ABB 511 Series - Page 6

IB
-
7.2
.
1.7
-
1
PAGE
6
SOLID
-
STATE
OVERCURRENT
RELAYS
Internal
Connection
Diagrams
12
D
223
A
TIME
-
OVERCURRENT
RELAYS
Type
51
(
with
or
without
Instantaneous
)
Single
Phase
Relays
—
omit
coils
1
-
2
and
5
-
6
)
(
Two
Phase
Relays
—
omit
coil
3
-
4
)
°
~
Vo
4
*
3
?
V
?
rV
?
7
I
TEST
1 1
L
.
1 0
L
.
9
o
o
u
£
E
1
0 8
O
’
TIME
12
30
£
LIT
-
10
o
'
*
J
>
TEST
(
-
)
(
)
I
T
TARGET
Vw
'
l
TT
«
U
»
towm
Ce
*
wc
«
»
<
•
»
UMdl
1
MST
.
Not
*
:
User
to
remove
links
Ly
or
L
|
only
if
torque
-
control
contacts
are
to
be
used
:
1
.
Remove
only
Lx
for
torque
-
control
of
51
.
(
Time
element
)
2
.
Remove
only
L
|
for
torque
control
of
50
.
(
Instantaneous
element
)
$
2
*
3
in
Three
-
phase
and
ground
with
instantaneous
52
—
i
1
i
-
i
i
i
i
i
6
5
4
3
2
1
12
M
10
9
0
7
1
u
O
O
*
o
o
6
5
4
3
2
FIGURE
1
Internal
Connections
and
Typical
External
Connection
Diagram
i
I
2
H
I
0
9
0
HB
*
—
O
TRIPPING
BUS
RELIABLE
O
.
C
.
SUPPLY
52
5
«
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