IEC 60704-3:2006

Overview

IEC 60704-3:2006, published by the International Electrotechnical Commission (IEC), specifies procedures for determining and verifying declared values of airborne acoustical noise emitted by household and similar electrical appliances. This standard is a key part of the IEC 60704 series, which provides comprehensive test codes for measuring the noise characteristics of home appliances. The methods outlined apply to all appliance categories covered by IEC 60704-1 (General requirements) and relevant IEC 60704-2 parts (requirements for specific appliance types).

The purpose of IEC 60704-3:2006 is to ensure that declared noise emission values-those provided to consumers via labels, technical documentation, or advertising-are accurate and verifiable, supporting transparency and comparability in the marketplace.

Key Topics

• Scope of Application: The standard applies to mass-produced household and similar electrical appliances, manufactured according to the same technical specifications and characterized by the same declared noise emission values.
• Declaration of Noise Emission Values: Defines what constitutes a declared value-such as labeling, brochures, advertisements, or other technical information provided to consumers.
• Verification Procedure:
  • Introduces a practical, statistical method for verifying declared noise emission values.
  • Specifies that verification can be based on testing a sample of only three appliances from a batch (series or lot), making verification both practical and robust for manufacturers.
• Reference Standards: Must be implemented in conjunction with IEC 60704-1 and applicable IEC 60704-2 standards.
• Terminology: Establishes clear definitions for key terms such as sound power level, A-weighted sound power level, batch and sample sizes, arithmetic means, and standard deviations-all fundamental to noise measurement and statistical validation.

Applications

IEC 60704-3:2006 holds significant practical value for:

• Manufacturers: Enables reliable declaration of airborne acoustic noise levels for household appliances, building customer trust and supporting regulatory compliance and international trade.
• Testing Laboratories: Provides a standardized procedure for confirming the accuracy of manufacturers' declared noise emissions, promoting consistency and repeatability.
• Regulatory Bodies: Assists government and regulatory agencies in verifying market claims and monitoring compliance with environmental noise and consumer information regulations.
• Retailers and Consumers: Ensures that declared appliance noise emission values are both substantiated and comparable across brands and models, supporting informed purchasing decisions.

Practical examples of appliances covered include vacuum cleaners, dishwashers, washing machines, fans, electric shavers, ovens, and hair care devices, among others-as defined in the IEC 60704-2 series.

Related Standards

To properly implement IEC 60704-3:2006, reference should be made to the following related standards:

• IEC 60704-1: Household and similar electrical appliances – Test code for the determination of airborne acoustical noise – Part 1: General requirements.
• IEC 60704-2 (all parts): Specific requirements for different appliance categories, such as vacuum cleaners, washing machines, dishwashers, tumble dryers, fans, ovens, and others.
• ISO 3534-1: Statistics – Vocabulary and symbols – Part 1: Probability and general statistical terms.

IEC 60704-3:2006 is designed to be used alongside these documents for a complete and harmonized approach to appliance noise measurement and declaration. Following this standard builds consumer confidence and enhances the international comparability of product information, ultimately benefiting all stakeholders in the household appliance industry.