Safety of household and similar electrical appliances - Part 21: Particular requirements for microwave ovens, including combination microwave ovens
1 Scope
This clause of 4706.1-2024 is replaced by the following.
This document specifies the safety requirements for household and similar microwave ovens.
This document deals with the safety of microwave ovens for household and similar use, their rated voltage being not more than 250 V.
This document also deals with combination microwave ovens, for which Annex AA is applicable.
This document also deals with microwave ovens intended to be used on board ships, for which Annex BB is applicable.
Appliances not intended for normal household use but which nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. However, if the appliance is intended to be used professionally to process food for commercial purposes, the appliance is not considered to be for household and similar use only.
As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account
——persons (including children) whose
• physical, sensory or mental capabilities; or
• lack of experience and knowledge
prevents them from using the appliance safely without supervision or instruction;
——children playing with the appliance.
Note 101: Attention is drawn to the fact that
——for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary;
——in many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities.
Note 102: This standard does not apply to
——commercial microwave ovens (GB/T 4706.90);
——industrial microwave heating equipment (GB 5959.6);
——appliances for medical purposes (GB 9706);
——appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).
2 Normative references
This clause of 4706.1-2024 is applicable except as follows.
Addition:
GB/T 4706.14 Safety of household and similar electrical appliances - Part 14: Particular requirements for grills,toasters and similar portable cooking appliances (GB/T 4706.14-2024, IEC 60335-2-9:2019, IDT)
GB/T 4706.22-2024 Safety of household and similar electrical appliances - Part 22: Particular requirements for stationary cooking ranges,hobs,ovens and similar appliances (IEC 60335-2-6:2018, IDT)
IEC 60068-2-6 Environmental testing - Part 2: Tests - Test Fc: Vibration (sinusoidal)
IEC 60068-2-27 Environmental testing - Part 2-27: Tests - Test Ea and guidance: Shock
IEC 60068-2-52 Environmental testing - Part 2-52: Tests - Test Kb: Salt mist, cyclic (sodium chloride solution)
IEC 60335-2-5:2012 Household and similar electrical appliances - Safety - Part 2-5: Particular requirements for dishwashers
3 Terms and definitions
This clause of 4706.1-2024 is applicable except as follows.
3.1.7 Addition:
NOTE 101: The rated frequency is the input frequency.
3.1.9 Replacement:
normal operation
operation of the appliance with 1000 g ± 50 g of potable water at an initial temperature of
20 °C ± 2 °C in a cylindrical borosilicate glass vessel having a maximum thickness of 3 mm and an outside diameter of approximately 190 mm. The vessel is placed on the centre of the shelf
3.101
microwave oven
appliance using electromagnetic energy in one or several of the ISM frequency bands 1 between 300 MHz and 30 GHz, for heating food and beverages in a cavity
Note: ISM frequency bands are the electromagnetic frequencies established by the ITU and reproduced in CISPR 11.
3.102
combination microwave oven
microwave oven in which heat is also provided in the cavity by simultaneous or consecutive operation of resistive heating elements
Note: The resistive heating elements are used to provide radiant heat, convection heat or steam.
3.103
cavity
space enclosed by the inner walls and the door in which the load is placed
3.104
shelf
horizontal support in the cavity on which the load is placed
3.105
door interlock
device or system that prevents the operation of the magnetron, unless the oven door is closed
3.106
monitored door interlock
door interlock system that incorporates a supervision device
3.107
temperature-sensing probe
device that is inserted into the food to measure its temperature and is a part of an oven control
4 General requirement
This clause of GB/T 4706.1-2024 is applicable.
