IEC 60704-2-2:1985 pdf free download.Test code for the determination of airborne acoustical noise emitted by household and similar electrical appliances. Part 2: Particular requirements for forced draught convection heaters.
The conditions of measurement specified in this standard simulate, as far as possible, the normal use of forced draught convection heaters. They take into account the variations in noise which can occur from the appliance under test and are intended to ensure reproducibility when the measurements are made by different laboratories.
It is recommended to consider noise data as part of performance data.
1. Scope and object
This clause of Part I is applicable except as follows:
l.1 Scope
Replacement:
This standard is applicable to electric forced draught convection heaters, (fan heaters), designed for placing on the floor, table or counter, etc., or for wall-mounting.
This standard does not apply to:
— electric storage room heaters,
— room humidifiers.
— room dehumidifiers,
— air cleaners,
— heaters designed exclusively for industrial purposes.
3. Terms and definitions
This clause of Part 1 is applicable.
4. Measurement methods and acoustical environments
This clause of Part 1 is applicable except as follows:
4.2 Direct method
Addition.
Note. — if pure tone components are present in the noise emitted, proper precautions should be taken as specified in iSO Standard 3743.
4.3 Comparison method
Addition:
Note. — If pure tone components are present in the noise emitted, proper precautions should be taken as specified in ISO Standard 3743 and ISO Standard 3744.IEC 60704-2-2:1985 pdf download