IEC GUIDE 115:2023 PDF

Overview

IEC GUIDE 115:2023 provides a practical framework for applying measurement uncertainty to conformity assessment activities in the electrotechnical sector. Developed by the International Electrotechnical Commission (IEC) and specifically tailored for the IECEE Schemes, this guide aids testing laboratories by clarifying how uncertainty of measurement impacts the testing and certification of electrical products against national and international safety standards.

The guide aligns with the requirements of ISO/IEC 17025:2017, focusing on enhancing the repeatability and reproducibility of electrical safety test results. It addresses the need for transparent, consistent, and reliable reporting of conformity assessment - essential for ensuring international acceptance of test reports within over 40 countries participating in the IECEE CB Scheme.

Key Topics

• Measurement Uncertainty Principles Explains fundamental concepts relating to measurement uncertainty, helping laboratories apply established evaluation procedures consistently during electrical product testing.

• Practical Uncertainty Calculation Guidance Offers detailed instructions for calculating measurement uncertainty, including both Type A (statistical) and Type B (non-statistical) evaluations, ensuring technical personnel can assess and quantify the uncertainty inherent in test measurements.

• Decision Rules and Simple Acceptance Introduces decision rules and the concept of simple acceptance based on uncertainty to support conformity judgments - a crucial element for determining if an electrical product meets safety requirements despite measurement variability.

• Examples for Product Testing Contains practical examples of uncertainty budgets related to common electrical safety tests such as temperature rise, leakage current, input power, and torque measurement. These examples illustrate how to systematically approach uncertainty estimation in different testing scenarios.

• Statements of Conformity Reporting Provides guidance on how to incorporate uncertainty into conformity statements, thereby improving the clarity and reliability of test reports issued by laboratories.

Applications

IEC GUIDE 115:2023 is widely applicable to:

• Testing Laboratories engaged in electrical product testing for national and international safety compliance.
• Certification Bodies participating in the IECEE CB Scheme or other national conformity assessment frameworks, facilitating mutual recognition of test results and certifications.
• IEC Technical Committees developing standards that incorporate measurement uncertainty principles to harmonize test methodologies globally.
• Manufacturers and Importers seeking to understand the impact of measurement uncertainty on conformity assessments to improve product compliance strategies.

By standardizing the approach towards measurement uncertainty, laboratories and certification bodies can confidently assess product compliance, minimize the risk of false acceptances or rejections, and promote international market access for electrical products.

Related Standards

• ISO/IEC 17025:2017 – General requirements for the competence of testing and calibration laboratories. IEC GUIDE 115 directly supports its implementation in electrical safety testing.
• IEC Standards for Electrical Safety – The guide complements various IEC technical standards covering electrical product safety testing methods, ensuring uncertainty is appropriately managed during conformity assessments.
• ISO/IEC Guide 99:2007 (GUM) – Provides the foundational concepts for the expression of uncertainty in measurement, which IEC GUIDE 115 adapts specifically to the electrotechnical sector.

IEC GUIDE 115:2023 is essential for stakeholders involved in electrical safety conformity assessment, providing best practices for calculating, applying, and reporting measurement uncertainty. Its practical approach enhances global confidence in test results and supports harmonized international acceptance across electrical product markets.