Iec 60815-2 Pdf Access

| Pollution Level | Typical Environments | Reference $L_ref$ (mm/kV) | | :--- | :--- | :--- | | | Desert areas, low industrial activity | 16.0 | | b) Light | Rural areas, minimal industrial influence | 20.0 | | c) Medium | Industrial suburbs, coastal areas with moderate sea spray | 25.0 | | d) Heavy | Heavy industrial zones, dense chemical pollution | 31.0 | | e) Very Heavy | Desert dust storms, direct salt spray | 40.0 |

Ratio of total creepage to the straight-line air gap. iec 60815-2 pdf

The document defines five distinct SPS classes, mapping them directly to a : Pollution Level Minimum RUSCD ( phase-to-ground) Typical Environment A Very Light Agricultural areas with low housing density B Areas far from the sea; low density of industrial emissions C Urbanized zones with average industrial activities D | Pollution Level | Typical Environments | Reference