User manual

User Manual Compliance Test System 3.0

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

Figure 9-2: IEC 61000-4-14 Test Sequence

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 F

ile, Open menu. The default location for IEC test files is:

C:\Program Files\California Instruments\Cigui32\IEC_Test

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

California Instruments Revision N 111