3.10 Combined overcurrent status 3 Supporting functions Technical description
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Setting parameters of timers
Parameter Value Description
TimerN
0
1
Timer status
Not in use
Output is inactive
Output is active
On hh:mm:ss Activation time of the timer
Off hh:mm:ss De-activation time of the timer
For each four timers there are 12 different
modes available:
The timer is off and not running. The output
is off i.e. 0 all the time.
Daily The timer switches on and off once every day.
Monday The timer switches on and off every Monday.
Tuesday The timer switches on and off every Tuesday.
Wednesday
The timer switches on and off every
Wednesday.
Thursday
The timer switches on and off every
Thursday.
Friday The timer switches on and off every Friday.
Saturday
The timer switches on and off every
Saturday.
Sunday The timer switches on and off every Sunday.
MTWTF
The timer switches on and off every day
except Saturdays and Sundays
MTWTFS
The timer switches on and off every day
except Sundays.
Mode
SatSun
The timer switches on and off every Saturday
and Sunday.
3.10. Combined overcurrent status
This function is collecting faults, fault types and registered
fault currents of all enabled overcurrent stages.
Combined over current status can be used as an indication of
faults. Combined o/c indicates the amplitude of the last
occurred fault. Also a separate indication of the fault type is
informed during the start and the trip. Active phases during
the start and the trip are also activated in the output matrix.
After the fault is switched off the active signals will release
after the set delay “clearing delay“ has passed. The combined
o/c status referres to the following over current stages:
I>, I>>, I>>>, I
Dir
>, I
Dir
>>, I
Dir
>>> and I
Dir
>>>>.
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