1、= 3404583 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM 0057bql1 O50 = EN 60146-1-3 February 1993 UDC 621.314.21 : 621.315.59 : 621.318 Descriptors: Electronics, convertors, semiconductor convertors, tranformers, reactors, characteristics, specifications, test English version Semiconductor conve
2、rtors General requirements and line commutated convertors Part 1-3: Transformers and reactors (IEC 146-1-3 : 1991) Convertisseurs semiconducteurs Halbleiter-Stromrichter Spcifications communes et convertisseurs commuts par le rseau Stromrichter Partie 1-3: Transformateurs et bobines Allgemeine Anfor
3、derungen und netzgefhrte Ri1 1-3: Transformatoren und Drosselspulen dinductance (IEC 146-1-3 : 1991) (CE1 146-1-3 : 1991) This European Standard was approved by CENELEC on 1992-12-09. CENELEC members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for givi
4、ng 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 Central Secretariat or to any CENELEC member. This European Standard exists in three official v
5、ersions (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
6、 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 Comit Europen de Normalisation Electrotechnique Europisc
7、hes Komitee fr Elektrotechnische Normung Centrai Secretariat: rue de Stassart 36, B-1050 Brussels O 1993 Copyright reserved to CENELEC members Ref. No. EN 60146-1-3 : 1993 E Page 2 EN 60146-11-3 : 1993 Foreword The CENELEC questionnaire procedure, performed for finding out whether or not the Interna
8、tional Standard IEC 146-1-3 : 1991 could be accepted without textual changes, has shown that no common modifications were necessary for the acceptance as European Standard. The reference document was submitted to the CENELEC members for formal vote and was approved by CENELEC as EN 60146-1-3 on 9 De
9、cember 1992. The following dates were fixed, - latest date of publication of an identical national standard (dop) 1993-12-01 - latest date of withdrawa of conflicting national standards (dw) 1993-12-01 For products which have complied with the relevant national standard before 1993-12-01, as shown b
10、y the manufacturer or by a certification body, this previous standard may continue to apply for production until 1998-12-01. Annexes designated ?normative? are part of the body of the standard. In this standard, annexes A and ZA are normative. = 3404583 0057b93 923 Page 3 EN 60146-1-3 : 1993 CONTENT
11、S clause 1 Scope . 2 Normative references . 3 Rated values for convertor transformers . 3.1 Rated current values . 3.2 Temperature limits of cooling media . 4 Losses and voltage drops in transformers and reactors . 4.1 Losses in the transformer windings . 4.2 Losses in interphase transformers. curre
12、nt balancing reactors. ser- ies-smoothing reactors. transductors and other current regulating acces- sories . 4.3 Voltage drops in transformers and reactors 5 Tests for convertor transformers 5.1 Measurement of commutating reactance and determination of inductive voltage drop (type test) . 5.2 Short
13、-circuit test (type test and routine test) . 5.3 Temperature rise test (type test) . Annex A (normative) . Corrections to be applied when cooling medium temperature is higher than standard Annex ZA (normative) Other international publications quoted in this standard with the references of the releva
14、nt European publications . Tables 1 . Temperature rise limits 2 . Connections and calculation factors . Page 4 4 5 5 5 6 6 6 7 7 7 8 9 13 13 14 10 11 W 3404583 005b4 8bT = Page 4 EN 60146-1-3 : 1993 SEMICONDUCTOR CONVERTORS General requirements and line commutated convertors Part 1-3: Transformers a
15、nd reactors 1 Scope This Part 1-3 of the International Standard relates, in general, to those characteristics wherein convertor transformers differ from ordinary power transformers. In all other respects, the rules spedfied in IEC 76 shall apply to convertor transformers. also, as far as they are no
16、t in contradiction with this standard. It should be borne in mind that a rectifier transformer operates with non-sinusoidal current waveshape. In single-way connection, the current in each cell winding contains a d.c. component which calls for special attention in design and testing. In some cases,
17、a special design is necessary when external short-circuits and cell failures would cause abnormal stress. For certain types of transformers, the waveshape of the normal operating voltage is non-sinusoidal. The core loss of such equipment is to be determined by applying a sinu- soidal voltage having
18、the same half-cyde arithmetic mean value and the same fundamental frequency as the voltage applied in service. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, th
19、e editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. Members of IEC and IS0 maintain registers of curren
20、tly valid International Standards. IEC 76: 1967, Power transformem. IEC 146-1-1 : 1991, Semiconductor convettom - General requirements and line commutated convertors - Part 1-1, IEC 146-1 -1. Specifications of basic requirements. IEC 146-1 -2: 1991, Semiconductor convemrs - General requirements and
21、ine commutated convertors - Part 1-2: Application guide. m 3404583 0057675 7Tb m Fge 5 EN 60146-1-3 : 1993 3 Rated values for convertor transformers 3.1 Rafed current values 3.1.1 Single convertor or double convertor supplied from one common cell winding The convertor transformer shall be capable of
22、 cartying current corresponding to rated direct current of the convertor continuously, followed by overload current (where specified) for the specified duration (See IEC 146-1 -1, 3.1 0.3.5), at maximum cooling temperatures without exceeding its thermal limit. 3.1.2 Double Convertor where each fhyri
23、sfor assembly has separate cell windings The convertor transformer shall be capable of carrying in each secondary group the appropriate current corresponding to rated direct current of the convertor continuously, followed by overload current for the specified duration (See IEC 146-1-1, 3.10.3.5), at
24、 maximum cooling temperatures without exceeding its thermal limit. Where common line windings are used for the two secondary windings, these should be rated as in 3.1.1. 3.2 Temperature limits of cooling media Temperature rise limits are specified in 5.3. 3.2.1 Air cooled outdoor equipment The conve
25、rtor transformer shall be designed to operate at an ambient air temperature which does not exceed +40 “C, does not average more than +20 “C over a year and does not average more than +30 “C for any 24 h period. 3.2.2 Air cooled indoor equipment The convertor transformer shall be designed to operate
26、in an ambient air temperature of +40 OC. 3.2.3 Wafer cooled equipment The convertor transformer shall be designed to operate with incoming cooling water tem- perature which does not exceed +25 OC. m 3404583 005bb b32 m we 6 EN 60146-1-3 : 1993 4 Losses and voltage drops in transformers and reactors
27、4.1 Losses in the transformer windings The losses in the windings which appear under normal service conditions are composed of the losses in the winding resistance as measured by d.c. and the additional losses (de- pending on frequency). caused by eddy currents as well as the stray flux in the windi
28、ngs and in the construction parts. Due to the harmonics, the actual losses in the windings would require to be measured with the transformer in normal operation with the assembly. This method of measurement cannot be recommended because it is too complicated and inaccurate, unless total losses of tr
29、ansformer and assembly are taken as one measure- ment. In such cases and for units not exceeding a rated output of 300 kW, the losses may be measured at normal rated load operation. In all other cases, the losses in the windings are to be calculated from the results of short-circuit measurement carr
30、ied out with sinusoidal currents. The method is based on the passage of sinusoidal currents in the winding having the same r.m.s. values as those which would exist in operation with the assembly if the overlap was disregarded (see table 2). Owing to the fact that the r.m.s. values of the currents du
31、ring normal operation with the assembly are somewhat smaller than those in the test, a positive error is encountered. This positive error is assumed to be compensated for by the negative error resulting from the fact that the additional stray losses caused by the harmonics in operation with the asse
32、mbly are disregarded. 4.2 Losses in interphase transformers, current balancing reactors, series-smoothing reactors, transductors and other current regulating accessories 4.2.1 Interphase transformers The supplier shall measure the iron losses at a frequency and voltage calculated to provide the magn
33、etic flux corresponding to operation of the convertor at rated current, voltage and specified phase control, corrected to the available frequency nearest to the principal fre- quency of the interphase transformer. The losses in the winding are to be calculated as the product of the d.c. resistance a
34、nd the square of the direct current in the winding. 4.2.2 Current balancing reactors The iron losses in current balancing reactors are by convention to be ignored. The losses in the winding are either a part of the convertor loss measurement or calculated as the product of the d.c. measured resistan
35、ce and the square of the r.m.s. current in the winding, calculated on the basis of rectangular shaped current waveform. m 3qq583 0057bi 579 m Page 7 EN 60146-1-3 : 1993 4.2.3 Series-smoothing reactors The iron losses are, by convention, to be ignored. The losses in the winding are either a part of t
36、he convertor loss measurement or calculated as the product of the d.c. resistance and the square of the direct current in the winding. 4.2.4 Transductors and other current regulating accessories The iron losses shall be measured or calculated at magnetic flux conditions corresponding to operation of
37、 the convertor at rated current, rated line voltage and specified direct voltage. Measurement is made at a frequency corrected to the available frequency nearest to the principal frequency nearest of the transductor core flux. The losses in the power winding are to be calculated as the product of th
38、e d.c. measured resistance and the square of the r.m.s. current in the winding, calculated on the basis of idealized current waveform (ignoring stray inductances). When the power winding consists of heavy conductors, the eddy current losses should be estimated by calculation and added. NOTE - These
39、losses are for use in efficiency calculations and not for design. 4.3 Voltage drops in transformers and reactors The voitage drops are calculated from the loss measurements by the formulae given in 3.5 Of IEC 146-1-1. 5 Tests for convertor transformers All tests specified for power transformers in I
40、EC 76 shall apply to convertor transformers if not in contradiction with the tests specified in this clause. The tests specified below are to be regarded as additional or special tests applicable to convertor transformers. 5.1 Measurement of commutating reactance and determination of inductive voita
41、ge drop (WPe test) 5.1.1 Commu rated direct current; commutation number; number of commutating groups in series; ideal no-load direct voltage; number of commutating groups commutating simultaneously per primary. It can also be obtained from the test described in 5.1.1 by passing during the test a cu
42、rrent with an r.m.s. value of: Jzs -x-xr, 4g In this case, the inductive component of the input voltage expressed in p.u. of the rated voltage between terminals U, represents the inductive voltage regulation any other equivalent method comprising a winding short-circuit on the cell may then be used.
43、 5.2 Short-circuit test (type test and routine t c Y r! K c P - Y - Y o I l u 0 L n I - 3Y a ! p_s p - m 3YOY583 0057703 bT2 m Page 13 EN 601EA (normative) Other international publications quoted in this standard with the references of the relevaint European publications When the international publi
44、cation has been modified by CENELEC common modifications, indicated by (mod), the relevant EN/HD applies. IEC Publication 76 146-1 -1 146-1 -2 DM. series 1991 1991 Titk Power transformers Semiconductor convertors General requirements and line tmmnutated convertors - Part 1-1 : Specifications of basic requirems Part 1-2: Application guide ENIHD Date HD 390 series EN 601 46-1 -1 1993
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