NBN EN 60664-4 : 2006

INTRODUCTION
1 Scope and object
2 Normative references
3 Terms and definitions
4 Clearances
  4.1 General conditions
  4.2 Basic information
  4.3 Homogeneous and approximately homogeneous fields
      4.3.1 Conditions for approximately homogeneous field
      4.3.2 Experimental data of breakdown characteristics
      4.3.3 Dimensioning of clearances for homogeneous and
            approximately homogeneous field conditions
  4.4 Inhomogeneous fields
      4.4.1 Conditions for inhomogeneous field
      4.4.2 Experimental data of partial discharge and
            breakdown characteristics
      4.4.3 Dimensioning of clearances for inhomogeneous
            field conditions
5 Creepage distances
  5.1 Experimental data
  5.2 Dimensioning of creepage distances
6 Solid insulation
  6.1 General consideration
  6.2 Influencing factors
  6.3 Dimensioning of solid insulation
7 High-frequency testing
  7.1 Basic requirements
  7.2 Test voltage source
  7.3 Conditioning
  7.4 High-frequency breakdown test
      7.4.1 Test method
      7.4.2 Test result
  7.5 High-frequency partial discharge test
      7.5.1 General considerations
      7.5.2 Test method
      7.5.3 Test equipment
      7.5.4 Test circuit
      7.5.5 Required bandwidth of the test circuit
      7.5.6 Dimensioning of the test circuit
  7.6 Examples of test results
8 Non sinusoidal voltages
  8.1 General considerations
  8.2 Periodic impulse voltage
  8.3 Harmonic analysis
  8.4 Dimensioning procedure and testing
Annex A (informative) Insulation characteristics of
                      clearances at high-frequency
                      voltages
  A.1 Basic information about the breakdown of clearances
  A.2 Experimental data
      A.2.1 Homogeneous and approximately homogeneous field
            distribution
      A.2.2 Inhomogeneous field distribution
Annex B (informative) Insulation characteristics of creepage
                      distances at high-frequency voltages
  B.1 Withstand characteristics of creepage distances
  B.2 Experimental conditions
  B.3 Experimental data
Annex C (informative) Insulation characteristics of solid
                      insulation at high-frequency voltages
  C.1 Degradation mechanism of solid insulation
  C.2 Experimental results
Annex D (normative) Testing of insulation at high-frequency
                    voltages
  D.1 Test voltage source
  D.2 High-frequency partial discharge test
      D.2.1 Test equipment
      D.2.2 Test circuit
  D.3 Examples of test results
Annex E (informative) Insulation stressed with non-sinusoidal
                      high-frequency voltages
  E.1 Objective
  E.2 Harmonic analysis
Annex F (informative) Dimensioning diagrams
Annex ZA (normative) Normative references to international
         publications with their corresponding European publications
Bibliography

Describes basic, supplementary and reinforced insulation subjected to high-frequency voltage stress within low-voltage equipment.