ABB CIRCUIT SHIELD 437W Series - Page 8

Reverse
Power
Relay
IB
7.8
.
1.7
-
1
Page
8
TYPICAL
CONNECTIONS
FOR
THE
REVERSE
POWER
PROTECTION
OF
GENERATORS
FIGURE
3
:
a
TYPICAL
CONTROL
CONNECTIONS
237
P
/
237
F
b
+
12
I
C
X
32
R
Phase
Sequence
a
-
b
-
c
T
A
7
5
2
13
O
+
1
CONTROL
POWER
52
a
16
G
9
o
—
o
—
l
O
8
52
—
11
ri
+
TC
32
R
10
TYPICAL
CONTROL
CONNECTIONS
437
P
/
437
F
+
12
i
'
Z
0
H
32
R
H
T
0
H
A
7
13
u
+
I
-
A
CONTROL
POWER
2
H
+
?
1
T
*
G
32
R
O
8
52
V
L
EL
SI
TC
2
J
:
OTHER
RELAYS
TYPICAL
CONTROL
CONNECTIONS
437
W
/
437
G
+
1 21
32
R
T
4
7
11
-
J
+
1
.
.
Pickup
CONTROL
POWER
Vab
T
G
*
Si
J
TC
O
8
Cr
~
L
s
7
INTERNAL
LINK
SET
ON
30
DEG
Van
Trip
Sector
General
Notes
:
1
.
If
phase
-
sequence
is
A
-
C
-
B
,
connect
32
R
terminal
10
to
phase
C
potential
,
rather
than
to
phase
B
as
shown
above
.
2
.
If
the
potential
transformers
are
connected
Y
-
Y
instead
of
open
-
delta
as
shown
,
relay
may
be
connected
phase
a
-
to
-
neutral
if
the
internal
maximum
-
torque
-
angle
selector
plug
is
set
for
0
°
.
Notes
for
437
W
/
437
G
series
units
only
:
A
.
For
connection
shown
,
with
internal
link
on
30
degree
position
,
power
measured
is
per
the
formula
:
Single
-
phase
Watts
=
(
V
9
-
1 0
/
\
/
3
)
*
11
-
2
*
cos
fK
B
.
If
the
internal
link
is
set
on
the
0
°
position
the
measurement
is
per
the
formula
:
Single
-
phase
Watts
=
V
9
-
1 0
*
I
1
-
2
*
cos
-
6
-
.
Courtesy of NationalSwitchgear.com