ABB 511 Series - Page 21

IB
-
7.2
.
1.7
-
1
PAGE
21
SOLID
-
STATE
OVERCURRENT
RELAYS
TABLE
2
CIRCUIT
-
SHIELD
OVERCURRENT
RELAY
TEST
CURRENT
CORRECTION
—
REACTANCE
TESTING
120
VOLT
SOURCE
(
ADJUSTABLE
)
IG
E
REACTOR
#
6054975
)
Xr
-
=
)
-
fi
-
Xg
»
:
4
-
0
.
Xg
=
i
i
-
n
.
TEST
CURRENT
MIIT
/
T
*
s
-
3
s
0.6 0.8
1.0
0.5
1.2
1.5
2 . 0
2.5
3
4
5
10
12
6
7
8
I
0.50
0.60
0.80
1.00
1.20
PICKUP
1.50 2.00 2.50 4.00
3.00
5.00
6.00 7.00
8.00
10.00 12.00
1.08
1.21
1
^
61
2.0 0
3.00
2.40
3.00
5.00
6.00
8.00
10.00
12.00
14.00
16.00
20.00
24.00
36.00
3
X
1.52 1.81
2.41
3.60
4.50
6.00 7.50 18.00
9.00
12.00
15.09
21.00
24.00
30.00
4
X
2.05
2.41
3.20
4.00
4.80 6.0 0
8.00
10.00
12.00
16.00 20.00 24.00
40.00
28.00
32.00
48.00
1
5
X
2.55
3.04
4.00
5.00
6.01
10.00
7.50
12.50
15.00
20.00
25.00
30.00
40.00
35.00
50.00
60.00
12.05
15.00
6
X
3.06
3.64
4.90
6.00
7.20 9.05
18.00
24.00
30.25
36.00
42.00
48.00 60.00 72.00
8
X
4.06
4
,
90
6.55 8.05 9.75 12.15
16.05
20.10
20.50
25.50
24.30
41.00 49.00
32.40
56.00 64.00
80.00
10
X
5.35 6.35
10.40
12.30
8.25 15.25
51.50
31.00
41.50 62.50
71
,
50
80.00
12
&
12.40
18.90
.
5
-
TL
.
7.85
9.55 15.50
22.70
Xc
*
(
30.45
40.00
47.00 61.80 78.00
10.701
13.20
20
X
16.60
22. 00 25.00
31.25
46.50
63.00
67.00
0.5
-
2
AMP
TAP
RANGE
4
-
12
AMP
-
TAP
RANGE
*
1.5
-
6
AMP
TAP
RANGE
This
table lists
corrected
test
currents
tor
one
(
1
)
to
twenty
(
20
)
multiples
of
each
tap
setting
available
on
CIRCUIT
-
SHIELD
relays
These
test
currents
cause
the
relay
to
produce
the
trip
time
corresponding
to
current
transformer
(
CT
)
operation
,
as
will
be
encountered
in
actual
service
When
using
a
tapped
reactance
in
series
with
a
variable
voltage
source
to test
CIRCUIT
-
SHIELD
relays
,
the
desired
test current
should
be
set
using
the
largest
possible
reactance
,
as
indicated
m
the chart
above
for
a
120
Vac
source
TABLE
3
For
specific
test
instructions
using
MULTI
-
AMP
SR
-
51
Test
Set
see
page
15
.
CIRCUIT
-
SHIELD
OVERCURRENT
RELAY
TEST CURRENT
CORRECTION
—
MULTI
-
AMP
TEST
SET
80
VOLT
TAP
:
use
data
to
left
of
bold
line
40
VOLT
TAP
:
use
data
to
right
of
bold line
.
(
MULTI
-
AMP
SR
-
51
,
SR
-
76
)
0.5
-
TAP
l
AMP
LANGE
4
-
i
.
2
AMP
-
TA
:
»
RANG
:
:
TEST
CURRENT
MULT
.
1.5
-
6
AMP
TAP
RANGE
0.5
0. 6
0 . 8
1.0
1.2
1.5
2 . 0
3
2.5
4
5
6
10
12
7
8
T
0.50 0.60
PICKUP
0.80
1.00 1.20 1.50
2.00 2.50
3.00
4.00
5.00
6.00
10.00
7.00
8.00
12.00
1.55
1.58
1.87
2
^
Z
5
.
2
^
15
2.59
4.10
5.05
6.10
8.10
IP
.
00
12.00
14.10
16.00
20.00
24.30
3
X
3.35
3.34 3.49
3.85
4.29 5.01
6.40 7.80 9.40
12.30
15.30 18.30
21.30 24.30
30.20
36.50
5.10
4
X
4.89 5.09
5.45
6.0 0
6.90
12.30
8.70
10.40
16.50
20.40
20.80
25.50
24.50
28.50
32.00
4
Q
.
5
Q
51.00
48.80
6.78 6.50 6.60
5
X
7.00 7.70 8.81
11.00
13.30
16.00
30.80 35.60
41.20
62.00
8.10
7.90
6
X
7.95
44.20149
.
50
8.50
9.30
10.50
13.30
16.00
19.00
25.00
i
30.60
37.00
61.80 74.00
10.40
10.80
8
X
10.60
11.30
12.40
14.30
17.80 21.80
25.20
33.00
41.50 51.50
59.50
65.50
10
X
13.30
12.90
13.30
14.00
15.60 18.00
22.30
27.00
31.00
40.90
155.00
65.00 75.00 82.00
15
X
18.80 18.70 18.60
20.50
22.50 25.00
32.00
39.00
52.00 65.00
179.00
40
VO
JT
TAP
20
X
24.00
24.00
24.30
26.00
29.50
32.50
42.00
61.00
70.00
85.00
This
table lists
corrected
test
currents
for
one
(
1
)
to
twenty
(
20
)
multiples
of
each
tap
setting
available
on
CIRCUIT
-
SHIELD
relays
These
test
currents
cause
the
relay
to
produce
the
trip
time
corresponding
to
current
transformer
(
CT
)
operation
,
as
will
be
encountered
in
actual
service
The
SR
-
51
.
which
operates
from
a
120
Vac
source
,
uses
a
transformer
with
step
down
taps
to
produce
a
wide
range
of
currents
useful
in
general
relay
testing
.
Since
the
series
impedance
of
the
transformer
provides
a
fixed
source
impedance
,
a
variable
autotransformer
is
used
to
adjust
the
level
of
input
current
.
This
fixed
source
impedance
is
in
general
not
large
enough
compared
to
the
non
-
lmear
relay
impedance
to
guarantee
sine
wave
test current
.
Courtesy of NationalSwitchgear.com