Manual 37137B
ESDR 4 - Current Differential Protection Relay
Wiring Diagram
≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡
Current IL1 transducer set 2
Current IL2 transducer set 2
Current IL3 transducer set 2
Current IL3 transducer set 1
Current IL2 transducer set 1
Current IL1 transducer set 1
35
Subject to technical modifications.
The
tr
an
sdu
cer
ra
tio i
s a
dj
us
tab
le
in t
he di
sp
la
y.
L1
L2
L3
Tr
ans
du
ce
r s
et
1
30
25
26
27
28
29
G
The
tr
an
sdu
cer
ra
tio i
s a
dj
us
tab
le
in t
he di
sp
la
y.
Tr
an
sduc
er
set
2
36
33
34
31
32
18
Acknowledgement
Relay 1
Tripping
Relay 2
Tripping
Relay 3
Ready for operation
Relay 4
Warning
0 Vdc
24 Vdc
Common
Configuration
6
1
2
3
4
5
2004-10-01 | ESDR 4 Wiring Diagram e4ww-4004-ap.skf
12
11
10
9
7
8
13
16
15
14
17
Blocking
19
E
S
DR 4
- Cu
rr
en
t Di
ffe
re
nt
ia
l P
ro
te
ct
io
n Re
la
y
N/C
N/C
Figure 3-1: Wiring diagram
© Woodward
Page 9/35
