7
Front panel
SGR
SGB
SGF
SPCJ 4D28
TRIP
PROGRAM
RESET
STEP
L1
L2
L3
o
IRF
3 >
I
I
I
I
I
I
>
n
I
I
/
k
n
>>
I
I
/
k
0
n
0
>
I
I
/
0023A
n
I
/
I
>>
>
>>
t
[ ]
s
s
t
>>
>
[ ]
s
0
>
t
[ ]
0
t
s
[ ]
n
0
I
I
/
>>
>
t
[ ]
s
>
t
[ ]
s
∆
>
I
∆
>>
%
[ ]
Phase current and residual current indicators during
current measurement and phase fault indicators
at relay operation
Indicator for the start current of stage I>
Indicator for the operate time t> or time multiplier k
Indicator for the start current of stage I>> and
the operate time t>>
Indicator for the start current of stage I>>> and the
operate time t>>>
Indicator for the start current of stage I
0
>
Indicator for the operate time t
0
> and the time multiplier k
0
Indicator for the start current of stage I
0
>> and the
operate time t
0
>>
Indicator for the start current of stage
∆
I> and
the operate time t
∆
>
Indicator for the checksums of switchgroups SGF1...8
Indicator for the checksums of switchgroups SGB1...3
Indicator for the checksums of switchgroups SGR1...11
Fig. 3. Front panel of the combined overcurrent and earth-fault relay module SPCJ 4D28
SGR
SGB
SGF
SPCJ 4D28
TRIP
PROGRAM
RESET
STEP
L1
L2
L3
o
IRF
3 >
I
I
I
I
I
I
>
n
I
I
/
k
n
>>
I
I
/
k
0
n
0
>
I
I
/
0023A
n
I
/
I
>>
>
>>
t
[ ]
s
s
t
>>
>
[ ]
s
0
>
t
[ ]
0
t
s
[ ]
n
0
I
I
/
>>
>
t
[ ]
s
>
t
[ ]
s
∆
>
I
∆
>>
%
[ ]
Device symbol
Indicator for self-supervision alarm
Display window
Reset and display step push-button
Setting push-button
Operation indicator
Type designation of relay module
Содержание SPAA 341 C /E351
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