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CTS Series - IEC 61000-3-2 Harmonics Test

Simple User Interface

All IEC Harmonics tests can be accessed from a single

control and data display window on the PC. Both Quasi

Stationary and Transitory (Fluctuating) Harmonics tests can

be run. The operator is presented with a simple screen that

shows the type of test that will be run and the test duration.

Clearly labeled buttons are provided for Starting and Stop-

ping a test. During the test run, voltage and current time

domain waveform displays are updated in real time. The

left part of the display shows all power analyzer param-

eters for the EUT such as V

RMS

, I

RMS

, I

FUND

PEAK

, Real Power,

Apparent Power and Power Factor. The current harmonics

window displays instantaneous current harmonics and a

line marking the applicable test limits. During the entire test

run, a clear PASS or FAIL indication is provided. Any con-

ditions occurring during the test run that may affect the test

results can be displayed. This includes voltage THD of the

AC source, which is monitored during the entire test. Infor-

mation about the operator and the unit under test can be

entered. A general user comment field is provided to enter

any relevant data concerning the test. All this information is

added to the final test report.

Available Data Displays

The following graphics displays are provided in the IEC

61000-3-2 test program

• Voltage and Current time domain

• Current Harmonics and IEC limits graph

• AC Source Voltage Harmonics and IEC

limits graph

• Numeric display of F, V

RMS

, I

RMS

, I

FUND

PEAK

, PF, W, VA

Test Reports & Data Logging

A complete IEC harmonics test report, which includes all

test results for the EUT, can be printed at the end of the

test. This report includes graphs showing voltage and cur-

rent waveforms as well as current harmonic spectrum and

class limits. All graphs are included in the test report or can

be copied to the Windows

Clipboard for inclusion in cus-

tom reports. Comprehensive test data, including timing

waveform data, is available from disk for use in detailed

reporting or further data analysis applications. Data is stored

in ASCII format files that can be loaded directly in popular

spreadsheet programs. A test file replay mode is supported

by the CTS system software that allows frame by frame

playback of test data files for detailed analysis of EUT be-

havior.

Simple buttons start

and stop automated

test.

Key EUT electrical pa-

rameters are updated

continuously.

User selectable test

limit margin.

Test start time and test

progress are clearly in-

dicated.

Clearly marked Pass

(Green) or Fail (Red) in-

dication is active during

the entire test run. AC

Source distortion is

also monitored at all

times.

Graphs and reports

provide complete test

data documentation.

Both Voltage and

Current waveforms

are shown in real-

time. For class A

and D test, the spe-

cial waveshape tem-

plate (red) is shown.

Bottom graphs show

current harmonics

against IEC class

limits. The user can

also view the source

voltage harmonics

in real-time.

Equipment Under

Test description and

operator ID are

added to all test re-

ports.

IEC Harmonics Test Window

Real-time Voltage Distortion against IEC limit

1 2 3 4 5 6 7 8

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