MI 2792 PowerQ4 Plus
Operating the instrument
25
3.3 Power menu
In POWER menu instrument show measured power parameters. Results can be seen in
a tabular (METER) or a graphical form (TREND). TREND view is active only while
RECORDER is active. See section 3.9 for instructions how to start recorder. In order to
fully understand meanings of particular power parameter see sections 5.1.5 and 5.1.6.
3.3.1 Meter
By entering POWER menu from Measurements menu the POWER – METER tabular
screen is shown
(see figure below)
. METER screen show power, voltage and current
signatures.
Figure 3.18: Power
measurements summary
Figure 3.19: Detailed Power
measurements at phase L1
Description of symbols and abbreviations used in METER screens are shown in table
bellow.
Table 3.11: Instrument screen symbols and abbreviations
Show currently displayed channel.
Current recorder status:
RECORDER is active
RECORDER is busy (retrieving data from memory)
RECORDER is not active
Current instrument time
P, Q, S
Instantaneous active (P), reactive (Q) and apparent (S) power
PF, DPF
Instantaneous power factor (PF) and displacement power factor (cos
φ
)
U
True effective value U
Rms
I
True effective value I
Rms
RMS
True effective value U
Rms
and I
Rms
THD
Total harmonic distortion THD
U
and THD
I
CF
Crest factor Cf
U
and Cf
I
