BS EN 61000-4-9:2016:2017 Edition
$198.66
Electromagnetic compatibility (EMC) – Testing and measurement techniques. Impulse magnetic field immunity test
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 60 |
This part of IEC 61000 specifies the immunity requirements, test methods, and range of recommended test levels for equipment subjected to impulse magnetic disturbances mainly encountered in:
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industrial installations,
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power plants,
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railway installations,
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medium voltage and high voltage sub-stations.
The applicability of this standard to equipment installed in different locations is determined by the presence of the phenomenon, as specified in Clause 4.
This standard does not consider disturbances due to capacitive or inductive coupling in cables or other parts of the field installation. Other IEC standards dealing with conducted disturbances cover these aspects.
The object of this standard is to establish a common reference for evaluating the immunity of electrical and electronic equipment when subjected to impulse magnetic fields. 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.
NOTE As described in IEC Guide 107, this is a basic EMC publication for use by product committees of the IEC. As also stated in Guide 107, the IEC product committees are responsible for determining whether this immunity test standard is applied or not, and if applied, they are responsible for determining the appropriate test levels and performance criteria. TC 77 and its sub-committees are prepared to co-operate with product committees in the evaluation of the value of particular immunity test levels for their products.
This standard defines:
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a range of test levels;
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test equipment;
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test setups;
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test procedures.
The task of the described laboratory test is to find the reaction of the equipment under test (EUT) under specified operational conditions to impulse magnetic fields caused by switching and lightning effects.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | English CONTENTS |
| 9 | FOREWORD |
| 11 | INTRODUCTION |
| 12 | 1 Scope and object 2 Normative references |
| 13 | 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions |
| 14 | 3.2 Abbreviated terms |
| 15 | 4 General 5 Test levels Tables Table 1 – Test levels |
| 16 | 6 Test instrumentation 6.1 General 6.2 Combination wave generator 6.2.1 General Figures Figure 1 – Simplified circuit diagram of the combination wave generator |
| 17 | 6.2.2 Performance characteristics of the generator 6.2.3 Calibration of the generator Figure 2 – Waveform of short-circuit current (8/20 μs) at the output of the generator with the 18 μF capacitor in series Table 2 – Definitions of the waveform parameters 8/20 μs |
| 18 | 6.3 Induction coil 6.3.1 Field distribution 6.3.2 Characteristics of the standard induction coils of 1 m × 1 m and 1 m × 2,6 m 6.4 Calibration of the test system Figure 3 – Example of a current measurement of standard induction coils |
| 19 | 7 Test setup 7.1 Test equipment Table 3 – Specifications of the waveform time parameters of the test system Table 4 – Specifications of the waveform peak current of the test system |
| 20 | 7.2 Verification of the test instrumentation 7.3 Test setup for impulse magnetic field applied to a table-top EUT |
| 21 | 7.4 Test setup for impulse magnetic field applied to a floor standing EUT Figure 4 – Example of test setup for table-top equipment showing the vertical orthogonal plane Figure 5 – Example of test setup for floor standing equipment showing the horizontal orthogonal plane |
| 22 | 7.5 Test setup for impulse magnetic field applied in-situ Figure 6 – Example of test setup for floor standing equipment showing the vertical orthogonal plane Figure 7 – Example of test setup using the proximity method |
| 23 | 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 |
| 24 | 9 Evaluation of test results 10 Test report |
| 26 | Annexes Annex A (informative) Characteristics of non standard induction coils A.1 General A.2 Determination of the coil factor A.2.1 General A.2.2 Coil factor measurement |
| 27 | A.2.3 Coil factor calculation A.3 Magnetic field measurement Figure A.1 – Rectangular induction coil with sides a + b and c |
| 28 | A.4 Verification of non standard induction coils Figure A.2 – Example of verification setup for non standard induction coils |
| 29 | Annex B (informative) Information on the field distribution of standard induction coils B.1 General B.2 1 m × 1 m induction coil Figure B.1 – +3 dB isoline for the magnetic field strength (magnitude) in the x-y plane for the 1 m × 1 m induction coil |
| 30 | B.3 1 m × 2,6 m induction coil with reference ground plane Figure B.2 – +3 dB and –3 dB isolines for the magnetic field strength (magnitude) in the x-z plane for the 1 m × 1 m induction coil |
| 31 | Figure B.3 – +3 dB isoline for the magnetic field strength (magnitude) in the x-z plane for the 1 m × 2,6 m induction coil with reference ground plane Figure B.4 – +3 dB and -3 dB isolines for the magnetic field strength (magnitude) in the x-y plane for the 1 m × 2,6 m induction coil with reference ground plane |
| 32 | B.4 1 m × 2,6 m induction coil without reference ground plane Figure B.5 – +3 dB isoline for the magnetic field strength (magnitude) in the x-y plane for the 1 m × 2,6 m induction coil without reference ground plane Figure B.6 – +3 dB and –3 dB isolines for the magnetic field strength (magnitude) in the x-z plane for the 1 m × 2,6 m induction coil without reference ground plane |
| 33 | Annex C (informative) Selection of the test levels |
| 35 | Annex D (informative) Measurement uncertainty (MU) considerations D.1 General D.2 Legend |
| 36 | D.3 Uncertainty contributors to the surge current and to the surge magnetic field measurement uncertainty D.4 Uncertainty of surge current and surge magnetic field calibration D.4.1 General D.4.2 Front time of the surge current |
| 37 | Table D.1 – Example of uncertainty budget for surge current front time (Tf) |
| 38 | D.4.3 Peak of the surge current and magnetic field Table D.2 – Example of uncertainty budget for the peak of surge current (IP) |
| 39 | D.4.4 Duration of the current impulse Table D.3 – Example of uncertainty budget for current impulse width (Td) |
| 40 | D.4.5 Further MU contributions to time measurements D.4.6 Rise time distortion due to the limited bandwidth of the measuring system |
| 41 | D.4.7 Impulse peak and width distortion due to the limited bandwidth of the measuring system Table D.4 – factor (see equation (D.10)) of different unidirectional impulse responses corresponding to the same bandwidth of system B |
| 42 | D.5 Application of uncertainties in the surge generator compliance criterion Table D.5 – β factor (equation (D.14)) of the standard current surge waveform |
| 43 | Annex E (informative) Mathematical modelling of surge current waveforms E.1 General E.2 Normalized time domain current surge (8/20 μs) |
| 44 | Figure E.1 – Normalized current surge (8/20 μs): Width time response Tw Figure E.2 – Normalized current surge (8/20 μs): Rise time response Tr |
| 45 | Figure E.3 – Current surge (8/20 μs): Spectral response with Δf = 10 kHz |
| 46 | Annex F (informative) Characteristics using two standard induction coils F.1 General F.2 Particular requirements for calibration Figure F.1 – Example of a test system using double standard induction coils |
| 47 | F.3 Field distribution of the double induction coil arrangement Table F.1 – Specifications of the waveform peak current of this test system |
| 48 | Figure F.2 – +3dB isoline for the magnetic field strength (magnitude) in the x-y plane for the double induction coil arrangement (0,8 m spaced) Figure F.3 – +3 dB and –3 dB isolines for the magnetic field strength (magnitude) in the x-z plane for the double induction coil arrangement (0,8 m spaced) |
| 49 | Annex G (informative) 3D numerical simulations G.1 General G.2 Simulations G.3 Comments |
| 50 | Figure G.1 – Current and H-field in the centre of the 1 m × 1 m induction coil Figure G.2 – Hx-field along the side of 1 m × 1 m induction coil in A/m |
| 51 | Figure G.3 – Hx-field in direction x perpendicular to the plane of the 1 m × 1 m induction coil Figure G.4 – Hx-field along the side in dB for the 1 m × 1 m induction coil |
| 52 | Figure G.5 – Hx-field along the diagonal in dB for the 1 m × 1 m induction coil Figure G.6 – Hx-field plot on y-z plane for the 1 m × 1 m induction coil |
| 53 | Figure G.7 – Hx-field plot on x-y plane for the 1 m × 1 m induction coil Figure G.8 – Hx-field along the vertical middle line in dB for the 1 m × 2,6 m induction coil |
| 54 | Figure G.9 – Hx-field 2D plot on y-z plane for the 1 m × 2,6 m induction coil Figure G.10 – Hx-field 2D plot on x-y plane at z = 0,5 m for the 1 m × 2,6 m induction coil |
| 55 | Figure G.11 – Helmholtz setup: Hx-field and 2D plot for two 1 m × 1 m induction coils, 0,6 m spaced |
| 56 | Figure G.12 – Helmholtz setup: Hx-field and 2D plot for two 1 m × 1 m induction coils, 0,8 m spaced |
| 57 | Bibliography |
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