The combination of cement dust (conductive when wet – high NSDD) and salt spray (high ESDD) pushes the site into Level d – Very Heavy .
IEC 60815-2 is a part of the IEC 60815 series, which provides guidelines for the selection of current-limiting fuses. Specifically, this part of the standard deals with the selection of fuses for applications where the fault current is limited by the fuse itself. The standard provides recommendations for the proper selection of fuses to ensure safe and reliable operation of electrical systems. iec 60815-2 pdf
: It provides guidance on insulator shapes, such as shed spacing, shed overhang, and "creepage factor," which are critical for performance in rain or coastal salt spray. The combination of cement dust (conductive when wet
The standard builds on the general principles established in IEC 60815-1 and focuses on the following areas for glass and porcelain: Its primary goal is to ensure reliable service
The standard applies to suspension, tension, and post insulators used in outdoor substations and overhead lines. Its primary goal is to ensure reliable service under polluted conditions by balancing the specific creepage distance with the insulator's aerodynamic profile and diameter.