17-11
IM DL850E-01EN
Measurement Function Types
The following measurement functions are available.
• Rms Value Measurement Functions
RMS (rms values of the 1st to the 40th harmonic), Rhdf (percentage contents of the 1st to the 40th harmonic),
φ (phases of the 1st to the 40th harmonic), RMS (total rms value), HdfIEC (distortion factor: IEC), HdfCSA
(distortion factor: CSA)
• Active Power Measurement Functions
P (active powers of the 1st to the 35th harmonic), Phdf (active power percentage contents of the 1st to the
35th harmonic), φ (active power phases of the 1st to the 35th harmonic), P (all active powers), S (all apparent
powers), Q (all reactive powers), λ (power factor),
U1 (1st harmonic rms voltage), U2 (1st harmonic rms voltage), U3 (1st harmonic rms voltage), I1 (1st
harmonic rms current),
I2 (1st harmonic rms current), I3 (1st harmonic rms current), φU1-U1 (phase angle), φU1-I1 (phase angle),
φU1-U2 (phase angle), φU1-I2 (phase angle), φU1-U3 (phase angle), φU1-I3 (phase angle)
Analysis Mode (Analysis Mode)
Select the harmonic analysis item.
• Line RMS: Harmonic analysis is performed on voltage and current.
• Power: Harmonic analysis is performed on active power.
• OFF: Harmonic analysis is disabled.
When the Analysis Mode Is Line RMS
• Math Source Waveforms (Source)
The modules described in “
Harmonic analysis can be performed only when one of the following modules
is installed in a slot other than slot 8
” under “Harmonic Analysis (Harmonic)” are applicable. CH15 or CH16
cannot be selected.
• Edge Detection Source (Edge Source)
The same channel as the math source waveform (cannot be changed).
• Hysteresis (Hysteresis)
The same as the standard feature. For details, see “
• Edge Source Filter (Edge Source Filter)
Select from the following.
OFF, 128 kHz, 64 kHz, 32 kHz, 16 kHz, 8 kHz, 4 kHz, 2 kHz, 1 kHz, 500 Hz, 250 Hz, 125 Hz, 62.5 Hz
This is the same as “
” described under “Power Analysis (Power).”
• φ Scaling (φ Scale)
Select how to display phase differences.
Radian: Radian
Degree: Degrees
When the Analysis Mode is Power
• Wiring System (Wiring)
The same as
under “Power Analysis (Power).”
• Math Source Waveforms (U1 to U3, I1 to I3)
The options are the same as those for Line RMS analysis mode.
17 Power Math