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ISO 9001:2000
CTS Series - EN / IEC 61000-3-2 & EN / IEC 61000-3-12 Harmonics Test
Test Selections
At the onset of a harmonics test, the operator is able to select from a number of
options using the setup screen shown here. Version 3.0 of the CTS software supports
the IEC 61000-3-2:Ed. 3 (2005) standard and the user can select inter-harmonic
evaluation, with grouping according to the method specied in IEC61000-4-7.
Data is acquired in 10 cycles per window for 50 Hz EUT’s and 12 cycles per window
for 60 Hz EUT’s (200 msec time windows), and products may be evaluated per the
European limits at 230 Volt, or 100, 120, or 200 Volt per the Japanese limits.
The rated current, respectively power level of class C or D EUT’s can be entered
based on the manufacturer’s rating. The CTS system will verify that the averaged
EUT power is within 10 % of the stated value and recalculate the limits for class C
and D products if it is outside of the tolerance level. The user may also select the
test for self-ballasted lamps per clause 7.3.b of IEC61000-3-2. For this test, current
conduction angles and the peak current phase are compared against the permissible
limits, as well as the 3rd and 5th harmonic levels.
The operator can select nominal voltage and frequency for the EUT, all from the
same setup screen. If needed, the Japanese evaluation method may be selected in
lieu of the more common European standard. Settings can be saved to disk for later
recall and are also retained with the data records of any test run.
For Class-D products, the power level is veried, and the password protected
conguration screen permits the system administrator to dene the minimum power
level that is acceptable for Class-D. Thus, the system can easily be recongured if
either the 75 Watt lower power or the 600 Watt upper bound for Class-D products
is changed in the future. This same capability is available for low power Class-C
products, in the event the 25 Watt boundary level for self ballasted lamps is changed
in a future amendment.
Simple User Interface
All IEC Harmonics tests can be accessed from a single control and data display
window on the PC. Simple on screen buttons control test setup and execution.
During the test run, voltage and current time domain waveform displays are updated
The CTS system oers full compli-
ance harmonics testing per EN/IEC
61000-3-2 Ed. 3 (2005) as well as EN/
IEC 61000-3-12 (additional software
will be required). Third generation
software version 3.0 implements the
latest revisions of the test standard.
The CTS system supports several new
capabilities that are required to meet
IEC 61000-4-7 Ed. 2 and upcoming
amendments thereto. This includes
measurement of both harmonics and
interharmonics, Partial Odd harmonic
Current (POHC) and Partial Weighted
Harmonics Distortion (PWHD) evalu-
ation per the latest standards.
In addition, the system measures the
H
5
phase and determines if there is a
prevailing phase angle per IEC61000-
3-12 (CTS-H version).
Despite these advanced capabilities,
the CTS system remains as easy to
use as it has been from its rst incep-
tion, with easy conguration and test
selection menus.
CTS System GUI Setup Window
Harmonics Test Report in MS Word
(216 paginas)
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