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GB/T 23128-2008Induction cookers (English PDF)

电磁灶

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the PRC

Level / Type

National · Recommended

Issue date

December 30, 2008

Implementation date

September 1, 2009

Scope

GB/T 23128-2008 is the English-translated version of 电磁灶.

China's national product standard for induction cookers. It specifies the classification, the requirements, the test methods, the inspection rules and the marking, packaging, transport and storage of induction cooking appliances.

An induction cooker does not heat itself and then heat the pan; it induces current directly in the pan. A coil beneath the ceramic top carries alternating current at some twenty to thirty kilohertz, the changing field induces eddy currents in a ferromagnetic pan sitting on it, and the pan's own resistance turns those currents into heat.

The hob itself stays comparatively cool, all the heat is produced where the food is, and the efficiency is far above that of any other cooking method - which is why induction has taken the market it has.

The consequences for a product standard are unusual. The appliance only works with a pan of suitable material and diameter, so pan detection and the behaviour with an unsuitable, empty or absent pan are functional requirements rather than conveniences: an empty pan on full power reaches destructive temperature very quickly.

It is a power electronics device rather than a heating element, so its efficiency, its power control and its behaviour on supply variation are properties of the inverter.

It radiates a strong magnetic field at a frequency where compliance with the electromagnetic exposure limits has to be demonstrated. And the ceramic top is a structural component carrying a heavy pan over a live coil, so its mechanical strength and thermal shock resistance are safety requirements.

The standard covers the performance - heating rate, efficiency, temperature control, uniformity - along with those. Issued on 30 December 2008 and in force since 1 September 2009.

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Document preview — GB/T 23128-2008

National Standard of the People's Republic of China

ICS: 97.040.50
Classification: Y 68

Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the PRC

1 Scope
2 Normative References
3 Terms and Definitions
4 Classification and Designation
5 Technical Requirements
6 Test Method
7 Inspection Rules
8 Marking, Packaging, Transportation and Storage

Foreword

This standard specifies the scope, terms and definitions, classification and designation, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of household and similar induction cookers.

This standard is applicable to household and similar induction cookers.

Electromagnetic heating parts of gas-electric household and similar appliances shall meet the requirements of this standard.

This standard is not applicable to industrial induction cookers.

Requirements for concave cookers are under consideration.

1 Scope

This standard is applicable to household and similar induction cookers.

Electromagnetic heating parts of gas-electric household and similar appliances shall meet the requirements of this standard.

This standard is not applicable to industrial induction cookers.

Requirements for concave cookers are under consideration.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this part. However parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.

GB/T 1019 General Requirements for the Package of Household and Similar Electrical Appliances

GB 2423.1 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods Tests A: Cold (GB 2423.1-2001, idt IEC 60068-2-1:1990)

GB 2423.2 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Tests B: Dry Heat (GB 2423.2-2001, idt IEC 60068-2-2: 1974)

GB 2423.3 Environmental Testing for Electric and Electronic Products - Part 2: Testing Methods - Test Cab: Damp Heat Steady State (GB 2423.3-2006, IEC 60068-2-78: 2001, IDT)

GB 2423.7 Environmental Testing for Electric and Electronic Products Part 2: Test Methods - Test Ec and Guidance: Drop and Topple Primarily for Equipment-Type Specimens (GB 2423.7-1995, idt IEC 60068-2-31: 1982)

GB 2423.17 Environmental Testing for Electric and Electronic Products - Part 2: Test Method - Test Ka: Salt Mist (GB 2423.17-2008, IEC 60068-2-11: 1981, IDT)

GB/T 4214.1 Acoustics - Household and Similar Electrical Appliances - Test Code for Determination of Airborne Acoustical Noise - Part 1: General Requirements (GB/T 4214.1-2000, eqv IEC 60704-1: 1997)

GB 4706.1 Household and Similar Electrical Appliances-Safety - Part 1: General Requirements (GB 4706.1-2005, IEC 60335-1: 2004, IDT)

GB 4706.22 Safety of Household and Similar Electric Appliances - Particular Requirements for Stationary Cooking Ranges, Hobs, Ovens and Similar Appliances (GB 4706.22-2002, IEC 60335-2-6: 1997, IDT)

GB 4706.29 Household and Similar Electrical Appliances-Safety - Particular Requirements for Portable Induction Cooker

GB/T 4798.2-2008 Environmental Conditions Existing in the Application of Electric and Electronic Products - Part 2: Transportation (IEC 60721-3-2: 1997, MOD)

GB 9684 Hygienic Standard for Stainless Steel Food Containers and Table Wares

GB 11333 Hygienic Standard for Aluminum-wares for Food Use

GB 11678 Hygienic Standard for Polytetrafluorethylene Used as Inner Coating of Food Containers