AS/NZS 61000.4.8:2002

1 - AS/NZS 61000.4.8:2002 ELECTROMAGNETIC COMPATIBILITY (EMC) - TESTING AND MEASUREMENT TECHNIQUES-POWER FREQUENCY MAGNETIC...
4 - PREFACE
5 - CONTENTS
7 - 1 Scope
8 - 2 Normative references
8 - 3 General
8 - 4 Definitions
8 - 4.1 EUT
9 - 4.2 induction coil
9 - 4.3 induction coil factor
9 - 4.4 immersion method
9 - 4.5 proximity method
9 - 4.6 ground (reference) plane (GRP)
9 - 4.7 decoupling network, back filter
9 - 5 Test levels
10 - 6 Test equipment
10 - 6.1 Test generator
11 - 6.1.1 Characteristics and performances of the test generator
11 - 6.1.2 Verification of the characteristics of the test generator
11 - 6.2 Induction coil
11 - 6.2.1 Characteristics of the induction coil
12 - 6.2.2 Calibration of the induction coil, coil factor
13 - 6.3 Test and auxiliary instrumentation
13 - 6.3.1 Test instrumentation
13 - 6.3.2 Auxiliary instrumentation
13 - 7 Test set-up
13 - 7.1 Ground (reference) plane
14 - 7.2 Equipment under test
14 - 7.3 Test generator
14 - 7.4 Induction coil
15 - 8 Test procedure
15 - 8.1 Laboratory reference conditions
15 - 8.1.1 Climatic conditions
15 - 8.1.2 Electromagnetic conditions
15 - 8.2 Carrying out the test
16 - 9 Evaluation of test results
17 - 10 Test report
21 - Annex A - Induction coil calibration method
21 - A.1 Magnetic field measurement
21 - A.2 Calibration of the induction coil
22 - Annex B - Characteristics of the induction coils
22 - B.1 General
22 - B.2 Induction coil requirements
22 - B.3 Induction coil characteristics
23 - B.4 Summary of characteristics of induction coils
28 - Annex C - Selection of the test levels
30 - Annex D - Information on power frequency magnetic field strength

To determine the immunity requirements of equipment, only under operational conditions, to magnetic disturbances at power frequency related to residential and commercial locations, industrial installations and power plants and medium voltage and high voltage sub-stations. This Standard is identical with and has been reproduced from IEC 61000-4-8:2001.

This international standard relates to the immunity requirements of equipment, only under operational conditions, to magnetic disturbances at power frequency related to: – residential and commercial locations;– industrial installations and power plants;– 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 3. 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 and reproducible basis for evaluating the performance of electrical and electronic equipment for household, commercial and industrial applications when subjected to magnetic fields at power frequency (continuous and short duration field). The standard defines: – recommended test levels;– test equipment;– test set-up;– test procedure. Other kinds of magnetic fields would be object of standardization: – fields at other power frequencies (16 2/3 – 20 or 30 – 400 Hz);– fields of harmonic currents (100 Hz to 2 000 Hz); – fields of higher frequencies (up to 150 kHz, e.g. for mains signalling systems); – D.C. fields.

First published as AS/NZS 61000.4.8:2002.