1
i
9
:
:
i
r
t
?
E
A
i
;
SEE
OPTIONAL
METHODS
O
A
!
I
:
o
I
1
I
FLOOR
LINE
2
*
-
Q
IT
TT
Al
-
AA
-
ROLLERS
—
IF
USED
OPTIONAL
METHOD
IN
THIS
DIRECTION
ONLY
USE
ROLLERS
FOR
MOVEMENT
EACH
ROLLER
MUST
SUPPORT
THE
FRONT
.
MIDDLE
&
REAR
FLOOR
CHANNELS
o
TYPICAL
JACKING
AREA
>
OC
LIFT
JACKING
METHOD
00
r
-
vO
S
S
<
N
O
f
•
U
-
Installation
Details
for
Indoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
Fig
.
5
8
Courtesy of NationalSwitchgear.com

I
0.00
82
00
2.12
66
"
REQUIRED
AS
'
MINIMUM
AISLE
SPACE
FOR
BREAKER
REMOVAL
1
OR
BOLT
94
00
35
"
RECOMMENDED
FOR
REAR
HINGED
COVERS
REAR
y
FINISH
FLOOR
LINE
FRONT
2.75
DIA
HOLE
FOR
.
50
DIA
ANCHOR
BOLT
FRONT
&
REAR
POWER
VAC
FLOOR
FRAME
4
"
CHANNEL
2.12
_
A
~
ALTERNATE
METHOD
FINISH
FLOOR
,
SEE
NOTE
#
1
>
<
S
BOLT
rB
>
<
n
(
“
I
!
/
^
^
^
-
FINISH
FLOOR
>
A
SWITCH
GEAR
PAD
f
<
L
>
\
ik
OH
\
/
-
•
*
‘
'
•
1
•
i
MUST
BE
EVEN
AND
LEVEL
MUST
BE
EVEN
ANI
LEVEL
i
'
INDOOR
ANCHORING
METHOD
O
'
L
A
"
CHANNEL
SWITCH
GEAR
FLOOR
STEEL
O
CM
O
1
"
MAX
.
I
NOTE
#
1
THE
FINISHED
FLOOR
PAD
MUST
FINISH
FLOOR
LINE
PROJECT
66
INCHES
BEYOND
THE
FRONT
OF
THE
P
/
V
EQUIPMENT
DEVICE
^
^
^
f
^
|
^
^
;
'
PANEL
.
THE
ELEVATION
MUST
BE
LEVEL
*
i
1
"
'
*
*
1
'
'
*
'
WITH
THE
BOTTON
OF
THE
P
/
V
FLOOR
E
*
-
B
-
VIEW
TYPICAL
FOR
CONDUIT
LEADS
FRAME
AND
SWITCHGEAR
PAD
.
»
Installation
Details
for
Indoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
(
Continued
)
Fig
.
5
made
for
any
damage
sustained
while
enroute
.
If
damage
is
evident
or
an
indication
of
rough
handling
is
visible
,
a
claim
for
damage
should
be
filed
at
once
with
the
transportation
company
and
the
General
Electric
Company
notified
promptly
.
Information
as
to
damaged
parts
,
part
number
,
case
number
,
requisition
number
,
etc
.
,
should
accompany
the
claim
.
STORAGE
OF
INDOOR
EQUIPMENT
If
it
is
necessary
to
store
the
equipment
for
any
length
of
time
,
the
following
precautions
should
be
taken
to
prevent
breakage
,
corrosion
,
damage
or
deterioration
:
1
.
Uncrate
the
equipment
.
Check
it
thoroughly
for
damage
.
2
.
Cover
important
parts
such
as
jack
screws
,
gears
and
chain
of
racking
mechanism
,
linkage
and
moving
parts
with
a
heavy
oil
or
grease
,
such
as
0282
A
2048
P
009
which
is
supplied
with
the
gear
.
HANDLING
Before
uncrating
,
indoor
equipment
may
be
moved
by
crane
with
slings
under
the
skids
.
Spreaders
should
be
used
to
keep
the
cables
from
rubbing
against
the
equipment
.
If
crane
facilities
are
unavailable
,
rollers
under
the
skids
may
be
used
.
Fig
.
5
shows
the
suggested
method
of
anchoring
the
switchgear
after
it
is
removed
from
the
skids
.
After
tre
equipment
is
in
place
,
the
lifting
brackets
should
be
removed
.
^
Methods
of
handling
outdoor
equipment
Figs
.
6
,
7
and
8
.
After
the
equipment
is
in
place
,
the
lifting
brackets
should
be
removed
.
3
.
Store
in
a
clean
,
dry
place
with
a
moderate
tempera
-
ture
(
such
as
40
-
100
°
F
)
and
cover
with
a
suitable
cover
to
prevent
deposits
of
dirt
or
other
foreign
substances
upon
movable
parts
and
electrical
contact
surfaces
.
4
.
Batteries
should
be
uncrated
and
put
on
trickle
charge
immediately
upon
receipt
.
are
shown
in
9
Courtesy of NationalSwitchgear.com

2
.
Cover
important
parts
such
as
jack
screws
,
gears
and
chain
of
racking
mechanism
,
linkage
and
moving
machine
-
finished
parts
with
a
heavy
oil
or
grease
such
as
0282
A
2048
P
009
supplied
.
3
.
Batteries
should
be
uncrated
and
put
on
trickle
charge
immediately
upon
receipt
.
4
.
Dampness
or
condensation
can
be
prevented
by
mak
-
ing
a
temporary
power
supply
connection
to
the
heaters
already
installed
in
the
equipment
.
If
the
equipment
has
been
subjected
to
moisture
it
should
be
dried
out
in
the
same
manner
as
described
for
indoor
equipment
.
5
.
If
dampness
or
condensation
is
encountered
in
the
storage
location
,
(
can
occur
with
rapid
temperature
changes
)
heaters
should
be
placed
inside
the
equip
-
ment
to
prevent
moisture
damage
.
Approximately
300
watts
of
heat
per
vertical
stack
will
be
required
.
The
suggested
arrangement
is
one
75
-
watt
heat
ele
-
ment
in
each
breaker
and
primary
cable
compartment
.
Remove
all
cartons
and
other
miscellaneous
materials
packed
inside
units
before
energizing
any
heaters
.
If
the
equipment
has
been
subjected
to
moisture
,
it
should
be
carefully
dried
out
using
forced
warm
air
and
then
tested
with
a
1000
or
2500
volt
megger
.
A
reading
of
at
least
200
megohms
should
be
obtained
.
6
.
Breakers
should
be
prepared
for
storage
separately
.
Refer
to
the
breaker
instruction
book
GEK
-
39671
for
details
.
I
J
«
CAUTION
:
BE
SURE
THAT
FUSES
TO
CPT
SECONDARY
HAVE
BEEN
REMOVED
BEFORE
ENERGIZING
THE
TEMPORARY
CONNEC
-
TION
TO
THE
HEATERS
.
THIS
IS
TO
PREVENT
A
BACK
FEED
OF
HIGH
VOLTAGE
AT
CPT
PRIMARY
.
STORAGE
OF
OUTDOOR
EQUIPMENT
1
.
Uncrate
the
equipment
.
Check
it
thoroughly
for
damage
.
5
.
Breakers
should
be
prepared
for
storage
separately
.
Refer
to
the
breaker
instruction
book
GEK
-
39671
for
details
.
#
LIFT
-
SLING
.
SPREADER
3
o
>
3
E
E
oi
z
3
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-
BOTH
ENDS
a
S
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N
O
U
£
I
ANGLE
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OC
I
E
o
Si
FRONT
VIEW
SIDE
VIEW
i
Fig
.
6
Installation
Details
for
Outdoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
10
Courtesy of NationalSwitchgear.com

Li
4
-
’
JACK
-
GABLE
l
Dot
'
L
.
P
ING
EYE
SEE
FIG
.
16
FOR
PROCEDURE
FOR
ADDING
TO
OUTDOOR
SWITCHGEAR
l
,
<
•
TlNC
«
ANGl
E
o
It
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i
i
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>
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u
.
I
FLOOR
LINE
USE
ROLLERS
EACH
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MUST
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THE
FRONT
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MIDDLE
&
REAR
FLOOR
CHANNELS
.
TT
n
T
ITT
t
IN
THIS
DIRECTION
ONLY
ROLLERS
TYPICAL
JACKING
AREA
IF
USED
OPTIONAL
METHOD
FOR
MOVEMENT
LIFT
JACKING
METHOD
0.00
POWER
-
VAC
EQUIP
.
DEVICE
PANEL
^
K
^
BOLT
66
'
*
REQUIRED
AS
MINIMUM
AISLE
SPACE
.
FOR
BREAKER
^
REMOVAL
>
FRONT
ANCHOR
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94.00
FINISH
FLOOR
j
^
POWER
-
VAC
EQUIP
.
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FRAME
FINISH
FLOOR
>
3
0
o
SWITCHGEAR
PAD
0
)
REAR
PAD
&
-
J
1
LINE
35
’
*
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FOR
REAR
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COVFRS
5
EL
-
m
-
i
-
4
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f o
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'
-
-
t
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IN
CONCRETE
ANCHORS
\
USE
EXPANSION
NBOLTSi
C
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:
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4
"
CHANNEL
SWITCHGEAR
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2
2.00
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<
3
.
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>
11
.
•
M
s
2.00
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-
POWER
-
VAC
FLOOR
FRAME
.
38
r
(
N
ALTERNATE
ANCHORING
METHODS
SWITCHGEAR
PAD
FINISH
FLOOR
PAD
O
SEE
NOTE
#
1
FINISH
FLOOR
%
p
$
M
.
J
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00
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6
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I
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.
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.
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.
.
.
&
REAR
2.62
V
MAX
.
r
FINISH
FLOOR
LINE
r
THE
FINISHED
FLOOR
PAD
MUST
PROJECT
t
*
66
INCHES
BEYOND
THE
FRONT
OF
THE
P
/
V
.
AM
-
-
iT
^
Voi
*
EQUIPMENT
DEVICE
PANEL
.
THE
ELEVA
-
•
*
f
-
.
V
T
TION
MUST
BE
LEVEL
WITH
THE
BOTTOM
OF
THE
P
/
V
FLOOR
FRAME
AND
SWITCH
-
GEAR
PAD
.
-
B
-
TYPICAL
FOR
CONDUIT
LEADS
VIEW
Installation
Details
for
Outdoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
(
Continued
)
Fig
.
6
11
Courtesy of NationalSwitchgear.com

I
1
-
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.
LIFT
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v
:
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;
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f
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OR
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SPREADER
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r
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S
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ft
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r
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u
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ASM
.
AISLE
ASM
{
-
COMPLEX
OF
TWO
OR
MORE
AISLE
ASM
S
WITHOUT
BUBBLE
ADDED
ON
Fig
.
7
Installation
Details
for
Outdoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
with
Protected
Aisle
7
I
T
12
Courtesy of NationalSwitchgear.com

>
4
>
CHANNEL
END
CAP
*
c
4
ROOF
CAP
*
ROOF
CAP
*
*
END
CAP
-
CHANNEL
ri
END
CAP
.
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f
S
L
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PH
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LINE
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SPLIT
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-
E
HINGEC
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METAL
CLAD
EQUIPMENT
GET
.
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TYP
.
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SECTION
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JOINT
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.
AISLE
t
-
FRONT
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TRIM
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112.00
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f
M
/
C
M
/
C
FRONT
EXTENSION
FRONT
u
L
BUS
/
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LINE
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/
C
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35
v
•
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FINISH
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-
/
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AISLE
EXTEN
.
SECTION
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ELEVATION
VIEW
OF
PROTECTED
AISLE
,
METAL
CLAD
EQUIPMENT
WITH
AISLE
EXTENSION
TOTAL
INSTALLATION
OPTIONAL
ASM
.
VIEW
t
AISLE
FLOOR
f
METAL
CLAD
\
s
EQUIPMENT
FLOOR
FINISH
FLOOR
DETAIL VIEW
r
ROOF
CAP
*
'
I
I
CHANNEL
*
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CAP
END
CAP
*
ROOF
i
i
,
*
CHANNEL
END
CAP
.
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ROOF
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i
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A
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PRESS
TITE
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7
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END
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J
O
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ANGLE
PROTECTED
AISLE
•
AISLE
EXTENSION
S
a
METAL
CLAD
EQUIPMENT
TYP
SEALING
&
ROOF JOINT
DETAIL
S
fN
GASKET
L
o
CLEAR
SEAL
BEAD
ROOF
CAP
'
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CAP
f
^
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CAP
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END
CAP
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#
r
-
~
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END
CAP
ROOF
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UH
PLAN
VIEW
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PROTECTED
AISLE
,
METAL
CLAD
EQUIPX
WITH
AISLE
EXTENSION
UNIT
LINE
TYP END
CAP
&
ROOF
CAP
INSTALLATION
SEE
FIG
.
17
FOR
PROCEDURE FOR
ADDING
TO
PROTECTED
AISLE
SWITCHGEAR
ROOF
CAP
*
AISLE
FLOOR
LINE
r
FLOOR
TIE
PLATE
SPLIT
•
CHANNEt
END
CAP
,
END
CAP
*
FINISH
FLOOR
LINE
•
CORNER
END
CAP
AISLE
FLOOR
SECTIONB
~
B
TYP
FLOOR
JOINT
DETAIL
Installation
Details
for
Outdoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
with
Protected
Aisle
(
continued
)
Fig
.
7
13
Courtesy of NationalSwitchgear.com

•
i
:
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CAP
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.
r
-
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COMMON
AISLE
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METAL
CLAD
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SO
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r
END
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CHANNEL
END
CAP
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.
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’
CORNER
END
CAP
SEE
FIG
.
17
FOR
PROCEDURE
FOR
ADD
-
ING
TO
COMMON
AISLE
SWITCHGEAR
-
F
_
C
COMMON
AISLE
FLOOR
—
SECTION
c
D
-
D
VIEW
VIEW
TYP
WITH
BUBBLE
TYP
TYP
FLOOR
JOINT
DETAIL
Installation
Details
for
Outdoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
with
Aisle
Extension
Fig
.
8
.
14
Courtesy of NationalSwitchgear.com

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<
N
O
00
I
00
HINGED
PANEL
]
•
U
-
BOLTED
PANEL
BOLTED
PANEL
UNIT
LINE
SHIPPING
K
VIEW
TYP
SECTION
&
ROOF JOINT
DET
.
I
^
AISLE
FLOOR
LINE
^
FINISH
FLOOR
L
AISLE
BUBBLE
AISLE
SECTIONS
AS
REQUIRED
PER
i
INSTALLATION
J
-
J
SEE SHT
#
1
Installation Details
for
Outdoor
Power
/
Vac
*
Metal
-
Clad
Switchgear
with Aisle Extension
(
continued
)
Fig
.
8
.
TOOLS
REQUIRED
After
final
installation
the
device
doors
of
both
indoor
and outdoor
switchgear
may
need
an
alignment
adjustment
.
The
procedure
for
aligning
device
doors
is
outlined
below
.
1
—
12
"
pry
bar
1
—
5
lb
.
soft face
mallet
Fig
.
B
Fig
.
C
Fig
.
D
Fig
.
A
FIGS
.
C &
D
These
figures
illustrate
the
procedure
for
adjusting
a
door
which is
close
at
the
bottom
and
at
the
upper
right
corner
.
To
move
the door
up
and the bottom
to
the
right
,
place
a
pry
bar
behind
the
hinge
near
the bottom
of
the door
and
pull
forward
as
shown
in
Fig
.
C
.
Extreme
caution
must
be
used
not to
spring
the
hinge
.
To
move
the
top
of
the door
to
the
left
,
place
a
pry
bar
between
the
frame
and door
,
pull
to
the
left
and
lightly
tap
the
hinge
near
the
top
as
shown
in
Fig
.
D
.
Adustments
are
best done
a
little
at
a
time
to
avoid
springing
the
hinge
.
FIGS
A
&
B
These
figures
illustrate
the
procedure
for
adjusting
a
door
which
is
close
at
the
top
and
at
the lower
right
corner
.
To
move
the door down
and the
top
to
the
right
,
place
a
pry
bar
behind
the
hinge
near
the
top
of
the door
and
pull
forward
as
shown
in
Fig
.
A
.
Extreme
caution
must
be
used
not
to
spring
the
hinge
.
To
move
the bottom
of
the door
to
the
left
,
place
a
pry
bar
between
the
frame
and
door
,
pull
to
IP
the
left
and
lightly
tap
the
hinge
near
the
bottom
as
shown
in
Fig
.
B
.
Adjustments
are
best
done
a
little
at
a
time
to
avoid
springing
the
hinge
.
15
Courtesy of NationalSwitchgear.com

<
1
oo
ON
00
ON
op
UU
1
—
Primary
Bus
2
—
Breaker
Compartment
3
—
Load Take
-
Offs
4
—
Secondary
Compartment
Side
Section
View
Power
/
Vac
*
Metal
-
Clad
Switchgear
U
oo
m
00
ON
00
o
oo
•
^
I
—
Lift
Truck
2
—
Breaker
3
—
Rails
4
—
Interlock
Power
/
Vac
*
Breaker
and
Lift
Truck
Courtesy of NationalSwitchgear.com

f
CO
«
r
>
oo
ON
00
00
Li
-
Remote
Racking
Operator
Fig
.
11
DESCRIPTION
Each
unit
is
made
up
of
a
secondary
enclosure
and
a
primary
enclosure
as
shown
in
Fig
.
9
.
BREAKER
REMOVABLE
ELEMENT
SECONDARY
ENCLOSURE
The
removable
element
consists
of
a
Power
/
Vac
*
circuit
breaker
which
includes
an
operating
mechanism
,
interlocks
,
primary
and
secondary
disconnecting
devices
.
The
Power
/
Vac
*
breakers
are
equipped
with
wheels
for
easy
movement
along
the
floor
.
A
lift
truck
(
Fig
.
10
)
is
provided
for
insertion
and
removal
of
the
circuit
breaker
from
the
metal
-
clad
unit
.
The
secondary
enclosure
is
located
at
the
front
of
the
unit
where
the
breaker
is
withdrawn
.
This
enclosure
consists
of
a
compartment
with
a
hinged
panel
upon
which
are
mounted
the
necessary
instruments
,
control
and
protective
devices
.
The
terminal
blocks
,
fuse
blocks
,
and
some
control
devices
are
mounted
inside
the
enclosure
on
the
side
sheets
and
on
the
internal
device
panel
.
A
wiring
space
is
provided
across
the
top
of
the
unit
to
run
wires
between
vertical
sections
.
Power
/
Vac
*
circuit
breakers
of
the
same
rating
are
inter
-
changeable
in
their
corresponding
metal
-
clad
units
.
An
interference
interlock
is
provided
on
the
rear
of
each
circuit
breaker
to
insure
that
the
properly
rated
breaker
is
used
within
the
proper
metal
-
clad
unit
.
(
See
OPERATION
—
INTERFERENCE
INTERLOCK
,
FIGURE
44
.
PRIMARY
ENCLOSURE
The
primary
enclosure
contains
the
high
voltage
equip
-
ment
and
connections
.
It
consists
of
the
breaker
compart
-
ments
,
the
bus
compartment
,
the
cable
termination
com
-
partment
,
and
auxiliary
compartments
for
voltage
and
control
power
transformers
.
Each
of
these
compartments
is
separated
from
the
others
by
metal
barriers
for
reliability
and
safety
.
Interference
Interlocks
(
Fig
.
44
)
are
provided
on
the
metal
-
clad
unit
to
permit
only
the
circuit
breaker
with
the
correct
voltage
,
continuous
current
,
MV
A
and
momentary
rating
to
be
inserted
.
For
a
detailed
description
of
the
Power
/
Vac
*
breaker
and
its
operation
,
the
breaker
instruction
book
GEK
39671
should
be
consulted
.
BREAKER
LIFT
TRUCK
For
ease
of
breaker
handling
during
installation
and
removal
,
a
breaker
lift
truck
is
furnished
as
a
standard
17
Courtesy of NationalSwitchgear.com

accessory
with
each
Power
/
Vac
*
switchgear
order
(
Fig
.
10
)
.
This
accessory
device
is
used
to
elevate
the
breaker
from
the
floor
or
working
platform
to
the level
of
the
tracks
in
the
switchgear
cubicle
.
Docking
of
the
lifting
device
rails
to
the
switchgear
tracks
is
provided
for
maximum
safety
.
(
See
OPERATION
REMOVAL
,
PAGE
36
OR
GEK
90214
)
.
BREAKER
INSTALLATION
AND
BREAKER
RACKING MECHANISM
When
installed
in
the
switchgear
cubicle
,
the
removable
element
is
supported
by
two
horizontal
steel tracks
,
one
on
each
side
of
the
cubicle
.
The
racking
mechanism
moves
the
breaker
element
along
these
tracks
between
the
connected
and
test
positions
.
This
mechanism
consists
of
heavy
-
duty
steel
jack
screws
which
carry
nuts
that
engage
the
sides
of
the
removable element
.
The
racking
mechanism
may
be
man
-
ually
operated
with
the
racking
handle
which
is furnished
with
each
equipment
.
The
breaker
cannot
be moved between the connected
and
test
/
disconnect
positions
unless
it
has been
tripped
.
The
breaker
cannot
be
closed unless
it
is
in
the connected
or
test
/
disconnect
position
.
For
a
detailed
explanation
of
the
racking
mechanism
refer
to
description
under
OPERATION
—
CLOSED
DOOR
BREAKER
RACKING
,
PAGE
39
.
1
—
1200
AMP
REMOTE RACKING
OPERATOR
The
optional
electrically
operated
racking
device
(
see
Fig
.
11
)
provides
a
convenient
means
for
racking
a
breaker
be
-
tween
the connected
and
test
positions
from
a
remote
loca
-
tion
.
It
is
easily
mounted
to
the
breaker
unit
front
door
and
is
designed
for
quick
transfer
between
units
.
The
remote
racking
operator
is furnished
in
two
operat
-
ing
voltage
versions
.
The
115
V
AC
,
50
/
60
hertz model has
a
four foot
electrical
cord
with
standard three
prong
plug
to
fit
a
grounded
receptacle
or
extension
cord
.
The
230
VAC
,
50
/
60
hertz model has
a
three
wire
four foot
cord
to
which
the
purchaser
applies
his
standard
plug
.
The
remote
racking
operator
is
provided
with
a
two
posi
-
tion
directional switch
,
an
“
On
-
Off
’
circuit
breaker and
a
push
button control box
attached
with
a
30
foot
extension
cord
.
2
—
2000
AMP
Instructions
for
the
remote
racking
operator
are
found
in
GEK
86130
(
115
VAC
)
&
GEK
86131
(
230
VAC
)
.
PRIMARY
DISCONNECTS
The
1200
and
2000
ampere
primary
disconnects
consist
of
two
rows
of
silver
-
plated
copper
fingers
mounted
on
either
side
of
the
circuit
breaker
studs
.
These
fingers
are
held
in
place
with
a
spider
which
positions
the
fingers
and
fastens
them
to
the
breaker
.
Wipe
pressure
is
obtained
by
tension
springs
between the
rows
of
fingers
which
pull
them
to
-
gether
.
When
the
circuit
breaker
is connected
to
the metal
-
3
_
3000
AMP
Primary
Disconnects
18
Courtesy of NationalSwitchgear.com

clad
studs
,
the
spring
force
on
the
fingers
is
divided
between
the
breaker
stud
and
metal
-
clad
studs
.
See
Fig
.
12
.
On
3000
ampere
primary
disconnects
,
silver
-
plated
copper
fingers
are
positioned
in
a
circular
configuration
and
are
supported
by
a
non
-
magnetic
spider
.
This
spider
spaces
the
fingers
equally
around
the
breaker
stud
and
fastens
them
to
the
end
of
the
stud
.
The
fingers
are
held
in
contact
with
the
breaker
stud
by
a
stainless
steel
garter
spring
.
A
second
garter
spring
on
the
outer
end
of
the
finger
provides
contact
pressure
when
the
finger
assembly
is
connected
to
the
tube
in
the
metal
-
clad
unit
.
See
Fig
.
12
.
PRIMARY
TERMINATION
SPACE
The
primary
termination
space
of
each
breaker
unit
is
isolated
from
the
other
equipment
by
metal
barriers
.
Space
is
provided
in
this
compartment
for
connecting
the
pur
-
chaser
’
s
primary
cable
by
means
of
potheads
or
clamp
-
type
terminals
.
Two
-
hole
NEMA
drilling
for
two
cables
per
phase
is
provided
at
all
cable
connection
points
.
In
double
breaker
vertical
sections
,
a
steel
duct
serves
as
a
pull
-
box
and
barrier
to
separate
the
two
outgoing
cable
circuits
.
t
The
primary
termination
space
of
a
unit
is
accessible
by
removal
of
the
bolted
rear
cover
.
BUS
COMPARTMENT
The
main
buses
are
enclosed
in
a
metal
compartment
with
removable
front
covers
to
provide
accessibility
.
The
bus
is
supported
and
insulated
by
molded
glass
-
reinforced
polyes
-
ter
barriers
which
are
flame
retardant
and
track
resistant
.
Polyester
supports
with
porcelain
sleeves
may
be
furnished
as
a
customer
option
in
5
and
15
kV
equipment
.
Bus
bars
are
insulated
with
an
extruded
thermoplastic
insulation
sleeving
or
an
applied
epoxy
insulation
using
the
fluidized
bed
process
.
All
bolted
joints
have
silver
-
to
-
silver
connections
for
low
contact
resistance
.
Most
joints
are
in
-
sulated
with
a
molded
polyvinylchloride
boot
.
VOLTAGE
TRANSFORMERS
Voltage
transformers
are
located
in
an
auxiliary
unit
.
Up
to
three
transformers
can
be
mounted
on
a
movable
carriage
equipped
with
primary
and
secondary
disconnect
-
ing
devices
.
When
the
voltage
transformers
are
discon
-
nected
,
they
are
at
a
safe
striking
distance
from
all
live
parts
of
the
switchgear
.
In
addition
,
a
grounding
device
is
provided
which
contacts
the
fuses
when
the
voltage
transformers
are
disconnected
,
effectively
discharging
the
transformers
.
In
this
position
the
transformer
fuses
may
be
safely
removed
and
replaced
.
A
barrier
mounted
at
the
rear
of
the
carriage
moves
with
the
carriage
to
a
position
in
front
of
the
station
-
ary
part
of
the
primary
disconnect
device
,
providing
a
safe
striking
distance
from
all
live
parts
.
See
Fig
.
14
.
CURRENT
TRANSFORMER
COMPARTMENT
Current
transformers
are
mounted
over
the
primary
bushings
in
the
rear
of
the
breaker
compartment
and
are
isolated
from
the
breaker
by
the
shutter
barrier
.
They
are
front
-
accessible
by
removal
of
the
shutter
barrier
.
The
equipment
must
be
de
-
energized
before
any
component
is
touched
or
serious
injury
could
result
.
CURRENT
-
LIMITING
FUSES
AND
CONTROL
POWER
TRANSFORMER
Current
-
limiting
fuses
with
high
interrupting
rating
are
sometimes
used
in
metal
-
clad
switchgear
to
protect
small
transformers
or
circuits
where
circuit
breakers
cannot
be
economically
or
functionally
justified
.
Fig
.
15
Control
Power
Transformer
Drawout
Carriage
Voltage
Transformer
Drawout
Carnage
19
Courtesy of NationalSwitchgear.com

The
fuses
are
mounted
on
a
movable
carriage
equipped
with
primary
and
secondary
disconnecting
devices
.
Single
phase
control
power
transformers
of
15
kVA
and smaller
and
their
secondary
breaker
are
mounted
on
the
carriage
with
the
fuses
.
See
Fig
.
15
.
Larger
control
power
transformers
,
up
to
37.5
kVA
single
phase
or
45
kVA
3
phase
,
are
located
in
the
cable
compartment
behind their
associated
fuse
carriage
and
their
secondary
breaker
is
located
behind
a
hinged
cover
on
the
upper
cable
compartment
.
When
the
fuses
are
disconnected
,
they
are
at
a
safe
strik
-
ing
distance
from
all
live
parts
of
the
switchgear
.
In
addition
a
grounding
device is
provided
which
contacts
the
fuses
after
they
are
disconnected
,
effectively
removing
any
static
charge
from
the
fuses
.
In
this
position
the
fuses
may
be
safely
re
-
moved and
replaced
.
The
disconnecting
devices
are
capable
of
interrupting
transformer
magnetizing
current
,
but
should
not
be used
to
interrupt
load
current
.
Mechanical
or
key
interlocks
are
applied
to
prevent
operating
the disconnect
-
ing
device
while
the
load
is connected
.
This is
generally
ac
-
complished
by
interlocking
so
that
the
transformer
secon
-
dary
breaker
must
be
locked
in
the
open
position
before
the
disconnecting
device
can
be connected
or
disconnected
.
Current
-
limiting
fuse
and
control
power
transformer
roll
-
outs
are
located
in
auxiliary
units
.
The
key
for
the
dummy
element
interlock
will
usually
be
obtained
from
a
transfer
lock
at
which
all
the
source
keys
are
accumulated and
captured
before
the
dummy
element
key
can
be obtained
.
<
GROUND
AND
TEST DEVICE
This
device
is
designed
to
make either
the
upper
or
lower
primary
conductors
in
the breaker
unit
readily
accessible
.
The
type
PVV
manual
ground
and
test
device
,
provides
a
convenient
means
of
grounding
the cables
or
the bus
in
order
to
safeguard
personnel
who
may
be
working
on
the
cables
or
the
equipment
.
The
device
can
be
used
for
apply
-
ing
power
for
high
-
potential
tests
or
for
fault location
.
It
can
be used
to
measure
insulation resistance
(
megger
)
.
By
using
voltage
transformers
,
it
can
also
be
used
for
phasing
out
cables
.
Refer
to
the
instruction
book
provided
for
this
device
.
If
“
hotsticks
”
are
used
,
they
should
be
insulated
.
See
GEK
39686
.
CAUTION
—
NOTE
THAT
THE
MAIN
SWITCH
-
GEAR
BUS
IS CONNECTED
TO
THE
LOWER
STUDS
WHEN
THE
DEVICE
IS
INSTALLED
IN
AN
UPPER
COMPARTMENT
AND
TO
THE
UPPER
STUDS
WHEN
THE
DEVICE IS INSTALLED
IN
A
LOWER
COMPARTMENT
.
Refer
to
Fig
.
9
,
which
shows
a
side
section
view
of
the
switchgear
,
for
clarification
.
DUMMY
REMOVABLE
ELEMENT
,
TYPE
PVD
(
GEK
39678
)
#
In
addition
to
the
device
described above
,
there
is
avail
-
able
the
deluxe
power
-
operated
type
GMV
device
which
has
a
self
-
contained
bus
or
line selector
switch
and
a
separately
controlled
,
power
operated
,
three
-
phase
grounding
switch
.
The
GMV
device is
a
dead
-
front
design
with mechanical
and
electrical interlocks
,
provision
for
remote
control and
plug
-
type
cable
testing
and
phasing
.
The
primary
conductors
re
-
quired
for
grounding
are
self
-
contained
,
with
no
external
cable
connections
required
.
The
GMV
device
is
designed
for
maximum
safety
to
personnel
while
accomplishing
all
the
basic
required
grounding
and
testing
functions
.
Refer
to
the
instruction
book
GEK
39684
for
more
details
.
Dummy
removable elements
are
used
as
a
means
of
isolating
circuits
or
bus
sections
where
operation
is
in
-
frequent
and
a
circuit breaker
cannot
be
economically
)
usti
-
fied
.
The
device
consists
of
a
circuit
breaker
mechanism
frame
and
primary
insulator
supports
with six
primary
studs
including
disconnecting
devices
.
Copper
rods
are
bolted
in
the
location
normally
occupied
by
vacuum
inter
-
rupters
.
The
stationary
structure
is
the
same
as
for
a
circuit
breaker
.
When
the
device is
fully
racked
in
,
it
connects
the
top
set
of
metal
-
clad
primary
disconnects
to
the bottom
set
.
An
interlock
system
,
consisting
of
a
side extension
identi
-
cal
to
the
positive
interlock
extension
of
a
standard
circuit
breaker
when
the
breaker
is closed
,
insures
that
the
dummy
element
cannot
be
racked
in
or
out
unless
all
sources
to
which
it
may
connect
are
de
-
energized
.
A
key
lock is
provided
on
the
dummy
element
.
It
takes
a
key
which becomes
available
only
when
all
sources
to
which
the
dummy
might
connect
are
de
-
energized
.
When
the
key
is available
,
the
key
interlock
can
be
operated
to
withdraw
the
positive
interlock
extension
.
The
dummy
element
now
looks
like
an
open
breaker
,
Mnd
it
can
be
racked
in
or
out
.
As
long
as
the
positive
interlock extension is
withdrawn
,
the
key
is
captured
and
it
cannot
be released
unless
the
dummy
element
is
in
the
CONNECTED
or
TEST
position
or
com
-
pletely
withdrawn
.
Hence
,
the
sources
to
which
the
dummy
may
connect
cannot
be
re
-
energized
until
the
dummy
is
in
one
of
these three
positions
.
20
Courtesy of NationalSwitchgear.com