IEC 61000-4-12:2017 is also available as \/2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. IEC 61000-4-12:2017 relates to the immunity requirements and test methods for electrical and electronic equipment, under operational conditions, to ring waves occurring in low-voltage power, control and signal lines supplied by public and non-public networks. The object of this document is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to ring waves. The test method documented in this part of IEC 61000 describes a consistent method to assess the immunity of an equipment or system against a defined phenomenon. It has the status of a basic EMC publication in accordance with IEC Guide 107. This edition includes the following significant technical changes with respect to the previous edition: a) addition of a mathematical modelling of ring wave waveform; b) new Annex B on selection of generators and test levels; c) new Annex C on explanatory notes; d) new Annex D on measurement uncertainty; e) addition of high speed CDN; f) addition of a calibration procedure for CDN.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 68<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 73<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 76<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 78<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 79<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 81<\/td>\n | 3.2 Abbreviated terms 4 General 4.1 Description of the phenomenon <\/td>\n<\/tr>\n | ||||||
| 83<\/td>\n | 4.2 Relevant parameters 4.2.1 Repetition rate 4.2.2 Phase angle Figures Figure 1 \u2013 Waveform of the ring wave (open-circuit voltage and short-circuit current) <\/td>\n<\/tr>\n | ||||||
| 84<\/td>\n | 5 Test levels 6 Test instrumentation 6.1 Ring wave generator 6.1.1 Ring wave generator circuit Tables Table 1 \u2013 Test levels <\/td>\n<\/tr>\n | ||||||
| 85<\/td>\n | 6.1.2 Impedance values 6.1.3 Performance characteristics of the ring wave generator Figure 2 \u2013 Example of schematic circuit of the ring wave generator <\/td>\n<\/tr>\n | ||||||
| 86<\/td>\n | 6.1.4 Calibration of the ring wave generator 6.2 Coupling\/decoupling networks 6.2.1 General Table 2 \u2013 Relationship between peak open-circuit voltage and peak short-circuit current <\/td>\n<\/tr>\n | ||||||
| 87<\/td>\n | 6.2.2 Coupling\/decoupling networks for AC\/DC power port rated up to 63 A per line Figure 3 \u2013 Selection of coupling\/decoupling method <\/td>\n<\/tr>\n | ||||||
| 88<\/td>\n | Figure 4 \u2013 Example of coupling network and decoupling network for capacitive coupling on AC\/DC lines: line-to-line coupling Table 3 \u2013 Ring wave specification at the EUT power portof the CDN <\/td>\n<\/tr>\n | ||||||
| 89<\/td>\n | Figure 5 \u2013 Example of coupling network and decoupling network for capacitive coupling on AC\/DC lines: line-to-ground coupling Figure 6 \u2013 Example of coupling network and decoupling network for capacitive coupling on AC lines (three phases): line L3-to-line L2 coupling <\/td>\n<\/tr>\n | ||||||
| 90<\/td>\n | 6.2.3 Coupling\/decoupling networks for interconnection lines Figure 7 \u2013 Example of coupling network and decoupling network for capacitive coupling on AC lines (three phases):line L3-to-ground coupling <\/td>\n<\/tr>\n | ||||||
| 91<\/td>\n | Figure 8 \u2013 Example of coupling network and decoupling network for unshielded unsymmetrical interconnection lines: line-to-line and line-to-ground coupling <\/td>\n<\/tr>\n | ||||||
| 92<\/td>\n | Figure 9 \u2013 Example of coupling and decoupling network for unshielded symmetrical interconnection lines: lines-to-ground coupling <\/td>\n<\/tr>\n | ||||||
| 93<\/td>\n | 6.3 Calibration of coupling\/decoupling networks 6.3.1 General 6.3.2 Calibration of CDNs for AC\/DC power port rated up to 63\u00a0A per line Figure 10 \u2013 Example of coupling and decoupling network for unshielded symmetrical interconnection lines: lines-to-ground coupling via capacitors <\/td>\n<\/tr>\n | ||||||
| 94<\/td>\n | 6.3.3 Calibration of CDNs for interconnection lines <\/td>\n<\/tr>\n | ||||||
| 95<\/td>\n | Table 4 \u2013 Summary of calibration process for CDNs for unsymmetrical interconnection lines <\/td>\n<\/tr>\n | ||||||
| 96<\/td>\n | Table 5 \u2013 Ring wave waveform specifications at the EUT port of the CDN for unsymmetrical interconnection lines <\/td>\n<\/tr>\n | ||||||
| 97<\/td>\n | 7 Test setup 7.1 Test equipment Table 6 \u2013 Summary of calibration process for CDNs for symmetrical interconnection lines Table 7 \u2013 Ring wave waveform specifications at the EUT port of the CDN for symmetrical interconnection lines <\/td>\n<\/tr>\n | ||||||
| 98<\/td>\n | 7.2 Verification of the test instrumentation 7.3 Test setup for ring waves applied to EUT power ports <\/td>\n<\/tr>\n | ||||||
| 99<\/td>\n | 7.4 Test setup for ring waves applied to unshielded unsymmetrical interconnection lines 7.5 Test setup for ring waves applied to unshielded symmetrical interconnectionlines 7.6 Test setup for ring waves applied to shielded lines <\/td>\n<\/tr>\n | ||||||
| 100<\/td>\n | 7.7 Protective earth connection Figure 11 \u2013 Example of test setup for ring waves applied to shielded lines <\/td>\n<\/tr>\n | ||||||
| 101<\/td>\n | 8 Test procedure 8.1 General 8.2 Laboratory reference conditions 8.2.1 Climatic conditions 8.2.2 Electromagnetic conditions 8.3 Execution of the test <\/td>\n<\/tr>\n | ||||||
| 102<\/td>\n | 9 Evaluation of test results <\/td>\n<\/tr>\n | ||||||
| 103<\/td>\n | 10 Test report <\/td>\n<\/tr>\n | ||||||
| 104<\/td>\n | Annexes Annex A (informative) Information on electromagnetic environments, installation classes and test levels <\/td>\n<\/tr>\n | ||||||
| 106<\/td>\n | Annex B (informative) Selection of generators and test levels B.1 General B.2 The classification of environments B.3 The definition of port types <\/td>\n<\/tr>\n | ||||||
| 107<\/td>\n | B.4 Selection of the test levels Table B.1 \u2013 Power ports: Selection of the test levels (depending on the installation class) <\/td>\n<\/tr>\n | ||||||
| 108<\/td>\n | Table B.2 \u2013 Circuits\/lines: Selection of the test levels (depending on the installation class) <\/td>\n<\/tr>\n | ||||||
| 109<\/td>\n | Annex C (informative) Explanatory notes C.1 Different source impedance C.2 Application of the tests C.2.1 Equipment level immunity C.2.2 System level immunity <\/td>\n<\/tr>\n | ||||||
| 110<\/td>\n | Annex D (informative) Measurement uncertainty (MU) considerations D.1 General D.2 Legend for ring wave parameters <\/td>\n<\/tr>\n | ||||||
| 111<\/td>\n | D.3 Uncertainty contributors to the ring wave measurement uncertainty D.4 Uncertainty of the generator output voltage and current measurement D.4.1 General D.4.2 Rise time of the ring wave <\/td>\n<\/tr>\n | ||||||
| 112<\/td>\n | Table D.1 \u2013 Example of uncertainty budget for ring wave rise time (T1) <\/td>\n<\/tr>\n | ||||||
| 113<\/td>\n | D.4.3 Peak of the ring wave Table D.2 \u2013 Example of uncertainty budget for the peak of the short-circuit current of the ring wave (IPk1) <\/td>\n<\/tr>\n | ||||||
| 114<\/td>\n | D.4.4 Further MU contributions to time measurements D.4.5 Rise time of the step response and bandwidth of the frequency response of the measuring system <\/td>\n<\/tr>\n | ||||||
| 115<\/td>\n | D.4.6 Impulse peak and width distortion due to the limited bandwidth of the measuring system Table D.3 \u2013 \u03b1 factor (Formula (D.3)) of different unidirectional impulse responses corresponding to the same bandwidth of the system B <\/td>\n<\/tr>\n | ||||||
| 116<\/td>\n | D.5 Application of uncertainties in the ring waveform compliance criterion <\/td>\n<\/tr>\n | ||||||
| 117<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Tracked Changes. Electromagnetic Compatibility (EMC) – Testing and measurement techniques. Ring wave immunity test<\/b><\/p>\n |