AMETEK CTS 3.0 - Manual (Page 122)

Compliance Test System 3.0 User Manual
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11.2 Test Setup
The required IEC 61000-4-27 test parameters must be entered in the test data entry grid before
running a test. Previously stored test files can be loaded from the File, Open menu. Test files
use a .427 file extension and only files with this extension can be loaded.
The CIGUI32 or CIGuiSII is distributed with a pre-defined test parameter files for the generic IEC
61000-4-27 product classes 2 and 3. Additional test parameter files e.g. for test level x, can be
created by the user by editing the data entry grid and saving the new data under a user specified
name.
The following parameters and controls are available for executing the IEC 61000-4-27 test:
Field / Control Description
Nominal voltage Opening this window will set this parameter to the present steady state
voltage setting of the AC source. If required, a new value can be entered
for use during the test. At the end of the test, the AC source will remain at
this voltage level. If needed, the program will switch the AC source to the
high voltage range and close the output relay when the test is started.
Nominal frequency Opening this window will set this parameter to the present steady state
frequency setting of the AC source. Available selections are 50 Hz or 60
Hz. At the end of the test, the AC source will remain at this frequency.
EUT Class The EUT class determines the test levels used.
Test number Allows selection of one or more test numbers. If all test numbers are
selected, they will be executed in sequential order.
Performance Criterion This selection will be used to indicate in the test report how the outcome
of the test was evaluated. The criteria are explained here.
Execution Parameters Number of sequences to run:
A number of one indicates that the test level selected will be run one time
per phase rotation for a total of 3 times. A number greater than one will
result in repeating the same phase rotation that many times.
Delay between sequences in minutes:
A delay of 3 minutes minimum is required between tests. This value may
be extended if desired.
Pre-test delay in seconds:
Time to wait in seconds between applying power to EUT and starting the
first test sequence.
Phase Mode This test is only valid when the power system is in three-phase mode so
no phase mode selection is available. The phase mode is always three
phase.
Start Starts the IEC 61000-4-27 test using the parameters set by the user. Test
progress is shown at the bottom of the window. The sequence numbers
shown correspond to those in the illustration.
Stop Aborts test in progress.
All IEC 61000-4 tests require setting of the rated nominal voltage and frequency of the EUT. The
nominal values must be entered in the Test Setup Vnom and Fnom data fields before starting a
test. When the IEC 61000-4 test windows is first opened, the present AC source settings are
automatically loaded as the nominal values. These values are overridden by selecting each data
entry field and typing in a new value or by loading a test parameter file from the File, Open menu.
Thus, test data file also contain the nominal voltage and frequency values to be used.
11.3 Equipment Classifications
In Annex B of the standard, the EUT operating environment classifications are defined based on
IEC 61000-2-4. The classifications are as follows: