Himoinsa CEM7 - Page 83

(APPENDIX II) CONTROL UNIT SCREENS | PAGE 83
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 Conrm key (v)
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 Conrm key (v)
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Fig.1
Harmonics: Change selection by pressing the confirm key (v)
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 Conrm key (v)
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 Conrm key (v)
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Fig.2
Total harmonic distortion (without noise -THD- or plus noise -THDN-):
selection via the confirm key (v)
10. SYNCHRONIZATION
See Second Zero expansion manual.
11. HARMONICS
The control unit performs a calculation of the different voltage and current
harmonics. The information shown is:
• Spectrum graphic in frequencies.
• Values in % of the harmonic components up to 20.
• Total harmonic distortion (THD) and total harmonic distortion plus
noise (THDN) in %.
Using the arrow keys (+) (-) the signal to be analysed is selected (VG1, VG2, VG3,
VR1, VR2, VR3, I1, I2 or I3). To display the harmonic press the conrm key (v).
> Analysed signal: selection with cursors (+) (-).
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Fig.1
Analysed signal: selection with cursors (+) (-)
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Fig.2
Spectral analysis