GB/T 4214.8-2021: Test method for noise of household and similar electrical appliances - Particular requirements for electric cooking ranges, ovens, grills, microwave ovens and any combination of these

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Scope

This Clause of GB/T 4214.1-2017 is applicable except as follows:
1.1 Scope
1.1.1 General
Addition:
This Part of GB/T 4214 apply to electric cooking ranges, ovens, grills, microwave ovens and
any combination of these for household and similar use.
NOTE 101: This Part do not apply to hobs due to lack of standardized load (pans) representative of
normal use and ensuring a good repeatability of tests. For these applications, the loading and operating
conditions are under consideration.
This Part does not apply to appliances or parts of appliances that use gas energy.
1.1.2 Types of noise
Replacement:
The methods specified in GB/T 6881.2, GB/T 6881.3 and GB/T 3767 can be used for measuring
noise emitted by electric cooking ranges, ovens, grills, microwave ovens and any combination
of these.
1.1.3 Size of the source
Replacement:
The method specified in GB/T 3767 is applicable to noise sources of any size. When applying
GB/T 6881.2 and GB/T 6881.3, care should be taken that the maximum size of the appliance
under test fulfils the requirements specified in 1.3 of GB/T 6881.2 and GB/T 6881.3.
type as the standard exhaust system shall be used for connection of the appliance to the standard
exhaust system.
6.1.2 Replacement:
Prior to noise measurements, the appliance, equipped according to 6.1.1, shall have been in
operation at maximum speed and power for at least 10 min. The load shall be chosen according
to 3.111.
6.1.3 Replacement:
Stabilizing is included in operating, according to 6.4.2.
6.2 Supply of electrical energy and of water or gas
6.2.3 and 6.2.4 Not applicable.
6.4 Loading and operating of appliances during test
6.4.2 Replacement:
Unless otherwise specified in this standard, for each function settings shall be chosen that
produce the highest noise emission. As a result, the highest noise emission value from all
functions shall be reported. Any cleaning mode shall be disregarded.
In the case of multiple cavity ovens, the multiple cavities shall be operated simultaneously.
NOTE 101: In general, the highest noise emission occurs at the highest air circulation, turntable speed,
rotisserie speed, fan speed, microwave power, etc. When provided, the manufacturer’s instructions
should be taken into account.
For microwave function, including all possible combined functions, a load according to 3.111
shall be applied. Measurements shall be started 2 min after switching on and shall be finished
before boiling occurs.
For other heating functions, temperature conditions shall be as follows:
• boiling temperature of water for steam function;
• 175 °C for ovens with forced air circulation heating function and hot steam function;
• 200 °C for all other heating functions;
• maximum setting for grill function.
Measurements shall be started when the specified temperature is reached. On grills,
measurements shall be started 15 min after switching on.
NOTE 102: If there is no indicator, reaching of the specified temperature could be controlled with a

Basic Data

Standard ID	GB/T 4214.8-2021 (GB/T4214.8-2021)
Description (Translated English)	Test method for noise of household and similar electrical appliances - Particular requirements for electric cooking ranges, ovens, grills, microwave ovens and any combination of these
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	Z32
Word Count Estimation	14,177
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration