1. General and definitions
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
2. Basis for insulation coordination
2.1 Basic principles
2.2 Voltages and voltage ratings
2.3 Frequency
2.4 Duration of voltage application
2.5 Pollution
2.6 Information supplied with the relay
2.7 Insulating materials
3. Requirements and dimensioning rules
3.1 Dimensioning of clearances
3.2 Dimensioning of creepage distances
3.3 Requirements for dimensioning of solid insulating
materials
3.4 Distances for end of coils
4. Tests and measurements
4.1 Tests
4.2 Measurement of creepage distances and clearances
Annex A (informative) Examples for dimensioning of creepage
distances