1、 2 W 3Y04.583 0016603 B W 1 I HD 533 S1 - _- C E NE L EC I i ;FA ION Rue de Stassart. 35 - 1050 Bruxelles TBI.: (+ 32 2) 519.68.71 - Fax: (+ 32 2) 519.69.19 Teletex 206 2210097 - CENCEL - TX i72210097 I s sue 1 April 1991 I 1991-04-24 Short-circuit current calculation in three-phase a.c. systems Cal
2、cul des courants de court-circuit dans les rseaux triphass courant alternatif Berechnung von Kurzschlustramen in Drehstromnetzen ., RD: IEC 909:1988; IEC/TC 73 (not appended) - This Harmonization Document consists of the following: - Title Page Related to Directive: - - common modification.s prepare
3、d by CENELEC Reporting Secretariat SR 73 date of ratification : 1990-03-05 date of announcement : 1990-09-01 date of latest publication : 1991-11-01 date of withdrawal : 1991-11-01 LIST OF NATIONAL STANDARDS IS GIVEN OVERLEAF HARMONIZED NATIONAL STANDARDS HD 533 S1:1991 AT : NOS BE : NOS CH : NOS DE
4、 : NR DK : SP DS/tEC 909) ES : FI : NOS FR NOS GB : NOS GR : NOS IE : NOS IS : IT : NOS LU : NL : NOS NO : NOS PT : NOS SE : NOS * _ HARMONIZATION DOCUMENT DOCUMENT DHARMONISATION HARMONISIERUNGSDOKUMENT April 1991 UDC 621.3.02.001 Descriptors: Calculation, short-circuit current, three-phase systems
5、 ENGLISH VERSION SHORT-CIRCUIT CURRENT CALCULATION IN THREE-PHASE A.C. SYSTEMS (IEC 909:1988, modified) Calcul des courants de court-circuit dans les reseaux triphass a courant alternatif (CE1 909:1988, modifie) Berechnung von Kurz s c hlu 8 s t r men in Drehstrornnetzen (IEC 909, modifiziert) This
6、Harmonization Document was approved by CENELEC on 1990-03-05. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for implementation of this Harmonization Document on a national level, Up-to-date lists and bibliographical references concerning
7、 national implementation may be obtained on application to the Central-Secretariat or to any CENELEC member. This Harmonization Document exists in three official versions (English, French, German 1 , CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland,
8、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 Europaisches Komitee fr Elektrotechnische Normun
9、g Central Secretariat: rue de Stassart 35, 8-1050 Brussels 1991 Copyright reserved to CENELEC members Ref. No. HD 533 S1:1991 E Page 2 m 3404583 00LbbOb 3 m 4L HD 533 51:1991 , FOREWORD The CENELEC questionnaire procedure, performed for finding out whether or not the International Standard IEC 909:1
10、988 could be accepted without textual changes, has shown that some CENELEC common modifications were necessary for the acceptance as Harmonization Document. The reference document, together with the common modifications prepared by the CENELEC Reporting Secretariat SR 73, was submitted to the CENELE
11、C members for formal vote. The text of the draft was approved by all CENELEC members, with the exception of Austria, Finland and Norway, as HD 533 S1 on 5 March 1990. The following dates were fixed: - latest date of announcement of the HD at national level - latest date of publication of a new harmo
12、nized national standard - latest date of withdrawal of conflicting national standards (doa) 1990-09-01 (dop) 1991-11-01 (dow) 1991-11-01 ENDORSEMENT NOTICE The text of the International Standard IEC 909:1988 was approved by CENELEC as a Harmonization Document with agreed common modifications as give
13、n below. COMMON MODIFICATIONS 1 Scope In the third line change “230 kV“ into “380 kV“. 6 Equivalent voltage source at the short-circuit location Table I In the last box of column 1, change “230 KV“ into “380 kV“. 9.3.1 At the end of the subclause add: For lines in low-voltage systems it is sufficient to take O = 80C. Appendix A Replace “Appendix A“ by “Appendix A (informative) l.
