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ABB CIRCUIT SHIELD 437W Series - Page 15

ABB CIRCUIT SHIELD 437W Series
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Reverse
Power
Relay
IB
7.8
.
1.7
-
1
Page
15
5
.
Testing
437
W
/
437
G
Series
Units
(
continued
)
Important
Note
:
in
order
to
test
the
drawout
units
of
relays
which
have
an
external
resistor
(
per
internal
connection
diagram
16
D
437
B
)
,
a
resistor
must
be
temporarily
be
connected
between
terminals
15
and
16
on
the
drawout
unit
.
The
value
of
this
resistor
depends
on
the
control
voltage
rating
of
the
relay
,
sufficient
.
220
vdc
unit
:
5000
ohms
;
250
vdc
unit
:
6000
ohms
.
resistor
is
1500
ohms
;
A
25
watt
The
value
to
be
used
is
:
125
vdc
unit
:
2000
ohms
;
110
vdc
unit
:
TEST
SET
i
.
nn
l
a
120
T I M E R
#
START
V O L T S
A M P S
STOP
T I M E R
9
+
Q
0
+
Q
Figure
8
:
Typical
Test
Circuit
Without
Phase
-
Shifting
Source
.
CONTROL
VOLTABE
for
437
W
/
437
G
series
units
output
contact
is
11
-
12
.
Note
:
S
’
S
'
08
05
01
03
f
t
Y
Y
.
t
/
vl
G
Connect
proper
resistor
15
-
16
if
relay
is
per
note
at
top
of
this
page
.
P
O
i
r
*
h
i
OIE
<
-
>
15
OIH
913
912
on
910
!
R
TEST
SET
I
1.00
G
ISO
T I M E R
<
3
>
START
A M P S
V O L T S
a
3
D
LEflO
5
T
0
P
T I M E R
P H A S E P H A S E
+
+
oT
o
o
CONTROL
VOLTABE
Figure
9
:
Typical
Test
Circuit
With
Phase
-
Shifting
Source
.
05
OS
OR
03
r
r
Note
:
for
437
W
/
437
G
series
units
output
contact
is
11
-
12
.
C
P
o
Connect
proper
resistor
15
-
16
if
relay
is
per
note
at
top
of
this
page
.
<
-
>
15
015
OlH
913
912
<
-
>
ll
910
5
6
.
OBSOLETE
RELAYS
:
Various
earlier
versions
of
the
type
32
R
relay
are
obsolete
and
have
been
superseded
by
the
improved
series
covered
by
this
instruction
book
.
The
following
is
a
guide
to
the
replacement
of
the
earlier
units
.
Connections
for
all
of
the
earlier
units
are
per
internal
connection
diagram
16
D
237
C
on
page
5
,
EXCEPT
237
C
9171
.
Replace
with
"
Old
”
Catalog
Number
2
3
7
S
41
7
1
,
237
R
41
7
1
,
23
7
R
93
7
7
60
Hertz
System
50
Hertz
System
437
P
4671
437
F
4671
237
S
4191
,
237
R
4191
,
237
R
9397
437
P
4691
437
F
4691
237
C
9171
(
change
in
connections
required
)
437
Wxx
70
437
GXX
70
Courtesy of NationalSwitchgear.com

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