SN EN 61000-4-8 : 1993 AMD 1 2001

Cooperating organizations
National foreword
Foreword
1. Scope
2. Normative references
3. General
4. Definitions
4.1 EUT
4.2 Induction coil
4.3 Induction coil factor
4.4 Immersion method
4.5 Proximity method
4.6 Ground (reference) plant
4.7 Decoupling network, back filter
5. Test levels
6. Test equipment
6.1 Test generator
6.2 Induction coil
6.3 Test and auxiliary instrumentation
7. Test set-up
7.1 Ground (reference) plane
7.2 Equipment under test
7.3 Test generator
7.4 Induction coil
8. Test procedure
8.1 Laboratory reference conditions
8.2 Carrying out the test
9. Test results and test report
Figures
1. Example of application of the test field by the
     immersion method
2. Schematic circuit of the test generator for power
     frequency magnetic field
3. Example of test set-up for table-top equipment
4. Example of test set-up for floor-standing equipment
5. Example of investigation of susceptibility to
     magnetic field by the proximity method
6. Illustration of Helmholtz coils
B.1 Characteristics of the field generated by a square
     induction coil (1 m side) in its plane
B.2 3 dB area of the field generated by a square
     induction coil (1 m side) in its plane
B.3 3 dB area of the field generated by a square
     induction coil (1 m side) in the mean orthogonal
     plane (component orthogonal to the plane of the coil)
B.4 3 dB area of the field generated by two square
     induction coils (1 m side) 0,6 m spaced, in the
     mean orthogonal plane (component orthogonal to the
     plane of the coils)
B.5 3 dB area of the field generated by two square
     induction coils (1 m side) 0,8 m spaced, in the
     mean orthogonal plane (component orthogonal to the
     plane of the coils)
B.6 3 dB area of the field generated by a rectangular
     induction coil (1 m x 2,6 m) in its plane
B.7 3 dB area of the field generated by a rectangular
     induction coil (1 m x 2,6 m) in its plane (ground
     plane as a side of the induction coil)
B.8 3 dB area of the field generated by a rectangular
     induction coil (1 m x 2,6 m) with ground plane, in
     the mean orthogonal plane (component orthogonal to
     the plane of the coil)
Annexes
A. Induction coil calibration method
B. Characteristics of the induction coils
C. Selection of the test levels
D. Information on power frequency magnetic field strength
ZA. (normative) Other international publications quoted
     in this standard with the references of the relevant
     European publications
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references
National annex NC (informative) Additional cross-references

Establishes a common and reproducible basis for evaluating the performance of electrical and electronic equipment for household, industrial and commercial applications when subjected to magnetic fields at power frequency. Does not consider disturbances due to capacitive or inductive coupling in cables or other parts of the field installation. Gives detailed definitions, diagrams and annexes.