7
Front panel
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/E351
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
SGR
SGB
SGF
SPCJ 4D28/E351
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
/
0977A
n
I
/
I >>
>
>>
t
[ ]
s
s
t
>>
>
[ ]
s
0
>
t
[ ]
0
t
s
[ ]
n
0
I
I
/
>>
>
t
[ ]
s
>
t
[ ]
s
∆
>
I
∆
>>
%
[ ]
SGR
SGB
SGF
SPCJ 4D28/E351
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
/
0977A
n
I
/
I >>
>
>>
t
[ ]
s
s
t
>>
>
[ ]
s
0
>
t
[ ]
0
t
s
[ ]
n
0
I
I
/
>>
>
t
[ ]
s
>
t
[ ]
s
∆
>
I
∆
>>
%
[ ]
Summary of Contents for SPAA 341 C /E351
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