1、 IEC 60335-2-90 Edition 4.0 2015-08 INTERNATIONAL STANDARD Household and similar electrical appliances Safety Part 2-90: Particular requirements for commercial microwave ovens IEC 60335-2-90:2015-08(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserv
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11、Particular requirements for commercial microwave ovens INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 97.040.20 ISBN 978-2-8322-2857-9 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 IEC 6033
12、5-2-90:2015 IEC 2015 CONTENTS FOREWORD . 4 INTRODUCTION . 7 1 Scope 8 2 Normative references . 9 3 Definitions . 9 4 General requirement 12 5 General conditions for the tests 12 6 Classification . 13 7 Marking and instructions 13 8 Protection against access to live parts . 15 9 Starting of motor-ope
13、rated appliances 15 10 Power input and current . 15 11 Heating 15 12 Void . 16 13 Leakage current and electric strength at operating temperature 16 14 Transient overvoltages . 16 15 Moisture resistance 16 16 Leakage current and electric strength. 16 17 Overload protection of transformers and associa
14、ted circuits . 17 18 Endurance . 17 19 Abnormal operation 18 20 Stability and mechanical hazards . 19 21 Mechanical strength . 20 22 Construction 22 23 Internal wiring 26 24 Components 26 25 Supply connection and external flexible cords 27 26 Terminals for external conductors 28 27 Provision for ear
15、thing . 28 28 Screws and connections 28 29 Clearances, creepage distances and solid insulation 28 30 Resistance to heat and fire 28 31 Resistance to rusting . 28 32 Radiation, toxicity and similar hazards 28 Annex A (informative) Routine tests 30 Annex AA (normative) Combination microwave ovens . 32
16、 Annex BB (normative) Requirements for commercial microwave ovens without a cavity door and with conveyor-type means . 34 Annex CC (informative) Overview of the requirements for covers, means of access and similar . 47 Annex DD (informative) Rationales for the microwave barrier and associated leakag
17、e tests . 48 IEC 60335-2-90:2015 IEC 2015 3 Annex EE (normative) Microwave ovens intended to be used on board ships 54 Bibliography 57 Figure 101 Test rod for interlock concealment 29 Figure BB.1 Splash apparatus 44 Figure BB.2 Arrangement for measurement of microwave leakage from access openings .
18、45 Figure BB.3 Examples of definitions of Clause 3 and Clause BB.3 46 Table 101 Number of potatoes . 19 Table BB.101 Specifications for microwave barriers 41 4 IEC 60335-2-90:2015 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES SAFETY Part 2-90: Parti
19、cular requirements for commercial microwave ovens FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation
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29、 publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. This part of International Standard IEC 60335 has been prepared by subcommitt
30、ee 61B: Safety of microwave appliances for household and commercial use, of IEC technical committee 61: Safety of household and similar electrical appliances. This fourth edition cancels and replaces the third edition published in 2006 including its Amendment 1 (2010) and Amendment 2 (2014). It cons
31、titutes a technical revision. The principal changes with respect to the previous edition are as follows (minor and editorial changes are not listed): a statement in 7.12 is required for appliances intended to be used on commercial road vehicles; a statement in 7.12 is required concerning cleaning of
32、 the appliance with a water jet; the replacement of 22.103, 22.104 and 22.105 allows interlock systems with at least one concealed door interlock as well as alternative interlock systems without concealed door interlock; IEC 60335-2-90:2015 IEC 2015 5 requirements are added for appliances for instal
33、lation in commercial road vehicles; an annex is added dealing with routine tests. The text of this standard is based on the following documents: FDIS Report on voting 61B/529/FDIS 61B/536/RVD Full information on the voting for the approval of this standard can be found in the report on voting indica
34、ted in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This Part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments. It was established on the basis of the fourth edition (2001) of that standard. NOTE 1 When
35、“Part 1” is mentioned in this standard, it refers to IEC 60335-1. This Part 2 supplements or modifies the corresponding clauses in IEC 60335-1, so as to convert that publication into the IEC standard: Safety requirements for commercial microwave ovens. When a particular subclause of Part 1 is not me
36、ntioned in part 2, that subclause applies as far as is reasonable. When this standard states “addition“, “modification“ or “replacement“, the relevant text in Part 1 is to be adapted accordingly. NOTE 2 The following numbering system is used: subclauses, tables and figures that are numbered starting
37、 from 101 are additional to those in Part 1; unless notes are in a new subclause or involve notes in Part 1, they are numbered starting from 101, including those in a replaced clause or subclause; additional annexes are lettered AA, BB, etc. NOTE 3 The following print types are used: requirements: i
38、n roman type; test specifications: in italic type; notes: in small roman type. Words in bold type in the text are defined in Clause 3. When a definition concerns an adjective, the adjective and the associated noun are also in bold. The following differences exist in the countries indicated below. 5.
39、3: Microwave leakage is not to exceed 10 W/m 2during the initial test (Japan, USA and Canada). 6.1: Microwave ovens may be class OI if the rated voltage does not exceed more than 150 V (Japan). 7.12: Some warnings have to be marked on the appliance and be visible to the user (Canada). Clause 18: The
40、 test is carried out on two appliances (USA). 19.11.2: The input voltage variation is not applied (USA). 19.13: Microwave leakage is only measured at the end of each test (USA). 21.102: The applied force is 222 N (USA). 21.105: Microwave leakage is not to exceed 50 W/m 2(Japan and USA). 22.111: Micr
41、owave leakage is only measured at the end of the test (USA). 6 IEC 60335-2-90:2015 IEC 2015 22.112: Microwave leakage is not to exceed 50 W/m 2(Japan and USA). 22.116: All access to the cavity has to be prevented (USA). 27.2: A terminal for an external equipotential conductor is not required (Japan)
42、. A list of all parts of the IEC 60335 series, under the general title: Household and similar electrical appliances Safety, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC website und
43、er “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. A bilingual version of this publication may be issued at a later date. NOTE The attention of National Committees is dra
44、wn to the fact that equipment manufacturers and testing organizations can need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is
45、 the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 12 months or later than 36 months from the date of publication. IEC 60335-2-90:2015 IEC 2015 7 INTRODUCTION It has been assumed in the drafting of this international st
46、andard 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 normal
47、use taking into account the manufacturers instructions. It also covers abnormal situations that can be expected in practice and takes into account the way in which electromagnetic phenomena can affect the safe operation of appliances. This standard takes into account the requirements of IEC 60364 as
48、 far as possible so that there is compatibility with the wiring rules when the appliance is connected to 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 rel
49、evant part 2 is applied to each function separately, as far as is reasonable. If applicable, the influence of one function on the other is taken into account. When a part 2 standard does not include additional requirements to cover hazards dealt with in Part 1, Part 1 applies. NOTE 1 This means that the technical committees responsible for the part 2 standards have determined that it is not necessary to specify particular requirements for the appliance
