ABB CR Series User Manual

TYPES
CR
,
CRC
,
CRP
AND
CRD
RELAYS
INTERNAL
SCHEHATIC
INTERNAL
SCHEMATIC
UPfER
DIRECTIONAL
UNIT
LOWER
DIRECTIONAL
IIM
1
T
DIRECTIONAL
UNIT
-
0
±
0
±
SUIT
.
1
INDICATING
CONTACTOR
SWITCH
T
INDICATING
CONTACTOR
SWITCH
UPPER
DIRECTIONAL
i
WIT
INDUCTION
WIT
•
±
'
LONER
DIRECTIONAL
±
I
IT
UNIT
O
'
r
•
0
S
'
0
^
'
1
CO
id
:
-
-
ICS
coi
iics
co
is
/
'
D
INDUCTION
UNIT
u
INDICATING
INSTANTANEOUS
UNIT
I
IT
-
S
'
INDICATING
^
INSTANTANEOUS
TRIP
co
$
.
RED
HAN
OLE
TEST
SWITCH
CURRENT
TEST
JACt
CHASSIS
OPERATED
SHORTING
SWITCH
I
”
”
6
$
0
~
O
"
“
O
'
L
J
L
.
2
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_
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6
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s
-
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§
©
®
©
®
©
®
©
®
«
s
)
-
CHASSIS
OPERATED
SHORTING
SNITCH
RED
HANDLE
r
—
pTEST
SWITCH
^
-
•
CURRENT
TEST
JACR
TEW
INAL
TERMI
HAL
ITH
RELATIVE
INSTANTANEOUS
POLARITY
AS
SUM
THE
OIRECTIMAL
WIT
CONTACTS
CLOSE
?
T
6
C
0
v
£
3
*
FRONT
VIEW
WITH
RELATIVE
INSTANTANEOUS
POLARITY
AS
SHOWN
THE
DIRECTIONAL
UNIT
CONTACTS
CLOSE
fftCNT
VIEW
Sub
6
57
D
4546
Sub
5
57
D
4560
Fig
*
7
7
.
Internal
Schematic
of
single
trip
directional
con
*
trol
relay
Type
CRP
with
Indicating
Instantaneous
Trip
Unit
,
in
Type
FT
2
7
Case
.
Fig
*
72
.
Internal
Schematic
of
single
trip
directional
control
relay
Type
CRD
with
Indicating
Instantaneous
Trip
Unit
,
in
Type
FT
31
Case
.
ADJUSTMENTS
AND
MAINTENANCE
b
)
For
relays
identified
with
a
”
T
”
,
located
at
lower
left
of
stationary
contact
block
,
the
index
mark
on
the
movement
frame
will
coincide
with
the
“
O
”
mark
on
the
time
dial
when
the
station
-
ary
contact
has
moved
through
approximately
one
-
half
of
its
normal
deflection
.
Therefore
,
with
the
stationary
contact
resting
against
the
backstop
,
the
index
mark
is
offset
to
the
right
of
the
“
O
”
mark
by
approximately
.
020
”
.
The
placement
of
the
various
time
dial
positions
in
line
with
the
index
mark
will
give
operating
times
as
shown
on
the
respective
time
-
current
curves
.
For
double
trip
relays
,
the
follow
on
the
stationary
contacts
should
be
approximately
1
/
32
”
.
The
proper
adjustments
to
insure
correct
operation
of
this
relay
have
been
made
at
the
factory
.
Upon
receipt
of
the
relay
,
no
customer
adjustments
,
other
than
those
covered
under
“
SETTINGS
*
,
should
be
required
.
For
relays
which
include
an
indicating
instantan
-
eous
trip
unit
(
STT
)
,
the
junction
of
the
induction
and
indicating
instantaneous
trip
coils
is
brought
out
to
switch
jaw
#
3
.
With
this
arrangement
the
overcurrent
units
can
be
tested
separately
.
Acceptance
Check
2
.
Minimum
Trip
Current
—
Set
the
time
dial
to
position
6
.
Alternately
apply
tap
value
current
plus
3
%
and
tap
value
current
minus
3
%
.
The
moving
con
-
tact
should
leave
the
backstop
at
tap
value
current
plus
3
%
and
should
return
to
the
backstop
at
tap
value
current
minus
3
%
.
3
.
Time
Curve
—
Table
2
shows
the
time
curve
calibration
points
for
the
various
types
of
relays
.
With
the
time
dial
set
to
the
indicated
position
,
apply
the
currents
specified
by
Table
2
(
e
.
g
.
for
the
CR
-
8
,
2
and
-
20
times
tap
value
current
)
and
measure
the
operating
time
of
the
relay
.
The
operatin
g
times
should
equal
those
of
Table
2
plus
or
minus
5
percent
.
The
following
check
is
recommended
to
insure
that
the
relay
is
in
proper
working
order
:
A
.
Overcurrent
Unit
(
CO
)
The
directional
unit
contacts
must
be
in
the
closed
position
when
checking
the
operation
of
the
overcurrent
unit
.
1
.
Contact
a
)
By
turning
the
time
dial
,
move
the
moving
con
-
tacts
until
they
deflect
the
stationary
contact
to
a
position
where
the
stationary
contact
is
resting
against
its
backstop
.
The
index
mark
located
on
the
movement
frame
should
coincide
with
the
”
0
”
mark
on
the
time
dial
.
For
double
trip
relays
,
the
follow
on
the
stationary
contacts
should
be
approximately
1
/
64
”
.
For
type
CR
-
11
relay
only
,
the
1.30
times
tap
value
operating
time
from
the
number
6
time
dial
posi
-
tion
is
54.9
±
5
%
seconds
.
It
is
important
that
the
1.30
times
tap
value
current
be
maintained
accurately
.
The
12
Courtesy of NationalSwitchgear.com

ABB CR Series Specifications

General

Brand	ABB
Model	CR Series
Category	Relays
Language	English