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1、a Date: 20 December 2007 Origin: International Latest date for receipt of comments: 31 March 2008 Project no.: 2007/03429 Responsible committee: CPL/61/3 Refrigerators and food freezers Interested committees: Title: Draft BS EN 60335-2-89 ED.2.0 Household and similar electrical appliances - Safety P
2、art 2-89: Particular requirements for commercial refrigerating appliances with an incorporated or remote refrigerant unit or compressor Supersession information: If this document is published as a standard, the UK implementation of it will supersede BSEN60335-2-89 : 2002 and partially supersede. NON
3、E If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 31 March 2008. This draft is issued to allow comments from i
4、nterested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and P
5、atent Act 1988 or for circulation within a nominating organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within such an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001
6、or email ordersbsi-. British, International and foreign standards are also available from BSI Customer Services. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standar
7、ds which implement International or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/www.bsi-. Direct tel: 020 8996 7273 Responsible Committee Secretary: Mrs G D Salt (BSI) E-mail: geraldine.saltbsi- Draft for Public Comm
8、ent Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 07/30175418 DC Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 07:25:11 GMT+00:00 2008, Uncontrolled Copy, (c) BSI b Introduction
9、This draft standard is based on international discussions in which the UK has taken an active part. Your comments on this draft are welcome and will assist in the preparation of the consequent standard. If no comments are received to the contrary, then the UK will approve this draft. There is a high
10、 probability that this text could be adopted by CENELEC as a reference document for harmonization or as a European Standard. Recipients of this draft are requested to comment on the text bearing in mind this possibility. UK Vote Please indicate whether you consider the UK should submit a negative (w
11、ith reasons) or positive vote on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably
12、electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically s
13、hould still adhere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/www.bsi- Template for com
14、ments and secretariat observations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observation
15、s on each comment submitted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its us
16、e in the UK. Delete reference to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 07:25:11 GMT+00:00 2008, Uncontrolled Copy, (c) BSI FORM CD (IEC)
17、 2002-08-08 61C/408/CD COMMITTEE DRAFT (CD) IEC/TC or SC: 61C Project number IEC 60335-2-89 Ed 2.0 Title of TC/SC: Household appliances for refrigeration Date of circulation 2007-12-07 Closing date for comments 2008-03-07 Also of interest to the following committees Supersedes document 61C/406/MCR F
18、unctions concerned: Safety EMC Environment Quality assurance Secretary: Dr X Zhou X THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT SHOULD NOT BE USED FOR REFERENCE PURPOSES. RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGH
19、TS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. Title: IEC 60335-2-89 Ed 2.0: Household and similar electrical appliances - Safety Part 2-89: Particular requirements for commercial refrigerating appliances with an incorporated or remote refrigerant unit or compressor (Titre) : CE
20、I 60335-2-89 Ed 2.0: Appareils lectrodomestiques et analogues - Scurit - Partie 2-89 : Rgles particulires pour les appareils de rfrigration usage commercial avec une unit de condensation du fluide frigorigne ou un compresseur incorpors ou distance Introductory note This CD for the second edition of
21、IEC 60335-2-89 is circulated based on the following documents (see also see 61C/400/RM): 61C/371/DC and 61C/381A/INF Copyright 2007 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this electronic file, to make a copy and to print out the content for t
22、he sole purpose of preparing National Committee positions. You may not copy or “mirror“ the file or printed version of the document, or any part of it, for any other purpose without permission in writing from IEC. Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15
23、07:25:11 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 2 61C/408/CD The following changes to IEC 60335-2-89 Ed 1.2 will form the basis of Ed 2 Title: Replace title with the following: HOUSEHOLD AND SIMILAR ELECTRICAL APPLIANCES SAFETY Part 2-89: Particular requirements for commercial refrigerating appl
24、iances with an incorporated or remote refrigerant unit or compressor FOREWORD In the paragraph after NOTE 1 delete “condensing” 3 Definitions 3.1.9 In the last paragraph of the term definition, delete “condensing” (in 2 places) 3.101 In the term definition, delete “condensing” 3.104 Replace the term
25、 and the term definition by the following. refrigerant unit factory assembled unit for performing part of the refrigeration cycle (compressing gas, condensation or gas cooling) comprising of one or more refrigerant compressors with motors, condensers or gas coolers, liquid receivers, interconnection
26、 pipe work and ancillary equipment, all mounted on a common base Add the following new definitions: 3.107 transcritical refrigeration system refrigeration system where the pressure in the high pressure side is above the pressure where the vapour and liquid states of the refrigerant can coexist in th
27、ermodynamic equilibrium 3.108 gas cooler heat exchanger in which, after compression the refrigerant is cooled down, by transferring heat to an external cooling medium, without changing state NOTE A gas cooler is normally used in transcritical refrigeration systems. 3.109 design pressure (DP) gauge p
28、ressure that has been assigned to the high pressure side of a transcritical refrigeration system 3.110 bursting disc disc or foil which bursts at a predetermined pressure to reduce a pressure in a refrigeration system 3.111 pressure relief device pressure sensing device, intended to reduce pressure
29、automatically when pressures within the refrigeration system exceed the setting pressure of the device Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 07:25:11 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 3 61C/408/CD 7 Marking 7.1 In the addition, add the followi
30、ng: Appliances employing R-744 in a transcritical refrigeration system shall be marked with the substance of the following: WARNING: System contains refrigerant under high pressure. Do not tamper with the system. It must be serviced by qualified persons only. Appliances employing R-744 in a transcri
31、tical refrigeration system shall be marked with symbol ISO 7000 1701. 7.6 In the addition, add the following: symbol ISO 7000 1701 high pressure: 7.12 In the addition, add the following: If symbol ISO 7000 1701 is used, its meaning shall be explained. 7.12.1 In the addition delete “condensing” (in 4
32、 places) Add the following: In appliances employing R-744 in a transcritical refrigeration system the instructions shall include the substance of the following WARNING: The refrigeration system is under high pressure. Do not tamper with it. Contact qualified service personal before disposal. 7.15 In
33、 the second paragraph delete “condensing”. 19 Abnormal operation 19.103 In the first paragraph of the test specification delete “condensing”. 22 Construction Add a new subclause 22.115 Appliances employing a transcritical refrigeration system shall in the high pressure side of the refrigeration syst
34、em include a pressure relief device on the compressor or between the compressor and the gas cooler. There shall be no shut off devices or other components except piping between the compressor and the pressure relief device, which could introduce a pressure drop. The pressure relief device shall be m
35、ounted so that the refrigerant released from the system cannot cause any harm to the user of the appliance. The aperture shall be located so that it is unlikely to be obstructed in normal use. The pressure relief device shall have no provisions for setting by the end user. Licensed Copy: London Sout
36、h Bank University, London South Bank University, Fri Feb 15 07:25:11 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 4 61C/408/CD The operating pressure of the pressure relief device shall be no higher than the design pressure of the high pressure side. The design pressure of the high pressure side shall
37、 be not less than the minimum high side test pressure required in table 101 of subclause 22.7 of IEC 60335-2-34 divided by 3. The refrigeration system, including all components, shall withstand the pressures expected in normal and abnormal use and during standstill. Pressure testing has to be done o
38、n the complete refrigeration system, however it can be done separately for the low pressure side and for the high pressure side. Compliance is checked by inspection and by the following test: The pressure relief device is made inoperable and the test pressure is raised gradually. for the high pressu
39、re side until a pressure not less than the minimum high side test pressure required in Table 101 of subclause 22.7 of IEC 60335-2-34 is reached, however not less than 3 times the DP; for the low pressure side until a pressure not less than the minimum low side test pressure required in Table 102 of
40、subclause 22.7 of IEC 60335-2-34 is reached. For a refrigeration system with an intermediate pressure between high pressure side and low pressure side, all parts subjected to the intermediate pressure are considered to be on the low pressure side. The pressure is maintained for one minute and the pa
41、rts under test shall show no leakage. NOTE The test is not carried out on motor-compressors complying with IEC 60335-2-34. 24 Components 24.1.4 In the addition, add the following dash items: For pressure relief devices of the bursting disc type, three separate samples of the appropriate parts of the
42、 refrigeration system are tested and the bursting disc shall operate in the same way for each sample tested 1 electrical pressure relief devices for automatic operation: 30,000 for manual reset 300 Electrical pressure relief devices shall comply with IEC 60730-2-6. For the purpose of this standard e
43、lectrical pressure relief devices shall comply with IEC 60730-2-6 and shall be of type 2B and type 2N; shall have a trip free mechanism of type 2E; the deviation and drift shall not exceed + 0%. For mechanical pressure relief devices not falling under the scope of IEC 60730 the operating pressure mu
44、st be no more than the setting of the device plus 10 %. Add the following new subclause: 24.102 The discharge capacity of the pressure relief device shall be such that it is able to release an adequate amount of refrigerant so that the pressure during the release of the refrigerant does not increase
45、 beyond the pressure setting of the pressure relief device even if the compressor is operating. Compliance is checked by validation of the manufacturers calculations or by an appropriate test. Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 07:25:11 GMT+00:00 2008, Uncontrolled Copy, (c) BSI 5 61C/408/CD Annexes Replace the title of Annex D by the following: Annex D (normative) Thermal motor protectors Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 07:25:11 GMT+00:00 2008, Uncontrolled Copy, (c) BSI
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