Thd V - In Function A - Fluke 1745-BASIC User Manual

THD V – In Function A
Function A:
V RMS value of harmonic frequency #n.
n:
V RMS value of the fundamental frequency.
1:
THDV: total contents of harmonics of the line power voltage as a percentage
of the fundamental.
This algorithm is according to EN 61000-4-7.
THD of currents:
Function A:
I RMS value of harmonic frequency #n.
n:
I RMS value of the fundamental frequency.
1:
THDI: total contents of harmonics of the current as a percentage of the
fundamental.
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∑
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THD V
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THDI
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Using the 1745 Power Quality Logger
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V
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1
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n
THDI A
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I
n
n 2
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