ITE K-3000 - Circuit Breaker Device Operations; Electro-Mechanical Overcurrent Trip Devices; Solid State Overcurrent Trip Devices

1.1
.
7
-
4
LOW
-
VOLTAGE
POWER
CIRCUIT
BREAKERS
S
/
I
or
Disconnect
Switch
(
Figure
1
,
Item
10
)
he
motor
disconnect
switch
is
a
double
pole
,
single
-
w
toggle
type
switch
connected
in
series
with
the
rging
motor
circuit
and
is used
to
disconnect
the
or
from
the
voltage
source
.
This switch
is
used
(
1
)
,
in
it
is
desirable
to
prevent
automatic
recharging
of
closing
springs
just
prior
to
taking
the
circuit
aker
out
of
service
for
maintenance
and
(
2
)
,
for
itrol
wiring
dielectric
test
.
The
motor
must
be
dis
-
inectml
for
Hie
control
wiring
dielectric
test
rind
<
fricul
Close
Push
Button
(
Figure
I
,
Item
2
2
]
The
etprfrirol
close
push
button
is used
to
electrical
!
/
ise
the circuit
from
the escutcheon
.
Hus
contact
n
nnected
in
series
with
the latch release coil
.
Energiz
-
}
the latch release
coil
allows
the
charged springs
to
>
se
the circuit breaker
.
anual
Close
Lever
(
Figure
)
,
Item
6
)
The
manual
close
lever
is
provided
on
all
circuit
cakers
to
provide
a
safe
means
of
closing
the
euker
without
<
ontrol
power
.
The lever
is
provided
itit
a
ring
to
winch
a
lanyard
should be attached
for
osing
the breaker
at
a
safe
distance
.
aching
Mechanism
(
Drawout Breaker
)
racking
mechanism
is used
lo
move
Ihe circuit
to
any
one
of
its
three
positions
—
"
CON
-
"
TE
5
T
"
or
"
DISCONNECTED
.
"
All
of
these
ositions
are
attainable
with
the
cubicle
door
closed
r
opened
.
The breaker
can
be
closed
only
when
the
Irawout
levin
{
1
Figure
1
)
is
up
and
when
up
,
the
riink
I
I
l
:
Figum
1
)
cannot
be
turned
.
fhe
circuit
bic
-
aker
must
be
in
the
OPEN
"
position
>
efore
lever
(
1 5
,
Figure
\
)
can
be
pushed
down
.
In
>
rder
to
move
the
circuit
breaker
from
one
position
to
mother
,
the
lever
must
be
pushed
down
and the
crank
urned
;
once
turning
begins
,
the
lever
will
stay
down
jntil
another
position
is
reached
and
the
lever
will
map
up
,
preventing
additional
turning
,
until
the
lever
s
again
pushed
down
.
When the
padlocking
device
is
locked
,
the
lever
(
1 5
)
is
locked
in
the
up
position
preventing
movement
of
the
racking
mechanism
.
Figure
1
shows
the
breaker
in
the
fully
withdrawn
position
.
There
are
two
sets
of
indicator lines
on
the
left
side
of
the
breaker
to
show
breaker
position
.
One
set
is
visible
with
the
switchboard
door
closed
,
the
other
visible when
the door
is
open
.
device
must
be
properly
set to
provide
adequate
pro
-
tection
for
an
electrical
system
.
Three
adjustment
screws
on
the
bottom
of
the
device
provide
independent
con
-
trol
of
the
long
-
time
pickup
,
instantaneous
pickup
and
amount
of
time
delay
.
The
nameplate
of
this
device
shows
the
setting
of
these
adjustments
and
the
range
of
settings
which
are
available
.
For
information
on
the
time
-
current
characteristics
of
this
device
,
request
a
copy
of
TD
-
6693
.
(
B
)
Type
OD
-
400
Selective
Overcurrent
Trip
Device
.
Ihe
type
OD
-
4
CJO
overcurrenl
trip
device
,
for
selective
ti
«
!
;
ljiiig
npphi
»
it
»
on
>
provides
long
-
time
delay
and
shmt
time
delay
flipping
.
Independent
adjustment
of
both
pickup
and
time
delay
is
provided
f o r
both
types
of
flipping
.
The
nomenlafe of
this
device
shows
the
sellings
which
are
available
.
For
information
on
the
time
current
characteristics
of
this device
,
request
a
copy
of
TD
-
6694
.
(
C
)
See
Table
I
for
complete
list
of
Electro
-
Mechan
-
ical
overcurrent
trip
devices available
.
nrf
rjf
V
>
u
at
761
)
V
tie
.
r
.
n
Power
Shield
114
Solid
State
Overcurrent
Trip
Devices
Type
K
-
30005
and
K
-
4000
S
Circuit
Breakers
(
See
Fiyure
12
)
This
device
includes the
power
supply
sensors
,
over
-
current
sensors
,
Power
Shield
solid
state
logic
assembly
,
magnetic
latch
and the
interconnecting
wiring
.
Each
phase
of
the
circuit
breaker
has
a
power
supply
sensor
and
overcurrent
sensor
.
The
trip
elements that
are
avail
-
able
are
:
long
-
time
delay
,
instantaneous
,
short
-
time
delay
and
ground
fault
.
On
a
3
-
phase
4
-
wire
system
,
an
additional
remote
sensor
,
mounted
in
the
neutral
bus
,
is
required
for
complete
ground
fault
protection
.
flie
logic
:
assembly
is
mounted
near
the
front
of
the
ciicuit
breaker
and
with
the
cubicle door
open
the
overcurrent
control
panel
is
readily
accessible
,
device
must
be
properly
set
,
as
required
by
individual
circuit
conditions
,
to
provide adequate
protection
for
an
electrical
system
.
The
movable
plugs
on
the
control
panel
provide
independent
control
of
the
long
-
time
,
short
-
time
,
instantaneous
and
ground
fault
pickup
and
amount
of
time
delay
.
The
overcurrent
device
,
with
the
exception
of
ground
fault
,
will
trip
at
the
value
of
the
AMPERE
TAP
setting
times
the
plug
setting
of
the
various
pickup
elements
.
The
ground
fault
trip
value
will
be
the
plug
setting
value
times
100
,
as
indicated
on
the
nameplate
.
(
A
)
Type
SS
-
3
.
This
trip
device
is
for
general
pur
-
pose
application
.
It
provides
long
-
time
delay
tripping
on
moderate
overcurrents
,
which
are
above
the
long
-
time
pickup
settings
,
and
instantaneous
tripping
on
fault
currents
above
the instantaneous
trip
setting
.
For
infor
-
mation
on
the
time
-
current
characteristics
of
this
device
,
request
a
copy
of
TD
-
6966
.
(
B
)
Type
SS
-
4
Selective
Overcurrent
Trip
Device
.
This
trip
device
,
for
selective
tripping
application
,
pro
-
vides
long
-
time
delay
and
short
-
time
delay
tripping
.
For
information
on
the
time
-
current
characteristics
o
this
device
,
request
a
copy
of
TD
-
6967
.
(
C
)
Type
$
S
-
5
Triple
-
Selective
Overcurrent
Trip
De
-
This device
includes
the
trip
elements
found
in
bot
the
SS
-
3
and
SS
-
4
;
i
.
e
.
f
long
-
time
delay
,
short
-
time
L
icD
,
L
M l
.
J
i v
This
OPERATION
OF
DEVICES
Electro
-
Mechanical
Overcurrent
Trip
Devices
Type
K
-
3000
and
K
-
4000
Circuit
Breakers
'
^
ures
10
and
1 1
)
K
)
Type
OD
-
300
General
Purpose
Overcurrent
Trip
_
evice
.
The
type
OD
-
300
overcurrent
trip
device
,
for
general
purpose
applications
,
provides
long
-
time
delay
tripping
on
moderate
overcurrents
which
are
above the
long
-
time
pickup
setting
;
and
instantaneous
tripping
on
fault
currents
above
the
instantaneous
trip
setting
.
This
vice
.
Courtesy of NationalSwitchgear.com