IEC 61000-4-37-2016 pdf download.ELECTROMAGNETIC COMPATIBILITY (EMC) – Part 4-37: Testing and measurement techniques – Calibration and verification protocol for harmonic emission compliance test systems.
3 General Many products that are to be tested per IEC 61 000-3-2 or IEC 61 000-3-1 2 exhibit what is known as steady state or quasi stationary powers and harmonic current emissions. To evaluate whether such products meet the requirements set forth in IEC 61 000-3-2 or IEC 61 000-3-1 2, a variety of simple analyzers could be used. Thus, the analyzer used for these simple tests need not meet all the tests described in this Technical Report. For analyzers that are to be used in general purpose testing laboratories, or that are to be used to evaluate products exhibiting fluctuating harmonics, it is recommended to meet all of the applicable requirements set forth in this report. The test procedures are therefore defined in increasing order of complexity, allowing the user to just select the most basic tests for simple harmonic current emissions analysis, or perform a more extensive set of evaluations.
Furthermore, the requirements of both IEC 61 000-3-2 and IEC 61 000-3-1 2 have been considered. Harmonic analysis systems generally include a dedicated AC power source, although analysis may be performed using the mains voltage under certain conditions. Even though this Technical Report is not intended as an exhaustive test for AC power sources used in IEC compliance test systems, it verifies the suitability of such sources per the requirements specified in IEC 61 000-3-2 and IEC 61 000-3-1 2. The proposed tests are valid for harmonic current measurements at 1 00 V, 1 20 V, 220 V, and 230 V AC line-neutral at 50 Hz and 60 Hz, but are primarily aimed at 230 V/50 Hz systems. Additional tests, specific for IEC 61 000-3-1 2, may be defined in a future edition of this Technical Report. Furthermore, this Technical Report does not have provisions to test system accuracies for all of the evaluation methods used in the Japanese edition of successive IEC 61 000-3-2 versions, although it largely supports the requirements of JIS C 61 000-3-2.
This Technical Report does not cover harmonic emission tests where a series line impedance network would be required, such as specified in Figure 1 -1 and Figure 1 -1 A of JIS C 61 000-3-2:201 1 . As shown in various papers and actual tests, the use of a series line impedance, as specified in earlier editions of the Japanese standard JIS C 61 000-3-2, can produce complex and unpredictable results, and thus no efforts are made to develop a test procedure that includes such a series impedance. JIS C 61 000-3-2 allows harmonics tests without the use of a line impedance network, hence the procedure in this Technical Report is applicable to this type of tests per JIS C 61 000-3-2. The procedure in this Technical Report is intended to be compatible with related standards, in particular any safety requirements set forth by listing organizations or measurement standards of the International Electrotechnical Commission (IEC). Such safety requirements specified by the IEC or other parties may be different than criteria defined in this report. Therefore, meeting the criteria defined herein should not be construed as a waiver of any other relevant performance or safety requirements. In general, the procedures and methodologies specified in ISO/IEC 1 7025 should be followed to verify that the test and verification signals, measurement procedures, external reference equipment and evaluation methods specified in this Technical Report, are produced with sufficient accuracy to meet the stated goal of evaluating the harmonics analyzer or analysis system. If the results of a test procedure on a given harmonic test system deviate from the expected results given in this Technical Report, the cause for the deviation needs to be identified, and the system needs to be corrected. This may require external equipment and/or calibration of individual system components.IEC 61000-4-37 pdf download.