ABB CIRCUIT SHIELD 437W Series - Page 9

Reverse Power
Relay
IB
7.8
.
1.7
-
1
Page
9
FIGURE
4
:
TYPICAL
CONNECTION FOR
REVERSE
VAR
DETECTION
a
TYPICAL CONTROL
CONNECTIONS
237
P
/
237
F
.
b
+
i
C
12
32
R
Phase
Sequence
a
-
b
-
c
0
7
5
2
13
+
CONTROL
POWER
52
a
16
Q
Q
8
Q
—
—
Q
—
[
32
—
(
1 1
*
1
TC
»
i
»
i
9
X
32
R
TYPICAL
CONTROL CONNECTIONS
437
P
/
437
F
+
i
ie
12
§
H
32
R
H
0
6
7
13
+
A
CONTROL
POWER
52
91
a
0
32
R
O
8
52
V
hM
TC
2
X
OTHER
RELAYS
TYPICAL
CONTROL
CONNECTIONS
437
W
/
437
G
+
12
32
R
6
7
11
CONTROL
POWER
52
a
IaPl
,
0
PF
G
»
Q
8
CXL
Pi
ok
up
32
INTERNAL
LINK
SET
ON
0
DEG
TC
V
_
^
/
“
Trip
w
Sector
General
Note
:
1
.
Catalog
Series
437
W
/
437
G
preferred
for
this
application
.
2
.
If
phase
sequence
is
A
-
C
-
B
,
reverse
the
connections
at
terminals
9
and
10
of the
relay
.
Notes
for
437
W
/
437
G
series
units
only
:
A
.
For
connection
shown
,
with internal
link
on
0
degree
position
,
VARS
measured
per
the
formula
:
Single
-
phase
VARS
=
V
9
-
1 0
*
1 1
-
2
*
cos
0
where
6
is
the
angle
between
I
*
and
V BC
.
»
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