1、BRITISH STANDARD BS EN 61010-2-051:2003 Incorporating Corrigendum No. 1 Safety requirements for electrical equipment for measurement, control, and laboratory use Part 2-051: Particular requirements for laboratory equipment for mixing and stirring The European Standard EN 61010-2-051:2003 has the sta
2、tus of a British Standard ICS 19.080; 71.040.20 BS EN 61010-2-051:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 12 December 2003 BSI 2 February 2004 ISBN 0 580 43062 6 National foreword This British Standard is the official English lan
3、guage version of EN 61010-2-051:2003. It is identical with IEC 61010-2-051:2003. It supersedes BS EN 61010-2-051:1996 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee EPL/66, Safety of measuring, control and laboratory equipment, which has the responsi
4、bility to: A list of organizations represented on this committee can be obtained on request to its secretary. The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standard
5、s Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. 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 do
6、es not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and p
7、romulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since pu
8、blication Amd. No. Date Comments 15004 Corrigendum No. 1 2 February 2004 Correct version of IEC document insertedEUROPEAN STANDARD EN 61010-2-051 NORME EUROPENNE EUROPISCHE NORM October 2003 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechniq
9、ue Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61010-2-051:2003 E ICS 19.080; 71.040.20 Supersedes EN 61010-2-051
10、:1995English version Safety requirements for electrical equipment for measurement, control, and laboratory use Part 2-051: Particular requirements for laboratory equipment for mixing and stirring (IEC 61010-2-051:2003) Rgles de scurit pour appareils lectriques de mesurage, de rgulation et de laborat
11、oire Partie 2-051: Prescriptions particulires pour appareils de laboratoire utiliss pour mixer et agiter (CEI 61010-2-051:2003) Sicherheitsbestimmungen fr elektrische Mess-, Steuer-, Regel- und Laborgerte Teil 2-051: Besondere Anforderungen an Laborgerte zum Mischen und Rhren (IEC 61010-2-051:2003)
12、This European Standard was approved by CENELEC on 2003-10-01. 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 lists and bibliographical
13、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 the responsibility of a CENE
14、LEC 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, Iceland, Ireland, Italy, Lithua
15、nia, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EN 61010-2-50:10023 - - 2 Foreword The text of document 66/325/FDIS, future edition 2 of IEC 61010-2-051, prepared by IEC TC 66, Safety of measuring, control and laboratory equipment, was
16、submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61010-2-051 on 2003-10-01. This European Standard supersedes EN 61010-2-051:1995. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national s
17、tandard or by endorsement (dop) 2004-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2006-10-01 This Part 2-051 is intended to be used in conjunction with EN 61010-1:2001. This Part 2-051 supplements or modifies the corresponding clauses in EN 610
18、10-1 so as to convert it into the European Standard: Safety requirements for laboratory equipment for for mixing and stirring. Where a particular clause or subclause of Part 1 is not mentioned in this part 2, that clause or subclause applies as far as is reasonable. Where this part 2 states “additio
19、n“, “modification“, “replacement“ or “deletion” the relevant text of Part 1 is to be adapted accordingly. In this standard: 1) the following print types are used: - requirements: in roman type; - NOTES: in smaller roman type; - conformity and test: in italic type; - terms used throughout this standa
20、rd which have been defined in Clause 3: SMALL ROMAN CAPITALS; 2) subclauses, figures, tables and notes which are additional to those in Part 1 are numbered starting from 101. _ Endorsement notice The text of the International Standard IEC 61010-2-051:2003 was approved by CENELEC as a European Standa
21、rd without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 61010-2-010 NOTE Harmonized as EN 61010-2-010:2003 (not modified). _ 2egaP 3002:150201016NE Page2 EN610102051:2003 2 160-01-2051 IE2:C(300E) CONTENTS 1 Scope and
22、 object4 2 Normative references .4 3 Terms and definitions .4 4 Tests4 5 Marking and documentation4 6 Protection against electric shock 5 7 Protection against mechanical HAZARDS5 8 Mechanical resistance to shock and impact . 6 9 Protection against the spread of fire .6 10 Equipment temperature limit
23、s and resistance to heat6 11 Protection against HAZARDS from fluids .6 12 Protection against radiation, including laser sources, and against sonic and ultrasonic pressure.7 13 Protection against liberated gases, explosion and implosion.7 14 Components.7 15 Protection by interlocks 7 16 Test and meas
24、urement equipment7Annexes .8 Bibliography8 Pa3eg E3002:150201016N Page3 EN610102051:2003160-01-2051 IE2:C(300E) 3 SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR MEASUREMENT, CONTROL, AND LABORATORY USE Part 2-051: Particular requirements for laboratory equipment for mixing and stirring 1 Scope and
25、 object This clause of Part 1 is applicable except as follows: 1.1 Scope Replacement: Replace the whole text by the following new paragraph: This part of IEC 61010 is applicable to electrically operated laboratory equipment and its accessories for mechanical mixing and stirring, where mechanical ene
26、rgy influences the shape or size or homogeneity of materials and their accessories. Such devices may contain heating elements. NOTE If all or part of the equipment falls within the scope of one or more other part 2 standards of IEC 61010 as well as within the scope of this standard, it will also nee
27、d to meet the requirements of those other part 2 standards. The requirements for equipment which contain heating devices are given in IEC 61010-2-010. 2 Normative references This clause of Part 1 is applicable. 3 Terms and definitions This clause of Part 1 is applicable. 4 Tests This clause of Part
28、1 is applicable. 5 Marking and documentation This clause of Part 1 is applicable except as follows: 5.4.1 General Addition: Number the existing note as Note 1 and add a new Note 101 as follows: NOTE 101 If a HAZARD could be caused by operating a mixer or stirrer intended for use as HAND-HELD EQUIPME
29、NT, there should be a warning statement to that effect. Page4 BS3002:150201016NEPage4 EN610102051:2003 4 160-01-2051 IE2:C(300E) 5.4.4 Equipment operation Additions: Add after item i), a new item aa) as follows: aa) instructions for fixing the stirring vessel if specified and sold as part of a mixin
30、g system, or if otherwise applicable. Add a new second paragraph after the first paragraph as follows: The instructions shall warn against use of the equipment in hazardous atmospheres or with hazardous materials for which the equipment is not designed. Replacement: Replace the original second parag
31、raph (now the third paragraph) by the following: The user shall be made aware that the protection provided by the equipment may be impaired if the equipment is used with accessories not provided or recommended by the manufacturer, or used in a manner not specified by the manufacturer. 6 Protection a
32、gainst electric shock This clause of Part 1 is applicable. 7 Protection against mechanical HAZARDS This clause of Part 1 is applicable except as follows: Replacement: 7.2 Moving parts Replace in line 2 of the second paragraph the words: “for example drilling and mixing equipment” by the following: f
33、or example stirrer shafts and impellers extending downwards into material being stirred. Additional subclauses: 7.2.101 Speed controls If a SINGLE FAULT of an electronic speed control could cause a HAZARD, the equipment shall incorporate means to interrupt power or otherwise prevent the HAZARD. Conf
34、ormity is checked by inspection and test. 7.2.102 Movement during operation Equipment shall not change position during NORMAL USE. Conformity is checked by inspection and test. Equipment which has not moved by more than 5 mm after operation for 10 min is considered to meet the requirement. Pa5eg B30
35、02:150201016NESPage5 EN610102051:2003160-01-2051 IE2:C(300E) 5 7.2.103 Restarting after interruption According to application, a HAZARD may be caused either by re-starting or by not re-starting after interruption of the mixing action. Instructions shall specify whether equipment will re- start or no
36、t re-start, both in the case of MAINS interruption and in the case of a fault or mechanical interruption. NOTE In some cases, it may be appropriate for an audible or visible signal to warn that an interruption has occurred. Conformity is checked by inspection of documentation. 7.2.104 HAZARDS relate
37、d to application Additional HAZARDS may occur with equipment used to mix flammable materials, or where the transfer of mechanical energy to glass apparatus could lead to breakage. Instructions for use shall warn against the use of equipment in such applications unless the equipment incorporates appr
38、opriate safety devices to prevent a HAZARD in SINGLE FAULT CONDITION. Such safety devices shall be independent from control systems. Examples of HAZARDS and appropriate safety devices include the following. a) Where failure of the mixing action could cause a HAZARD, for example in metal-organic reac
39、tions, the safety device shall initiate an alarm signal: 1) if the drive shaft or mixer fails to turn when the mixer is switched on; or 2) when an overload causes the shaft speed to fall below a preset level. NOTE 1 Speed reduction may be caused by a lack of power or by the operation of an automatic
40、 device which reduces the shaft speed in the case of an overload. b) Where a HAZARD could be caused by excessive torque applied to high-viscosity material, for example through glass breakage, the safety device shall initiate an alarm signal if the torque rises above a preset level. NOTE 2 It is reco
41、mmended that safety devices should work according to the principle of rest-current. Conformity is checked by inspection and test. 8 Mechanical resistance to shock and impact This clause of Part 1 is applicable. 9 Protection against the spread of fire This clause of Part 1 is applicable. 10 Equipment
42、 temperature limits and resistance to heat This clause of Part 1 is applicable. 11 Protection against HAZARDS from fluids This clause of Part 1 is applicable except as follows: Pa6eg B3002:150201016NESPage6 EN610102051:2003 6 160-01-2051 IE2:C(300E) Additional subclause: 11.101 Connections for hoses
43、 and pipes Connectors shall be so designed that hoses can be prevented from detaching, for example by means of hose clamps, and that pipes are adequately restrained. Conformity is checked by inspection. 12 Protection against radiation, including laser sources, and against sonic and ultrasonic pressu
44、re This clause of Part 1 is applicable. 13 Protection against liberated gases, explosion and implosion This clause of Part 1 is applicable except as follows: Additional subclause: 13.2.101 Protection against explosion and explosives Equipment designed for protection against explosion or to be used w
45、ith explosives shall, according to the type, the mode of operation and the location, comply with the appropriate requirements of relevant IEC and ISO standards. Conformity is checked as specified in the relevant standards. 14 Components This clause of Part 1 is applicable. 15 Protection by interlock
46、s This clause of Part 1 is applicable. 16 Test and measurement equipment This clause of Part 1 is not applicable. Pa7eg B3002:150201016NESPage7 EN610102051:2003160-01-2051 IE2:C(300E) 7 Annexes The annexes of Part 1 are applicable. Bibliography The bibliography of Part 1 is applicable, except as fol
47、lows. Addition: IEC 61010-2-010:2003, Safety requirements for electrical equipment for measurement, control, and laboratory use Part 2-010: Particular requirements for laboratory equipment for the heating of materials _ Pa8eg B3002:150201016NESPage8 EN610102051:2003blankBS EN 61010-2-051:2003 BSI 38
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