I.S. EN 60664-4:2006

FOREWORD
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
  4.4 Inhomogeneous fields
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
  7.5 High-frequency partial discharge test
  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
Annex B (informative) Insulation characteristics of creepage
        distances at high-frequency voltages
Annex C (informative) Insulation characteristics of solid insulation
        at high-frequency voltages
Annex D (normative) Testing of insulation at high-frequency voltages
Annex E (informative) Insulation stressed with non-sinusoidal
        high-frequency voltages
Annex F (informative) Dimensioning diagrams
Bibliography

Describes basic, supplementary and reinforced insulation subjected to high-frequency voltage stress within low-voltage equipment. The dimensioning values directly apply for basic insulation; for reinforced insulation additional requirements apply according to Part 1. It is applicable for the dimensioning of clearances, creepage distances and solid insulation stressed by any type of periodic voltages with a fundamental frequency above 30 kHz and up to 10 MHz.