GE AKD-8 User manual

GE
Electrical
Distribution
&
Control
8
APPLICATION
GUIDE
•
• •
••
•
*
•••
••
•
••
•
•• • • • • ••
•
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•
Courtesy of NationalSwitchgear.com

c
•
Table
of
Contents
3
General
description
Safety
and
reliability
features
4
-
8
POWER
LEADER
Power
Management
System
MicroVersaTrip
Plus
and
PM
Trip
Units
9
10
Application
data
Accessories
Electrical
characteristics
Repetitive
duty
Design
considerations
Time
current
tripping
characteristics
The
Load
Center
Principle
Power
circuit
breaker
selection
tables
Ground
detection
considerations
Automatic
transfer
(
throwover
)
equipment
11
12
-
13
14
14
15
16
-
17
18
-
19
20
-
23
24
-
25
26
27
Sizing
and
dimensional
data
Switchgear
layout
and
sizing
POWER
LEADER
instrument
panel
Floor
plans
and
side
views
28
-
35
36
-
37
3843
4447
Guideform
Specifications
48
Standards
and
references
1
Courtesy of NationalSwitchgear.com

{
'
Courtesy of NationalSwitchgear.com

General
description
circuit
breakers
,
instrumentation
,
and
other
auxiliary
circuit
protective
devices
in
single
or
multiple
source
configurations
.
AKD
-
8
switchgear
can
be
applied
either
as
a
power
distribution
unit
or
as
part
of
a
unit
substation
in
indoor
or
outdoor
construction
.
AKD
-
8
switchgear
sections
are
provided
in
either
22
”
,
30
”
or
38
”
widths
.
.
AKD
-
8
Switchgear
is
industrial
-
duty
equip
-
ment
built
to
ANSI
standards
and
uses
100
%
rated
Low
-
Voltage
AKR
Power
Circuit
Breakers
.
It
is
designed
to
have
more
mar
-
gin
within
its
ratings
to
provide
maximum
continuity
of
service
for
those
applications
subject
to
severe
duty
;
such
as
repetitive
switching
encountered
with
motor
starting
,
power
factor
correction
,
demand
control
,
load
shedding
,
etc
.
It
is
designed
to
be
operated
in
an
ambient
temperature
between
-
30
°
C
and
40
°
C
.
Type
AKR
low
-
voltage
powrer
circuit
breakers
are
available
for
.
AKD
-
8
switchgear
in
six
frame
sizes
:
•
800
A
AKR
-
30
,
30
H
,
30
L
•
1600
A
AKR
-
50
,
50
H
•
2000
A
AKRT
-
50
H
•
3200
A
AKR
-
75
,
75
H
•
4000
A
AKR
-
100
•
5000
A
.
AKR
-
125
.
AKD
-
8
switchgear
is
manufactured
in
GE
’
s
ISO
9002
certified
facility
'
in
Burlington
,
Iowa
.
It
complies
with
.
ANSI
standards
C
37.20
.
1
and
NEMA
SG
-
5
,
and
it
is
UL
list
-
ed
to
standard
1558
,
file
no
.
E
76012
.
The
switchgear
has
been
conformance
tested
according
to
ANSI
C
37.51
.
A
major
factor
contributing
to
this
extended
continuity
'
of
service
is
the
availability
'
of
renewal
parts
complete
with
detailed
maintenance
instructions
and
original
equipment
documentation
.
From
a
coordination
standpoint
,
type
.
AKR
circuit
breakers
provide
full
selectivity
'
with
each
other
and
with
other
protective
devices
.
The
bus
sizing
is
based
on
temperamre
rise
rather
than
on
current
density
'
(
as
with
switchboard
construction
)
.
ANSI
standards
require
that
switchgear
operate
at
the
ratings
of
devices
installed
.
Switchgear
short
circuit
ratings
are
based
on
two
30
-
cycle
withstand
tests
with
15
-
sec
-
ond
interval
,
performed
at
15
%
power
fac
-
tor
and
635
Vac
maximum
.
For
switch
-
boards
,
a
single
3
-
cycle
withstand
test
at
20
%
power
factor
and
600
Vac
maximum
is
performed
.
.
All
breakers
can
be
equipped
with
current
limiting
fuses
.
AKRU
-
30
and
AKRU
-
50
are
prodded
with
integrally
mounted
fuses
,
while
a
separate
fuse
carriage
is
required
for
AKRT
-
50
H
,
.
AKR
-
75
,
.
AKR
-
100
,
and
AKR
-
125
.
Low
’
-
voltage
circuit
breakers
rated
800
/
1600
/
2000
amps
can
be
stacked
in
four
-
high
combinations
resulting
in
reduced
floor
space
requirements
.
The
11
-
gauge
,
bolted
modular
-
designed
steel
frame
permits
flexibility
in
arrangements
of
breakers
and
associated
components
.
AKD
-
8
switchgear
is
available
with
the
following
maximum
nominal
ratings
:
•
600
Vac
,
250
Vdc
•
5000
Aac
,
6000
Adc
•
50
/
60
Hz
•
2200
Vac
RMS
dielectric
•
200
kA
symmetrical
short
circuit
General
Electric
’
s
.
AKD
-
8
low
-
voltage
switchgear
can
help
you
meet
today
’
s
chal
-
lenges
for
greater
productivity
;
increased
operator
safety
'
and
improved
equipment
reliability
and
maintainability
;
.
AKD
-
8
switchgear
houses
low
-
voltage
power
Courtesy of NationalSwitchgear.com

Safety
and
reliability
features
Standard
and
optional
fea
tures
are
ava
ilable
with
AKD
-
8
switchgear
in
order
to
meet
the
increasing
industry
emphasis
on
system
reliability
and
operating
personnel
safety
:
n
•
Closed
-
door
operation
Breaker
compartment
doors
have
no
ventilation
openings
,
thus
protect
-
ing
operators
from
hot
ionized
gases
vented
by
the
breaker
during
circuit
interruption
.
•
Closed
-
door
drawout
True
closed
-
door
drawout
construction
is
standard
with
all
AKD
-
8
equip
-
ment
The
breaker
compartment
doors
remain
stationary
'
and
closed
while
the
breaker
is
racked
out
from
the
connected
position
,
through
test
,
to
the
disconnected
position
.
Doors
are
secured
with
nigged
14
-
tum
latches
.
•
Closed
-
door
control
circuit
accessibility
A
standard
slide
-
out
instrumentation
tray
is
located
above
each
breaker
compartment
,
minimizing
cross
-
hinge
wiring
.
When
required
,
indicating
lights
and
test
switches
can
be
mounted
on
the
front
of
the
tray
.
Fuses
for
close
and
trip
circuits
can
be
mounted
inside
the
tray
and
are
accessible
with
the
tray
pulled
out
.
Routine
wiring
inspections
and
fuse
checks
or
fuse
replacements
can
be
performed
with
the
breaker
compartment
door
closed
,
protecting
operators
from
energized
primary
circuits
.
•
Closed
-
door
trip
unit
setup
and
display
Optional
MicroVersaTrip
Remote
Display
provides
safe
,
closed
-
door
access
to
the
AKR
breaker
’
s
MicroVersaTrip
Plus
or
MicroVersaTrip
PM
trip
unit
metering
,
status
and
setup
functions
.
)
Courtesy of NationalSwitchgear.com

C
Easy
-
to
-
use
breaker
interlocking
and
locking
features
minimize
the
risk
of
operational
errors
:
•
Low
-
voltage
power
circuit
breaker
locking
.
As
a
standard
feature
,
the
low
-
voltage
power
circuit
breaker
can
be
padlocked
in
the
open
position
with
a
%
"
shank
padlock
to
prevent
unauthorized
closing
and
racking
.
•
Breaker
insertion
and
withdrawal
interlocks
Interlocks
prevent
racking
of
the
breaker
in
or
out
when
the
breaker
contacts
are
closed
.
Breakers
are
trip
free
when
not
in
the
connect
or
test
position
.
A
superior
bus
system
offers
different
levels
of
protection
:
•
Fully
tin
-
plated
copper
bus
Fully
tin
-
plated
copper
main
and
riser
bus
is
a
standard
feature
on
AKD
-
8
equipment
.
Tin
plating
provides
superior
corrosion
protection
,
especially
for
application
for
the
pulp
and
paper
and
waste
treatment
industries
where
corrosive
agents
rou
-
tinely
exist
GE
’
s
bus
bars
are
tin
-
plated
after
forming
and
punching
to
ensure
completely
plated
bolt
holes
and
bar
edges
.
Sliding
contact
surfaces
,
such
as
breaker
stab
tips
,
are
fully
silver
-
plated
.
Silver
-
plated
bolted
connections
are
avail
-
able
as
an
option
.
Bus
system
Bare
bus
is
provided
as
standard
on
AKD
-
8
switchgear
.
In
this
configuration
,
there
are
no
covers
to
remove
,
so
all
bus
connections
are
easily
accessible
for
maintenance
.
Note
that
a
horizontal
isolation
barrier
is
provided
between
the
vertical
buses
and
every
main
and
tie
breaker
for
added
safety
in
the
event
of
a
fault
.
An
insulated
/
isolated
bus
system
that
fully
insu
-
lates
the
horizontal
main
bus
with
a
fluidized
epoxy
coating
and
isolates
each
phase
of
the
vertical
riser
bus
is
available
as
an
option
.
Accessibility
to
main
bus
joints
is
provided
by
replace
-
able
covers
and
no
live
connections
are
reachable
from
the
rear
except
the
breaker
load
side
terminals
.
Bus
compartmentation
is
also
available
as
an
optional
feature
on
.
AKD
-
8
switchgear
.
Vertical
and
horizontal
busses
are
isolated
from
die
cable
com
-
partment
by
glass
reinforced
polyester
barriers
.
77
:
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Courtesy of NationalSwitchgear.com

Safety
and
reliability
features
(
continued
)
The
breaker
compartment
is
designed
to
provide
operator
and
system
safety
options
:
•
Isolated
breaker
compartment
Each
circuit
breaker
is
located
in
a
completely
enclosed
ventilated
compartment
with
grounded
steel
barriers
to
minimize
the
possibility
of
fault
communication
between
com
-
partments
.
A
breaker
position
switch
is
optionally
available
.
•
Safety
shutters
Safety
shutters
are
optionally
available
in
breaker
compart
-
ments
.
They
protect
operators
from
accidental
contact
with
live
conductors
when
the
breaker
Ls
withdrawn
.
Safety
'
shutters
are
provided
as
a
standard
feature
on
reverse
fed
breakers
.
•
Defeatable
door
interlock
This
option
prevents
inadvertent
opening
of
the
compart
-
ment
door
unless
the
breaker
is
in
the
disconnect
position
.
This
provision
is
made
for
authorized
defeat
of
intedock
.
•
Padlockable
door
latch
This
optional
feature
enables
padlocking
of
the
door
latch
in
order
to
prevent
unauthorized
entry
'
into
the
breaker
com
-
partment
)
•
Breaker
rejection
feature
A
rejection
system
is
provided
as
standard
in
each
breaker
compartment
to
prevent
the
insertion
of
a
breaker
with
inad
-
equate
short
circuit
and
/
or
incorrect
continuous
current
ratings
.
IF
®
•
Drawout
padlock
provision
A
mechanism
padlock
device
is
provided
as
standard
to
lock
out
the
drawout
mechanism
in
test
or
disconnect
position
.
This
provision
will
accept
up
to
three
padlocks
with
a
%
"
shank
.
•
Key
interlocks
This
option
provides
for
compulsory
locking
of
the
breaker
in
the
open
,
trip
-
free
position
w
'
hen
fully
connected
.
Applicable
schemes
would
be
mechanical
interlocking
of
two
breakers
so
only
one
can
be
closed
at
a
time
,
or
,
in
load
center
unit
sub
-
stations
,
interlocking
of
the
primary
'
switch
and
secondary
'
main
breaker
such
that
the
secondary
'
main
must
be
open
before
the
primary
switch
can
be
operated
.
Single
and
double
key
locks
are
available
.
Key
locking
does
not
prevent
operation
when
the
breaker
is
in
test
or
disconnect
position
.
m
70
.
Courtesy of NationalSwitchgear.com

Installation
and
maintenance
are
made
easy
with
these
design
features
:
•
Accessibility
Accessibility
to
equipment
compartments
provides
easy
main
-
tenance
of
the
breaker
compartment
area
and
control
circuit
elements
(
located
in
drawout
tray
)
,
as
well
as
convenient
inspection
of
the
bolted
bas
connections
.
r
)
v
*
/
t
{
*
!
r
.
•
Cable
space
Conduit
entrance
area
meets
NEC
]
requirements
.
Extended
depth
frame
options
are
available
in
7
"
and
14
"
sizes
for
appli
-
cations
requiring
additional
cable
space
.
•
Breaker
lifting
device
Installed
on
top
of
the
switchgear
,
this
rail
mounted
hoist
provides
the
means
for
installing
and
removing
breakers
from
the
equipment
.
This
is
a
standard
feature
on
outdoor
walk
-
in
construction
and
an
optional
feature
on
indoor
construction
.
•
Control
circuit
isolation
Control
wires
are
run
between
compartments
in
steel
riser
channels
O
.
Customer
terminal
blocks
are
located
in
metal
enclosed
wire
troughs
in
the
rear
cable
area
©
.
Intercubicle
wiring
is
run
in
a
wireway
on
top
of
the
switchgear
where
interconnection
terminal
blocks
are
located
©
.
Courtesy of NationalSwitchgear.com

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Safety
and
reliability
features
(
continued
)
GE
’
s
manufacturing
processes
and
testing
set
the
quality
standards
in
the
switchgear
industry
:
•
Paint
finish
AKD
-
8
switchgear
is
protected
by
the
“
E
-
coat
"
paint
system
consisting
of
a
“
cathodic
electrodepositioir
process
employing
the
same
principle
used
in
electroplating
:
An
electrically
charged
object
immersed
in
a
bath
of
oppositely
charged
particles
will
attract
and
become
coated
with
those
particles
.
In
the
process
,
switchgear
parts
are
conveyed
through
a
seven
-
stage
washing
process
,
where
they
are
thoroughly
cleaned
,
surface
prepared
,
chrome
-
sealed
and
thoroughly
rinsed
.
Next
,
the
parts
are
immersed
in
an
electrocoating
tank
,
where
they
receive
an
epoxy
7
coating
0.7
to
0.8
mils
thick
on
every
surface
.
After
a
rinse
,
the
parts
enter
a
curing
oven
,
where
the
coating
is
baked
,
fusing
it
to
the
metal
and
ensuring
a
hard
,
uniform
finish
.
The
resulting
ANSI
-
61
light
gray
paint
finish
far
exceeds
the
requirements
of
UL
1558
and
ANSI
C
37.20
.
1
,
which
requires
,
at
a
minimum
,
passing
a
200
-
hour
salt
spray
test
.
Periodic
testing
by
an
independent
laboratory
7
subjected
the
“
E
-
coat
”
to
1
,
000
hours
of
a
salt
spray
7
,
2
,
000
hours
in
a
humidity
cabinet
,
plus
acid
and
alkaline
resistance
tests
,
spot
and
stain
tests
,
marring
tests
and
impact
and
flexibility
tests
.
These
tests
proved
that
AKD
-
8
switchgear
can
handle
different
severe
operating
environments
.
V
•
Seismic
test
The
AKD
-
8
equipment
has
been
seismically
tested
for
Zone
4
to
certify
7
its
capability
7
to
withstand
the
most
severe
earthquake
conditions
and
that
it
meets
seismic
require
-
ments
of
the
USA
Uniform
Building
Code
.
•
Complete
and
accurate
documentation
The
AKD
-
8
design
makes
extensive
use
of
computer
-
aided
engineering
and
design
.
All
customer
documentation
is
generated
via
linked
engineering
and
production
systems
for
seamless
ordering
of
materials
and
manufacturing
of
parts
.
This
integration
and
linking
of
systems
assures
consistently
accurate
customer
and
manufacturing
documentation
and
optimized
equipment
designs
,
all
driven
by
the
engineers
system
inputs
.
Courtesy of NationalSwitchgear.com

POWER
LEADER
Power
Management
System
Power
management
at
its
best
The
POWER
LEADER
system
is
specifically
designed
to
grow
with
your
needs
.
Because
the
system
is
easily
expandable
,
you
can
add
to
its
capabilities
as
your
needs
grow
,
eliminating
the
risk
of
having
to
start
over
with
a
whole
new
system
sometime
in
the
future
.
Inside
every
switchgear
lineup
flow
’
s
a
large
amount
of
informa
-
tion
.
The
data
is
in
the
form
of
power
(
volts
,
amps
,
waveform
)
passing
through
the
equipment
.
With
the
proper
devices
,
you
can
selectively
access
this
wealth
of
information
,
and
use
it
to
become
more
efficient
and
more
productive
.
This
is
what
power
management
systems
are
all
about
With
a
system
in
place
you
can
benefit
from
:
•
Reduced
energy
'
costs
•
Less
downtime
•
Improved
predictive
maintenance
•
Faster
corrective
maintenance
•
Increased
safety
•
Higher
productivity
•
Improved
power
quality
’
As
newer
technologies
become
available
,
you
are
also
assured
of
a
convenient
cost
-
effective
migration
path
,
should
you
wish
to
upgrade
your
POWER
LEADER
system
.
The
POWER
LEADER
system
also
offers
the
components
nec
-
essary
to
monitor
,
protect
and
control
devices
and
equipment
operating
in
two
or
more
locations
,
giving
you
even
greater
free
-
dom
to
expand
your
system
.
Key
capabilities
include
:
•
System
monitoring
and
metering
•
.
Alarm
management
•
Reporting
and
trending
•
Power
distribution
and
device
control
•
Cost
management
•
Predictive
maintenance
•
Power
quality
analysis
•
Dynamic
,
real
-
time
graphic
display
’
s
of
component
status
and
operation
It
should
come
its
no
surprise
that
virtually
all
switchgear
is
now
shipped
with
power
management
features
.
What
began
as
an
option
is
fast
Incoming
an
absolute
necessity
.
The
POWER
LEADER
family
of
products
offers
all
the
power
management
benefits
stated
above
,
along
with
extensive
growing
capability
;
easy
upgrade
through
open
architecture
and
a
complete
range
of
services
such
as
technical
assistance
,
start
-
up
support
,
and
on
-
site
training
.
Courtesy of NationalSwitchgear.com