Manual 37138C
ESDR 4T - Current Differential Protection Relay
© Woodward
Page 17/46
M
on
ito
ring st
ep
1
(X
12
=
10
0 %
/
Y
1 =
10
%
)
M
on
ito
ring st
ep
2
(X
12
=
10
0 %
/
Y
2 =
35
%
)
P
rot
ec
te
d
ob
je
ct
100
20
0
C
har
ac
te
ris
tic
gr
ad
ie
nt
(f
ix
ed
) =
1
0 %
M
on
ito
ring st
ep 2,
fi
xed
li
m
it
(1
00 %
)
X
12,
Y2
a
nd Y
1:
a
dj
ust
ab
le
N
I
10
0
P
(X
12/
Y
2)
P
(X
12/
Y
1)
Y =
I
d
[%
]
a
I
300
400
2004-
02-
12
E
S
D
R
4 C
har
act
er
is
tic
e4
w
w
-0704-
kenn.
sk
f
50
0
S
I
[%
]
I
N
X =
-
+
I
b
a
I
b
I=
I
S
I
I
=
I
b
a
d
2
M
oni
to
ring
st
ep
1
fixed l
im
it
(8
5 %
-Y
2+
Y
1)
M
oni
to
ring
st
ep
2
fixed l
im
it (
85
%
)
1
2
1
2
=
35
10
Figure 4-2: Characteristic
