ABB VHK-R User Manual

ID
U
.
*
.
.
#
.
/
-
HU
Pago
9
MIPIP
ASEA
BROWN
BOVERI
3
.
When
the
springs
discharge
,
limit
switch
contact
"
LSb
"
closes
and
switch
contact
"
LSa
"
opens
.
ELECTRICAL
CHARACTERISTICS
OF
CONTROL
DEVICES
4
.
When
limit
switch
"
LSb
"
in
the
motor
circuit
closes
,
the
spring
charging
motor
is
energized
,
which
in
turn
recharges
the
closing
springs
.
For
operating
voltage
ranges
for
various
nominal
control
volt
-
ages
,
refer
to
Table
1
.
For
average
current
values
at
various
nominal
control
voltages
,
ref
er
to
Table
2
.
The
current
values
given
in
this
table
are
average
,
steady
state
values
and
momentary
inrush
currents
for
all
charg
-
ing
motors
and
AC
coils
are
approximately
six
to
eight
times
these
values
.
5
.
Whenthecircuit
breaker
closes
,
all
auxiliary
switch
"
b
"
contacts
open
and
all
auxiliary
switch
"
a
"
contacts
close
.
6
.
When
the
limit
switch
contact
"
LSb
"
closes
,
the
lockout
relay
coil
(
Y
)
is
energized
and
opens
lockout
relay
contact
"
Yb
"
,
which
deenergizes
the
latch
release
coil
(
X
)
.
Lockout
relay
contact
"
Ya
"
closes
,
which
seals
-
in
the
lockout
relay
coil
(
Y
)
as
long
as
the
"
close
"
contact
is
maintained
.
The
purpose
of
the
lockout
relay
coil
(
Y
)
is
to
prevent
pumping
of
the
closing
mechanism
when
closing
against
a
faulted
circuit
.
ELECTRICAL
OPERATING
SEQUENCE
Please
refer
to
the
specific
schematic
diagrams
and
other
opera
-
tional
information
furnished
with
your
order
.
7
.
After
the
breaker
has
closed
and
when
the
"
close
"
switch
is
released
by
the
operator
,
the
lockout
relay
coil
(
Y
)
is
deenergized
.
This
allows
the
normally
-
closed
lockout
relay
contact
"
Yb
"
to
close
,
and
the
normally
-
open
lockout
relay
contact
"
Ya
"
to
open
.
Figure
10
and
11
are
provided
as
typical
schematics
for
general
information
on
electrical
operation
.
DC
CLOSING
OPERATING
SEQUENCE
8
.
The
circuit
breaker
can
be
tripped
by
operation
of
the
trip
control
switch
which
energizes
the
circuit
breaker
trip
coil
(
TC
)
through
the
auxiliary
switch
"
a
"
contact
.
With
the
circuit
breaker
open
,
the
closing
springs
uncharged
,
and
the
control
power
source
energized
,
and
motor
disconnect
switch
closed
,
operation
occurs
as
follows
:
9
.
The
undervoltage
device
,
if
furnished
,
provides
a
direct
acting
lock
-
open
and
undervoltage
tripping
feature
.
This
device
must
be
energized
to
initially
close
the
breaker
,
and
also
to
maintain
the
breaker
in
a
closed
position
.
1
.
Immediately
upon
the
availability
of
control
power
,
the
spring
charging
motor
(
motor
)
is
energized
,
which
in
turn
charges
the
closing
springs
.
When
the
closing
springs
are
charged
,
limit
switch
contact
"
LSb
"
is
opened
,
and
limit
switch
contact
"
LSa
"
is
closed
.
10
.
The
latch
check
switch
,
if
furnished
,
insures
that
the
tripping
mechanism
must
be
reset
prior
to
energizing
the
closing
latch
release
coil
(
X
)
.
2
.
Operation
of
the
Close
Control
switch
energizes
the
latch
re
-
lease
coil
(
X
)
through
the
circuit
breaker
auxiliary
switch
"
b
"
contact
,
the
normally
closed
lockout
relay
contact
"
Yb
"
,
and
the
limit
switch
contact
"
LSa
"
.
The
latch
release
coil
(
X
)
releases
the
closing
latch
.
The
springs
then
discharge
to
close
the
circuit
breaker
.
11
.
The
stopping
device
switch
,
if
applicable
,
prevents
electrical
reclosing
of
the
circuit
breaker
after
a
m
anual
trip
until
the
stopping
device
has
been
manually
reset
.
Table
1
-
Operating
Voltage
Range
Undervoitage
Spring
Charging
Si
:
Motor
I
Nominal
Close
Trip
|
Control
Voltagi
|
|
Pick
-
upl
;
Maximum
Coil
Cd
3
f
Drop
-
out
48
Vdc
28
-
56
15
-
29
41
38
-
56
38
-
56
125
Vdc
70
-
140
100
-
140
38
-
75
100
-
140
105
212
75
-
150
140
-
280
250
V
dc
200
-
280
200
-
280
104
-
127
120
Vac
102
104
-
127
36
-
72
104
-
127
74
-
144
240
V
ac
204
208
-
254
208
-
254
208
-
254
Courtesy of NationalSwitchgear.com

ABB VHK-R Specifications

General

Brand	ABB
Model	VHK-R
Category	Circuit breakers
Language	English