Part 2 is for ceramic/glass only. For polymeric (silicone, EPDM) insulators, you must use IEC 60815-3 . Polymeric materials have hydrophobicity, which temporarily reduces pollution severity, allowing lower creepage.
: The minimum leakage distance required per kV of system voltage (e.g., 53.7 mm/kV for Very Heavy pollution). iec 60815-2 pdf
IEC 60815-2 is more than a technical manual; it is a foundational document for modern electrical infrastructure. By bridging the gap between environmental science and electrical engineering, it ensures that porcelain and glass insulators—the silent guardians of our power lines—remain resilient against the unpredictable challenges of the natural world. AI responses may include mistakes. Learn more Part 2 is for ceramic/glass only
Do not rely on outdated rules of thumb or unauthorized copies. Purchase the official from the IEC Webstore or your national body. Then, integrate its tables and formulas into your design workflow. Whether you are protecting a 33 kV distribution line or a 765 kV backbone, this standard is your ultimate guide to preventing the next costly flashover. : The minimum leakage distance required per kV