Pq Monitoring; Pq Events - Camille Bauer LINAX PQ5000-CURRENT LINK System Handbook

7.6 PQ monitoring

Power quality monitoring provides both a statistical evaluation, allowing an assessment of compliance
with standards (e.g. EN 50160) or supply contracts, as well as records of events in the grid (e.g. power
voltage dips). This facilitates the analysis of causes and effects. Compliance reports may also be created
directly via the website of the device.

7.6.1 PQ events

The device monitors all voltage events in accordance with IEC 61000-4-30. The default values of the
trigger thresholds correspond to the common values of the EN 50160 for a public low-voltage distribution
system, but can be changed by the user to individual needs.
In addition to the requirements of IEC 61000-4-30 the device can monitor current swells and frequency
anomalies.
Monitored events
Voltage dip
Voltage interruption
Voltage swell
Rapid voltage change
Homopolar voltage
Frequency anomaly
1) Related to the respective threshold
The device does not verify the user-defined event parameters. If these values are not plausible,
events may be not recognized correctly or misclassified. In particular, the trigger threshold for
RVC events should not be greater than half of the difference of the threshold values of voltage
swell and voltage dip.
Recordings
If any of the above events occurs, the device records both the half-cycle RMS values and the samples of
all voltage and current channels. The event recording times can be configured using the menu Settings |
Power quality | Event recording:
Note: The event recording time "RMS(1/2): After triggering" is a maximum recording time. It is reduced to the real
event duration + 1s, if the event duration is shorter than the configured time.
Recorded PQ events can be
PM 1002670 000 00
Threshold
90%
10%
110%
6%
50%
lower: 99%
upper: 101%
visualized either via the local display or the webpage of the device.
System handbook PQ5000-Current Link
Hysteresis Reference value
2%
2%
2% Nominal voltage
50%
1)
2%
0.5% Nominal frequency
Possible recording times
≤1.0s
≤180.0s
≤1.0s
≤5.0s
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