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UMG 512
Events
Events are threshold value violations of set threshold
values for current and voltage.
Here, threshold values are compared with the half
wave effective values for current and voltage from
the measurement channels. The event record consists
of a mean value, a minimum or maximum value, a start
time and an end time.
Fig. Shows the half wave effective values for an event.
Limit value
Measured
value
Half wave
effective value
Start time event
(Trigger time)
End time
Event record
Event
Hysteresis
Hysteresis
Pre-run
After-run
• An event describes a fault due to undervoltages/
overvoltages, voltage loss, overcurrent, overfrequency/
underfrequency and rapid frequency changes
• Monitoring of the threshold values can be switched
off (Off/Manual).
• Threshold values and hysteresis must be set as
a percentage of the nominal value.
• Threshold values can be set for excess voltage,
undervoltage, voltage interruption and overcurrent.
• If an event has occurred, the corresponding measured
value is recorded with the set pre-run and after-run
periods (respectively 0..1000 half waves).
• Event records are configured with the GridVis
and displayed with the event browser.
Содержание UMG 512
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