. It provides specific guidance for choosing and sizing ceramic (porcelain) and glass insulators used in outdoor high-voltage AC systems exposed to environmental contamination. Core Content and Scope

Before diving into Part 2, it is critical to understand the structure of the series. The IEC 60815 family replaces the older, less flexible standard IEC 60815 (1986). The new approach is divided into four parts:

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."

Before using the standard, it is vital to understand its core principles:

The IEC 60815-2 standard covers various aspects of current-limiting fuse selection, including:

Properly dimensioned insulators require less frequent manual cleaning. Enhance Grid Reliability:

Here are the best resources and technical papers related to IEC 60815-2: 1. The Official IEC Standard

The standard is structured to guide engineers through a systematic approach to insulator design. 1. Definition of Pollution Classes (SPS)

The importance of IEC 60815-2 lies in its ability to ensure the safe and reliable operation of electrical systems. Current-limiting fuses play a critical role in protecting electrical equipment and preventing damage to systems during fault conditions. By providing a standardized approach to selecting these fuses, IEC 60815-2 helps manufacturers, designers, and users ensure that their electrical systems are protected against overcurrent and fault conditions.

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

For those interested in accessing the IEC 60815-2 standard, it is available in PDF format from various sources, including:

Do not risk using a bootleg copy for a live transmission line design. Insurance and regulatory authorities will demand proof of use of the correct standard.