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User's Manual
Display the voltage, current and RMS of
power of each harmonics
Pressing the [
ratio), pressing the [▲] or [▼] key to turn the page to display the harmonic component of different orders.
5.4.3 HARMONIC SET
In the harmonic setting menu, it can set the harmonic analysis mode, PLL source, the maximum harmonic
analysis time and the calculation formula of THD. In the harmonic measurement interface, press the "SET"
key to enter the harmonic setting, the setting interface is shown as follows.
The calculation formula of THD has two methods, IEC and CSA. The default method is IEC.
IEC: Calculating the ratio of the RMS of the 2~50 harmonic components to the RMS of the
Instruments.uni-trend.com
Display the distortion factor of each
] or [
] key to switch to the display mode (display the harmonic content or harmonic
THD
fundamental waveform, the formula is as follows.
harmonics
n
( C
)
2
k
k=2
THD＝
C
1
UTE310 Digital Power Meter
Display the phase angle of voltage and
current of each harmonics
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