Schneider Electric PM5300 manual Viewing TDD, Viewing THD/thd using the front panel

Models: PM5300

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PowerLogic™ PM5300 series user guide

Chapter 11—Power quality

 

 

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.

Viewing TDD

1.Navigate to Harm > TDD. The Total demand distortion information displays.

Power Quality display screen

IEEE mode

IEC mode

Description

 

 

 

TDD

TDD

Total demand distortion

NOTE: Your meter’s Modbus map includes registers for harmonics data for integration into your power or energy management system.

2. Press to return to the main display screens.

Related topics

See “Front panel display and meter setup” on page 31 for front panel menu navigation details.

Search PM5300 Modbus register list at www.schneider-electric.com to download the Modbus map.

Viewing THD/thd using the front panel

You can view THD/thd data using the front panel.

1.

Navigate to THD. On the THD/thd Select screen, press THD to display values that

 

use the calculation method based on the fundamental harmonic, or thd to display

 

values that use the calculation method based on the RMS value of all harmonics in

 

that phase (including the fundamental).

 

THD (or thd) display screens

 

 

 

 

 

 

 

 

IEEE mode

IEC mode

Description

 

 

 

 

 

 

 

Amps

I

Total harmonic distortion data for per phase and neutral currents.

 

 

 

 

 

 

 

V L-L

U

Total harmonic distortion data line-to-line voltage.

 

 

 

 

 

 

 

V L-N

V

Total harmonic distortion data line-to-neutral voltage.

 

 

 

 

 

2.

Press the current or voltage THD or thd values you want to view. The total harmonic

 

distortion percentage values are displayed.

3.

Press to return to the main display screens.

NOTE: Your meter’s Modbus map includes registers for total harmonic distortion data for integration into your power or energy management system.

© 2014 Schneider Electric All Rights Reserved

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Schneider Electric PM5300 manual Viewing TDD, Viewing THD/thd using the front panel, Power Quality display screen