UMG 509-PRO
62
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11.3.3
Events
Events are limit violations of set limit values for
current and voltage.
For this purpose, the limit values are compared
with the full-wave RMS values of current and volt-
age from the measurement channels.
The event recording includes:
An average value.
A minimum or maximum value.
A start time and an end time.
An event describes disturbances due to:
·Over-/undervoltage
·Overcurrent
·Over/under frequency
·Fast 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.
·An event is triggered if there is a limit violation
that remains uninterrupted throughout the lead
time.
·The event is terminated if there is no limit viola-
tion within the lag time.
Limit values and hysteresis are set in percent of
the nominal value. Limit values are configurable
for:
·Overvoltage and undervoltage
·Overcurrent.
If an event has occurred, the associated mea-
sured value is recorded with the set lead and lag
time (0..1000 full waves each).
Mode (delta)
If the difference between two adjacent sample
points exceeds the set limit value, a transient is
detected:
·
off
- The transient monitoring is switched off.
·
automatically
- Factory default. The limit value
is calculated automatically and is 0.2175 times
the momentary 200 ms RMS value.
·
manually
- The transient monitoring uses the
configurable limit values under "Trns U".
Apply L2-L4
·Transient monitoring can be configured per
phase. You can apply the settings from phase L1
to phases L2, L3 and L4.
·
No
- The settings from phase L1 are not applied
to phases L2, L3 and L4.
·
Yes
- The settings from phase L1 are applied to
phases L2, L3 and L4.
Monitoring of the transients can be switched off
(Off/Manual).
If a transient is switched off and on
again, the value is first initialized according to its
defaults. Either 85%,
110% or 150% depending on the setting.
