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Transcript
Overview of functions
Harmonic measurements
Quality indicators
Micrologic H control units can quantify and evaluate the harmonic distortion of
current and voltage waves using the quality indicators listed below:
b measurement of the fundamental signal
b phase displacement of the fundamental signals
b harmonic distortion THD and thd
b cos ϕ
b power factor
b K factor
b distortion power
b distortion factor
b crest factor
b amplitude spectrum of even and odd harmonics up to order 31
b displacement spectrum with respect to V1N of even and odd harmonics up to
order 31.
These indicators are the indispensable tools used to determine any required
corrective action.
Access to quality indicators
The quality indicators may be accessed on the Micrologic H screen and/or via the
communication module.
Quality
indicator
Measurement of
the fundamental
Phase displacement of
the fundamental
Harmonic distortion
THD and thd
Cos ϕ
Power factor
K factor
Distortion power
Distortion factor
Crest factor
Amplitude spectrum of
odd harmonics up to order 31
Amplitude spectrum of
even harmonics up to order 31
Displacement spectrum
ith respect to V1N of
even and odd harmonics
up to order 31
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On the Micrologic H
screen
Via the
communication
module
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b
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b
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04443728AA - 01/2009