ABB CR Series User Manual

I
.
L
.
41
-
131
P
TYPES
CR
,
CRC
,
CRP
AND
CRD
RELAYS
be
adjusted
when
the
phase
angle
relationship
between
the
operating
circuit
and
the
polarizing
circuit
is
at
the
maxi
-
mum
torque
angle
or
when
the
circuit
relationship
has
the
operating
and
polarizing
circuits
in
phase
.
It
is
recom
-
mended
that
a
single
-
phase
(
in
phase
relationship
)
set
-
up
be
used
as
a
matter
of
ease
and
convenience
.
D
.
Directional
Unit
(
D
)
1
.
The
upper
pin
bearing
should
be
screwed
down
until
there
is
approximately
.
025
"
clearance
between
it
and
the
top
of
shaft
bearing
.
The
upper
pin
bearing
should
then
be
securely
locked
in
position
with
the
lock
nut
.
The
lower
bearing
position
is
fixed
and
cannot
be
adjusted
.
2
.
The
contact
gap
adjustment
for
the
directional
unit
is
made
as
follows
:
4
.
The
magnetic
plugs
are
used
to
reverse
any
unwanted
spurious
torques
that
may
be
present
when
the
relay
is
energized
on
current
alone
.
The
reversing
of
the
spurious
torques
is
accomplished
by
using
the
adjusting
plugs
in
the
following
manner
:
a
)
Voltage
circuit
terminals
on
the
voltage
polarized
relays
(
CR
,
CRP
and
CRD
voltage
polarized
unit
)
are
short
-
circuited
.
With
the
moving
contact
in
the
normally
-
opened
posi
-
tion
,
i
.
e
.
against
the
right
stop
on
bridge
,
screw
in
the
stationary
contact
until
both
contacts
just
close
as
indi
-
cated
by
a
neon
lamp
in
the
contact
circuit
.
Then
,
screw
the
stationary
contact
away
from
the
moving
contact
3
/
4
of
a
turn
.
The
clamp
holding
the
stationary
contact
housing
need
not
be
loosened
for
the
adjustment
since
the
clamp
utilizes
a
spring
-
type
action
in
holding
the
stationary
con
-
tact
in
position
.
The
set
screw
in
the
stationary
contacts
has
been
shop
adjusted
for
optimum
follow
and
this
adjustment
should
not
be
disturbed
.
b
)
The
polarizing
circuit
of
the
current
polarized
relays
(
CRC
and
CRD
current
polarized
unit
)
are
open
-
circuited
.
Upon
completion
of
either
“
a
”
or
“
b
”
,
current
is
applied
to
the
operating
circuit
terminals
as
per
Table
4
.
Plug
adjustment
is
then
made
per
Table
4
such
that
the
spurious
torques
are
reversed
.
The
plugs
are
held
in
position
by
upper
and
lower
plug
clips
.
These
clips
need
not
be
dis
-
turbed
in
any
manner
when
making
the
necessary
adjust
-
ment
.
The
moving
contact
assembly
has
been
factory
adjusted
for
low
contact
bounce
performance
and
should
not
be
changed
.
3
.
The
sensitivity
adjustment
is
made
by
varying
the
tension
of
the
spiral
spring
attached
to
the
moving
element
assembly
.
The
spring
is
adjusted
by
placing
a
screwdriver
or
similar
tool
into
one
of
the
notches
located
on
the
periphery
of
the
spring
adjuster
and
rotating
it
.
The
spring
adjuster
is
located
on
the
underside
of
the
bridge
and
is
held
in
place
by
a
spring
-
type
clamp
that
does
not
have
to
be
loosened
prior
to
making
the
necessary
adjustments
.
The
spring
is
to
be
adjusted
such
that
the
contacts
will
dose
as
indicated
by
a
neon
lamp
in
the
contact
circuit
when
energized
with
the
required
current
and
voltage
as
shown
in
Table
3
.
This
table
indicates
that
the
spring
can
The
magnetic
plug
adjustment
may
be
utilized
to
posi
-
tively
close
the
contacts
on
current
alone
.
This
may
be
de
-
sired
on
some
installations
in
order
to
insure
that
the
relay
will
always
trip
the
breaker
on
zero
potential
.
RENEWAL
PARTS
Repair
work
can
be
done
most
satisfactorily
at
the
fac
-
tory
.
However
,
interchangeable
parts
can
be
furnished
to
the
customers
who
are
equipped
for
doing
repair
work
.
When
ordering
parts
,
always
give
the
complete
nameplate
data
.
23
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ABB CR Series Specifications

General

Brand	ABB
Model	CR Series
Category	Relays
Language	English