Schneider Electric HRB1684301-01 user manual Displaying harmonics data

PowerLogic™ PM5500 series user manual Chapter 13—Power quality

Displaying harmonics data

For meters equipped with a front panel display, the following harmonics data is available:

•Numeric magnitude and angle of the fundamental (first) harmonic.

•Graphical display of the 3rd to 31st harmonics, expressed as a percentage of the fundamental harmonic.

Viewing harmonics using the front panel

You can view harmonics data using the front panel.

1.Navigate to Harm. The Harmonics % screen displays, with the following menu options:

Harmonics % display screens

IEEE mode	IEC mode	Description
V L-L	U	Line-to-line voltage harmonics data
V L-N	V	Line-to-neutral voltage harmonics data
Amps	I	Current harmonics data
TDD/K	TDD/K	Total demand distortion and K-factor data
Crest	Crest	Crest factor data

2.Press the voltage or current harmonics you want to view. The fundamental (1st) harmonic’s numeric magnitudes and angles for all phases are displayed.

3.Press 3-11,13-21, or 23-31to view the graphs for the 3rd to 11th, 13th to 21st, or 23rd to 31st harmonics, respectively. For example, to display the 13th to 21st harmonics screen, press 13-21.

Example: 13th to 21st harmonics for line-to-neutral voltage

Phase A

Phase B

Phase C

The vertical axis of the harmonics graph indicates the harmonic’s magnitude as a percentage of the fundamental harmonic, and is scaled based on the largest harmonic displayed. At the top of each vertical bar is a marker that shows the maximum value of the harmonic. If the harmonic is greater than the fundamental harmonic, this marker is triangular-shaped to show that the value is out of range.

NOTE: The display screen only shows odd harmonics up to the 31st harmonic. However, all individual odd and even harmonics data up to the 63rd harmonic is available through communications and software. Individual harmonics data include current harmonics per phase, neutral and ground, and voltage harmonics line-to- line, line-to-neutral and neutral to ground.

Viewing TDD, K-factor and Crest factor data

1.Navigate to Harm > TDD/K. The TDD and K-factor per phase information displays.

Power Quality display screens

IEEE mode	IEC mode	Description
TDD	TDD	Total demand distortion
K-F A	K-F A	K factor for phase A

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