ABB CR Series User Manual

I
.
L
.
41
-
131
P
TYPES
CR
,
CRC
,
CRP
AND
CRD
RELAYS
INTERNAL
SCHEMATIC
UPPER
OIRECTIOXAL
UNIT
LOWER DIRECTIONAL
UNIT
0
i
D
—
f
UPPER
DIRECTIONAL
|
INDICATING
CONTACTOR
SNITCH
ICS
*
4
"
UNIT
LOVER
DIRECTIONAL
UNIT
/
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INDUCTION
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T
CHASSIS
OPERATED
SHORTING
SNITCH
RED
HANDLE
K
—
T E S T
SNITCH
-
CURRENT
TEST
JACK
,
TERMINAL
•
ITU
RELATIVE
INSTANTANEOUS
POLARITY
AS
SHOWN
THE
01
RECTI
ORAL
UNIT
CONTACTS CLOSE
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Sub
3
57
D
4559
FRONT
vlEw
Fig
.
7
.
Internal
Schematic
of
double
trip
,
directional
over
-
current
relay
type
CRP
in
type
FT
21
Case
.
For the
single
trip
relay
the
circuits
associated
with
ter
-
minal
2
are
omitted
,
57
D
4545
.
Fig
.
8
.
Internal
Schematic
of
double
trip
,
directional
over
-
current
relay
type
CRD
in
type
FT
31
Case
.
For
the
single
trip
relay
the
circuits
associated
with
ter
-
minal
2
are
omitted
,
57
D
4561
.
The
relays
are
generally
available
in
the
follow
-
ing
overcurrent
unit
current
ranges
:
Trip
Circuit
Constants
Indicating
Contactor
Switch
—
0.2
amp
tap
6.5
ohms d
-
c
resistance
2.0
amp
tap
0.15
ohms
d
-
c
resistance
Type
CR
Relay
Range
Taps
0.5
-
2.5
0.5
0.6
0.8
1.0
1.5
2.0
2.5
2
2.5
3 3.5
4
4
5
6
7
8
10
12
2
6
5
6
4
-
12
This
voltage
polarized
type
relay
is
intended
for
phase
fault
protection
and
the directional
unit
has
its
maximum
torque
when
the
current
leads
the
voltage
by
approximately
30
°
.
The directional unit
minimum
pick
-
up
is
1
volt
and
4
amperes
at
its maximum
torque
angle
for
the
4
to
12
ampere
range
relays
and
1
volt
and
2
amperes
for
the
2
to
6
ampere
and
0.5
to
2.5
ampere
range
relays
.
These
relays
may
have
either
single
or
double
circuit
closing
contacts
for
tripping
either
one
or
two
circuit breakers
.
The
time
vs
.
current
characteristics
are
shown
in
Figs
.
13
to
19
.
These
characteristics
give
the
con
-
tact
closing
time
for
the
various
time
dial
settings
when
the
indicated
multiples
of
tap
value
current
are
applied
,
to
the
relay
.
The
directional
unit
should
be
connected
using
the
cur
-
rent
in
one
-
phase
wire
and
the
potential
across
the
other
two
-
phase
wires
.
This
connection is
commonly
referred
to
as
the
90
°
connection
.
When
utilizing
the
90
°
connection
the
maximum
torque
of
the
relay
occurs
when
the fault
current
lags
its
100
%
P
.
F
.
position
by
approximately
60
°
.
See
Fig
.
21
.
Type
CRC
Relay
Trip
Circuit
The
main
contacts
will
safely
close
30
amperes
at
250
volts
d
-
c
and the seal
-
in
contacts
of
the
in
-
dicating
contactor
switch
will
safely
carry
this
cur
-
rent
long
enough
to
trip
a
circuit
breaker
.
The
indicating
instantaneous
trip
contacts
will
safely
close
30
amperes
at
250
volts
d
-
c
,
and
will
carry
this
current
long
enough
to
trip
a
breaker
.
The
current
polarized
type
relay
is
intended
for
ground
fault
protection
and
operates
on
residual
current
.
See
Fig
.
23
.
The
type
CRC
relay
has
its
maximum
torque
when
the
operating
current
leads
the
polarizing
current
by
approximately
40
°
.
The
direc
-
tional
unit
minimum
pick
-
up
is
0.5
ampere
in
each
winding
in
phase
for
the
0.5
to
2.5
ampere
and
the
2
to
6
ampere
range
relays
.
The
indicating
contactor
switch
has
two
taps
that
provide
a
pickup
setting
of
0.2
or
2
amperes
.
To
change
taps
requires
connecting
of
lead
located
in
front
of
the
tap
block
to
the desired
setting
by
means
of
a
screw
connection
.
5
Courtesy of NationalSwitchgear.com

ABB CR Series Specifications

General

Contact Configuration	SPDT, DPDT
Operating Temperature	-40...70 °C
Insulation Resistance	1000 MΩ
Electrical Life	100 x 10^3 operations at rated load
Coil Voltage	5 VDC, 6 VDC, 12 VDC, 24 VDC, 48 VDC, 60 VDC, 110 VDC, 24 VAC, 48 VAC, 115 VAC, 120 VAC, 230 VAC, 240 VAC
Contact Rating	6 A / 250 VAC, 6 A / 30 VDC