Overview - IEC 60704-2-1:2020 (dry vacuum cleaners, airborne acoustical noise)
IEC 60704-2-1:2020 is the International Electrotechnical Commission test code that specifies particular requirements for determining airborne acoustical noise of mains-operated and cordless dry vacuum cleaners intended for household use (or under similar conditions). It supplements and modifies the general requirements in IEC 60704-1:2010 and is focused on reproducible measurement of sound emissions for product development, comparison and declaration.
Key scope points:
- Applies to dry vacuum cleaners for household use (mains and cordless); excludes industrial/professional machines.
- Covers noise measurement on carpet and hard floor surfaces, under conditions simulating normal use.
- Concerned with airborne noise only (not structure-borne noise).
Key topics and technical requirements
- Measurement methods: ISO 3743-1, ISO 3743-2 and ISO 3744 may be used; ISO 3744 is applicable to sources of any size.
- Definitions added: "cleaning head", "active nozzle" and "standard Wilton test carpet".
- Test carpet handling: specification of the standard Wilton test carpet removed from this Part and now referenced to IEC/TS 62885-1; ageing of test carpet and related pre-conditioning are addressed.
- Equipping and pre-conditioning: new, specific requirements for preparing appliances and accessories prior to measurement.
- Measurement uncertainty / standard deviations: repeatability and reproducibility estimates derived from round-robin tests:
- On carpets: repeatability r = 0.3 dB, reproducibility R = 0.8 dB.
- On hard floors: repeatability r = 0.2 dB, reproducibility R = 0.6 dB.
- Declaration and verification: standard deviations for production and total uncertainty for declared noise values are provided (examples for carpets: production σP = 0.5–1.0 dB; total σt = 0.9–1.3 dB; reference σM = 1.5 dB).
- Notes: a temporary “boost” setting (higher fan speed for occasional use) is not included in declared noise values.
Practical applications - who uses IEC 60704-2-1:2020
- Manufacturers: for product design, R&D, and noise performance optimization of household vacuum cleaners (including cordless models).
- Test laboratories and certification bodies: to perform standardized, comparable noise measurements for compliance testing and product certification.
- Regulatory authorities and buyers: to verify declared sound emissions and support labeling, procurement and consumer guidance.
- Quality control and production: to establish repeatable test procedures and verify production consistency against declared noise values.
Related standards
- IEC 60704-1:2010 - General requirements (this Part 2-1 supplements/modifies it)
- IEC 60704-3 - Declaration and verification of noise emission values
- IEC/TS 62885-1 and IEC 62885-2 / IEC 60312-1 - carpet and cleaning performance references used for test surfaces and procedures
- ISO 3743 / ISO 3744 - acoustical measurement methods referenced for test setups
This standard ensures consistent, reproducible noise testing for household dry vacuum cleaners, supporting product comparisons, regulatory compliance and consumer information.