7-24
IM CW240E
7.6
Measuring Harmonics
Harmonic measurements (analysis of 1st to 50th harmonics) can be displayed
in any of three screens: List, Graph, and Vector.
List Screen
Graph Screen
Vector Screen
●
Items to be Measured
Elements to be Measured
Items to be Measured (Analyzed)
Voltage
U1, U2, and U3
Level [V]
rms value
Content (%)
Phase angle [deg]
Current
I1, I2, I3, and I4
Level [A]
rms value
Content (%)
Phase angle [deg]
Power
P
Level [W]
Power value
Power content (%)
Power phase angle [deg]
The unit of phase angle, degree [deg], is an angle (
°
).
Level
: harmonic level at each order
Content
: the percentage of harmonic component with the fundamental
wave regarded as 100%
Phase angle : phase angle with respect to the reference set by a phase angle
calculation method
Items to be Measured
(Analyzed)
Description
TOTAL
For voltage:
Total rms value [V]
For current:
Total rms value [A]
For power:
Total power value [W]
THD
Total Harmonic
Distortion
THD is set using the THP MEASURE METHOD on the
General 2/2 screen.
Select either the fundamental wave base or total base.
f
Frequency of fundamental wave (frequency source) [Hz]