hager h3+, Communication Instruction Manual

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6LE005550A
Function of the Energy trip unit
3.4 Managing alarms and logs
Note
These system alarms can be assigned to the OAC output contact. In this case,
the OAC pop-up will be added to other pop-ups on the respective displays.
3.4.6
Configuring alarms
Configuring the PTA overload pre-alarm
The trip threshold and time delay for the PTA overload pre-alarm can be adjusted.
The parameters are defined in relation to the long time delay lr and tr parameters.
PTA threshold (% Ir) PTA pre-alarm threshold
PTA time delay (% tr) PTA pre-alarm time delay
PTA pre-alarm setting Default setting
PTA threshold (% Ir) 60 to 95 (increments of 5%) 90
PTA time delay (% tr) 5 to 80 (increments of 5%) 50
Configuring the OAC output contact
The OAC output contact is set using two parameters.
- Alarm allocation
- Contact behaviour
OAC output setting Default setting
Alarm allocation See list. PTA overload pre-alarm
Contact behaviour Automatic - manual Automatic
List of alarms available to assign to the OAC output contact:
Alarms available
PTA overload pre-alarm
Custom alarm
1
Custom alarm 2
Custom alarm 3
Custom alarm 4
Custom alarm 5
Custom alarm 6
Custom alarm 7
Custom alarm 8
Custom alarm 9
Custom alarm 10
Custom alarm 11
Custom alarm 12
Internal trip unit error
Trip unit temperature alarm
Rupture of the neutral pole
None
Contact behaviour
In Automatic mode, the OAC contact will open automatically 500 ms after the alarm
disappears.
In Manual mode, the OAC contact will remain active after the fault disappears until
the alarm is cleared via the embedded display.