1. Scope
This standard specifies the minimum allowable values of energy efficiency, the energy efficiency grades, the test methods and the inspection rules for household and similar microwave ovens (hereinafter referred to as microwave ovens).
This standard is applicable to the microwave ovens with maximum rated input power of 2500 W or less, utilizing ISM band electromagnetic energy at frequency of 2450 MHz and heating the objects in the chamber with resistance heating elements, including combination microwave ovens.
This standard is not applicable to microwave ovens for commercial or industrial use, or microwave ovens with a range hood.
Note: ISM band is the electromagnetic frequency range determined by the International Telecommunications Union (ITU) and used in the standard CISPR 11 developed by the International Special Committee or Radio Interference (CISPR).
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB 4706.21 Household and similar electrical appliances - Safety - Particular requirements for microwave ovens including combination microwave ovens
GB/T 18800 Household microwave oven - Methods for measuring performance
IEC 62301 Household electrical appliances C Measurement of standby power
3. Terms and definitions
The terms defined in GB 4706.21, GB/T 18800 and IEC 62301 and the following terms and definitions are applicable to this document.
3.1 Efficiency for microwave ovens
The ratio of the effective energy output to the energy input of the microwave oven, expressed in percentage (%).
3.2 Minimum allowable values of energy efficiency for microwave ovens
The minimum allowable efficiency values for microwave ovens under the test conditions stated in the standard, provided that the standby mode power, off mode power and maximum allowable values of energy consumption for grill-function are met, expressed in percentage (%).
3.3 Maximum allowable values of energy consumption for grill-function
The maximum allowable values of energy consumption for the grill function of microwave ovens under the test conditions stated in this standard, in watt-hour (W.h).
