Home > News > Content
Household And Similar Electrical Appliances - Safety - Particular Requirements For Commercial Electric Food Warmers
Jan 24, 2018

Household and similar electrical appliances - Safety - Particular requirements for commercial electric food warmers



IEC Introduction

1 range


3 General requirements

4 General conditions for testing

5 empty chapter

6 classification

7 Marking and instructions

Protection against contact with live parts

9 Start of electric apparatus

10 Input power and current

11 Fever

12 empty chapter

13 Leakage current and electrical strength at operating temperature

14 empty chapter

15 resistant to moisture

16 Leakage current and electrical strength

17 Transformer and related circuit overload protection


19 Abnormal work

20 Stability and mechanical hazards

Mechanical Strength

22 structure

23 Internal wiring

24 elements

25 Power connection and external cord

26 Terminals for external conductors

27 Earthing Measures

Screws and Connections

29 Creepage distances, clearances and penetrating insulation distances

30 heat, fire and resistance to tracking

31 rust

32 Radiation, toxicity and similar hazards

Figure 101 Water splashing device



GB4706 The entire technical content of this part is mandatory.

This part is equivalent to IEC 60335-2-38: 1994 "Safety of household and similar electrical appliances - Part 2: Particular requirements for commercial single and double-sided electric heating panes" (third edition) and its amendments, No. 1 (1996). This part is the revision of GB4706.37-1997.

This part is to be used in conjunction with GB4706.1-1998 "Safety of household and similar electrical appliances Part 1: General requirements"

This part of the "applicable" part, said the corresponding provisions of GB4706.1-1998 apply; this part of the "replacement" part, the provisions of this section shall prevail; this part of that "Amendment" means that the relevant provisions in the relevant provisions of GB4706.1-1998 shall be subject to the modifications as set out in this part, and the remainder of the provisions of this Article shall apply; the part added "in this Part" , That in addition to meet the corresponding provisions of GB4706.1-1998, should also meet the additional provisions in this part.

In the technical content, the main differences between this part and GB47065.37-1997 are as follows:

- With regard to the scope of application, an increase of this part does not apply to the provisions of equipment with induction heating source (the first edition of Chapter 1);

- Added the definition of the installation wall (version 2.2.103);

- Provisions on the use of enclosures for appliances that are installed in combination with other appliances or fixed to the installation wall are added (Version 4.10);

- There are differences in the test conditions for motor-equipped appliances (version 4.101, edition 4.101, 1997);

- addition of equipotential graphic symbols and labeling of equipotential symbols (version 7.6; 7.102);

- Added the relevant provisions on the glass-ceramic or similar material clang utensils (Edition 7.12,18.1,21.101);

- Added the specific provisions for the contents of the instruction manual (version 7.12.1);

- Added to the relevant provisions of the Immersion Line (Version 7.103) concerning the partial immersion in water for cleaning of the apparatus or of the removable parts;

- additions to the maximum motor start-up time which could result in a prolonged start-up time; the removal of motor tests other than the cooling fan motor start-up test (Chapter 9 of the 1997 edition;

- Added requirements for appliances with a mass greater than 40 kg and without rollers or similar devices (version 11.2);

- the addition of a requirement to repeat the test at a rated voltage of 1.06 times (Edition 11.4), with regard to the configuration of the combination of heating elements during the test and, if the temperature rise of the motor, transformer or electronic circuit exceeds the limits,

- Added provisions regarding the provision of watering or washing water switches, which make it impossible for the water to come in contact with live parts (Version 15.101);

- Added provisions for the protection of appliances or removable electrical components intended for partial or total immersion in water, adequately protected against flooding (15.102);

- Elimination of the contents of the durability test of electric components, an increase of the apparatus of glass-ceramic or similar materials, the relevant provisions of the thermal stress test (Chapter 18 of the 1997 edition of this edition of Chapter 18);

- Elimination of the requirement that the contactor capable of withstanding 100 000 duty cycles not be short-circuited during the non-normal working test (1997 edition 19.4; edition 19.4);

- Elimination of the requirement to increase the creepage distance and clearances by 50% to meet the relevant protection requirements (1997 edition 22.101, 29.1; edition 22.101);

- Additional requirements and tests regarding the possibility of thermal breakers being able to disconnect from all poles of the power supply, as well as capillary fractures of ball-type and capillary type thermal circuit breakers (Edition 22.102);

- Added the requirement that the warning lights, etc. should be red (version 22.103);

- Added the requirement that portable appliances should be able to prevent the penetration of objects on the table or on the ground from the bottom surface (Version 22.104);

- Added provisions for the prevention of accidental dropping of double-sided electric heaters for hinged connections (Version 22.105);

- Added requirements for thermostat capillary-related bending test (23.3);

- addition of terminals for permanent connection of fixed wiring, if applicable to cord X-type connection, shall be provided with cord anchorage (Version 25.3);

- Elimination of the requirement that an injection-proof appliance should not be fitted with an appliance input socket (25.3, 1997 edition);

- differences in glow-wire test temperature for Appendix K (Chapter 30 of the 1997 edition; 30.2.1 of this edition);

- Added instructions regarding the operation of the appliance as unattended (version 30.2.2);

- Added instructions on the operating conditions of the switchgear with moving contacts (version 30.3)

- Added the relevant provisions on the combustion test of the adsorbent grease filter (edition 30.101).

Headings in bold in this section are defined in Chapter 2.

The appendix attribute of this part is stipulated in the appendix attribute in GB4706.1-1998.

The provisions, notes and diagrams added in this Part are numbered from 101.

This part of the proposed by the China Chamber of Commerce.

This part of the National Standardization Technical Committee of household electrical appliances catering business electrical services sub-committee focal point.

This part of the drafting unit: the State Food Service Machinery Quality Supervision and Inspection Center.

This part of the main drafters: Zhang Chengbin, Zhang Chunsheng, Xia Xiaoli, Zhan Yulan, Hong Yongping.

IEC Introduction

1) International Electrotechnical Commission (IEC) is a member of the National Electrotechnical Commission (IEC National Committee) formed a global standardization organization. The task of the IEC is to promote international cooperation on all topics related to standardization in the electrical and electronic fields. To this end, in addition to carrying out other activities, IEC also promulgated international standards. The development of international standards is entrusted to the technical committees. Any IEC National Committee interested in the issues involved may participate in this work. International organizations, government agencies and civil society organizations associated with the IEC may also participate. IEC collaborates closely with the International Organization for Standardization (ISO) on the terms set forth in the agreements between the two organizations.

2) A formal resolution or agreement on the technical aspects of the IEC developed by the Technical Committee with the participation of representatives of all concerned National Committees as close as possible to express an international consensus on the issues involved.

3) that the standards, technical reports or guidelines promulgated are in the form of recommendations for international use and, in this sense, are acceptable to national committees.

4) In order to promote international harmonization, IEC National Committees have agreed to apply IEC International Standards to national and regional standards as unambiguously as possible. Any inconsistency between the IEC standard and the corresponding national or regional standard shall be clearly indicated in the latter.

5) The IEC does not provide an approval mark, nor does it assume responsibility for any equipment claiming conformity to one of its standards.

IEC 60335 This part of the International Standard is prepared by the Subcommittee on the Safety of Commercial Electrical Catering Service Equipment, Part 61E, Subcommittee of IEC 61st "Safety of Household and Similar Electrical Appliances".

It constitutes the third edition of IEC 60335-2-38 and replaces the second edition issued in 1986.

Add: No. 16, Road 3, Sanjiang Industry Zone, Shengzhou, Zhejiang, China

Contact:Boris Yue      


Contact:Charles Yu     


Tel: +86-575-83703068

Mob: +8613456528940

Fax: +86-575-83539727

Skype: live:borisyuecn

Wechat & Whatsapp: +8613456528940

Copyright © Shengzhou Beno Electric Appliance Co.,Ltd All Rights Reserved.Tel: +86-575-83703068