ABB CR Series - Page 24

TYPES
CR
,
CRC
,
CRP
AND
CRD
RELAYS
TABLE
3
DIRECTIONAL
UNIT
SENSITIVITY
Values
for
Min
.
Pick
-
Upf
Relay
Type
Rating
Voltsftt
Phase
Angle
Relationship
Amperes
I
leading
V
by
30
°
f
f
I
in
-
phase
with
V
CR
0.5
-
2.5
1
2.0
2
-
6
1
2.3
I
leading
V
by
30
°
ft
I
in
-
phase
with
V
4
-
12
1
4.0
4.6
1
I
lagging
V
by
60
°
ff
CRP
0.5
-
2.5
1
2.0
CRD
(
V
oltage
Unit
)
2
-
6
4.0
I
in
-
phase
with
V
I
lagging
V
by
60
°
ft
I
in
-
phase
with
V
1
4
-
12
1
4.0
8.0
1
CRC
CRD
(
Current
Unit
)
0.5
-
2.5
In
-
Phase
0.5
2
-
6
1.0
fThe
energization
quantities
are
input
quantities
at
the
relay
terminals
,
ffMaximum
torque
angle
,
ff
f
For
relays
rated
240
volt
,
apply
2
volt
.
TABLE
4
DIRECTIONAL
UNIT
CALIBRATION
Current
Amperes
Both
Plugs
In
Condition
Relay
Rating
Adjustment
0.5
to
2.5
2
to
6
Right
(
Front
-
View
)
Plug
Screwed
Out
Until
Spurious
Torque
is
Reversed
Spurious
Torque
In
Contact
Closing
Direction
(
Left
Front
View
)
40
4
to
12
80
0.5
to
2.5
2
to
6
Left
(
Front
View
)
Plug
Screwed
Out
Until
Spurious
Torque
is
in
Contact
Closing
Direction
,
Then
the
plug
is
screwed
in
until
spurious
torque
is
reversed
.
Spurious
Torque
In
Contact
Opening
Direction
(
Right
Front
View
) (
Contacts
remain
open
)
40
80
4
to
12
24
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