Bsi bs en 60034 4 1995 scan

S T D - B S I BS EN büû34-4-ENGL 1995 = L b b b ï OBb7532 188 W BS EN BRITISH STANDARD 6ûû34-4:1996 Rotating electrical machines Part Methods for determining synchronous machine quantities from tests The European StanBritish Standard EN 60034-4 : 1995 has the status of a UDC 621.313: 621.317.3 I C s 29.160.00 ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 A National foreword This Pan of BS 4999 has been prepared under the direction of the Power Electrical Engineering Standards Committee and supersedes BS 4296 : 1968 which is withdrawn ~n 1g95 the European Committee for Electrotechnical Standardization (CENELEC) accepted IEC 344 : 1985, modified, as a European Standard EN 600344 : 1995 As a consequence of implementing the European Standard this British Standard is renumbered as Bs EN 60034-4 and any reference to BS 4999 : Part 104 should be read a reference to BS EN 600344 Terminology and conventions The text of the international standard has been approved as suitable for publication as a British Standard without deviation Some terminology and certain conventions are not identical with those used in Bntish Standards Wherever page numbercare quoted in the text, they are IEC page numbers A Cross-references Internationil slnndird Cormpnding British Standard IEC 34-2 : 1972 BS 4999 General requirements for rotating electrical machines Part 102 : 1987 Methods for determining losses and efficiency from tests (excluding machines for traction vehicles) (Ident ica I) BS 89 : 1977 Specification for direct acting indicating electrical meacunng instruments and their accessories (Identical) IEC51 : 1973 Additional information In A2 an invitation isgiven to submit information to the 'Secretanat ofSub-Committee 2G' Such information should be forwarded to the secretary of BSI Technical Committee PEL/ for consideration by the committee for submission to the IEC Compliance with a British Standard does not of itself confer immunity from legal obligations ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 EUROPEAN STANDARD EN 6OW-4 NORME EXJR0PEE”E EUROPNORM June 1995 UDC 621.313621.317.3 ICs 29.l;so.oo A Supersedes HD 63.4 S2 : 1W Descriptors: Rotating machines, synchronous machines, test methods English version Rotating electrical machines Part4 Methods for determining synchronous machine quantities fkom tests (iEC 344 : 1985, modified) Drehende elektrische Maschinen Teil 4: Verfahren zur Ermittlung der KenngröiCen von Synchro’ endurchMessungen (IEC 344 : 1986, modiüziert) This Eurbpean Standard was approved by CENELEC on 1996-05-15 CENELEC members are bound to comply with the CENKENELEC Internai Regulations which stipuìate the conàitions for giving this European Standard the status of a national standard without any aiteration Uptodate lists and bibliographicid references concerning such nationai standards may be obtained on application to the Central Secretariat or to any CENELEC member This European Standard exists in three officiai vemions (English, Fkench, German) A version in any other language made by translation under the responsibility of a CENELEC member into its own ianguage and notified to the Centrai Secrariat has the same status as the official versions CENELEC members are the national electmtechnicid committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireiand, Italy, Luxembourg, Netherlands, Norway, P o w , Spain, Sweden, Switzerland and Unitecl Kingdom ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Machines électriques toumantes Partie Méthodes pour ia détemination partir d’essais des grandeurs des machines synchrones (CEI 34-4 : 1985, modiđée) CENELEC European Committee for Electrotechnic Standanhation Comité Européen de Nonnalisation Electrotechnique Europäisches Komitee für Elehotechnische Normung Centraì Secretariat: rue de Stassart 36, B-1050Brussels O 1996 Copyright reserved to CENELEC members Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Ref No EN 60034-4 : 1996 E Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 ~~ ~ A STDWBSI ES EN b003'i-'i-ENGL 1975 m LbZ'ibbS b 5 997 I Page EN 60034-4: 1995 Foreword ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - The text of the intemational Standard IEC 34-4 : 1985, prepared by SC 2G,Test methods and procedures, of iEC TC 2, Rotating machinery, together with common modificatons prepared by the Technical Committee CENELEC "C 2, was approved by CENELEC as HD 53.4 S2 on 198806-28 This Harmonization Document was submitted to the formai vote for conversion into a European Standard and was approved by CENELEC as EN 60034-4 on 19950515 The following date was nXed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1996-07-15 Annexes designated 'nonnative' are part of the body of the standard in this standard, annex ZA is normatjive Annex ZA has been added by CENELEC Endorsement notice The text of the internationai S t a n M IEC 34-4 : 1985 was approved by CENELEC as a European Standard with agreed common modifications as given below Common Modifications 48 Line-to-line sustained short-circuit test Figure 13 and Figure 14 have to be interchanged 64 Line-to-line and to neutrd sustained Short-Circuit test F'igure 13 and Figure 14 have to be interchanged 55 Determination of quantities from the line-to-line and to neutral sustained shûrt-clldt test in the formula repiace factor '3' by factor ' (3 ' to read the first formula as follows: Delete Appendix A 'Unconfirmed test methods for determining synchronous machine quantities fmm tests' Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 STD-BSI BS EN b0034-4-ENGL 1995 m lbZLibb9 ODb753b m BS 4999: Part 104: 1988 CONTENTS National foreword Committees responsible Papc Inside front cover Back cover Methods SECTION ONE- SCOPEAND OBJECT Clause scope Object 5 SECTION Two - GENERAL General - SECTION THREETERMINOLOGY AND METHODS OF DETERMINATION Direct-axis synchronous reactance A', Short-circuit ratio KE Quadrature-axis synchronous reactance X, Direct-axis transient reactance XA Direct-axis subtransient reactance X i Quadrature-axis subtransient reactance Xi 10 Negative-sequence reactance X2 11 Negative-sequence resistance R2 12 Zero-sequence reactance A', 13 Zero-sequence resistance Ro 14 Potier reactance A',, 15 Armature and excitation winding direct-current resistance Ra and R f 16 Positive-sequence armature winding resistance R I 17 Direct-axis transient open-circuit time constant 18 Direct-axis transient short-circuit time Constant Td 19 Direct-axis subtransient short-circuit time constant rd 20 Armature short-circuit time constant ta 21 Acceleration time T~ 22 Stored energy constant H 23 Rated excitation current If, 24 Rated voltage regulation AL',, 7 8 9 9 ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ tio 10 10 10 10 io 11 11 11 11 12 12 - SECTION FOUR DESCRIPTION OF THE TESTS AND Dti'l'l'HMINATION OF MACHINE QUANTITIES FROM THESE TESTS 25 No-load saturation test 26 Sustained three-phase short-circuit test 27 Determination of quantities from the no-load saturation and sustained three-phase shortcircuit characteristics 28 Overexcitation test at zero power-factor 29 Determination of the excitation current corresponding to the rated voltage and rated armature current at zero power-factor (overexcitation) 30 Determination of Potier reactance from the no-load and sustained three-phase short-circuit characteristics and the excitation current corresponding to the rated voltage and rated armature current at zero power-factor (overexcited) ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 12 13 13 14 15 16 STDiBSI BS EN b0034-4-ENGL L775 D Lb24bb9 08L7537 7bT kl BS 4999 : Part 104 : 1988 i Determination of the rated excitation current by the Potier diagram 32 Determination of the rated excitation current by the ASA diagram 33 Determination of the rated excitation current by the Swedish diagram 34 Negative excitation tcst 35 Dctermination of Xq from the negative excitation test 36 Low slip test 37 Determination of X, from the low slip test 38 On-load test measuring the load angle 39 Determination of Xq from thc on-load test measuring the load angle 40 Sudden three-phase short-circuit test 41 Determination of quantities from the sudden three-phase short-circuit test 42 Voltage recovery test 43 Determination of quantities from the voltage recovery test 44 Applied voltage test with the rotor in direct and quadrature axis positions with respect to the armature winding field axis 28 45 Determination of quantities from the applied voltage test with the rotor in direct and quadrature axis positions with respect to the armature winding field axis 29 16 18 19 20 20 20 21 22 23 23 26 27 28 46 Applied voltage test with the rotor in any arbitrary position 47 Determination of quantities from the applied voltage test with the rotor in any arbitrary position 48 Line-to-line sustained short-circuit test 49 Determination of quantities from the line-to-line sustained short-circuit test 29 30 30 31 Ncgative-phase sequence test Dctcrmination of quantities from the negative-phase sequence test Single-phase voltagc application to the three-phase test Determination of quantities from the single-phase voltage application to the three-phase test 54 Line-to-line and to neutral sustained short-circuit test 55 Determination of quantities from thc line-to-linc and to ncutral sustained short-circuit test 31 32 32 50 51 52 53 ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ 32 33 33 56 Dircct-current winding resistance measurements by the voltmeter and ammeter method and by the bridgc mcthod 57 Determination of winding d.c resistance from the direct-current winding resistance measurements by the voltmeter and ammeter and by the bridge methods 34 34 58 Field currcnt decay test with the armature winding open-circuited 59 Determination of T;,, from the field current decay test with the armature winding open- circuitcd 60 Field currcnt decay test with the armature winding short-circuited 61 Determination of T; from the field current decay test with the armature winding shortcircuitcd 62 Suspended rotor oscillation test 63 Determination of TJ and if from suspended rotor oscillation test 64 Auxiliary pendulum swing test 65 Determination of T~ and H from the auxiliary pendulum swing test 66 No-load retardation test 67 Determination of TJ and H from the no-load retardation test 68 On-load retardation test of mechanically coupled machines with the synchronous machine operating as a motor 35 36 36 36 36 36 37 37 37 38 38 ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 ~ ~ STD-BSI BS EN b003q-4-ENGL 1995 ~ l b i i b b ö b bTb m BS 4999 :Part 04:1988 69 Determination of zJ and H of mechanically coupled machines from the on-load retardation test with the synchronous machine operating as a motor 70 Acceleration after a load drop test with the machine operating as a generator 38 39 71 Determination of zJ and H of mechanically coupled machines from the acceleration after a load drop test with the machine operating as a generator 39 72 Determination of quantities by calculations using known test quantities TABLEI Annex ZA (normative) 39 41 42a A ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - A ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy 3Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 = ~ STD-BSI BS EN b003'4-4-ENGL 1995 Lb2'4bbS 08b7539 BS 4999: Part 104: 1988 British Standard General requirements for rotating electrical machines Part 104 Methods of test for determining synchronous machine quantities ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - SECTION ONE - SCOPE AND OBJECT' scope This standard applies to three-phase synchronous machines of kVA rating and larger with rated frequency of not more than 400 Hz and not less than 15 Hz The test methods are not intended to apply to special synchronous machines such as pennanentmagnet field machines, inductor type machines, etc While the tests also apply in general to brushless machines, certain variations exist and special precautions should be taken Object The object of this standard is to establish methods for determining characteristic quantities of three-phase synchronous machines from tests It is not intended that this standard should be interpreted as requiring the carrying out of any or all of the tests described therein on any given machine The particular tests to be camed out shall be subject to a special agreement ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ SECTION TWO - GENERAL Cenerai Tests for determining synchronous machine quantities should be conducted on a completely sound machine, all the devices for automatic regulation being switched off Unless otherwise stated, the tests are conducted at the rated speed of rotation 3.1 Indicating measuring instruments and their accessories, such as measuring transformers, shunts and bridges used during tests, unless otherwise stated, should have an accuracy class not above 1.0 (I EC Publication : Direct Acting Indicating Analogue Electrical Measuring Instruments and their Accessories) The instruments used for determining d.c resistances should have an accuracy class not above 0.5 It is not intended at this stage to specify an accuracy class for the oscillographic measuring equipment This should, however, be chosen, having due regard to the rated frequency of the machine to be tested, so that the readings are taken in a linear portion of the vibrator amplitude against frequency characteristic The measurement of the speed of rotation, of synchronous machines may be conducted by means of a stroboscopic method or by using tachometers (mechanical or electrical) Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Previous page is blank Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 [IEC page 151 - ~ ~ ~ S T D - B S I BS EN b0034-q-ENGL A775 D l b b b 08b7540 254 BS 4999: Part 104: 1988 Instead of measuring the speed of rotation, it is permissible to measure frequency by means of a frequency meter when the machine is running synchronously with any other machine or running on its own 3.2 The temperature of the windings is measured in those tests when the quantities to be determined depend on it or when knowledge of it is required by the safety considerations of the machine during tests In cases where transient temperatures might exceed the safe values, it is recommended that the tests be started only after the machine has been run at no-load with normal cooling or has beexi at rest for a period to ensure low starting temperature, and the temperatures should be carefully monitored or pre-determined so that the test may be discontinued before the temperature becomes excessive 3.3 During the test, the machine winding connection, as a rule, should be as for normal working The determination of all quantities is made considering star connection of the armature winding (unless special connections such as o p n delta are specified) If the armature winding is actually delta connected, the values of the quantities obtained in accordance with this standard correspond to an equivalent star connected winding 3.4 All the quantities and characteristics should be designated in per unit values considering rated values of the voltage (U,.,), and the apparent power (S,)as basic ones In this case basic current will be: ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - and basic impedance: ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ The intermediate calculations, if it is convenient, may be performed in physical values with subsequent conversion to the quantity in per unit value It is recommended to express time in seconds In the calculations of characteristics, and when drawing diagrams, excitation current corresponding to the rated voltage on the no-load curve is taken as the basic value of the excitation current If a machine has several rated values, those taken for the basic values should be stated Unless otherwise stated the above-mentioned system is accepted in this standard Small letters designate thc quantities in per unit values, and capital letters designate them in physical quant ities 3.5 In the formulaegiven in this standard for determining synchronous machine reactances the positive sequence armaturc resistance, unless otherwise stated, is considered to be negligible When the positive sequence armature resistance constitutes more than 0.2 of the measured reactance the formulae must be considered as approximate 3.6 The definitions of the majority of quantities and their experimental methods of determination, as given in this standard correspond to the widely accepted two-axis theory of synchronous machines with approximate representation of ail circuits additional to the field winding, and stationary circuits relative to it by two equivalent circuits, one along the direct axis and the other along the quadrature axis neglecting armature resistance or taking it into consideration only approximately [IEC page I71 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 BS4999:Part 104: 1988 STD-BSI BS EN b0034-9-ENGL 1995 H 1b24bb9 08t7541 1’l)ti As a consequence of this approximate machine representation, three reactances (synchronous, transient and sub-transient) and two time constants (transient and sub-transient) are considered in this standard for transient phenomena studies along the direct axis, two reactances (synchronous and sub-transient) and one time constant (sub-transient) along the quadrature axis, and the armature short-circuit time constant These time constants are based on the assumption of an exponential decrease of the particular components of quantities involved (currents, voltages, etc.) If the plot of the measured component under consideration does not decrease as a pure exponential, as in the case, for example, of a solid rotor machine, the time constant should normally be interpreted as the time required for the component to decrease to l/e = 0.368 of its initial value Exponential decay curves corresponding to these time constants should be considered as equivalent curves replacing the actual measured ones 3.7 Synchronous machine quantities vary with saturation of the magnetic circuits In practical calculations both saturated and unsaturated values are used In this standard, unless otherwise stated, the “saturated value” of reactances and resistances will be taken as the rated (armature) voltage value of the quantity, and their “unsaturated value” will be taken as the rated (armature) current value, except synchronous reactance which is not defined as saturated The rated (armature) voltage value of a quantity corresponds to the magnetic condition of the machine during sudden shon circuit of the armature winding from no-load rated voltage operation, the machine running at rated speed The rated (armature) current value of a quantity corresponds to the condition in which the fundamental a.c component of armature current which determines this particular quantity is equal to the rated current SECTION THREE ｗｗｗ．ｂｚｆｘｗ．ｃｏｍ - TERMINOLOGY AND METHODS OF DETERMINATION Direct-axis synchronous reactance X, 4.1 The direct-axis synchronous reactance X, corresponding to the unsaturated state is determined (see Clause 27) from the no-load saturation (see Sub-clause25.1) and sustained three-phase short circuit (see Sub-clause 26.1) characteristics Short-circuit ratio K, The ratio of the field current for rated armature voltage on open-circuit to the field current for rated armature current on sustained symmetrical short circuit, both with the machine running at rated speed 5.1 The short-circuit ratio is determined (see Sub-clause 27.1) from the no-load saturation (see Subclause 25.1) and sustained three-phase shon circuit (see Sub-clause 26.1) characteristics Quadrature-axis synchronous reactance X, The quotient of the sustained value of that fundamental a.c component of armature voltage which is produced by the total quadrature-axis armature flux due to quadrature axis armature current, and the value of the fundamental a.c component of this current, the machine running at rated speed Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 [IEC page 191 ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - The quotient of the sustained value of that fundamental a.c component of armature voltage which is produced by the total direct-axis armature flux due to direct-axis armature current, and the value of the fundamental a.c component of this current, the machine running at rated speed 59 Determination of r i o from the field current decay test with the armature winding open-circuited Direct-axis transient open-circuit time constant (see Clause 17) is determined from the field current decay test as the time required for the voltage difference mentioned in Clause 58 to decrease to 1/c 0.368 of its initial value 60 Field current decay test with the armature winding short-circuited The field current decay test with the armature winding short-circuited is conducted with the machine driven by a prime-mover at rated speed and with rated armature current flowing, and suddenly short-circuitingthe excitation winding The limitation of the duration and the value of the supply source short-circuit current is made in accordance with Clause 58 An oscillogram is taken of any line current and of the excitation current or slip-ring voltage The difference between the transient current obtained from the oscillogram and the current due to the residual voltage is plotted against time on a semi-log scale 61 Determination of rd from the field current decay test with the armature winding short-circuited Direct-axis transient short-circuit time constant (see Clause 18) from the field decay test is determined as the time required for the current difference mentioned in Clause 60 to decrease to 116 = 0.368 of its initial value 62 Suspended rotor oscillation test ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - To perform this test, the rotor is suspended on one filament or two parallel filaments in such a way as to have its shaft in a vertical position Turning the rotor produces oscillationsabout the shaft axis The time required to make several oscillations is recorded and an average time of one cycle of oscillation is calculated With one filament suspension, the test is performed twice, with the rotor itself and the rotor together with a flywheel or a pulley, acting as a known flywheel The unidirectional displacement angle for one-filament suspension should be not more than 45' and for two-filament suspension not more than lo" 63 Determination of TJ and H from suspended rotor oscillation test The acceleration time (see Clause 21) and stored energy constant (see Clause 22) from the string suspended rotor oscillation test are calculated using the formulae: *n The formulae are exprcswd in International System Units J - moment of inertia in kilo.gram meire squared - !? angular speed in radians per second 30 rated speed of rotation in revolutions per minute P,, rated active power in kilowatts Y,, = rated apparent power in kilovoltamperes ro R = [IECpage 771 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy 36 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 L b b b ỵ b75iL 528 BS 4999 :Part : 1988 The moment of inertia, when the rotor is suspended by one filament, is calculated using the formula: and when it is suspended by two filaments using thc Iormula: J= T2.a2 L - mg kgm2 (4N2 where: Jp = known moment of inertia of pulley, in kilogram metre squared g acceleration of free fall, in metres per second squared T = time of one cycle or rotor swing, in seconds Tp = time of one cycle of rotor swing together with pulley or flywheel, in seconds distance between the points of suspension, in metres (I = iength of suspension, in metres L m = rotor mass, in kilograms - 64 Auxiliary pendulum swing test To perform this test, an auxiliary pendulum (a lever and a mass at the end) is attached in a plane at right angies to the shaft of the machine, placed horizontally The mass of the pendulum, which is known, should be as small as possible Instead of an auxiliary pendulum, a known mass may be attached at the circumference of the rotor or pulley The auxiliary pendulum is displaced at an ande about 5’ from its steady position The time of one swing is measured This test is recommended for machines provided with ball or roller bearings 65 Determination of ‘TJ and H from the auxiliary pendulum swing test The acceleration time (see Clause 1) and stored energy constant (see Clause 22) from the auxiliary pendulum swing test are calculated by the formula, as shown in Clause 63 where : mp mass of the auxiliary pendulum, in kilograms L = the distance from the centre of the shaft to the centre of gravity ofthe pendulum or to the centre of gravity of the mass attached at circumference of rotor or pulley, in metres acceleration of free fall, in metres per second squared g Tp time of one cycle of swing, in seconds - - 66 No-load retardation test The no-load retardation test is conducted when there is no additional flywheel mass on the shaft of the machine under test The machine is excited from a separate source and the excitation is unchanged during the test The machine under test is brought up to overspeed by increasing the supply frequency or by means of a prime-mover provided with a clutch; then the supply is disconnected Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy 37 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 [IEC page 791 ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - The moment of inertia is calculated using the formula: ~~ L b V b b î 08b7572 ôbrt I BS 4999 :Part 104 : 1988 This test consists of measuring the retardation time At when the machine is slowing down between two pre-determined speeds with difference Ao, say from 1.10 to 0.9 per unit or from 1.05 to 0.95 per unit 67 Determination of fJ and H from the no-load retardation test Acceleration time of the machine (see Clause 21) and stored energy constant (see Clause 22) from the no-load retardation test are determined using the formulae: At prnech+ PFe Ao pn TJ = wn on H=-.- S Pmech+PFe Ao S sn where: mcchanical losses at raced speed, in kilowatts core losses at rated speed and corresponding value of test voltage, in kilowatts P-h = Pk = P,, rated active power, in kilowatts rated angular speed, in radians per second = rated apparent power in kilovoltamperes = = o, S,, 68 On-load retardation test of mechanically coupled machines with the synchronous m a c h e operating as a motor The test is conducted with the machine operating as a motor and supplying a load The speed of rotation of the unit before disconnectingfrom the network should be equal to the rated speed The power input before disconnecting should be not less than 0.6 of the rated power; the power-factor should be close to unity The excitation of the machine during the test is unchanged After disconnectingthe supply source, the change of speed of the unit during the first few seconds is determined The speed-time curve is plotted and a tangent to the initial point of the curve is drawn This tangent is used to determine the change in speed Am for the time interval At 69 Determination of rJand H of mechanically coupled machines from the on-load retardation test with the synchronous machine operating as a motor TJ = w n At - PI - (PSI, AU where: - S pn on Ar H=-.- + PC") PI - V s t r Ao + peu) S sn P,m + f, = power supplied to the motor immediately before disconnection from the network in kiiowatts armature winding losses (stray and copper) immediately before disconnection, in kilowatts (0" = rated angular speed, in radians per second PI This method of determination is not very precise [IEC page 811 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy ~ _ _ 38 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - The acceleration time (see Clause 21) and stored energy constant (see Clause 22) of the machine together with the load from the on-load retardation test with the machine operating as a motor are determined by the formulae: ~ L b b b ỵ 08b7573 T U BC 4999: Part 104: 1988 70 Acceleration after a load drop test with the machine operating as a generator The test is conducted with the machine operating as a generator driven by a prime-mover Before the test, the generator load is fixed at O to 0.2 of the rated load (the power-factor is fixed close to unity), the speed regulator of the prime-mover is taken out of service The excitation of the generator during the test should be unchanged After a sudden disconnection of the generator from the network the change of speed with time curve is determined At a speed of about 1.O7 to 1.1 rated value, the regulation of prime mover is put in service or steam is cut o& The acceleration c u v e is plotted A tangent is drawn to the acceleration curve at the point corresponding to the rated speeà of the machine, and the speed change for the time interval is determined Determination of t anä H of mechanically coupled machines from the acceleration after a load drop test with the machine operating as generator The acceleration time of the machine and its prime mover (see Clause 21) and stored energy constant (see Clause 22) from the acceleration after the load drop test with the machine operating as a generator are determined using the formulae: Pl At O, HE-.-.2 Am S, S when Pl is the power supplied by the generator immediately before disconnection from the network in kilowatts This method of determination is not very precise 72 Determination of quantities by calculations using known test quantities The quantities x i , xd, rioand rd are connected with each other by the following relation: I # xd 'Fd = xd This relation is used for determination of x i or other quantities # ' %do r i or rio from the known values of xd and two 72.1 The negative sequence reactance X, (seeClause 10) from the known test of Xi (see Clause 8) and $ (see Clause 9) is calculated by the formula: = xd+x$ 72.2 The positive sequence resistance ofthe armature winding (see Clause 16) is determined from the known 3PR, losses (Peu)and stray losses in the armature winding (PSU)measured at rated current in accordance with IEC Publication 34-2: Rotating Electrical Machines, Part 2: Methods for Determining Losses and Efficiency of Rotating Electrical Machinery from Tests (Excluding Machines for Traction Vehicles) using the formula: Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy 39 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 IïEC page 831 ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - x, lb21ibb9 ûöb7571i b This value of R I cornsponds to the winding temperature at which the loss measurements were conducted 72:3 Armature short-circuit time constant (see Clause 20) at rated frequency&, from the known test values of X2 (see Clause 10) and R, (see Clause 15) is calculated using the formula: - Use a saturated value of xz ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Noil [IEC page 851 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy 40 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 = L b b b 08b7575 573 = BS4999: Part 104: 1988 TABLE I Test methods and cross-refirencetable Quantity xd Definitions (clauses and sub-clauses) Name of test No-load saturation and thm-phase 4, 27 Test methods (claws) Saturated or unsaturatcd Value 25.26 Unsaturated Remark short-circuit tcst No-load saturation and thm-phase short-circuit test 25,26 Kc 5, 27.1 x9 6, 35 Negative excitation test 34 37 Low slip test 36 saturated unsaturated Unsaturated 39 On-load test by measuring the load 38 saturated ~ ~~~~ Prtferred anpie ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Ad Sudden three-phase short-circuit test 7, 41 saturated x2 unsaturated 43 I Voltage ncovery test 42 Unsaturated 45 Applied voltage test with the rotor in the direct end quadrature axis positions with respect to the armature winding field axis 44 Unsaturated (Saturated) 41 Applied voltage test wiỵh the rotor in any arbitrary position 46 Unsaturated (saturated) 9, 45.1 Applied voltage test with the rotor in the direct and quadrature axis positions with respect to the armature winding field axis 44 Unsaturated (saturated) 41.1 Applied voltage test with the rotor in any arbitrary position 46 Unsaturated (Saturated) 10.49 Line-to-line sustained short-circuit 48 Unsaturated Line-to-line sustained short-circuit 48 Unsaturated Negative-phase sequence 50 Unsaturated Single-phase voltage application to the threc plases 52 Unsaturated Line-to-line and to neutral sustained short-circuit 54 Unsaturated I I, 49.1 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Il mf- 40 8, 41.1 ~ R2 42 Voltage recovery tcst 43 40 - ~~ ~~ 41 I Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 k f d Preferred " ' (clauses and Name of test sub-clauxs) Single-phase voltage application to the three phases Line-to-line and to neutral sustained short-circuit 55.I (clauses) VdW Unsaturated 54 Unsaturated 25, 26 28 Ammeter-voltmeteror bridge 56 IS, 57, 57 Ammeter-voltmeter or bridge 56 16 Positive sequence armature winding mistance 72.2 17, 59 Field current decay with armature winding open 58 43.2 Voltage recovery 42 IS 41.2 Sudden three-phase short-circuit 40 61 Field current decay with armature winding short-circuited 60 19,41.3 Sudden three-phase short-circuit 15, 57, 57 ~ ~~ ' 71 22.63 65 67 69 See IEC Publication 34 preferred 140 ~~ Suspended rotor oscillation Auxiliary pendulum swing No-load retardation On-load retardation - the synchronous machine operating as a motor Acceleration after a load drop the machine operating as a generator - Suspended rotor oscillation Auxiliary pendulum swing No-load retardation On-load retardation the synchronous machine operating as a motor - - 71 Acceleration aRer a load drop the machine opcrating as a generator 23 23.1 Direct measurement 62 64 66 68 70 62 64 66 68 70 Phasor diagram: Potier ASA Swedish 31 32 33 24 Direct measurement 24.1 By diagram from the no-load saturation characteristicand known ih 25.31 32 33 ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy L 40 ~~ 21.63 65 67 69 I ~~ 20 ~ saturated or unsaturated No-load saturation, sustained three-phase short-circuit and over-excitation test at zero power-factor 14,30 [IEC page 891 methods ~~~ 42 Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 l b b b ỵ 08b7577 b EN 60034-4 :1996 h e x ZA (normative) A ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Normative references to international publications with their corresponding European publications This European Standard i n c o ~ ~ ~ rby a kdated s or unàatd reference, pmvisions from other publications These normative references are cited at the appropriate piaces in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision For undated references the latest edition of the publication referred to appiies (inciuding amendments) NOTE When an international publication has been modified by common modificationk, indicated by (mod), the relevant E N D applies PubUraiion Yeu IEC 61 series Dimi acting indicating analogue elscEricnl-measuring inscrumats and their accessories litle ENmD Yeu EN 60051 Series le tn le Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 ì t b b b ỵ 08b7578 I Publicationsreferred to Sec national foreword * * tn ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 BS 4999 : Part 104 : 1988 IEC 34-4 1985 This British Standard, having been prepared under the direction of the Power Electrical Engineering Standards Committee, was published under the authority of the Board of BSI and comes into effect on 29 February 1988 @British Standards Institution, 1988 ISBN O 580 16378 The following BSI references relate to the work on this standard: Committee reference PELI1 Draft for comment 86/31743 DC British Standards Institution Incorporatedby Royal Charter, BSI is the independent national body for the preparation of British Standards It is the UK member of the International Organization for Standardization and UK sponsor of the British National Committee of the International ElectrotechnicalCommission In addition to the preparationand promulgation of standards, BSI offers specialist services including the provision of information through the BSI Library and Standardline Database; Technical Help to Exporters; and other services Advice can be obtained from the Enquiry Section, BSI, Milton Keynes MK14 6LE telephone 0908 221166, telex 825777 Copyright Users of British Standards are reminded that copyright subsists in all BSI publications No part of this publication may be reproduced in any form without the prior permission in writing of BSI This does not preclude the free use, in the course of implementing the standard of necessary details such as symbols and size, type or grade designations Enquiries should be addressed to the Publications Manager, BSI, Linford Wood Milton Keynes MK14 6LE The number for telephone enquiries is 0908 220022 and for telex 825777 Contract requirements A British Standard does not purport to include a l l the necessary provisions of a contract Users of British Standards are responsible for their correct application Ravirion of British Standards British Standards are revised, when necessary, by the issue either of amendments or of revised editions It is important that users of British Standards should ascertain that they are in possession of the latest amondmentsor ditions Automatic updatingservice BSI provides an economic, individual and automatic standards updating service called PLUS Details are available from BSI Enquiry Section a t Milton Keynes, telephone 0908 221166, telex 825777 Information on all BSI publications is in the BSI Catalogue, supplemented each month by BSI News which is available to subscribing members of BSI and gives details of new publications, revisions, amendments and withdrawn standards Any person who, when making use of a British Standard, encounters an inaccuracy or ambiguity, i s requested to notify BSI without delay in order that the matter may be investigatedand appropriate action taken Committeesresponsible for this British Standard The preparation of this British Standard was entrusted by the Power Electrical Engineering Standards Committee (PEL/-) to Technical Committee P E W , upon which the following bodies were represented Association of Consulting Engineers Association of Electrical Machinery Trades Association of Supervisory and Executive Engineers British Coal Bureau of Engineer Surveyors ERA Technology Ltd Amtl No AMD wvs Date of issue E- 1 Electricity Supply Industry in Englandand Wales Engineer Surveyors Section of the A.S.T.M.S Engineering Equipment and Materials Users Association Health and Safety Executive Ministry of Defence Power Generation Association (BEAMA Ltd) Rotating Electrical Machines Association (BEAMA Ltd) South of Scotland Electricity Board UK Offshore Operators Association Ltd Text affected - - British Standards Institution Park Street London W1A 28s Telephone 01-629 9000 Telex 266933 8802 -10 PEU1 ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 D L b b b 08b7580 9311 W AMD 8876 Amendment No published and effective from 16 November 1996 to BS 4999 :Part 104 : 1988 General requirements for rotating electrical machines Part 104 Methods of test for determining synchronous machine quantities NOTE The European Committee for Electrotechnical Sỵan-tion (CENELEC) has accepted IEC 34-4 : 1985, together with common modifications, as a European Standard designated EN 600344: 1996 This amendment implements EN 60034-4 : lM5 as a British Standard Implementation of European Standard Nationai foreword Delete the existing pamgraph and substitute the foliowing in 1995 the European Committee for Electrotechnical S t a n e o n (CENELEC) accepted IEC 34-4: 1985, modified, as a European Standard EN 60034-4 : 1995 As a consequence of implementing the European Standard this British Standard is renumbered as BS EN 60034-4 and any reference to BS 4999 : Part 104 should be read as a reference to BS EN 6ûû34-4 AMD 887SmTovember 1995 _- -_ _ - -_-_ New EN title page and foreword Immediately after the national foreword, insert the attached new EN title page and foreword page 951I Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Product code 00595605 ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 PEL12 lib2Libb9 OBb7581 877 ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - 3s EN 50034-4 : 1995 Rotating electrical machines Part Methods for determining synchronous machine quantities from tests The European Standard EN 60034-4 : 1995 has the status of a British Standard ULK 621 313: 621.317.3 ICs2916000 Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 EN 6ûû34-4 EUROPEAN STANDARD NORME EUROPÉXNNE EUROP&CHE NORM June 1995 UDC 621.313621.317.3 Supersedes HD 53.4 52 : 1988 ICs 29.160.00 Descriptors: Rotating machines, synchronous machines, test methods Enghsh version Rotating electrical machines Part4: Methods for determining synchronous machine quantities fYom tests (IEC 344 : 1985, modified) ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Machines électriques toumantes Partie 4: Méthodes pour la déterminalion partir d'essais des grandeurs des machines synchrones (CE1 344 : 1985, modifiée) Drehende elektrische Maschinen Teil Verfahren zur Ermittlung der KenngröBen von Synchronmaschinen durch Messungen (IEC 34-4 : 1985, m-ert) This European Standard was approved by CENELEC on 19950515 CENELEC members are bound to comply with the CENKENELEC internai Regulations which stipuiate the conditions for giving this European Standard the status of a national standard without any alteration Uptodate lists and bibliographical references concerning such nationai standaràs may be obtained on application to the Central Secretariat or to any CENELEC member This European Standard exists in three oficial versions (English, French, German) A version in any other language made by translation 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, ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung Central Secretariat: rue de Stassart 36,B-1050Brussels O 1995 Copyright reserved to CENELEC members Ref No EN 600344 : 1995 E Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 Page EN 60034-4: 1995 Foreword The text of the International Standard IEC 344 : 1985, prepared by SC 2G, Test methods and procedures, of E C TC 2, Rotating machinery, together with common modifications prepared by the Technical Committee CENELEC TC 2, was approved by CENELEC as HD 53.4 S2 on 19884%-28 This Harmonization Document was submitted to the formal vote for conversion into a European Standard and was approved by CENELEC as EN 600344 on 19950515 The foliowing date was fixed: ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 1W7-15 Annexes designated ‘normative’are part of the body of the sỵandard In this standard,annex ZA is normative Annex ZA has been added by CENELEC Endorsement notice The text of the Inteniationaì Standard iEC 34-4 : 1985 was approved by CENELEC as a European Standard with agreed common modifications as given below Common Modifications 48 54 55 Line-to-iine sustained short-circuit test Figure 13 and Figure 14 have to be interchanged Line-to-he and to neutral sustained short-circuit test Figure 13 and Figure 14 have to be interchanged Determination of quantities from the line-to-line and to neutraì sustained short-circuit test In the formula replace factor ‘3’ by factor ‘ @ ’ to read the first formula as follows: Delete Appendix A ‘Unconfirmed test methods for detennining synchronous machine quantities from tests’ Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295 5öb Page EN 60034-4 : 1995 Annex ZA (normative) Normative references to international publications with their corresponding European publications This European Standard incorporates by dated or undated reference, provisions h m other publications These nonnative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard onìy when incorporated in it by amendment or revision For undated references the latest edition of the publication referred to applies (including amendments) NOTE When an intemational publication has been modfied by common modifications,indicated by (mod),the relevant EN/HD applies Pubìication Year iEC 51 series D i m t acting indicating analogue eìectrical-measuring instruments and their accessories lìtie ENMD Year EN 60051 Series ``,,,``,```,`,```,,``,,``,`-`-`,,`,,`,`,,` - Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Document provided by IHS Licensee=Bureau Veritas/5959906001, 11/04/2004 00:21:07 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295