1、BRITISH STANDARD BS EN 60034-6:1994 IEC 34-6:1991 Rotating electrical machines Part 6: Methods of cooling (IC Code) The European Standard EN60034-6:1993 has the status of a British Standard UDC621.313-71BSEN60034-6:1994 This British Standard, having been prepared under thedirectionof the Power Elect
2、ricalEngineering StandardsPolicy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15 February1994 BSI04-2000 The following BSI references relate to the work on this standard: Committee reference PEL/1 Announced in BSI News January1994 ISBN 0 580 22939 4 Coope
3、rating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Italy Belgium Luxembourg Denmark Netherlands Finland Norway France Portugal G
4、ermany Spain Greece Sweden Iceland Switzerland Ireland United Kingdom Amendments issued since publication Amd. No. Date CommentsBSEN60034-6:1994 BSI 04-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN60034-6 3 National annex NA (informative
5、) Committees responsible Inside back coverBSEN60034-6:1994 ii BSI 04-2000 National foreword This British Standard has been prepared under the direction of the Power Electrical Engineering Standards Policy Committee and is the English language version of EN60034-6:1993 Rotating electrical machines Pa
6、rt6: Methods of cooling (IC Code), published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC34-6:1991 published by the International Electrotechnical Commission (IEC). When this European Standard was being prepared an editorial modification wasmade
7、to the English version of IEC34-6:1991. In3.4 the example was replaced by: This British Standard supersedes BS4999-106:1987. The foreword of the European Standard makes reference to the date of withdrawal, dow, of the relevant national standard. In this case the relevant national standard is BS4999-
8、106:1987 which will be withdrawn on1September1994. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obl
9、igations. “Example: Generator IC81W/Exciter IC75W (simplified) Generator IC8A1W7/Exciter IC7A5W7 (complete)” Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theENtitle page, pages2 to16, an inside back cover and a back cover. This standard has been update
10、d (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN60034-6 November1993 UDC621.313-71 Supersedes HD53.6 S1:1977 Descriptors: Rotating electrical machines, cooling
11、 unit, cooling, coolant circuit, classification, designation, code English version Rotating electrical machines Part6: Methods of cooling (IC Code) (IEC34-6:1991) Machines lectriques tournantes Partie6: Modes de refroidissement (Code IC) (CEI34-6:1991) Umlaufende elektrische Maschinen Teil6: Einteil
12、ung der Khlmethoden (IC-Code) (IEC34-6:1991) This European Standard was approved by CENELEC on1993-09-22. 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 alter
13、ation. Up-to-date 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 tr
14、anslation under the 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, Denmark, Finland, France, Germany, Greece, Iceland, Ire
15、land, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart
16、35, B-1050 Brussels 1993 Copyright reserved to CENELEC members Ref. No. EN60034-6:1993EEN60034-6:1993 BSI 04-2000 2 Foreword At the request of CENELEC Technical Committee TC2, Rotating machinery, the text of the International Standard IEC34-6:1991 was submitted to the CENELEC formal vote for accepta
17、nce as a Harmonization Document. The draft was approved by CENELEC as HD53.6 S2 on1993-07-06 and was immediately submitted to a new vote for acceptance as a European Standard. The document, with some editorial modifications prepared by TC2, was approved by CENELEC as EN60034-6 on1993-09-22. This Eur
18、opean Standard supersedes HD53.6 S1:1977. The following dates were fixed: For products which have complied with HD53.6 S1:1977 before1994-09-01 as shown by the manufacturer or by a certification body, this previous standard may continue to apply for production until1999-09-01. Contents Page Foreword
19、 2 Introduction 3 1 Scope 3 2 Definitions 4 3 Designation system 6 4 Characteristic numeral for circuit arrangement 8 5 Characteristic letter for coolant 9 6 Characteristic numeral for method of movement 9 Annex A (informative) Commonly used designations 11 Annex B (informative) Comparison of exampl
20、es from the first and second editions of IEC 34-6 15 Table 1 Circuit arrangement 8 Table 2 Coolant 9 Table 3 Method of movement 10 Table A.1 Examples of open circuits using surrounding or remote medium 12 Table A.2 Examples of primary circuits closed, secondary circuits open using surrounding medium
21、 13 Table A.3 Examples of primary circuits closed, secondary circuits open using remote orsurrounding medium 14 Table B.1 Comparison of examples shown in first edition of IEC 34-6 with those in secondedition 15 Table B.2 Comparison of examples shown in the first edition of IEC 34-6 (Annex A, page 11
22、) with those in the second edition of IEC 34-6 16 latest date of publication of an identical national standard (dop) 1994-09-01 latest date of withdrawal of conflicting national standards (dow) 1994-09-01EN60034-6:1993 BSI 04-2000 3 Introduction In this edition of IEC34-6, the sequence of numerals a
23、nd letters following the Code letters IC is changed. a) New designation system: i) A numeral is placed first, indicating the cooling circuit arrangement, being valid for both primary and secondary circuits. ii) Each circuit is designated by a letter, indicating the coolant, followed by a numeral ind
24、icating the method of movement of the coolant. iii) The letter and numeral for the primary coolant are placed first, then those for the secondary coolant. b) Previous designation system: i) The secondary cooling circuit was designated first, then the primary circuit. ii) Each circuit was designated
25、by a letter, indicating the coolant followed by a numeral, indicating the circuit arrangement, and then another numeral indicating the method of movement of the coolant. This edition also provides for the designation to be simplified, where possible, by the omission of the letter A and of the numera
26、l7 for movement of secondary coolant under certain conditions. In addition, new letters F, S, X and Y are provided and defined; the previous letter E, indicating cooling by evaporation of a liquid, has been omitted. With the introduction of the new designation system, clarifications are required to
27、definitions of open and closed circuit cooling and of dependent and independent components (see clause2). The mode of connecting the supply and the delivery of the appropriate control equipment for circulation components, which were specified in the first edition are no longer taken into account in
28、this second edition. Where the two systems differ, they can be distinguished both in the complete and the simplified code. Examples of cooling according to the first and the second editions are compared inAnnex B. 1 Scope This part of IEC34 identifies the circuit arrangements and the methods of move
29、ment of the coolant in rotating electrical machines, classifies the methods of cooling and gives a designation system for them. The designation of the method of cooling consists of the letters “IC”, followed by numerals and letters representing the circuit arrangement, the coolant and the method of
30、movement of the coolant. A complete designation and a simplified designation are defined. The complete designation system is intended for use mainly when the simplified system is not applicable. The complete designations, as well as the simplified designations, are illustrated in the tables ofAnnex
31、A for some of the most frequently used types of rotating machines, together with sketches of particular examples.EN60034-6:1993 4 BSI 04-2000 2 Definitions For the purpose of this part, the following definitions apply. 2.1 cooling a procedure by means of which heat resulting from losses occurring in
32、 a machine is given up to a primary coolant which may be continuously replaced or may itself be cooled by a secondary coolant in a heat exchanger 2.2 coolant a medium, liquid or gas, by means of which heat is transferred 2.3 primary coolant a medium, liquid or gas which, being at a lower temperature
33、 than a part of a machine and in contact with it, removes heat from that part NOTEA machine may have more than one primary coolant. 2.4 secondary coolant a medium, liquid or gas which, being at a lower temperature than the primary coolant, removes the heat given up by this primary coolant by means o
34、f a heat exchanger or through the external surface of the machine NOTEEach primary coolant in a machine may have its own secondary coolant. 2.5 final coolant the last coolant to which the heat is transferred NOTEIn some machines the final coolant is also the primary coolant. 2.6 surrounding medium t
35、he medium, liquid or gas, in the environment surrounding the machine NOTEThe coolant may be drawn from and/or be discharged to this environment. 2.7 remote medium a medium, liquid or gas, in an environment remote from the machine and from which a coolant is drawn and/or to which it is discharged thr
36、ough inlet and/or outlet pipe or duct, or in which a separate heat exchanger may be installed 2.8 direct cooled winding (inner cooled winding) a winding in which the coolant flows through hollow conductors, tubes or channels which form an integral part of the winding inside the main insulation 2.9 i
37、ndirect cooled winding a winding cooled by any method other than that of2.8 NOTEIn all cases when “indirect” or “direct” is not stated, an indirect cooled winding is implied. 2.10 heat exchanger a component intended to transfer heat from one coolant to another while keeping the two coolants separate
38、EN60034-6:1993 BSI 04-2000 5 2.11 pipe, duct a passage provided to guide the coolant NOTEThe term duct is generally used when a channel passes directly through the floor on which the machine is mounted. The term pipe is used in all other cases where a coolant is guided outside the machine or heat ex
39、changer. 2.12 open circuit a circuit in which the final coolant is drawn directly from the surrounding medium or is drawn from a remote medium, passes over or through the machine or through a heat exchanger, and then returns directly to the surrounding medium or is discharged to a remote medium NOTE
40、The final coolant will always flow in an open circuit (see also2.13). 2.13 closed circuit a circuit in which a coolant is circulated in a closed loop in or through the machine and possibly through a heat exchanger, while heat is transferred from this coolant to the next coolant through the surface o
41、f the machine or in the heat exchanger NOTE 1A general cooling system of a machine may consist of one or more successively acting closed circuits and always a final open circuit. Each of the primary, secondary and/or final coolants may have its own appropriate circuit. NOTE 2The different kinds of c
42、ircuits are stated in clause4 and in the tables ofAnnex A. 2.14 piped or ducted circuit a circuit in which the coolant is guided either by inlet or outlet pipe or duct, or by both inlet and outlet pipe or duct, these serving as separators between the coolant and the surrounding medium NOTEThe circui
43、t may be an open or a closed circuit (see2.12 and2.13). 2.15 stand-by or emergency cooling system a cooling system which is provided in addition to the normal cooling system and which is intended to be used when the normal cooling system is not available 2.16 integral component a component in the co
44、olant circuit which is built into the machine and which can only be replaced by partially dismantling the machine 2.17 machine-mounted component a component in the coolant circuit which is mounted on the machine and forms part of it but which can be replaced without disturbing the main machine 2.18
45、separate component a component in the coolant circuit which is associated with a machine but which is not mounted on or integral with the machine NOTEThis component may be located in the surrounding or a remote medium. 2.19 dependent circulation component a component in the coolant circuit which for
46、 its operation is dependent on (linked with) the rotational speed of the rotor of the main machine, e.g. fan or pump on the shaft of the main machine or fan unit or pump unit driven by the main machine 2.20 independent circulation component a component in the coolant circuit which for its operation
47、is independent of (not linked with) the rotational speed of the rotor of the main machine, e.g. design with its own drive motorEN60034-6:1993 6 BSI 04-2000 3 Designation system The designation used for the method of cooling of a machine consists of letters and numerals as stated below: 3.1 Arrangeme
48、nt of the IC Code The designation system is made up as follows, using the examples IC8A1W7 for complete designation and IC81W for simplified designation: NOTEThe following rule may be applied to distinguish between complete and simplified designations: a complete designation can be recognized by the
49、 presence (after the letter IC) of three or five numerals and letters in the regular sequence = numeral, letter, numeral (letter, numeral). Examples: IC3A1, IC4A1A1 or IC7A1W7; a simplified designation has two or three consecutive numerals, or a letter in the final position. Examples: IC31, IC411 or IC71W. 3.2 Application of designations The simplified designation should preferably be used, i.e. the complete designation system is intended for use mainly when the simplified system is not applicable.EN60034-6:1993 BSI 04-2000 7 3.3 Designati
