janitza UMG 512-Pro, User Manual And Technical Data

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UMG 512-PRO www.janitza.com
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11.3.3 Events
Events are limit violations of set limit values for
current and voltage.
Here, the limit values are compared with the half-
wave RMS values of current and voltage from the
measurement channels.
The event recording includes:
·Average value
·A minimum or maximum value
·A start time and an end time.
An event describes faults due to:
·Over-/undervoltage
·Rapid voltage changes
·Power failure (voltage loss)
·Overcurrent
·Over/under frequency
·Rapid frequency changes
Monitoring of the events can be switched off (Off/
Manual).
If you switch an event off and on again, the value
is first initialized according to its defaults. Either
85%, 110% or 150% depending on the setting.
Limit values and hysteresis are set on the device
as a percentage of the nominal value for:
·Overvoltage and undervoltage
·Voltage interruption
·Overcurrent.
If an event has occurred, the associated mea-
sured value is recorded with the set lead and lag
time (0..1000 half-waves each).
Threshold value
Measured value
Half wave
effective values
Event start time
(Trigger time)
End time
Event record
Event
Hysteresis
Hysteresis
Pre-run After-run
INFORMATION
Event recording can be set with a good over-
view using the GridVis® software
(see www.janitza.com).
INFORMATION
The lead and lag times can only be set using
the GridVis® software.
Factory default setting: 0
Fig. Configuring an event
Fig. Display of an overcurrent for an event