SN EN 61000-4-28 : 2000

INTRODUCTION
1 Scope
2 Normative references
3 General
4 Definitions
5 Test levels
6 Test equipment
      6.1 Test generators: characteristics and
             performances
      6.2 Verification of the characteristics
7 Test set-up
8 Test procedure
      8.1 Laboratory reference conditions
      8.2 Execution of the test
9 Test results and test report
Annex A (informative) Sources and effects of variation of
                      the power frequency
Annex B (informative) Electromagnetic environmental classes
Annex ZA (normative) Normative references to international
                     publications with their corresponding
                     European publications
Figure 1 - Frequency variation sequence
Figure 2 - Example of transitional period tp
Figure 3 - Schema of test instrumentation with power
           amplifier

A basic EMC (electromagnetic compatibility) publication, which considers immunity tests for electronic and electric equipment in its electromagnetic environment. Considers only conducted phenomena, including immunity tests for equipment connected to industrial and public networks. The objective is to establish a reference to evaluate the immunity of electronic and electric equipment when subjected to power frequency variations. Applicable to electronic/electric equipment connected to a 50 Hz or 60 Hz distributed network with rated line current up to 16 A per phase, and does not cover electronic/electric equipment that is connected to a.c. 400 Hz distribution networks.