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1、BRITISH STANDARD CONFIRMED SEPTEMBER 1985 BS 5000-3: 1980 Incorporating Amendment No. 1 Specification for Rotating electrical machines of particular types or for particular applications Part 3: Generators to be driven by reciprocating internal combustion engines UDC 621.31313:621.313.12843:621.432 L
2、icensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 12:36:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5000-3:1980 This British Standard, having been prepared under the direction of the Power Electrical Engineering Standards Committee, was published under the authority of the Executive Board a
3、nd comes into effect on 31 December 1980 BSI 02-1999 The following BSI references relate to the work on this standard: Committee reference PEL/1 Draft for comment 78/32564 DC ISBN 0 580 11689 1 Cooperating organizations The Power Electrical Engineering Standards Committee, under whose direction this
4、 British Standard was prepared, consists of representatives from the following: Associated Offices Technical Committee Association of Short Circuit Testing Authorities British Electrical and Allied Manufacturers Association (BEAMA) British Railways Board British Steel Corporation* Department of Ener
5、gy (Electricity) Electrical Contractors Association Electrical Contractors Association of Scotland Electricity Supply Industry in England and Wales* ERA Technology Ltd.* Institute of Purchasing and Supply Institution of Electrical Engineers Ministry of Defence* National Coal Board* National Economic
6、 Development Office The organizations marked with an asterisk in the above list, together with the following, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: Association of Consulting Engineers Association of Electrical Machinery Trades A
7、ssociation of Manufacturers Allied to the Electrical and Electronic Industry (BEAMA) Association of Supervisory and Executive Engineers British Gear Manufacturers Association British Internal Combustion Engine Manufacturers Association Bureau of Engineer Surveyors Engineer Surveyors Section of the A
8、STMS Engineering Equipment Users Association Lloyds Register of Shipping London Transport Executive Machine Tool Industry Research Association Power Generation Association (BEAMA) Rotating Electrical Machines Association (BEAMA) South of Scotland Electricity Board Amendments issued since publication
9、 Amd. No.Date of issueComments 5629July 1988Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 12:36:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5000-3:1980 BSI 02-1999i Contents Page Cooperating organizations Inside front cover Foreword ii 1 Scope 1 2
10、References 1 3 Definitions 1 4 General requirements 1 5 Rating and temperature rise 1 6 Voltage regulation 2 7 Imposed vibration, torsional and linear 2 8 Noise levels 2 9 Rating plate marking 2 Figure 1 Limits of linear vibration 3 Publications referred to Inside back cover Licensed Copy: sheffield
11、un sheffieldun, na, Mon Dec 04 12:36:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5000-3:1980 ii BSI 02-1999 Foreword This British Standard, which has been prepared under the direction of the Power Electrical Engineering Standards Committee, forms a Part of BS 5000 which, together with BS 4999 “
12、General requirements for rotating electrical machines”, will eventually contain a comprehensive series of British Standards for rotating electrical machines. A list of the contents of BS 5000 showing all the Parts envisaged in the foreseeable future is given in the general introduction and index whi
13、ch will be brought up to date as new Parts are published. The contents of BS 4999 are given in Part 0 of that standard. At the date of publication of this standard there is no corresponding international standard. A British Standard does not purport to include all the necessary provisions of a contr
14、act. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 4, an inside back cov
15、er and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 12:36:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 50
16、00-3:1980 BSI 02-19991 1 Scope This Part of this British Standard specifies requirements for generators, together with their exciters, to be driven by reciprocating internal combustion engines. These generators have maximum continuous rating, with outputs greater than 0.75 kW or kVA per 1 000 r/min,
17、 and are of the following types. a) Salient pole alternating current generators. b) Cylindrical rotor (distributed field) alternating current generators. c) Direct current generators. Limits are specified for torsional and linear vibration levels which may be imposed by the engine on the generator.
18、This Part does not cover generators intended for use in ships or traction vehicles, or turbine type machines. 2 References The titles of the publications referred to in this standard are listed on the inside back cover. 3 Definitions For the purposes of this Part of this British Standard, the defini
19、tions given in BS 4999-101 apply, together with the following. 3.1 inertia torque the opposing torque exerted by a mass when being accelerated 3.2 forced frequency method a tabulation method, taking damping into account, to determine forced vibration amplitudes at non-resonant frequencies 3.3 first
20、major order the predominant frequency of the engine torque reaction divided by the rotational frequency 3.4 supplier of the set the engine manufacturer or the manufacturer of the driven machinery or a third contractor. If a purchaser buys an engine from one manufacturer and the driven machinery from
21、 another, the purchaser is regarded as the supplier of the set to himself 4 General requirements Generators shall comply with the appropriate requirements of the following Parts of BS 4999, except where such Parts are modified or extended in this standard. Part 101: Specification for rating and perf
22、ormance (see also clause 5 of this Part in connection with duty and rating and with service and operating conditions and clause 9 of this Part in connection with rating plate marking); Part 102: Methods for determining losses and efficiency from tests (excluding machines for traction vehicles); Part
23、 105: Classification of degrees of protection provided by enclosures for rotating machinery; Part 106: Classification of methods of cooling Part 108: Specification for terminal markings and direction of rotation; Part 109: Specification for noise levels, including test methods (see also clause 8 of
24、this Part); Part 112: Specification for starting performance of single-speed three-phase cage induction motors; Part 140: Specification for voltage regulation and parallel operation of a.c synchronous generators (see also clause 6 of this Part); Part 142: Specification for mechanical performance: vi
25、bration (see also clause 7 of this Part); Part 143: Specification for tests. 5 Rating and temperature rise Generators shall have maximum continuous rating as defined in 5.1 of BS 4999-101. In addition, generators shall be capable of delivering 110 % rated output at rated voltage and rated speed for
26、one hour during any period of twelve consecutive hours running, provided that the inlet coolant temperature during the overload period is below that corresponding to the maximum inlet coolant temperature for which the machine has been rated, by not less than 13 K. No temperature rise limits are spec
27、ified for this overload condition. NOTEAn engine complying with the requirements of BS 5514-1 is permitted to develop, for limited periods and with a limited frequency, an output in excess of its rated output. The excess is customarily 10 % of the rated output, for periods and frequencies which vary
28、 with the application and conditions. However, a generator with maximum continuous rating (as defined in 5.1 of BS 4999-101) has no specified sustained overload capacity. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 12:36:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5000-3:1980 2 BSI 0
29、2-1999 The reference temperature for the BS 5514-1 engine overload is 27 C, and with this inlet coolant temperature a generator rated for the general service and operating conditions defined in BS 4999-101, is permitted an additional 10 K temperature rise. At 110 % load, however, a normally rated ge
30、nerator may exceed its full load temperature rises by considerably more than this 10 K margin and it should therefore be recognized that, even with the 13 K reduction in ambient temperature specified in this clause, any significant usage of this 10 % overload capacity will shorten the insulation lif
31、e of the machine. 6 Voltage regulation 6.1 Steady state condition. Provided that the speed governing of the engine complies with the requirements for the class of governing specified in accordance with BS 5514-4, the requirements of any steady state voltage regulation grade specified in accordance w
32、ith BS 4999-140, shall be met. 6.2 Transient conditions. If transient voltage performance is of importance, it shall be the responsibility of the supplier of the set to specify all the requirements to the generator manufacturer so that consideration may be given to the effects of engine speed variat
33、ions. 7 Imposed vibration, torsional and linear 7.1 General. The values in 7.2 and 7.3 have been specified with the intention of defining maximum vibratory conditions for the machine and any attached ancillary equipment, e.g. integral cooling fans, terminal boxes and other attachments to the generat
34、or frame. These values are inclusive of the limits specified in BS 4999-142 for self induced vibration. 7.2 Torsional vibration. Generator rotors shall be capable of continuously withstanding vibratory inertia torque amplitudes of 2.0 T for d.c. generators or 2.5 T for a.c. generators (where T is th
35、e rated full load torque), over the speed range from 95 % to 110 % of the rated speed, and 6.0 T when passing through critical speeds below 95 % of the rated speed. The total inertia torque acting on the rotor shall be taken into consideration in the speed range from 95 % to 110 % of the rated speed
36、. NOTEIn the case of generating sets driven by reciprocating internal combustion engines, the supplier of the set is responsible for ensuring that the torsional vibration conditions of the complete dynamic system are satisfactory. BS 5514-5 details definitions and general requirements. To allow the
37、calculations to be completed, the generator manufacturer should make available to the supplier of the set adequate and accurate drawings and data, including moments of inertia, relating to the rotating parts of the generator and any integral excitation equipment. Calculations should be based on the
38、maximum rating of the set in kW, including the overload condition specified in clause 5. Where two or more generators are driven from one engine, each generator should be considered separately in relation to its own maximum rating. The calculations should be based on the forced frequency method, tak
39、ing account of all significant harmonic exciting torques and their relative phase relationships, together with torsional system damping where applicable. Alternatively, the total vibratory torque may be calculated as the arithmetical sum of the vibratory torque due to any resonant order and the non-
40、resonant contributions of all other significant orders, including the first major order. Where the calculations show the results to be only marginally acceptable, confirmatory measurements should be taken under running conditions. 7.3 Linear vibration. Generators shall be capable of continuously wit
41、hstanding linear vibration levels with amplitudes of 0.25 mm between 5 Hz and 8 Hz and velocities of 9.0 mm/s r.m.s. between 8 Hz and 200 Hz when measured at any point directly on the carcass or main frame of the machine and on separate pedestal bearing blocks, if fitted. These limits refer only to
42、the predominant frequency of vibration of any complex wave form. These vibration levels are shown in Figure 1 in terms of amplitude and frequency. 7.4 Electro-mechanical frequency of vibration. In special cases, particularly with gas and dual-fuel engines, it may be necessary to calculate the electr
43、o-mechanical resonant frequency of vibration of the combined set to ensure stable operation in the presence of possible disturbing frequencies from, for example, the mounting system, fuel. system or torque variations from the engine or load. In such cases, when specified at the time of the enquiry o
44、r order, it is the responsibility of the supplier of the set to ensure that this work is carried out. The generator manufacturer shall provide the necessary information relating to the generator. 8 Noise levels The noise limits specified in BS 4999-109 shall apply only if similar limits have been se
45、t for the engine, and the generator manufacturer has been advised by the purchaser at the time of the enquiry or order. 9 Rating plate marking To comply with the requirements of clause 27, item 13), of BS 4999-101, the rating plate shall carry the number of this standard, i.e. BS 5000/3. Licensed Co
46、py: sheffieldun sheffieldun, na, Mon Dec 04 12:36:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5000-3:1980 BSI 02-19993 Figure 1 Limits of linear vibration Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 12:36:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldu
47、n sheffieldun, na, Mon Dec 04 12:36:41 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5000-3:1980 BSI 02-1999 Publications referred to BS 4999, General requirements for rotating electrical machines. BS 4999-0, General introduction and index1). BS 4999-101, Specification for rating and performance. BS
48、 4999-102, Methods for determining losses and efficiency from tests (excluding machines for traction vehicles). BS 4999-105, Classification of degrees of protection provided by enclosures for rotating machinery. BS 4999-106, Classification of methods of cooling. BS 4999-108, Specification for termin
49、al markings and direction of rotation. BS 4999-109, Specification for noise levels, including test methods. BS 4999-112, Specification for starting performance of single-speed three-phase cage induction motors. BS 4999-140, Specification for voltage regulation and parallel operation of a.c. synchronous generators. BS 4999-142, Specification for mechanical performance: vibration. BS 4999-143, Specification for tests. BS 5514, Reciprocating internal combustion engines: Performance. BS 5514-1, Specification for standard reference conditions