TR-2100 User Manual
78
Reactive Power
Reactive power is derived from the apparent and real powers.
Q
S
P
=
−
2
2
Power Factor
True power factor is the ratio of real to apparent power.
True
PF
P
S
=
Total Harmonic Distortion (THD)
The THD for an input is derived from the RMS and vector magnitude (V)
100
%
2
2
x
V
V
RMS
THD
−
=
This is the IEEE form of THD. In DSA32, the calculation of THD can be selected from
either the IEEE or ANSI standard. Refer to the DSA help file for a complete explanation of
the differences.
Summary of Contents for TR-2100
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