EN 60335-2-50-2003 en Household and similar electrical appliances C Safety Part 2-50 Particular requirements for commercial electric bains-marie (Incorporating corrigendum Septembe.pdf

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1、BRITISH STANDARD BS EN 60335-2-50:2003 +A1:2008 Incorporating corrigendum September 2007 Household and similar electrical appliances Safety Part 2-50: Particular requirements for commercial electric bains-marie ICS 97.040.20 BS EN 60335-2-50:2003+A1:2008 This British Standard was published under the

2、 authority of the Standards Policy and Strategy Committee on 16 June 2003 BSI 2008 ISBN 978 0 580 63093 4 National foreword This British Standard is the UK implementation of EN 60335-2-50:2003+A1:2008, incorporating corrigendum September 2007. It is identical with IEC 60335-2-50:2002, incorporating

3、amendment 1:2007. It supersedes BS EN 60335-2-50:2003, which will be withdrawn on 2011-02-01. The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC

4、amendment 1 is indicated by !“. The UK participation in its preparation was entrusted by Technical Committee CPL/61, Safety of household and similar electrical appliances, to Subcommittee CPL/61/5, Commercial catering equipment. A list of organizations represented on this subcommittee can be obtaine

5、d on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication

6、Amd No. Date Comments 17482 Corrigendum No. 1 31 January 2008 Implementation of CENELEC corrigendum September 2007. Last paragraph of EN foreword replaced. Addition to Annex ZB deleted 30 September 2008 Implementation of IEC amendment 1:2007 with CENELEC endorsement A1:2008EUROPEAN STANDARD EN 60335

7、-2-50:2003+A1 NORME EUROPENNE EUROPISCHE NORM April 2008 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All righ

8、ts of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60335-2-50:2003 E ICS 97.040.20 English version Household and similar electrical appliances Safety Part 2-50: Particular requirements for commercial electric bains-marie (IEC 60335-2-50:2002) Appareil

9、s lectrodomestiques et analogues Scurit Partie 2-50: Rgles particulires pour les bains-marie lectriques usage collectif (CEI 60335-2-50:2002) Sicherheit elektrischer Gerte fr den Hausgebrauch und hnliche Zwecke Teil 2-50: Besondere Anforderungen fr elektrische Warmhaltegerte fr den gewerblichen Gebr

10、auch (IEC 60335-2-50:2002) This European Standard was approved by CENELEC on 2003-02-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date

11、 lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under t

12、he responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Icel

13、and, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. Incorporating corrigendum September 2007Foreword The text of document 61E/405/FDIS, future fourth edition of IEC 60335-2-50, prepared by SC 61E of the IEC Technical Committ

14、ee 61, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60335-2-50 on 2003-02-01. This European Standard replaces EN 60335-2-50:2000. The following dates are applicable: - latest date by which the EN has to be implemented at national level by publication of an identic

15、al national standard or by endorsement (dop) 2003-11-01 - date on which national standards conflicting with the EN have to be withdrawn (dow) 2006-02-01 This part 2 has to be used in conjunction with EN 60335-1, Household and similar electrical appliances Safety Part 1: General requirements. It was

16、established on the basis of the 2002 edition of that standard. Amendments and revisions of Part 1 have also to be taken into account and the dates when such changes become applicable will be stated in the relevant amendment or revision of Part 1. This part 2 supplements or modifies the corresponding

17、 clauses of EN 60335-1, so as to convert it into the European Standard: Safety requirements for commercial electric bains-marie. When a particular subclause of Part 1 is not mentioned in this part 2, that subclause applies as far as is reasonable. When this standard states “addition“, “modification“

18、 or “replacement“, the relevant text of Part 1 is to be adapted accordingly. NOTE 1 The following numbering system is used: - subclauses, tables and figures that are numbered starting from 101 are additional to those in Part 1; - unless notes are in a new subclause or involve notes in Part 1, they a

19、re numbered starting from 101, including those in a replaced clause or subclause; - additional annexes are lettered AA, BB, etc.; - subclauses, notes and annexes that are additional to those in the IEC standard are prefixed with the letter Z. NOTE 2 The following print types are used: - requirements

20、: in roman type; - test specifications: in italic type; - notes: in small roman type. Words in bold in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the associated noun are also in bold. There are no special national conditions causing a deviation from

21、this European Standard, other than those listed in Annex ZA to EN 60335-1. _ Page2 There are no national deviations from this European Standard, other than those listed in Annex ZB to EN 60335-1. BS EN 60335-2-50:2003+A1:2008Introduction An investigation by CENELEC TC 61 has shown that all risks fro

22、m products within the scope of this standard are fully covered by the Low Voltage Directive, 73/23/EEC. For products having mechanical moving parts, a risk assessment in accordance with the Machinery Directive, 98/37/EC, has shown that the risks are mainly of electrical origin and consequently this

23、directive is not applicable. However, the relevant essential safety requirements of the Machinery Directive are covered by this standard together with the principal objectives of the Low Voltage Directive. _ Endorsement notice The text of the International Standard IEC 60335-2-50:2002 was approved b

24、y CENELEC as a European Standard without any modification. _ Page3 Foreword to amendment A1 _ Endorsement notice The text of amendment 1:2007 to the International Standard IEC 60335-2-50:2002 was approved by CENELEC as an amendment to the European Standard without any modification. _ The text of doc

25、ument 61E/588/FDIS, future amendment 1 to IEC 60335-2-50:2002, prepared by SC 61E, Safety of electrical commercial catering equipment, of IEC Technical Committee 61, Safety of household and similar electrical appliances, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as a

26、mendment A1 to EN 60335-2-50:2003 on 2008-02-01. The following dates are applicable: - latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2008-11-01 - date on which national standards conflicting with th

27、e amendment have to be withdrawn (dow) 2011-02-01 This amendment supplements or modifies the corresponding clauses of EN 60335-2-50:2003. There are no special national conditions causing a deviation from this amendment. There are no national deviations from this amendment. BS EN 60335-2-50:2003+A1:2

28、008CONTENTS INTRODUCTION.5 1 Scope.6 2 Normative references.6 3 Definitions6 4 General requirement.7 5 General conditions for the tests 8 6 Classification8 7 Marking and instructions.8 8 Protection against access to live parts10 9 Starting of motor-operated appliances 10 10 Power input and current .

29、10 11 Heating10 12 Void .11 13 Leakage current and electric strength at operating temperature11 14 Transient overvoltages .11 15 Moisture resistance11 16 Leakage current and electric strength.14 17 Overload protection of transformers and associated circuits .14 18 Endurance14 19 Abnormal operation14

30、 20 Stability and mechanical hazards .14 21 Mechanical strength .15 22 Construction.15 23 Internal wiring.16 24 Components.17 25 Supply connection and external flexible cords 17 26 Terminals for external conductors.17 27 Provision for earthing .17 28 Screws and connections.18 29 Clearances, creepage

31、 distances and solid insulation18 30 Resistance to heat and fire.18 31 Resistance to rusting18 32 Radiation, toxicity and similar hazards18 Annexes .20 Bibliography20 Figure 101 Splash apparatus .19 Page4 BS EN 60335-2-50:2003+A1:2008INTRODUCTION It has been assumed in the drafting of this Internati

32、onal Standard that the execution of its provisions is entrusted to appropriately qualified and experienced persons. This standard recognizes the internationally accepted level of protection against hazards such as electrical, mechanical, thermal, fire and radiation of appliances when operated as in

33、normal use taking into account the manufacturers instructions. It also covers abnormal situations that can be expected in practice. This standard takes into account the requirements of IEC 60364 as far as possible so that there is compatibility with the wiring rules when the appliance is connected t

34、o the supply mains. However, national wiring rules may differ. If an appliance within the scope of this standard also incorporates functions that are covered by another part 2 of IEC 60335, the relevant part 2 is applied to each function separately, as far as is reasonable. If applicable, the influe

35、nce of one function on the other is taken into account. This standard is a product family standard dealing with the safety of appliances and takes precedence over horizontal and generic standards covering the same subject. An appliance that complies with the text of this standard will not necessaril

36、y be considered to comply with the safety principles of the standard if, when examined and tested, it is found to have other features that impair the level of safety covered by these requirements. An appliance employing materials or having forms of construction differing from those detailed in the r

37、equirements of this standard may be examined and tested according to the intent of the requirements and, if found to be substantially equivalent, may be considered to comply with the standard. Page5 BS EN 60335-2-50:2003+A1:2008HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES SAFETY Part 2-50: Particular

38、 requirements for commercial electric bains-marie 1 Scope This clause of Part 1 is replaced by the following. This International Standard deals with the safety of electrically operated commercial bains- marie not intended for household use, their rated voltage being not more than 250 V for single-ph

39、ase appliances connected between one phase and neutral, and 480 V for other appliances. NOTE 101 These appliances are used, for example in restaurants, canteens, hospitals and similar commercial enterprises. The electrical part of appliances making use of other forms of energy is also within the sco

40、pe of this standard. As far as is practicable, this standard deals with the common hazards presented by these types of appliances. NOTE 102 Attention is drawn to the fact that for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may be necessary; in m

41、any countries additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities; for appliances intended to be used outdoors, additional requirements may be necess

42、ary. NOTE 103 This standard does not apply to appliances designed exclusively for industrial purposes; 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); continuous process appliances for th

43、e mass production of food. 2 Normative references This clause of Part 1 is applicable. 3 Definitions This clause of Part 1 is applicable except as follows. 3.1.4 Addition: NOTE 101 The rated power input is the sum of the power inputs of all the individual elements in the appliance that can be on at

44、one time; where there are several such combinations possible, that giving the highest power input is used in determining the rated power input. Page6 BS EN 60335-2-50:2003+A1:20083.1.9 Replacement: normal operation operation of the appliance under the following conditions Open-well and wet-heat-type

45、 bains-marie are filled with water to the indicated level and topped up during the test in accordance with the manufacturers instructions. The appliance is operated with any control intended to be operated by the user set at maximum. If the water boils, the control is then adjusted to the lowest set

46、ting that maintains simmering. No covers or containers are fitted. Dry-heat-type bains-marie are operated with any controls set at the maximum. Empty food containers are placed in the well but with the container covers removed. Combined-type appliances are operated under the most unfavourable condit

47、ions. Motors incorporated in the appliance are operated in the intended manner under the most severe conditions that can be expected in normal use taking into account the manufacturers instructions. 3.101 bain-marie an appliance with a well that is used for the storage of hot food in containers prio

48、r to serving. The containers are indirectly heated by hot air, steam or water in the well 3.102 open-well-type bain-marie an appliance where the food containers rest in water in a heated well 3.103 wet-heat-type bain-marie an appliance where the fitted food containers are heated by steam generated w

49、ithin the appliance. The pressure in the well or steam generator does not differ significantly from atmospheric pressure 3.104 dry-heat-type bain-marie an appliance where the fitted food containers are heated by warm air generated within the appliance 3.105 indicated level a mark on the appliance to indicate the maximum liquid level for correct operation 3.106 install