Total Harmonic Distortion - Fluke 1735 User Manual

1735
Users Manual
S V I
P
PF
S
2 2
D S P
P
1
cos
2
P
1
The distortion power is > zero if the waveform of current is different
from the voltage waveform.

Total Harmonic Distortion

40
∑
( V
h 2
THD
V 1
50
apparent power
power factor
2
Q
distortion power
cosine cos
2
Q
1
2
)
h
100 %
Note
Total Harmonic Distortion
V1 to RMS of the fundamental
Vh to RMS of the h-th harmonic