Table of Contents
Advertisement
25.3 Current Harmonics
Current harmonics is used to analyze the input current harmonics. An FFT of the
selected channel is performed to get the harmonic components. The signal settings and
connection guide are the same as the power quality test.
Configuration
Touch Config to recall configuration dialog box:
A. Set the frequency of the line (Auto, 50 Hz, 60 Hz or 400 Hz)
B. Set the standard type (IEC61000-3-2 A, IEC61000-3-2 B,
IEC61000-3-2 C or IEC61000-3-2 D)
C. Set the display type (Off, Bar Chart or Table)
D. Return to previous menu
Standard
IEC 61000-3-2 is an international standard that limits mains
voltage distortion by prescribing the maximum value for
harmonic currents from the second harmonic up to and including
the 40th harmonic current. There are 4 different classes in the EN 61000-3-2 that have
different limit values:
•
Class A: Balanced 3-phase equipment, household appliances excluding equipment
identified as class D, tools, excluding portable tools, dimmers for incandescent lamps,
audio equipment, and all other equipment, except that stated in one of the following
classes.
•
Class B: Portable tools, arc welding equipment which is not professional equipment
•
Class C: Lighting equipment.
•
Class D: PC, PC monitors, radio, or TV receivers. Input power P ≤ 600 W.I
1.800.561.8187
www.
.com
information@itm.com
T3DSO2000A Manual. Page 151
Advertisement
Table of Contents
