MI 2792 PowerQ4 Plus
Recording Practice and Instrument Connection
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Step 2.4: Event setup (optional)
Use this step only if voltage events are object of concern. Select nominal voltage and
threshold values for: dip, swell and interrupts (see sections 3.16.2 and 3.13 for details).
Note:
Enable events in EVENT SETUP only if you want to capture events, without
RECORDER assistance.
Step 2.5: Alarm setup (optional)
Use this step only if you would like only to check if some quantities cross some
predefined boundaries (see sections 3.14 and 3.16.3 for details).
Note:
Enable alarms capture only if want to capture alarms, without assistance of
RECORDER.
Step 2.6: Signalling setup (optional)
Use this step only if you are interested in measuring mains signalling voltage.
Step 3: Inspection
After setup instrument and measurement is finished, user need to recheck if everything
is connected and configured properly. Following steps are recommended.
Using PHASE DIAGRAM menu check if voltage and current phase sequence is
right regarding to the system. Additionally check if current has right direction.
Using U, I, f menu check if voltage and current value has proper value.
Additionally check voltage and current THD.
Note:
Excessive
THD can indicate that too small range was chosen!
Note:
In case of AD converter overloading current and voltage value will be
displayed with inverted color
250.4 V
.
Note:
If phase current or voltage value are not within 10% ÷ 150% of the range,
their values will be displayed with inverted color
0.4 V
.
Using POWER menu check signs and indices of active, reactive power and
power factor.
If any of these steps give you suspicious measurement results, return to Step 2 and
double check measurement parameters.
Step 4: On-line measurement
Instrument is now ready for measurement. Observe on line parameters of voltage,
current, power, harmonics, etc. according to the measurement protocol or customer
issues.
Note:
Use waveform snapshots to capture important measurement. Waveform
snapshoot capture all power quality signatures at once (voltage, current, power,
harmonics, flickers).
Step 5: Recorder setup and recording
Using RECORDERS menu select type of recording and configure recording parameters
such as:
Recorder Signals included in recording
Time Interval for data aggregation (IP)
Record
duration
Recording start time (optional)
