1、BRITISH STANDARDBS EN 60027-4:2007Letter symbols to be used in electric technology Part 4: Rotating electric machinesThe European Standard EN 60027-4:2007 has the status of a British StandardICS 01.060; 01.075; 29.160.01g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44
2、g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 60027-4:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2007 BSI 2007ISBN 978 0 580 60036 4National
3、forewordThis British Standard is the UK implementation of EN 60027-4:2007. It is identical to IEC 60027-4:2006. The UK participation in its preparation was entrusted to Technical Committee SS/7, General metrology, quantities, units and symbols.A list of organizations represented on this committee ca
4、n be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd
5、. No. Date CommentsEUROPEAN STANDARD EN 60027-4 NORME EUROPENNE EUROPISCHE NORM October 2007 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1
6、050 Brussels 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60027-4:2007 E ICS 01.060 Supersedes HD 245.4 S1:1987English version Letter symbols to be used in electric technology - Part 4: Rotating electric machines (IEC 6002
7、7-4:2006) Symboles littraux utiliser en lectrotechnique - Partie 4: Machines lectriques tournantes (CEI 60027-4:2006) Formelzeichen fr die Elektrotechnik - Teil 4: Drehende elektrische Maschinen (IEC 60027-4:2006) This European Standard was approved by CENELEC on 2007-10-01. CENELEC members are boun
8、d to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Ce
9、ntral Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same
10、status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway
11、, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 25/330/FDIS, future edition 2 of IEC 60027-4, prepared by IEC TC 25, Quantities and units, and their letter symbols, was submitted to the IEC-CENELEC parallel vote and wa
12、s approved by CENELEC as EN 60027-4 on 2007-10-01. This European Standard supersedes HD 245.4 S1:1987. The following dates were 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) 2008-07-01 latest date b
13、y which the national standards conflicting with the EN have to be withdrawn (dow) 2010-10-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60027-4:2006 was approved by CENELEC as a European Standard without any modification. _ EN 60027-4:2007 2 C
14、ONTENTS 1 Scope.4 2 Normative references .4 3 Currents and related quantities.6 4 Voltages and related quantities 7 5 Powers and related quantities.8 6 Resistances, reactances and impedances 10 7 Times and frequencies .11 8 Geometrical quantities13 9 Factors and ratios 14 10 Mechanical quantities .1
15、5 11 Thermal quantities17 12 Acoustics and vibrations.18 13 Measurement evaluation.18 14 Subscripts 19 EN 60027-4:2007 3 Annex ZA (normative) Normative references to international publications with theircorresponding European publications21LETTER SYMBOLS TO BE USED IN ELECTRICAL TECHNOLOGY Part 4: R
16、otating electric machines 1 Scope This part of IEC 60027 is applicable to rotating electric machines. It gives names and symbols for quantities and units. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the
17、edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60027-1:1992, Letter symbols to be used in electrical technology Part 1: General IEC 60034-1:2004, Rotating electrical machines Part 1: Rating and performance IEC 6003
18、4-2:1972, Rotating electrical machines Part 2: Methods for determining losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles) IEC 60034-4:1985, Rotating electrical machines Part 4: Methods for determining synchronous machine quantities from tests
19、 IEC 60034-9:2003, Rotating electrical machines Part 9: Noise limits IEC 60034-12:2002, Rotating electrical machines Part 12: Starting performance of single-speed three-phase cage induction motors IEC 60034-17:2002, Rotating electrical machines Part 17: Cage induction motors when fed from converters
20、 Application guide IEC 60034-20-1:2002, Rotating electrical machines Part 20-1: Control motors Stepping motors IEC 60034-26:2006, Rotating electrical machines Part 26: Effects of unbalanced voltages on the performance of three-phase cage induction motors IEC 60050-101:1998, International Electrotech
21、nical Vocabulary (IEV) Part 101: Mathematics IEC 60050-111:1996, International Electrotechnical Vocabulary (IEV) Part 111: Physics and chemistry IEC 60050-121:1998, International Electrotechnical Vocabulary (IEV) Part 121: Electro-magnetism EN 60027-4:2007 4 IEC 60050-131:2002, International Electro
22、technical Vocabulary (IEV) Part 131: Circuit theory IEC 60050-151:2001, International Electrotechnical Vocabulary (IEV) Part 151: Electrical and magnetic devices IEC 60050-411:1996, International Electrotechnical Vocabulary (IEV) Part 411: Rotating machines IEC 61986:2002, Rotating electrical machin
23、es Equivalent loading and superposition techniques Indirect testing to determine temperature rise EN 60027-4:2007 5 3 Currents and related quantities Quantities Units Itemnumber Entrynumber in IEV NameofquantityChiefsymbolReserve symbolRemarks Unit,coherentwith the SIOther unitsRemarks NameSymbolNam
24、eSymbol101 rated currentIratINampere A102 411-48-24 transientcurrentI kI scampere A103 411-48-25 sub-transientcurrentI kI scampere A104 411-48-20 steady short-circuitcurrentIkIscampere A105 411-48-23 maximumaperiodicshort-circuitcurrentIkIscampere A106 411-48-21 initialperiodicshort-circuitcurrentIk
25、0Isc,0ampere A107 411-46-03 electricloading Aampere per metre A/mEN 60027-4:2007 6 4 Voltages and related quantities Quantities Units Itemnumber Entrynumber in IEV NameofquantityChiefsymbolReserve symbolRemarks Unit,coherentwith the SIOther unitsRemarks NameSymbolNameSymbol201 rated voltage UratUNIn
26、 the case ofa polyphasemachine,ratUistheline-to-line voltage.voltV202 121-11-28 induced voltage Ug60034-20-1 voltV203 thharmonicofthe voltage UvoltV204 voltage atno-load U060034-2 In the case ofa polyphasemachine,0Uisthe line-to-line voltage.voltV205 411-54-06 excitation systemceiling voltage;total
27、excitationvoltageUe,max60034-2 voltVEN 60027-4:2007 7 5 Powers and related quantities Quantities Units Itemnumber Entrynumber in IEV NameofquantityChiefsymbolReserve symbolRemarks Unit,coherentwith the SIOther unitsRemarks NameSymbolNameSymbol301 rated power PratPNwatt W302 rated apparentpower SratS
28、Nvoltam-pere VA303 411-51-05 inputpower Pinwatt W304 411-51-04 outputpower PoutP60034-20-1 wattW305 mechanicalpower Pmec60034-2 wattW306 power dissipated byheatPdwatt W307 electricpower,excitation excludedPel60034-2 wattW308 air-gap powerPgPwatt W309 apparentpowerwith locked rotor Slr60034-12 voltam
29、-pere VA310 brush lossesPb60034-2 wattW311 excitation circuitlossesPex60034-2 wattW312 core lossesPFe60034-2 wattW313 friction and windage lossesPfw60034-2 wattW314 load-independentlossesPc60034-2 wattW315 load lossesPl60034-2 wattW316 additionalload lossesPla60034-2 wattWEN 60027-4:2007 8 Quantitie
30、s Units Itemnumber Entrynumber in IEV NameofquantityChiefsymbolReserve symbolRemarks Unit,coherentwith the SIOther unitsRemarks NameSymbolNameSymbol317 residuallossesPlr60034-2 wattW318 short-circuitlossesPkPsc60034-2 wattW319 411-53-09 power losses;totallossPt60034-2 wattW320 winding lossesPw60034-
31、2 wisusuallyreplaced by a,f,e,sor r watt W321 131-11-46 power factor60034-2 Ratio ofactive and apparentpower (including harmonicsin the case ofnon-sinusoidaltime dependence)one 1322 131-11-49 active factorcos60034-2 Ratio ofactive power and the square rootofthe sumofactive and fundamentalreactive po
32、werssquared (excluding harmonics)one 1323 151-15-25 efficiency 60034-2 one 1per cent%EN 60027-4:2007 9 6 Resistances,reactances and impedances Quantities Units Itemnumber Entrynumber in IEV NameofquantityChiefsymbolReserve symbolRemarks Unit,coherentwith the SIOther unitsRemarks NameSymbolNameSymbol
33、401 411-50-20 zero sequence resistance R(0)Rh60034-4 ohm404 411-50-18 positive sequence resistance R(1)Rp60034-4 ohm407 411-50-19 negative sequence resistance R(2)Rn60034-4 ohm411 411-50-07 direct-axissynchronousreactanceXd60034-4 ohm413 411-50-08 quadrature-axissynchronousreactance Xq60034-4 ohm415
34、 411-50-09 direct-axistransientreactanceX d60034-4 ohm417 411-50-10 quadrature-axistransientreactance X q60034-4 ohm419 411-50-11 direct-axissubtransientreactanceX d60034-4 ohm421 411-50-12 quadrature-axissubtransientreactance X q60034-4 ohm423 411-50-14 positive sequence reactance X(1)Xp60034-4 ohm
35、425 411-50-15 negative sequence reactance X(2)Xn60034-4 ohm427 411-50-16 zero sequence reactance X(0)Xh60034-4 ohm429 leakage reactance X61986 ohm430 reference impedance ZrefZNUZI=ph,Nrefph,NohmEN 60027-4:2007 10 7 Times and frequencies Quantities Units Itemnumber Entrynumber in IEV NameofquantityCh
36、iefsymbolReserve symbolRemarks Unit,coherentwith the SIOther unitsRemarks NameSymbolNameSymbol501 fundamentalfrequency 1f60034-17 hertzHz502 pulse frequency fp60034-17 hertzHz503 rotationalfrequency n60027-1 In the field ofrotatingmachines,the unit“revolutionsper minute”isgenerallyused.one per secon
37、d -1srevolu-tionsper minute r/min504 slip s60027-1 one 1per cent%505 time ofone load cycle Tc60034-1 second s506 rise time tr60034-17 second s507 411-48-26 aperiodictime constantaTasecond s508 411-48-27 direct-axistransientopen-circuittime constant d0Td0second s509 411-48-28 direct-axistransientshor
38、t-circuittime constant dTdsecond s510 411-48-29 direct-axissub-transientopen-circuittime constant d0Td0second s511 411-48-30 direct-axissub-transientshort-circuittime constant dTdsecond s512 411-48-32 quadrature-axistransientopen-circuitconstant q0Tq0second sEN 60027-4:2007 11 Quantities Units Itemn
39、umber Entrynumber in IEV NameofquantityChiefsymbolReserve symbolRemarks Unit,coherentwith the SIOther unitsRemarks NameSymbolNameSymbol513 411-48-33 quadrature-axistransientshort-circuittime constant qTqsecond s514 411-48-34 quadrature-axissub-transientopen-circuittime constant q0Tq0second s515 411-
40、48-35 quadrature-axissub-transientshort-circuittime constant qTqsecond s516 rated acceleration time jTjsecond s517 starting time;accelerating time tD60034-1 second s518 time ofelectricbraking tF60034-1 second s519 operation time atconstantloadtP60034-1 second s520 time de-energised and atresttR60034
41、-1 second s521 time under overload tS60034-1 second s522 operation time atno-load tV60034-1 second s523 reference angular frequency refradian per second rad/s524 angular frequency ofrotor fieldrradian per second rad/s525 angular frequency ofstator field sradian per second rad/sEN 60027-4:2007 12 8 G
42、eometricalquantities Quantities Units Itemnumber Entrynumber in IEV NameofquantityChiefsymbolReserve symbolRemarks Unit,coherentwith the SIOther unitsRemarks NameSymbolNameSymbol601 shaftheightofthe machine Hmetrem602 altitude ofoperating site H60034-1 metre m603 altitude oftestsite HT60034-1 metre
43、m604 number ofphase elementsmmr,msone 1605 number ofpole pairsp60034-2 60034-12 one 1606 number ofslotsper pole and phase elementqqr, qsone 1607 number ofslotsQQr, Qs2Qpmq=one 1608 411-38-34 commutator pitch expressed innumber ofsegmentpitchesYcone 1609 411-38-30 coilspan expressed in number ofslotp
44、itchesYQone 1610 totalnumber ofconductorszone 1611 number ofconductorsin a slotzQone 1612 411-38-25 MODslotpitch Qr, sQdQ=metrem613 411-40-18 main length ofair-gap g00metrem614 411-38-29 pole pitch pd p=p2metremEN 60027-4:2007 13 9 Factors and ratios Quantities Units Itemnumber Entrynumber in IEV Na
45、meofquantityChiefsymbolReserve symbolRemarks Unit,coherentwith the SIOther unitsRemarks NameSymbolNameSymbol701 totalleakage factor k=r1(1)(1one 1702 rotor leakage factor rk,rLL=,rrrone 1703 stator leakage factor sk,sLL=,sssone 1704 411-38-37 distribution factor;spread factorkdone 1705 101-14-56 for
46、mfactor kf60034-1 one 1706 411-38-38 pitch factor;chording factorkpone 1707 411-38-41 skewfactorksqone 1708 411-38-39 winding factor kwkN=wone 1709 ripple factorqi60034-1 one 1710 unbalance factor for the voltagesfu60034-26 one 1711 weighting factor for the thnharmonicofthe voltage one 1712 ratio of
47、auxiliary voltage tomainvoltage 61986 one 1713 reciprocalofthe temperature coefficientofresistance at0 Ck60034-1 one 1714 temperature correction factork60034-2 one 1EN 60027-4:2007 14 10MechanicalquantitiesQuantities Units Itemnumber Entrynumber in IEV NameofquantityChiefsymbolReserve symbolRemarks
48、Unit,coherentwith the SIOther unitsRemarks NameSymbolNameSymbol801 viscousdamping factor Dv60034-20-1 newton metresecond Nms802 stored-energy constantHsecond s803 111-13-22 momentofinertia J60034-12 60034-20-1 61986 kilo-gramme metresquared 2kgm804 externalmomentofinertia Jext60034-1 kilo-gramme met
49、resquared 2kgm805 motor momentofinertia JM60034-1 kilo-gramme metresquared 2kgm806 momentofinertia with respectto the rotationalaxisofthe rotor Jr60034-20-1 kilo-gramme metresquared 2kgm807 111-13-27 torque TM60034-20-1 60034-2 61986 newton metreNm808 pull-outtorque;breakdown torque TbMb60034-12 newton metreNm809 torque correction TcMc60034-2 newton metreNm810 continuouss
