IEC 60815 Pollution Guide
Determine the Site Pollution Severity (SPS) and Minimum Creepage Distance for your high-voltage grid.
CLASSIFICATION RESULT
Class I (Light)
Min. Creepage: 16 mm/kV
Standard SPS Classes
| Class I (Light) | 16 mm/kV |
| Class II (Medium) | 20 mm/kV |
| Class III (Heavy) | 25 mm/kV |
| Class IV (Very Heavy) | 31 mm/kV |
Insulator Selection Guide
Operating in Class III or Class IV zones? Standard insulator profiles are highly susceptible to flashovers due to salt fog and conductive dust buildup.
The Solution: Specify Aerodynamic/Fog-type porcelain profiles or inherently hydrophobic HTV Silicone Rubber.
Explore Anti-Pollution Insulators ➔