ABB 5HK Series User Manual

IB
6.2
.
1.7
D
Page
6
ABB
ASEA
BROWN
BOVERI
opening
and
closing
.
This
includes
control
switches
,
relays
,
etc
.
Turn
motor
disconnect
switch
(
1
,
Figure
2
)
to
“
ON
”
position
to
charge
the
closing
springs
,
and
operate
the
breaker
as
required
.
If
motor
disconnect
switch
(
1
,
Figure
2
)
is
not
provided
,
springs
will
automatically
charge
when
approaching
‘
TEST
portion
.
FOR
SAFETY
:
When
racking
circuit
breaker
to
“
CON
-
NECTED
”
position
,
close
compartment
door
(
1
,
Figure
3
)
and
insert
racking
crank
(
4
,
Fiqure
3
)
through
sliding
panel
(
2
,
Figure
3
)
.
7
.
Push
unlocking
lever
(
3
)
to
left
and
turn
racking
crank
(
4
)
approximately
1
/
4
turn
clockwise
,
then
release
unlocking
lever
.
Continue
cranking
until
racking
mecha
-
nism
automatically
stops
at
“
CON
NECTED
”
position
.
4.4
SAFE
OPERATION
RECOMMENDATIONS
1
.
It
is
recommended
that
any
circuit
breaker
be
withdrawn
and
stored
in
the
test
position
whenever
it
is
to
be
main
-
tained
in
the
open
position
with
no
planned
switching
.
2
.
It
is
recommended
that
a
ground
test
device
be
con
-
nected
to
the
proper
compartment
when
any
work
is
to
be
done
on
any
bus
or
feeder
circuit
.
Section
5
.
MAINTENANCE
AND
ADJUSTMENTS
5.1
GENERAL
INFORMATION
HK
circuit
breakers
are
designed
for
minimum
mainte
-
nance
and
tested
to
ensure
that
minimum
maintenance
will
be
required
.
Only
one
basic
adjustment
is
normally
re
-
quired
and
that
is
contact
adjustment
.
This
should
be
checked
to
the
dimensional
values
required
as
described
in
paragraph
5.2
.
Other
adjustments
are
required
only
when
operational
check
indicates
a
need
.
During
maintenance
checks
,
all
accessible
bolts
,
nuts
and
screws
should
be
routinely
checked
to
ensure
that
they
are
tight
.
It
is
recom
-
mended
that
the
5
HK
75
,
5
HK
150
and
5
HK
250
circuit
breakers
be
normally
inspected
after
2000
operations
and
that
the
5
HK
350
circuit
breakers
be
normally
inspected
after
1000
operations
.
These
operations
can
be
either
no
-
load
mechanical
or
load
current
switching
where
the
power
factor
is
relatively
high
.
When
the
circuit
breakers
are
used
for
direct
bulk
capacitor
or
reactor
switching
operations
or
for
motor
starting
applications
,
it
is
recommended
the
5
HK
75
,
5
HK
150
and
5
HK
250
circuit
breakers
be
inspected
after
1000
operations
and
that
the
5
HK
350
circuit
breakers
be
inspected
after
500
operations
because
of
the
switching
severity
If
however
,
after
the
first
inspection
period
,
there
is
no
indication
of
any
problem
,
actual
operating
experience
can
dictate
the
inspection
cycle
.
Regarding
maintenance
recommendations
following
fault
duty
,
reference
is
made
to
ANSI
Standard
C
37.04
to
which
the
circuit
breakers
have
been
tested
.
In
accordance
with
this
standard
,
a
total
of
400
%
asymmetrical
fault
duty
can
be
accumulated
.
This
is
to
be
ten
or
less
close
-
open
operations
at
less
than
85
%
of
full
duty
;
but
it
can
be
an
accumulation
over
a
long
time
period
of
lower
currents
.
The
condition
of
the
breaker
should
be
such
that
after
this
duty
it
is
capable
of
one
more
close
-
open
operation
at
full
fault
current
.
Inspection
is
to
be
made
at
this
time
to
ensure
compliance
with
this
requirement
.
Final
operation
can
be
made
if
everything
is
satisfactory
.
At
this
time
,
maintenance
should
be
performed
,
reconditioning
done
and
replace
-
ment
made
as
indicated
.
In
accordance
with
the
same
standard
it
is
recommended
that
after
a
major
fault
duty
cycle
(
CO
-
15
SEC
CO
)
Which
is
known
to
be
between
85
and
100
%
of
the
circuit
breaker
CAUTION
CAUTION
CAUTION
CAUTION
DO
NOT
ATTEMPT
TO
RACK
ANY
FURTHER
The
circuit
breaker
may
now
be
put
in
service
and
be
operated
as
required
Section
4
.
CIRCUIT
BREAKER
REMOVAL
(
See
Figure
3
)
4.1
REMOVAL
FROM
“
CONNECTED
”
POSITION
To
remove
circuit
breaker
from
“
CONNECTED
”
position
,
open
the
breaker
as
required
.
1
.
Open
sliding
door
(
2
)
in
front
compartment
door
(
1
)
.
2
.
Engage
racking
crank
(
4
)
and
push
racking
unlocking
lever
(
3
)
to
left
.
3
.
Rotate
racking
crank
(
4
)
counterclockwise
approxi
-
mately
1
/
4
turn
,
then
release
unlocking
lever
.
4
.
Continue
cranking
counterclockwise
until
racking
mechanism
automatically
stops
at
“
TEST
”
position
.
4.2
“
DISCONNECT
”
POSITION
Repeat
same
operation
for
"
DISCONNECT
”
position
.
4.3
REMOVAL
FROM
SWITCHBOARD
To
position
the
racking
mechanism
for
withdrawal
of
the
circuit
breaker
from
the
switchboard
,
again
push
racking
unlocking
lever
to
the
left
and
turn
racking
crank
counter
-
clockwise
only
until
resistance
to
motion
is
felt
.
(
Approxi
-
mately
2
-
3
turns
-
DO
NOT
FORCE
.
)
The
circuit
breaker
can
now
be
removed
from
the
compart
-
ment
by
pulling
on
the
handle
located
at
the
bottom
of
the
front
barrier
,
or
by
pulling
at
the
lower
edge
of
the
front
barrier
on
the
1200
and
2000
ampere
,
5
HK
350
breaker
.
NOTE
:
The
closing
springs
,
if
charged
,
will
automatically
discharge
when
the
circuit
breaker
is
withdrawn
from
the
switchboard
.
)
Courtesy of NationalSwitchgear.com

ABB 5HK Series Specifications

General

Brand	ABB
Model	5HK Series
Category	Circuit breakers
Language	English