User Manual

Functional Description

4.5 HARMONIC mode

4.5.1. Keys/keyboard active in Harmonic mode

4.5.2. Principle

The Harmonic mode

is used to display the breakdown into harmonics of a voltage or a current of which the

signal is steady-state or quasi-steady-state. It establishes a first diagnostic of the harmonic

pollution of an installation.

The principle of this mode is to display a graph of the fundamental frequency of order 1

and 63 harmonic orders.

The time base is adaptive; it is not adjusted manually.

This analysis is only for signals having a fundamental frequency between 40Hz and

450Hz.

Only channels CHx (not the functions or the memories) can undergo a harmonic analysis.

The harmonic analyses of 2 (OX 2 channels) or 4 (OX 4 channels) signals can be

displayed simultaneously.