IEC 60060-1 is the foundational international standard for high-voltage test techniques

The IEC 60060-1:2025 (Fourth Edition) standard establishes updated international procedures for high-voltage dielectric tests, including lightning and switching impulses for equipment above 1.0 kV AC or 1.5 kV DC. Key revisions introduced in 2025 include expanded tolerances for lightning impulses on high-voltage equipment and standardized procedures in Annex C for manual wave evaluation. The official, current publication is available at IEC Webstore . IEC 60060-1:2025 - Singapore Standards

The 2025 edition introduces several that affect test procedures and tolerances.

Adherence to IEC 60060-1 is vital for manufacturers and utilities to prevent equipment failure and ensure grid reliability:

Typically performed at power frequency (50/60 Hz) for 60 seconds to verify insulation integrity .

, which replaces the widely used 2010 version with technical revisions to improve clarity and accommodate ultra-high voltage (UHV) testing. iTeh Standards 1. Key Test Types Covered

: Introduced a front-time definition for switching impulses similar to lightning impulses, standardizing it to Waveform Calculation : A new informative

High-voltage testing leaves no room for guesswork. Invest in the standard, apply it correctly, and document rigorously. Your equipment—and your career—will thank you.

, specifically covering general definitions and test requirements. Its primary purpose is to unify high-voltage testing procedures globally to ensure the reliability and safety of electrical equipment operating above 1 kV. Overview of Key Versions

) and adjusted precipitation requirements. It is available for download on the IEC Webstore IEC 60060-1:2010 (Edition 3):

The document outlines fundamental concepts and rigorous technical criteria for generating and measuring test voltages:

The standard provides procedures and requirements for four primary types of dielectric tests: iTeh Standards Direct Voltage (DC) Tests

If you work internationally, you need IEC 60060-1 PDF. If only in North America, IEEE Std 4 may suffice—but many global contracts mandate IEC.