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Higher pollution classes demand a significantly larger USCD to interrupt the leakage current path. 3. Choose the Insulator Profile
To successfully implement IEC 60815-2 during substation or transmission line design, follow this sequence:
The primary goal of the specification is to give engineers a methodology to: iec 60815-2 pdf
Replaces older, less accurate methods (like the 1986 technical report) with updated data based on modern research and field experience. Summary of Scope and Application Description Standard IEC/TS 60815-2:2008 Scope Ceramic and Glass Insulators for a.c. systems Focus Selection & Dimensioning in Polluted Conditions Replaces IEC 60815:1986 (partial) Key Metric Site Pollution Severity (SPS) based on ESDD/NSDD
IEC 60815-2 is titled "Selection and dimensioning of high-voltage insulators intended for use in polluted conditions – Part 2: Ceramic and glass insulators for a.c. systems."
IEC 60815-2 is a standard published by the International Electrotechnical Commission (IEC) that provides guidelines for the selection of surge arresters for power systems. Specifically, this part of the standard deals with surge arresters for power systems with voltages above 1 kV. This public link is valid for 7 days
Coastal areas with heavy sea spray, or zones with intense industrial smog.
: Explain the transition from "creepage distance" to "USCD" based on the Emcap E sub m (mean surface electric field).
IEC 60815-2 provides a baseline minimum USCD required for each pollution class to prevent a power-frequency flashover: Pollution Description Minimum Baseline USCD (mm/kV) Very Light B C D E Very Heavy Insulator Profile Correction Factors Can’t copy the link right now
IEC 60815-2 is a technical standard providing guidelines for the selection and dimensioning of high-voltage ceramic and glass insulators in polluted environments, focusing on Unified Specific Creepage Distance (USCD) to prevent flashovers. The standard helps engineers classify pollution levels and select insulator profiles for specific environmental conditions like salt or industrial dust. Access the official standard at the IEC Webstore IEC/TS 60815-2 - iTeh Standards
The standard forces you to consider . Instead of guessing, you categorize your pollution into 5 distinct classes (a to e):
While Part 1 establishes the general principles and definitions for assessing pollution levels, .
Before diving into the selection procedure, it is helpful to understand several key terms that appear throughout IEC 60815‑2.
You cannot simply use the baseline USCD value. Glass and ceramic insulators come in various profiles (e.g., standard, anti-fog, aerodynamic). IEC 60815-2 forces engineers to apply correction factors based on the specific shape parameters of the chosen shed. Key Geometric Profiles Evaluated: Shed Spacing (