ABB CIRCUIT SHIELD 437W Series User Manual

Reverse
Power
Relay
IB
7.8
.
1.7
-
1
Page
14
Catalog
Series
437
W
/
437
G
5
.
ACCEPTANCE
TESTS
Important
:
see
note
at
top
of
page
15
regarding
test
connections
.
Important
:
catalog
series
437
W
/
437
G
units
are
power
measurement
relays
;
therefore
,
variations
in
the
voltage
magnitude
,
current
magnitude
,
and
phase
angle
between
them
will
have
an
effect
on
the
operating
point
of
the
relay
.
Important
:
With
the
max
torque
angle
selector
link
in
the
0
°
position
,
the
relay
operates
on
the
quantity
:
V
9
-
1 0
*
I
1
-
2
*
cos
0
.
Power
With
the
max
torque
angle
selector
link
in
the
30
°
position
,
the
relay
operates
on
the
quantity
:
where
0
is
the
angle
by
which
the
applied
voltage
leads
the
current
.
(
v s
-
i o
/
y y
)
*
1 1
-
2
*
c o s
(
e
-
3
o
°
)
,
Power
Without
Phase
-
Shifting
Source
:
A
typical
acceptance
test
circuit
is
given
in
Figure
8
.
The
voltage
and
current
outputs
of
the
test
set
must
be
in
phase
.
The
control
voltage
source
should
match
the
relay
’
s
front
panel
rating
.
On
dual
-
rated
units
be
sure
the
internal
selector
link
is
positioned
properly
.
The
ac
source
should
be
60
Hz
.
or
50
Hz
.
to
match
the
relay
’
s
rating
.
Set
the
internal
selector
links
for
0
degree
phase
shift
and
definite
time
delay
.
a
.
Set
the
front
panel
PICKUP
and
TIME
DELAY
dials
to
minimum
.
b
.
Apply
control
voltage
.
Depress
the
TARGET
RESET
button
.
The
target
should
reset
to
black
.
Apply
69
vac
to
the
voltage
input
.
c
.
Apply
the
current
signal
and
increase
until
the
pickup
light
comes
on
and
the
contacts
transfer
.
The
target
should
set
to
orange
when
the
output
69
Volts
X
Amps
.
Calculated
power
Power
in
watts
contacts
transfer
.
should
be
within
+
/
-
10
%
of
the
relay
’
s
minimum
pickup
rating
.
d
.
Increase
the
current
setting
to
two
times
the
value
required
for
pickup
.
Turn
off
the
source
and
reset
the
timer
.
Start
the
test
set
.
The
relay
should
pick
up
and
time
out
,
stopping
the
timer
.
Time
delay
should
be
within
+
/
-
10
%
of
the
time
dial
setting
.
e
.
Reverse
the
current
input
leads
at
terminals
1
and
2
of
the
relay
.
Apply
five
amperes
current
.
The
relay
should
not
pick
up
.
If
the
actual
settings
to
be
used
in
the
application
are
known
,
the
relay
should
be
calibrated
by
repeating
steps
(
c
)
and
(
d
)
,
except
adjusting
the
relay
’
s
front
panel
dials
until
the
desired
pickup
and
operating
time
are
obtained
.
f
.
Note
:
if
the
30
degree
internal
phase
shift
is
required
for
the
application
,
reposition
the
internal
selector
link
for
30
°
.
The
applied
ac
input
voltage
should
be
increased
to
120
vac
.
The
current
level
must
be
increased
by
a
factor
of
1.15
to
account
for
the
30
degree
internal
phase
shift
.
Power
measured
(
V
/
73
"
)
*
I
*
cos
30
°
.
(
cos
30
=
.
866
)
Note
:
if
the
inverse
timing
curve
is
to
be
used
,
reposition
the
internal
selector
link
.
Refer
to
the
timing
characteristic
in
Figure
6
for
expected
operating
times
.
Timing
tests
should
be
performed
with
the
input
power
set
at
2
multiples
of
pickup
or
higher
.
Additional
Checks
With
Phase
-
Shifting
Source
:
If
a
test
set
with
the
ability
to
shift
the
phase
of
the
ac
input
current
and
voltage
is
being
used
,
additional
checks
of
the
operating
characteristics
can
be
made
:
g
.
If
the
30
°
phase
shift
selection
is
made
,
test
(
f
)
above
can
be
performed
at
unity
power
factor
by
setting
the
voltage
to
lead
the
current
by
30
degrees
,
and
power
measured
becomes
:
P
=
(
V
/
N
/
T
)
*
I
.
Courtesy of NationalSwitchgear.com

ABB CIRCUIT SHIELD 437W Series Specifications

General

Brand	ABB
Model	CIRCUIT SHIELD 437W Series
Category	Relays
Language	English