10
Signal flow
diagram
Fig. 4 illustrates the internal signals of the feeder
protection relay and their configuration. The
numbers given in the small squares refer to the
configuration switches to be used to connect the
control signals to the required functions and
configure the start and trip signals to operate as
desired output signals or AR initiation signals.
Fig. 4. Internal signals of feeder protection relay SPAA 341 C /E351.
I>
I>>
SPCJ 4D28 (U1)
IL1,IL2,IL3
IoB
Io
Uo
BS1
BS2
CBPOS
I>>>
I
o
>
I
o
>>
∆
I>
∆
t>
SS1
TS1
SS2
TS2
SS3
TS3
CBCS
SS4
t>>>
SGF6
1
2
3
4
5
6
SGF7
1
2
3
4
5
6
SGF8
SGF8
1
2
3
4
5
6
7
8
SGR11
SGR9
SGR7
SGR5
SGR3
SGR1
SGR10
SGR8
SGR6
SGR4
SGR2
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
SGB1
1
2
3
4
6
SGB2
1
2
3
4
SGB3
1
2
3
4
AR2
AR1
AR3
SS1
TS1
SS2
TS2
SS3
TS3
SS4
SPCJ 4D28/E351
(U2)
SGR1
2
1
3
4
5
6
7
SGR2
2
1
3
4
5
6
7
SGR3
2
1
3
4
5
6
7
SGR4
2
1
3
4
5
6
7
SGR5
2
1
3
4
5
6
7
SGR6
2
1
3
4
5
6
7
SGR7
2
1
3
4
5
6
7
SGR8
2
1
3
4
5
6
7
SGR9
2
1
3
4
5
6
7
SGR10
2
1
3
4
5
6
7
SGR11
2
1
3
4
5
6
7
0 -> I
AR1
AR2
AR3
AR4
SGB1
1
2
3
SGB2
1
2
3
ARSYNC
CINH
CBPOS
ARINH
CBCS
Shot 1 due
CBOS
Def trip AR4
Def trip AR3
Def trip AR2
Def trip AR1
Shot 2 due
CBFAIL
Shot 5 due
Shot 4 due
Shot 3 due
13
12
X2
43
X2
11
1
0
X2
21
X2
87
X2
16
15
X1
65
X2
14
13
X1
12
1
1
9
SPCT 5D54 (U3)
RRES
SP
AA
341 C /E351
t>
t>>
t
o
>
t
o
>>
I>
I>>
I>>>
I
o
>
I
o
>>
∆
I>
∆
t>
t>>>
SGF6
1
2
3
4
5
6
SGF7
1
2
3
4
5
6
SGF8
SGF8
1
2
3
4
5
6
7
8
SGR11
SGR9
SGR7
SGR5
SGR3
SGR1
SGR10
SGR8
SGR6
SGR4
SGR2
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
2
1
3
4
5
6
7
SGB1
1
2
3
4
6
SGB2
1
2
3
4
SGB3
1
2
3
4
t>
t>>
t
o
>
t
o
>>
AR2
AR1
AR3
Summary of Contents for SPAA 341 C /E351
Page 130: ......
