ABB SPAJ 141 C User Manual And Technical Description page 37

F r o n t p a n e l
Current measurement indicators
for phases L1, L2, L3 and I
Indicator for starting value setting of stage I>
Indicator for setting ofoperating time t> or time
multiplier k of stage I>
Indicator for starting value setting of stage I>>
Indicator for operating time setting of stage I>>
Indicator for starting value setting of stage I
Indicator for setting of operating time t
Indicator for starting value setting of stage I
Indicator for operating time setting of stage I
Indicator for switchgroup SGF1..2 checksum
Indicator for switchgroup SGB checksum
Indicator for switchgroup SGR1...3 checksum
Type designation of plug-in module
Fig. 2. Front panel of the combined overcurrent and earth-fault module SPCJ 4D24
O p e r a t i o n i n d i c a t i o n s
Each overcurrent stage has its own starting indicator and operation indicator shown as a figure in the digital
display. Further all stages share a common indicator named "TRIP", and a red LED indicates that the module
has delivered a tripping signal.
The operation indicator in the display remains illuminated when the current stage resets, thus indicating which
protection stage was operating. The operation indicator is reset with the RESET push-button. The function
of the plug-in module is not affected by an unreset operation indicator. If a starting of a stage is short enough
not to cause a trip, the starting indication is normally self-reset when the stage is reset. By means of switches
SGF2/1...4 if needed, the starting indicators can be programmed for manual resetting. The following table
shows the starting and tripping indicators and their meanings.
Indication Explanation
1 I> START
2 I> TRIP
3 I>> START =The high-set stage I>> of the overcurrent unit has started
4 I>> TRIP
5 I > START =The low-set stage I
o
6 I > TRIP
o
7 I >> START =The high-set stage I
o
8 I >> TRIP
o
9 CBFP
PAINOS PAINOS
o
>
o
>
o
>>
o
>>
o
=The low-set stage I> of the overcurrent unit has started
=The low-set stage I> of the overcurrent unit has tripped
=The high-set stage I>> of the overcurrent unit has tripped
> of the earth-fault unit has started
o
=The low-set stage I > of the earth-fault unit has tripped
o
>> of the earth-fault unit has started
o
=The high-set stage I >> of the earth-fault unit has started
o
=The circuit breaker failure protection has operated
Simplified device symbol
3I>
IL1 IL2 IL3 Io
IRF
Self-supervision alarm
indicator
Display
I>[In]
RESET
STEP
Reset and display step
t>[s]
k
push-button
I»[In]
t»[s]
Io>[%In]
to>[s]
Io»[%In]
to»[s]
PROGRAM
SGF
Programming push-button
SGB
SGR
Trip indicator TRIP
SPCJ 4D 24
5