1、BRITISH STANDARDConfirmed August 1984BS 5000-11: 1973Incorporating Amendment Nos. 1, 2, 3 and 4Specification for Rotating electrical machines of particular types or for particular applications Part 11: Small-power electric motors and generatorsUDC 621.313.13: 621.313.1.026.443g49g50g3g38g50g51g60g44
2、g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS 5000-11:1973This British Standard, having been approved by the Electrical Industry Standards Committee, was published un
3、der the authority of the Executive Board on 13 November 1973 BSI 14 September 2005First published as BS 170 June 1921First revision June 1939Second revision July 1962Third revision as BS 5000-11 November 1973The following BSI references relate to the work on this British Standard:Committee reference
4、 ELE/1/13Draft for comment 71/27730ISBN 0 580 07505 2Co-operating organizationsThe Electrical Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: A
5、ssociated Offices Technical Committee Department of Trade and IndustryAssociation of Consulting Engineers* Electric Cable Makers ConfederationAssociation of Manufacturers of Domestic Electrical Contractors Association Electrical Appliances (Incorporated)*Association of Mining Electrical Electrical C
6、ontractors Association of Scotlandand Mechanical Engineers Electrical Research Association*Association of Supervisory and Executive Electricity Council, the Central Electricity Engineers* Generating Board and the Area Boards inBritish Electrical and Allied Manufacturers England and Wales* Associatio
7、n Electronic Engineering AssociationBritish Electrotechnical Approvals Board for Engineering Equipment Users Association*Household Equipment Institution of Electrical EngineersBritish Radio Equipment Manufacturers Institution of Electrical and ElectronicsAssociation Technician EngineersBritish Railw
8、ays Board* Lighting Industry Federation LimitedBritish Steel Corporation Ministry of DefenceCrown Agents for Oversea Governments and National Physical Laboratory (Department ofAdministrations Trade and Industry)Department of Employment (HM factory Oil Companies Materials Association* Inspectorate) P
9、ost OfficeDepartment of the Environment* South of Scotland Electricity Board*The Government department and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this
10、 British Standard.Association of Electrical Machinery Trades Ministry of Defence (Army Department)Engineer Surveyors Association Ministry of Defence (Navy Department)Lloyds Register of Shipping Machine Tool Trades AssociationLondon Transport Executive Rotating Electrical Machines AssociationAmendmen
11、ts issued since publicationAmd. No. Date of issue Comments2280 May 19772717 August 19785634 July 198815899 September 2005 Indicated by a sideline in the marginBS 5000-11:1973 BSI 14 September 2005iContentsPageCo-operating organizations Inside front coverForeword iiiSection 1. Construction and electr
12、ical performance1Scope 12 Definitions 13 General 14Ratings 25 General conditions 36 Limits of temperature rise and methods of temperature measurement 47 Momentary overloads 78 Commutators, brush gear and slip rings 79 Full load efficiency 810 Power factor 811 Tests 812 Application of tests 913 Tempe
13、rature rise tests 914 Torque tests 915 Commutation test 916 High voltage tests 1017 Test certificates 1018 Tolerances on characteristics of machines 1019 Terminal and lead markings 1020 Radio interference 1021 Information to be given on the machine 1122 Rating of capacitors 12Section 2. Metric dimen
14、sions23 Frame designation 1324 Letter symbols 1325 Dimensions, tolerances and limits 1326 Access for flange-fitting bolts 1327 Electric connections 13Appendix A Notes on the torque characteristics and application of induction motors 17Appendix B Information to be given with enquiry and order 18Appen
15、dix C Terms and definitions 20Figure 1 Symbols for dimensions of foot-mounted machines without flanges 15Figure 2 Symbols for dimensions of flange-mounted machines and foot-mounted machines provided with a flange 15Publications referred to Inside back coverBS 5000-11:1973ii BSI 14 September 2005Page
16、Table 1 Limit of permissible temperature rise in C 6Table 2 Momentary overload for motors 8Table 3 Test voltages 10Table 4 Tolerances 11Table 5 Torque characteristics 17Table 6 Suffix letters 13Table 7 Letter symbols to indicate dimensions 14Table 8 Standard dimensions for foot-mounted or resilient
17、base-mounted machines 16Table 9 Standards dimensions for flange-mounted machines 16BS 5000-11:1973 BSI 14 September 2005iiiForewordThis British Standard revises and supersedes the 1962 edition of BS 170 and supersedes BS 2048-1:1961, which is withdrawn. It is primarily intended to cover light type s
18、ingle-phase electric motors but may also be used for 3-phase or d.c. machines, particularly where mechanical interchangeability of machines suitable for different supplies is of importance.Text deletedThis publication does not purport to include all the necessary provisions of a contract. Users are
19、responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 21 and a back cover.The BSI copyright notice displayed in this
20、document indicates when the document was last issued.ivblankBS 5000-11:1973 BSI 14 September 20051Section 1. Construction and electrical performance1 ScopeSection 1 of this British Standard specifies the performance of a.c., d.c. and universal rotating electrical machines of any continuous rated out
21、put up to and including 0.75 kW or kVA per 1 000 rev/min (synchronous speed for induction machines), and rated voltages up to 250 V d.c. or single-phase a.c., and up to 650 V three-phase a.c. It also applies to short-time rated machines having an equivalent continuous rating to the above. It is prim
22、arily intended to cover light type single-phase electric motors but may also be used for three-phase of d.c. machines, particularly where mechanical interchangeability of machines suitable for different supplies is of importance.Section 2 specifies a range of metric dimensions affecting interchangea
23、bility. These dimensions are optional whereas the requirements of Section 1 are mandatory. It is therefore important when enquiring or ordering to state whether the machine is to comply with the dimensional requirements of Section 2 in addition to the constructional and electrical performance requir
24、ements of Section 1.It is primarily intended to cover light type single-phase electric motors but may also be used for three-phase or d.c. machines, particularly where mechanical interchangeability of machines suitable for different supplies is of importance.NOTE 1 It is recognized that in practice
25、there is some overlap between this standard and BS EN 50347 and that therefore certain ratings of machines may be constructed to comply with either one or the other but not necessarily with both.NOTE 2 The titles of the publications referred to are listed on the inside back cover.2 DefinitionsFor th
26、e purposes of this British Standard the definitions given in Appendix C apply.3 General3.1 Types of machineThe principal types of machine covered by this standard are:3.2 Degrees of protection by enclosureTypes of protective enclosure selected from BS EN 60034-5 are:1)1) Single-phase a.c. machinessp
27、lit-phasecapacitor start, induction runcapacitor start, capacitor run (two value capacitor)capacitor start and run (single value capacitor permanently in circuit)shaded poleseries commutator2) Polyphase a.c. machinescage induction3) D.C. machinescompoundshuntseriesseparately excited4) A.C./D.C. mach
28、inesuniversal series commutator1)For some types of totally enclosed machine it may be necessary for Category IP 54 to be used.(IP 00) open or non-protected (IP 45) hose proof(IP 20) protected (IPW 44) weather proof1)(IP 22) drip proof (IP 58) submersible(IP 44) totally enclosed1)(BS EN 60079-7) flam
29、eproofBS 5000-11:19732 BSI 14 September 2005Section 13.3 Methods of coolingMethods of cooling selected from BS EN 60034-6 are:2)3.4 DimensionsA machine complying with the requirements of this specification is not restricted as to dimensions. If, however, one of the standard frame sizes specified in
30、Clauses 23 to 27 is quoted on the nameplate then the machine shall comply with all the dimensional requirements of those clauses for the particular size of machine and method of mounting.3.5 Information to be given with enquiry and orderThe information to be supplied by the purchaser with his enquir
31、y or order is given in Appendix B.4 Ratings4.1 GeneralThe assignment of rating shall be made by the manufacturer to indicate the capabilities of the machine and marked on the rating plate3)in accordance with Clause 21. Since electrical machines have a time-rate of temperature rise, and since the ris
32、e of temperature in accordance with this standard is limited, a qualifying term shall be included in the rating to give an indication of the duration for which the machine may run at the assigned values while complying with this standard. Where a machine is manufactured for general purposes, it shal
33、l be capable of supplying its rating indefinitely and the qualifying terms shall signify this.4.2 Classes of ratingIn assigning the rating, the manufacturer shall select one of the following rating classes:1) Continuous rating (CR): A statement of the load and conditions, assigned to the machines by
34、 the manufacturer, at which the machine may be operated for an unlimited period while complying with the requirements of this standard.2) Short-time rating (STR): A statement of the load time and conditions, assigned to the machine by the manufacturer, at which the machine may be operated for a limi
35、ted period, starting at the ambient temperature, while complying with the requirements of this standard. The preferred times for short-time ratings are 5, 10, 15, 30 and 60 minutes. The value of short-time shall be marked on the rating plate.4.3 Output ratings4.3.1 D.C. generators. The rated output
36、of d.c. generators shall be expressed in watts (W)4).4.3.2 A.C. generators. The rated output of a.c. generators shall be either the apparent electric power expressed in volt amperes (VA)4)together with the power factor; or the real power expressed in watts (W)4).4.3.3 Motors. The rated output availa
37、ble at the motor shaft shall be expressed in watts (W)4).4.4 Motors for multiple ratings4.4.1 Multi-speed motors. For multi-speed motors, a definite rating shall be assigned for each speed.2)Such machines are used for driving fans, the air from which is drawn over the frame, thus cooling it.IC 00 fr
38、ee convectionIC 01 self ventilatedIC 00 41 totally enclosed free convectionIC 01 41 totally enclosed fan ventilatedIC 08 drip proof, air over motor2)IC 08 41 totally enclosed, air over motor2)3)When the motors are used for driving fans and are mounted in the air-stream, the output rating should be a
39、greed between the manufacturer and the purchaser. The letter symbols A.O.M. (air over motor) should be added to the rating referred to on the rating plate.4)Large outputs may be expressed in kW or kVA.BS 5000-11:1973 BSI 14 September 20053Section 14.4.2 Variable-speed motors. For variable-speed moto
40、rs, definite ratings shall be assigned for the highest and lowest speed of the range specified. If ratings at intermediate speeds are important they shall be specified.4.5 Voltage ratings4.5.1 Rated voltage. The rated voltage is the voltage between the line terminals of the machine at rated output.4
41、.5.2 Generators rated for specified operation over a limited range of voltage. The requirements for a.c. and d.c. generators are described separately below.4.5.2.1 D.C. generators. For d.c. generators rated to run over a limited range5)of voltage the rated output and current shall relate to the high
42、est voltage of the range, unless otherwise specified.4.5.2.2 A.C. generators. For a.c. generators rated to operate over a limited range5)of voltage the rated output and power factor shall relate to any voltage within the range unless otherwise specified.4.5.3 Motors rated for specified operation ove
43、r a limited range of voltage. The requirements for a.c. and d.c. motors are specified separately below.4.5.3.1 D.C. motors. For d.c. motors rated to operate over a limited range5)of voltage, the rated output shall relate to the mean voltage of the range unless otherwise specified.4.5.3.2 A.C. motors
44、. For a.c. motors rated to operate over a limited range5)of voltage, the rated output shall relate to the mean voltage in the range.5 General conditions5.1 Preferred voltagesThe preferred voltages are:5.2 Preferred frequencyThe preferred frequency for alternating current machines is 50 Hz.5.3 Prefer
45、red number of phases for alternating current machinesThe preferred number of phases for alternating current machines is either one or three.5.4 Machines for non-preferred voltages, frequency and number of phasesMachines for use on systems employing voltages, frequencies and phases other than those s
46、pecified in 5.1, 5.2 and 5.3, but which comply in all other respects with the requirements of this standard, come within the scope of this standard.5.5 Waveform (a.c. machines)The voltage waveform of an a.c. generator shall be virtually sinusoidal.NOTE Where the waveform is of importance the deviati
47、on from a true sine wave and the load at which this should occur should be the subject of agreement between the manufacturer and the purchaser.A.C. motors shall be capable of working on a supply having a waveform which is virtually sinusoidal.NOTE Where the waveform is not sinusoidal (e.g. where a m
48、otor in fed from a static inverter) the performance of the motor should be the subject of agreement between the manufacturer and the purchaser.5)A limited voltage range is to be understood as being a range (maximum minus minimum) of the order of 10 % of the mean voltage.for d.c. machines 100250 Vfor
49、 a.c. machinessingle-phase 240 Vpolyphase 415 VBS 5000-11:19734 BSI 14 September 2005Section 15.6 Preferred outputsThe preferred outputs in W for all types of motors are:2.5, 4, 6, 10, 16, 25, 40, 60, 80, 90, 100, 120, 180, 250, 370, 550, 750, 1 100. 1 500 and 2 200.NOTE Large outputs can be expressed in kW.5.7 Preferred speedsThe preferred speeds are approximately 950, 1 425 and 2 850 rev/min except for universal and series commutators and series d.c. machines.NOTE In the case of induction machines the preferred speeds given above refer to machin
