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The switches of switchgroup SGB of the com-
bined overcurrent and earth-fault relay module
SPCJ 4D24 are used for configuration of the
blocking and control inputs, and switchgroups
SGR1, SGR2 and SGR3 for configuration of
the output relay matrix. Relay module SPCJ
4D24 also includes the function selector
switchgroups SGF1 and SGF2.
Switch
Function
SGF1/4 When SGF1/4 = 1 the operation signal TS2 starts a timing
circuit, which gives an operation signal TS1, which is delayed
0.1...1.0 s delay, if the fault still persists after.
SGF2/7 Routes the start signal of the high-set overcurrent stage I>>
to the auto-reclose start line AR1
SGF2/8 Routes the start signals of the low-set stage I
stage I
>> of the earth-fault relay module to the auto-reclose
0
start line AR3
SGB/1
Blocking of low-set stage I> via control input BS1
SGB/2
Blocking of high-set stage I>> via control input BS1
SGB/3
Blocking of low-set stage I
SGB/4
Blocking of high-set stage I
SGB/5
Enables switching over from main settings to second settings
by means of a control signal to the control input BS1
SGB/6
Latching on activation of the overcurrent signal TS2
SGB/7
Latching on activation of the earth-fault signal TS2
SGB/8
Remote resetting of latched output via control input BS1
Checksum for the default settings of switchgroup SGB
SGR1/1 Routes the start signal of stage I> to SS1 and AR2
SGR1/2 Routes the operate signal of stage I> to TS2
SGR1/3 Routes the start signal of stage I>> to SS1 and AR2
SGR1/4 Routes the operate signal of stage I>> to TS2
SGR1/5 Routes the start signal of stage I
SGR1/6 Routes the operate signal of stage I
SGR1/7 Routes the start signal of stage I
SGR1/8 Routes the operate signal of stage I
Checksum for the default settings of switchgroup SGR1
SGR2/1 Routes the operate signal of stage I> to SS2
SGR2/2 Routes the operate signal of stage I> to AR1
SGR2/3 Routes the operate signal of stage I>> to SS2
SGR2/4 Routes the operate signal of stage I>> to AR1
SGR2/5 Routes the operate signal of stage I
SGR2/6 Routes the operate signal of stage I
SGR2/7 Routes the operate signal of stage I
SGR2/8 Routes the operate signal of stage I
Checksum for the default settings of switchgroup SGR2
The selector switches of the combined overcur-
rent and earth-fault relay module type SPCJ
4D24 shown in Fig. 9 have the following func-
tions:
> and high-set
0
> via control input BS1
0
>> via control input BS1
0
> to SS1 and AR2
0
> to TS2
0
>> to SS1 and AR2
0
>> to TS2
0
> to SS2
0
> to AR1
0
>> to SS2
0
>> to AR1
0
Default Weight
value
factor
0
8
0
64
0
128
0
1
0
2
0
4
0
8
0
16
0
32
0
64
0
128
0
1
1
1
2
0
4
1
8
0
16
1
32
0
64
1
128
171
1
1
0
2
1
4
0
8
0
16
1
32
0
64
1
128
165
21
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