ZES ZIMMER LMG450, User Manual

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Z E S ZIMMER Electronic Systems GmbH Chapter 6
103
6 prCE-Harmonic measuring mode
In the prCE-Harmonic measuring mode the LMG450 works as an high precision harmonic
analyser. The number of settings have been reduced to the needed ones to avoid fail handling.
Note!
The synchronisation is fixed to U. For this reason it is important to have a valid signal for
synchronisation to get measuring results. The valid frequency range is from 45 to 65Hz!
6.1 Measuring configuration (Measuring)
The synchronisation is fixed to the voltage channel. With the rotary knob you can select three
tabs (‘Globals’, ‘Group A’ and ‘Group B’).
6.1.1 Global tab
Here the general settings are done.
Eval Selects how the measuring results have to be evaluated:
Class A The signal is judged according class A of EN61000-3-2:1995 or
EN61000-3-2:2006
Class B The signal is judged according class B of EN61000-3-2:1995 or
EN61000-3-2:2006
Class C-1 The signal is judged according class C, Table 1 of EN61000-3-2:1995
or EN61000-3-2:2006
Class C-2 The signal is judged according class C, Table 2 of EN61000-3-2:1995
or EN61000-3-2:2006
Class C-3 The signal is judged according class C, Table 3 of EN61000-3-2:1995
or EN61000-3-2:2006
Class C-W The signal is judged according class C, special waveform according
7.3 b) of EN61000-3-2:2006
Class D The signal is judged according class D of EN61000-3-2:1995 or
EN61000-3-2:2006
Table 2 The signal is judged according table 2 of EN61000-3-12:2005
Table 3 The signal is judged according table 3 of EN61000-3-12:2005
Table 4 The signal is judged according table 4 of EN61000-3-12:2005
EN... This selects the standard which defines the exact measuring mode of the harmonic
analyser: