28
1MRS751802-MUM
Protection Relay
Technical Reference Manual, Standard Configurations
REX 521
Fig. 3.1.2.2.-1 Block diagram of the standard configuration B02 for REX 521
C
B
p
o
s
.
o
p
e
n
C
B
p
o
s
.
c
lo
s
e
D
C
p
o
s
.
o
p
e
n
D
C
p
o
s
.
c
lo
s
e
E
S
p
o
s
.
o
p
e
n
E
S
p
o
s
.
c
lo
s
e
S
e
le
c
to
r
In
p
u
t
S
W
G
R
P
s
In
p
u
t
s
ig
n
a
ls
D
ig
it
a
l
in
p
u
ts
T
e
rm
in
a
l
c
o
n
n
e
c
ti
o
n
O
u
tp
u
t
S
W
G
R
P
s
O
u
tp
u
t
s
ig
n
a
ls
O
u
tp
u
t
re
la
y
s
F
u
n
c
ti
o
n
b
lo
c
k
s
*)
N
O
T
E
!
T
h
e
t
ri
p
a
n
d
s
ta
rt
s
ig
n
a
ls
f
ro
m
t
h
e
p
ro
te
c
ti
o
n
f
u
n
c
ti
o
n
b
lo
c
k
s
a
re
r
o
u
te
d
d
ir
e
c
tl
y
t
o
t
h
e
a
u
to
-r
e
c
lo
s
e
r
(O
->
I)
v
ia
t
h
e
i
n
p
u
t
s
w
it
c
h
g
ro
u
p
s
o
f
th
e
a
u
to
-r
e
c
lo
s
e
r
a
n
d
a
re
n
o
t
s
h
o
w
n
i
n
t
h
e
d
ia
g
ra
m
.
In
te
rl
o
c
k
in
g
s
c
h
e
m
e
3I>
BS1
BS2
GROUP
RESET
CBFP
STA
R
T
TRIP
CBFP
3
I>>>
BS
1
BS
2
GROUP
DOUBLE
R
ESET
BS
OUT
STA
R
T
TRIP
CBFP
CBFP
Io>
CBFP
BS1
BS2
GROUP
RESET
STA
R
T
TRIP
CBFP
Io>
>
CBFP
BS
1
BS
2
GROUP
R
ESET
STA
R
T
TRIP
CBFP
Io
>>>
CBFP
BS1
BS2
GROUP
RESET
STA
R
T
TRIP
CBFP
GROUP
STA
R
T
3I
2f
/I
1f
>
3dI/dt
>
3I2f
>
BS
1
BS
2
GROUP
R
ESET
STA
R
T
TRIP
CBFP
Iub>
CBFP
3D
I>
BLOCK (BS
)
GROUP
R
ESET
STA
R
T
TRIP
CBFP
C
U
_
AL
AR
M
3It
h
>
CBFP
3
J>
Ca
b
I<->O CB1
OPEN
OPENENA
CLOSE
CLOSEENA
BINOPEN
BINCLOSE
OOPEN
OCLOSE
A
O
PEN
AC
L
O
S
E
3I>
>
CBFP
BS1
BS2
GROUP
DOUBLE
RESET
BSOUT
STA
R
T
TRIP
CBFP
3I
IL1
IL2
IL3
Io
Io
I<
->
O IND1
BINOP
E
N
BINCLOS
E
I<
->
O IND2
BINOPEN
BINCLOSE
I<
->
O POS
BINREMOTE
OPEN
BINOPEN
BINCLOSE
AL
AR
M
CB w
e
a
r
TCSSTA
T
E
BS
AL
AR
M
TCS1
AL
AR
M
MCS
3
I
TRIGG
R
ESET
HA
R_
HIGH
CUM_
H
IGH
PQ 3Inf
O
-->I
AR
1
AR
2
AR
3
AR
4
A
R
INH
CBOPEN
CBCLOSE
ON
RESET
DEFTRIP
LOCKOUT
ROPEN
RCLOSE
SHOT1
SHOT2
SHOT3
SHOT4
SHOT5
AR
1
T
R
IP
AR
2
T
R
IP
AR
3
T
R
IP
AR
4
T
R
IP
CB FA
IL
DEFTRIP
LOCKOUT
TRDUE
TDDUE
AC
T
IV
E
SHOT_A
LA
RM
O/C
E/F
Iub>
3It
h
>
PQ 3Inf
O
-->I
BS
2
3
I>
BS
2
3
I>>
BS
2
3
I>>>
BS
2
Io>
BS
2
I
o
>>
BS
2
I
o
>>>
BS2 Iub>
BS
3
Ith>
DRE
C trig
Ma
s
te
r tri
p
Ma
s
te
r tri
p
E
x
te
rna
l tri
p
E
x
te
rna
l tri
p
Lockout
reset
Lockout
reset
PQ 3Inf
t
rig
O/C
E/F
Iub>
3It
h
>
PQ 3Inf
O
-->I
O/C
E/F
Iub>
3It
h
>
DC1
DC2
ES1
ES2
DC2
ES2
DC1
ES1
CBO
TCS BS
CBO
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
DI9
BS
1
3
I>
BS
1
3
I>>
BS
1
3
I>>>
BS
1
Io>
BS
1
I
o
>>
BS
1
I
o
>>>
BS1 Iub>
I<->0
CB1
ope
n
I<
->
0 C
B
1
close
3It
h
>
MCS
3
I
TCS1
PQ 3Inf har
PQ 3Inf
cum
CB w
e
a
r
Lockout
Lockout
Lockout reset
S
Q
R
Lockout W
o
rking
H
SPO1
M
a
st
er Trip
Open
SH
OT1
SH
OT2
SH
OT3
SH
OT4
SH
OT5
TRDUE
TDDUE
AC
T
IV
E
AR
1
T
R
IP
AR
2
T
R
IP
AR
3
T
R
IP
AR
4
T
R
IP
CBFA
IL
DEFTRIP
LOCKOUT
SHOT_A
LA
RM
AR
1
T
R
IP
AR
2
T
R
IP
AR
3
T
R
IP
AR
4
T
R
IP
CBFA
IL
DEFTRIP
LOCKOUT
SH
OT_A
LA
R
M
I<->0
CB1
ope
n
I<
->
0 C
B
1
close
3It
h
>
MCS
3
I
TCS1
PQ 3Inf har
PQ 3Inf
cum
CB w
e
a
r
1
DREC
IL1
IL2
IL3
Io
Uo
BI1
BI2
BI3
BI4
BI5
BI6
BI7
BI8
BI9
BI1
0
BI1
1
BI1
2
BI1
3
BI1
4
BI1
5
BI1
6
EXT_TRG
St
art
3I>
St
art
3I>
>
St
art
3I>
>
>
St
art
Io>
St
art
Io>
>
S
ta
rt I
o
>>>
St
art
3Iub>
St
art
3It
h
>
Trip 3I>
Trip 3I>
>
Trip 3I>
>
>
Trip Io>
Trip Io>
>
Trip Io>
>
>
Trip 3Iub>
Trip 3Ith>
Ropen
I<
->
O IND1
BINOPEN
BINCLOSE
I<
->
O CB1
Interlocking_A
Interlocking_B
Interlocking_C
Interlocking_D
Interlocking_E
C
L
OSEEN
A
&
I<
->
O CB1
Lockout W
o
rking
PO1
(X
4.1.12/13)
PO2
(X
4.1.14/15)
PO3
(X
4.1.17/18)
SO1
(X
4.1.8/7/6)
SO2
(X
4.1.10/11/9)
O
-->I
E
x
t.
s
ta
rt
O
-->I
E
x
t.
tri
p
O
-->I
AR
1
AR
2
AR
3
AR
4
*)
O-
->
I INH
O-
->
I ON
E
x
te
rna
l tri
p
C
lose enable
Blocking 2
Logic input 1
Logic input 2
Logic input 3
R
eset
2
R
eset
1
Group
X4.2.5/6
X4.2.6/7
X4.2.8/9
X4.2.9/10
X4.2.11/12
X4.2.13/14
X4.2.15/16
X4.2.17/18
X3.1.1/2
Blocking 1
3I>
3
I>>
3
I>>>
Io>
Io
>>
Io
>>>
Iub>
3It
h
>
3I>
3
I>>
3
I>>>
Io>
Io
>>
Io
>>>
Iub>
3It
h
>
Trip 2
3I>
3
I>>
3
I>>>
Io>
Io
>>
Io
>>>
Iub>
3It
h
>
Trip 3
St
art
1
St
art
2
3
I>>
3
I>>>
BS
OUT
Al
a
rm
1
Clos
e
RCLOS
E
CLOS
E
CBFP
3I>
3
I>>
3
I>>>
Io>
Io
>>
Io
>>>
Iub>
3It
h
>
3I>
3
I>>
3
I>>>
Io>
Io
>>
Io
>>>
Iub>
3It
h
>
3I>
3
I>>
3
I>>>
Io>
Io
>>
Io
>>>
Iub>
3It
h
>
SWGR
P
I<
->
O IND1
I<
->
O IND2
SWGR
P
A
larm 2
O
-->I
A
c
ti
ve
O
-->I
A
la
rm
1
O
-->I
A
la
rm 2
Lockout
H
SPO1
(X
4.2.3/4/1/2)
ConfB02_b
>1
>1
>1
1
Trip 1
Clos
e
Open
Re
mote
3I>
St
art
3I>
Trip
3I>
>
St
art
3
I>> Tri
p
3I>
>
>
St
art
3
I>>> Tr
ip
Io>
St
art
Io>
Trip
Io
>> S
ta
rt
Io>
>
Trip
Io
>>> S
ta
rt
Io>
>
>
Trip
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
M
E
AS
H
I AL
AR
M
DI2
DI3
DI4
DI5
DI6
DI7
Int
e
rlocking
M
E
AS
L
O
AL
AR
M
M
E
AS
H
I AL
AR
M
DI3
DI4
DI5
DI6
DI7
Lockout
CB w
e
a
r
TCS1
MCS
3
I
DI4
DI5
DI6
DI7
DI8
Al
ar
m LED
1
Al
ar
m LED
2
Al
ar
m LED
3
Al
ar
m LED
4
Al
ar
m LED
5
Al
ar
m LED
6
Al
ar
m LED
7
Al
ar
m LED
8
Iub>
St
art
Iub>
Trip
3It
h
>
St
art
3It
h
>
Trip
O-
>
I OPEN
O->
I A
C
TIVE
O
->
I AL
AR
1
O
->
I AL
AR
2
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
3I2f
STA
R
T
3I2f
STA
R
T
3I2f
STA
R
T
3I2f
STA
R
T
DOUBLE
3
I>>
DOUBLE
3
I>>>
B
S
2 3I>
B
S
2 3I>
>
BS
2
3
I>>>
BS
2
Io>
BS
2
I
o
>>
BS
2
I
o
>>>
BS2 Iub>
BS
3
Ith>
B
S
1 3I>
B
S
1 3I>
>
BS
1
3
I>>>
BS
1
Io>
BS
1
I
o
>>
BS
1
I
o
>>>
BS1 Iub>
Summary of Contents for REX 521
Page 1: ...Protection Relay REX 521 Technical Reference Manual Standard Configurations ...
Page 2: ......
Page 12: ...12 ...
Page 22: ...22 ...
Page 62: ...62 ...
Page 72: ...72 ...
Page 128: ...128 ...
Page 132: ...132 ...
Page 172: ...172 ...
Page 198: ...198 ...
Page 249: ......