AMETEK CTS 3.0 - Manual (Page 112)

Compliance Test System 3.0 User Manual
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9.4 Test Sequence
The test sequence implemented by this test consists of a series of voltage fluctuations consistent
with commonly found phenomena on the public utility power grid. The objective of this test is to
evaluate a product for immunity from such fluctuations.
Voltage fluctuations are applied at different levels for different product categories. The user must
determine the product class and select the appropriate test level. During the test run, voltage
changes are applied as specified by the selected test mode and for specified periods of time.
The test sequence can be programmed by setting the nominal voltage in %, the test level which is
the change from the nominal voltage in %, the number of times each test level repeats
(consecutive 5 second periods) and the delay between each set of test levels. Finally, each step
in the sequence data grid can be repeated 1 or more times. (A Delay of 1 means the set it only
run once.) The various columns in the test data setup are shown in the figure below. In this
example, the following parameters were specified in the data entry grid:
Unom (%) Test Level (%) Level Repeat Delay Repeat
100 8 3 60 1
Note that the sequence of voltage changes is different if the Unom is at 100 % than at any other
value. At 100 % Unom, the voltage changes occur in both positive and negative directions
(alternating). If the test level (%) is set to a negative value and Unom is 100 %, the voltage
changes are reversed.
These parameters can be entered on screen by the operator or loaded from disk. To load a new
test or test class, select the File, Open menu. The default location for IEC test files is:
C:\Program Files\California Instruments\Cigui32\IEC_Test
Or
C:\Program Files\California Instruments\CiguiSII\IEC_Test
The following four IEC 61000-4-14 test files are distributed with the CIGui32 or CIGuiSII program:
File Name Test Class
Generic IEC 1000-4-14 Test Class 2.414_Fluc Class 2
Generic IEC 1000-4-14 Test Class 3.414_Fluc Class 3
Figure 9-2: IEC 61000-4-14 Test Sequence