60815-2 Pdf [verified] | Iec

IEC/TS 60815-2

is the international technical specification that provides definitive guidelines for selecting and dimensioning ceramic and glass insulators for high-voltage AC systems operating in polluted environments . This standard is a critical companion to IEC TS 60815-1 , which establishes the general principles of pollution management for the entire series. Scope and Application of IEC 60815-2

  • IEC 60815-1: Covers Polymeric (composite) insulators.
  • Key Difference: Polymeric insulators utilize hydrophobicity (water repellency) to combat pollution. Therefore, they generally require less creepage distance than ceramic/glass insulators for the same pollution level. IEC 60815-2 does not account for hydrophobicity transfer; it assumes a hydrophilic (wettable) surface typical of glass and porcelain.

Pollution Severity Classes:

The standard refers to five classes (from very light to very heavy) to categorize environments like coastal, industrial, or desert areas. Sizing and Correction Factors iec 60815-2 pdf

IEC 60815-2 PDF Download

Unified Specific Creepage Distance (USCD)

In high-voltage engineering, pollution is a primary cause of insulator flashover, which can lead to catastrophic grid failures. When salt, dust, or industrial particulates accumulate on an insulator surface and become moist (due to fog or light rain), they form a conductive layer. IEC 60815-2 provides the methodology to determine the "Site Pollution Severity" (SPS) and subsequently choose an insulator design—specifically its —that can withstand these environmental stresses. Key Components of the Standard IEC 60815-1: Covers Polymeric (composite) insulators

  • Outdated drafts (not the final 2008 version)
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1. Normative References

Insulator Profiles

: The standard analyzes how different shapes (e.g., standard, anti-fog, or open profiles) perform under various types of pollution like salt spray or industrial dust. Pollution Severity Classes: The standard refers to five